[ONOS-4799],[ONOS-4351] Augment inter file linker and Generated Code refactored.

Change-Id: Id1f3ac9c90a632373f51cc75d499c3110216be17

@@ -49,5 +49,10 @@ public enum ResolvableType {
     /**
      * Identifies the identityref.
      */
-    YANG_IDENTITYREF
+    YANG_IDENTITYREF,
+
+    /**
+     * Identifies the augment.
+     */
+    YANG_AUGMENT
 }

@@ -20,6 +20,7 @@ import java.util.List;
 
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
 import org.onosproject.yangutils.datamodel.utils.Parsable;
+import org.onosproject.yangutils.datamodel.utils.ResolvableStatus;
 import org.onosproject.yangutils.datamodel.utils.YangConstructType;
 
 import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.detectCollidingChildUtil;
@@ -81,7 +82,8 @@ import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.detectCol
  */
 public class YangAugment
         extends YangNode
-        implements YangLeavesHolder, YangCommonInfo, Parsable, CollisionDetector, YangWhenHolder, YangIfFeatureHolder {
+        implements YangLeavesHolder, YangCommonInfo, Parsable, CollisionDetector, YangAugmentedInfo, Resolvable,
+        YangXPathResolver, YangWhenHolder, YangIfFeatureHolder  {
 
     private static final long serialVersionUID = 806201602L;
 
@@ -108,7 +110,7 @@ public class YangAugment
     /**
      * List of node identifiers.
      */
-    private List<YangNodeIdentifier> targetNode;
+    private List<YangAtomicPath> targetNode;
 
     /**
      * Reference of the YANG augment.
@@ -121,6 +123,19 @@ public class YangAugment
     private YangStatusType status;
 
     /**
+     * Resolved augmented node.
+     */
+    private YangNode augmentedNode;
+
+    /**
+     * Status of resolution. If completely resolved enum value is "RESOLVED",
+     * if not enum value is "UNRESOLVED", in case reference of grouping/typedef
+     * is added to uses/type but it's not resolved value of enum should be
+     * "INTRA_FILE_RESOLVED".
+     */
+    private ResolvableStatus resolvableStatus;
+
+    /**
      * When data of the node.
      */
     private YangWhen when;
@@ -135,6 +150,7 @@ public class YangAugment
      */
     public YangAugment() {
         super(YangNodeType.AUGMENT_NODE);
+        resolvableStatus = ResolvableStatus.UNRESOLVED;
     }
 
     /**
@@ -142,7 +158,7 @@ public class YangAugment
      *
      * @return the augmented node
      */
-    public List<YangNodeIdentifier> getTargetNode() {
+    public List<YangAtomicPath> getTargetNode() {
         return targetNode;
     }
 
@@ -151,7 +167,7 @@ public class YangAugment
      *
      * @param nodeIdentifiers the augmented node
      */
-    public void setTargetNode(List<YangNodeIdentifier> nodeIdentifiers) {
+    public void setTargetNode(List<YangAtomicPath> nodeIdentifiers) {
         targetNode = nodeIdentifiers;
     }
 
@@ -371,6 +387,24 @@ public class YangAugment
         this.name = name;
     }
 
+    /**
+     * Returns augmented node.
+     *
+     * @return augmented node
+     */
+    public YangNode getAugmentedNode() {
+        return augmentedNode;
+    }
+
+    /**
+     * Sets augmented node.
+     *
+     * @param augmentedNode augmented node
+     */
+    public void setAugmentedNode(YangNode augmentedNode) {
+        this.augmentedNode = augmentedNode;
+    }
+
     @Override
     public List<YangIfFeature> getIfFeatureList() {
         return ifFeatureList;
@@ -388,4 +422,20 @@ public class YangAugment
     public void setIfFeatureList(List<YangIfFeature> ifFeatureList) {
         this.ifFeatureList = ifFeatureList;
     }
+
+    @Override
+    public ResolvableStatus getResolvableStatus() {
+        return resolvableStatus;
+    }
+
+    @Override
+    public void setResolvableStatus(ResolvableStatus resolvableStatus) {
+        this.resolvableStatus = resolvableStatus;
+
+    }
+
+    @Override
+    public void resolve() throws DataModelException {
+        // Resolving of target node is being done in XPathLinker.
+    }
 }

@@ -14,31 +14,33 @@
  * limitations under the License.
  */
 
-package org.onosproject.yangutils.utils;
+package org.onosproject.yangutils.datamodel;
 
 import java.util.List;
 
 /**
- * Abstraction of an entity which represents augmentation of a YANG node.
+ * Represents YANG constructs which can be augmented.
  */
-public interface AugmentationHolder {
+public interface YangAugmentableNode {
 
     /**
      * Adds augment info to the augment info list.
      *
      * @param augmentInfo augment info of node
      */
-    void addAugmentation(AugmentedInfo augmentInfo);
+    void addAugmentation(YangAugmentedInfo augmentInfo);
 
     /**
      * Removes augment info from the node.
+     *
+     * @param augmentInfo augment info of node
      */
-    void removeAugmentation();
+    void removeAugmentation(YangAugmentedInfo augmentInfo);
 
     /**
      * Returns list of augment info.
      *
      * @return list of augment info
      */
-    List<AugmentedInfo> getAugmentedInfoList();
+    List<YangAugmentedInfo> getAugmentedInfoList();
 }

@@ -17,7 +17,7 @@
 package org.onosproject.yangutils.datamodel;
 
 /**
- * Represents YANG constructs which can be augmented.
+ * Abstraction of an entity which represents YANG augmented info.
  */
-public interface YangAugmentationHolder {
+public interface YangAugmentedInfo {
 }

@@ -15,6 +15,7 @@
  */
 package org.onosproject.yangutils.datamodel;
 
+import java.util.ArrayList;
 import java.util.LinkedList;
 import java.util.List;
 
@@ -94,7 +95,7 @@ import static org.onosproject.yangutils.datamodel.utils.YangConstructType.CASE_D
  */
 public class YangCase
         extends YangNode
-        implements YangLeavesHolder, YangCommonInfo, Parsable, CollisionDetector, YangAugmentationHolder,
+        implements YangLeavesHolder, YangCommonInfo, Parsable, CollisionDetector, YangAugmentableNode,
         YangWhenHolder, YangIfFeatureHolder {
 
     private static final long serialVersionUID = 806201603L;
@@ -141,6 +142,8 @@ public class YangCase
      */
     private List<YangIfFeature> ifFeatureList;
 
+    private List<YangAugmentedInfo> yangAugmentedInfo = new ArrayList<>();
+
     /**
      * Creates a choice node.
      */
@@ -392,4 +395,19 @@ public class YangCase
     public void setIfFeatureList(List<YangIfFeature> ifFeatureList) {
         this.ifFeatureList = ifFeatureList;
     }
+
+    @Override
+    public void addAugmentation(YangAugmentedInfo augmentInfo) {
+        yangAugmentedInfo.add(augmentInfo);
+    }
+
+    @Override
+    public void removeAugmentation(YangAugmentedInfo augmentInfo) {
+        yangAugmentedInfo.remove(augmentInfo);
+    }
+
+    @Override
+    public List<YangAugmentedInfo> getAugmentedInfoList() {
+        return yangAugmentedInfo;
+    }
 }

@@ -15,6 +15,7 @@
  */
 package org.onosproject.yangutils.datamodel;
 
+import java.util.ArrayList;
 import java.util.LinkedList;
 import java.util.List;
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
@@ -63,8 +64,8 @@ import static org.onosproject.yangutils.datamodel.utils.YangConstructType.CHOICE
  * Represents data model node to maintain information defined in YANG choice.
  */
 public class YangChoice extends YangNode
-        implements YangCommonInfo, Parsable, CollisionDetector, YangAugmentationHolder, YangWhenHolder,
-        YangIfFeatureHolder {
+        implements YangCommonInfo, Parsable, CollisionDetector, YangAugmentableNode,
+        YangWhenHolder, YangIfFeatureHolder {
 
     private static final long serialVersionUID = 806201604L;
 
@@ -156,6 +157,8 @@ public class YangChoice extends YangNode
      */
     private List<YangIfFeature> ifFeatureList;
 
+    private List<YangAugmentedInfo> yangAugmentedInfo = new ArrayList<>();
+
     /**
      * Create a choice node.
      */
@@ -418,4 +421,18 @@ public class YangChoice extends YangNode
         this.ifFeatureList = ifFeatureList;
     }
 
+    @Override
+    public void addAugmentation(YangAugmentedInfo augmentInfo) {
+        yangAugmentedInfo.add(augmentInfo);
+    }
+
+    @Override
+    public void removeAugmentation(YangAugmentedInfo augmentInfo) {
+        yangAugmentedInfo.remove(augmentInfo);
+    }
+
+    @Override
+    public List<YangAugmentedInfo> getAugmentedInfoList() {
+        return yangAugmentedInfo;
+    }
 }

@@ -16,6 +16,7 @@
 
 package org.onosproject.yangutils.datamodel;
 
+import java.util.ArrayList;
 import java.util.LinkedList;
 import java.util.List;
 
@@ -89,8 +90,8 @@ import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.detectCol
  */
 public class YangContainer
         extends YangNode
-        implements YangLeavesHolder, YangCommonInfo, Parsable, CollisionDetector, YangAugmentationHolder,
-        YangMustHolder, YangWhenHolder, YangIfFeatureHolder {
+        implements YangLeavesHolder, YangCommonInfo, Parsable, CollisionDetector,
+        YangAugmentableNode, YangMustHolder, YangWhenHolder, YangIfFeatureHolder {
 
     private static final long serialVersionUID = 806201605L;
 
@@ -130,6 +131,8 @@ public class YangContainer
      */
     private String reference;
 
+    private List<YangAugmentedInfo> yangAugmentedInfo = new ArrayList<>();
+
     /**
      * Status of the node.
      */
@@ -518,4 +521,18 @@ public class YangContainer
         getListOfMust().add(must);
     }
 
+    @Override
+    public void addAugmentation(YangAugmentedInfo augmentInfo) {
+        yangAugmentedInfo.add(augmentInfo);
+    }
+
+    @Override
+    public void removeAugmentation(YangAugmentedInfo augmentInfo) {
+        yangAugmentedInfo.remove(augmentInfo);
+    }
+
+    @Override
+    public List<YangAugmentedInfo> getAugmentedInfoList() {
+        return yangAugmentedInfo;
+    }
 }

@@ -16,6 +16,7 @@
 
 package org.onosproject.yangutils.datamodel;
 
+import java.util.ArrayList;
 import java.util.LinkedList;
 import java.util.List;
 
@@ -70,7 +71,7 @@ import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.detectCol
  */
 public class YangInput
         extends YangNode
-        implements YangLeavesHolder, Parsable, CollisionDetector, YangAugmentationHolder {
+        implements YangLeavesHolder, Parsable, CollisionDetector, YangAugmentableNode {
 
     private static final long serialVersionUID = 806201608L;
 
@@ -89,6 +90,8 @@ public class YangInput
      */
     private List<YangLeafList> listOfLeafList;
 
+    private List<YangAugmentedInfo> yangAugmentedInfo = new ArrayList<>();
+
     /**
      * Create a rpc input node.
      */
@@ -171,4 +174,19 @@ public class YangInput
     public void setName(String name) {
         this.name = name;
     }
+
+    @Override
+    public void addAugmentation(YangAugmentedInfo augmentInfo) {
+        yangAugmentedInfo.add(augmentInfo);
+    }
+
+    @Override
+    public void removeAugmentation(YangAugmentedInfo augmentInfo) {
+        yangAugmentedInfo.remove(augmentInfo);
+    }
+
+    @Override
+    public List<YangAugmentedInfo> getAugmentedInfoList() {
+        return yangAugmentedInfo;
+    }
 }

@@ -43,7 +43,8 @@ import static org.onosproject.yangutils.datamodel.utils.ResolvableStatus.RESOLVE
  *
  * @param <T> YANG leafref info
  */
-public class YangLeafRef<T> implements Parsable, Resolvable, Serializable, YangIfFeatureHolder {
+public class YangLeafRef<T> implements Parsable, Resolvable, Serializable, YangIfFeatureHolder,
+        YangXPathResolver {
 
     private static final long serialVersionUID = 286201644L;
 

@@ -16,6 +16,7 @@
 
 package org.onosproject.yangutils.datamodel;
 
+import java.util.ArrayList;
 import java.util.LinkedList;
 import java.util.List;
 
@@ -70,8 +71,8 @@ import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.detectCol
  */
 public class YangList
         extends YangNode
-        implements YangLeavesHolder, YangCommonInfo, Parsable, CollisionDetector, YangAugmentationHolder,
-        YangMustHolder, YangIfFeatureHolder, YangDataNode {
+        implements YangLeavesHolder, YangCommonInfo, Parsable, CollisionDetector,
+        YangAugmentableNode, YangMustHolder, YangIfFeatureHolder, YangDataNode {
 
     private static final long serialVersionUID = 806201609L;
 
@@ -127,6 +128,8 @@ public class YangList
      */
     private List<YangLeafList> listOfLeafList;
 
+    private List<YangAugmentedInfo> yangAugmentedInfo = new ArrayList<>();
+
     /**
      * Reference RFC 6020.
      *
@@ -570,8 +573,7 @@ public class YangList
      * @throws DataModelException a violation of data model rules
      */
     private void validateKey(List<YangLeaf> leaves, List<YangLeafList> leafLists, List<String> keys)
-            throws
-            DataModelException {
+            throws DataModelException {
         boolean leafFound = false;
         List<YangLeaf> keyLeaves = new LinkedList<>();
         List<YangLeafList> keyLeafLists = new LinkedList<>();
@@ -713,4 +715,19 @@ public class YangList
         }
         getListOfMust().add(must);
     }
+
+    @Override
+    public void addAugmentation(YangAugmentedInfo augmentInfo) {
+        yangAugmentedInfo.add(augmentInfo);
+    }
+
+    @Override
+    public void removeAugmentation(YangAugmentedInfo augmentInfo) {
+        yangAugmentedInfo.remove(augmentInfo);
+    }
+
+    @Override
+    public List<YangAugmentedInfo> getAugmentedInfoList() {
+        return yangAugmentedInfo;
+    }
 }

@@ -201,30 +201,34 @@ public class YangModule
     private List<YangResolutionInfo> derivedTypeResolutionList;
 
     /**
-     * uses resolution list.
+     * Uses resolution list.
      */
     private List<YangResolutionInfo> usesResolutionList;
 
     /**
-     * if-feature resolution list.
+     * If-feature resolution list.
      */
     private List<YangResolutionInfo> ifFeatureResolutionList;
 
     /**
-     * leafref resolution list.
+     * Leafref resolution list.
      */
     private List<YangResolutionInfo> leafrefResolutionList;
 
     /**
-     * base resolution list.
+     * Base resolution list.
      */
     private List<YangResolutionInfo> baseResolutionList;
 
     /**
-     * identityref resolution list.
+     * Identityref resolution list.
      */
     private List<YangResolutionInfo> identityrefResolutionList;
 
+    /**
+     * Augment resolution list.
+     */
+    private List<YangResolutionInfo> augmentResolutionList;
 
     /**
      * Creates a YANG node of module type.
@@ -233,6 +237,7 @@ public class YangModule
 
         super(YangNodeType.MODULE_NODE);
         derivedTypeResolutionList = new LinkedList<>();
+        augmentResolutionList = new LinkedList<>();
         usesResolutionList = new LinkedList<>();
         ifFeatureResolutionList = new LinkedList<>();
         leafrefResolutionList = new LinkedList<>();
@@ -608,6 +613,8 @@ public class YangModule
             return derivedTypeResolutionList;
         } else if (type == ResolvableType.YANG_USES) {
             return usesResolutionList;
+        } else if (type == ResolvableType.YANG_AUGMENT) {
+            return augmentResolutionList;
         } else if (type == ResolvableType.YANG_IF_FEATURE) {
             return ifFeatureResolutionList;
         } else if (type == ResolvableType.YANG_LEAFREF) {
@@ -632,6 +639,8 @@ public class YangModule
             leafrefResolutionList.add(resolutionInfo);
         } else if (type == ResolvableType.YANG_BASE) {
             baseResolutionList.add(resolutionInfo);
+        } else if (type ==  ResolvableType.YANG_AUGMENT) {
+            augmentResolutionList.add(resolutionInfo);
         } else if (type == ResolvableType.YANG_IDENTITYREF) {
             identityrefResolutionList.add(resolutionInfo);
         }
@@ -650,6 +659,8 @@ public class YangModule
             leafrefResolutionList = resolutionList;
         } else if (type == ResolvableType.YANG_BASE) {
             baseResolutionList = resolutionList;
+        } else if (type ==  ResolvableType.YANG_AUGMENT) {
+            augmentResolutionList = resolutionList;
         } else if (type == ResolvableType.YANG_IDENTITYREF) {
             identityrefResolutionList = resolutionList;
         }

@@ -16,6 +16,7 @@
 
 package org.onosproject.yangutils.datamodel;
 
+import java.util.ArrayList;
 import java.util.LinkedList;
 import java.util.List;
 
@@ -76,8 +77,8 @@ import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.detectCol
  */
 public class YangNotification
         extends YangNode
-        implements YangLeavesHolder, YangCommonInfo, Parsable, CollisionDetector, YangAugmentationHolder,
-        YangIfFeatureHolder {
+        implements YangLeavesHolder, YangCommonInfo, Parsable, CollisionDetector,
+        YangAugmentableNode, YangIfFeatureHolder {
 
     private static final long serialVersionUID = 806201611L;
 
@@ -116,6 +117,8 @@ public class YangNotification
      */
     private List<YangIfFeature> ifFeatureList;
 
+    private List<YangAugmentedInfo> yangAugmentedInfo = new ArrayList<>();
+
     /**
      * Create a notification node.
      */
@@ -245,4 +248,19 @@ public class YangNotification
     public void setIfFeatureList(List<YangIfFeature> ifFeatureList) {
         this.ifFeatureList = ifFeatureList;
     }
+
+    @Override
+    public void addAugmentation(YangAugmentedInfo augmentInfo) {
+        yangAugmentedInfo.add(augmentInfo);
+    }
+
+    @Override
+    public void removeAugmentation(YangAugmentedInfo augmentInfo) {
+        yangAugmentedInfo.remove(augmentInfo);
+    }
+
+    @Override
+    public List<YangAugmentedInfo> getAugmentedInfoList() {
+        return yangAugmentedInfo;
+    }
 }

@@ -16,6 +16,7 @@
 
 package org.onosproject.yangutils.datamodel;
 
+import java.util.ArrayList;
 import java.util.LinkedList;
 import java.util.List;
 
@@ -69,7 +70,7 @@ import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.detectCol
  */
 public class YangOutput
         extends YangNode
-        implements YangLeavesHolder, Parsable, CollisionDetector, YangAugmentationHolder {
+        implements YangLeavesHolder, Parsable, CollisionDetector, YangAugmentableNode {
 
     private static final long serialVersionUID = 806201612L;
 
@@ -88,6 +89,8 @@ public class YangOutput
      */
     private List<YangLeafList> listOfLeafList;
 
+    private List<YangAugmentedInfo> yangAugmentedInfo = new ArrayList<>();
+
     /**
      * Create a rpc output node.
      */
@@ -170,4 +173,19 @@ public class YangOutput
     public void setName(String name) {
         this.name = name;
     }
+
+    @Override
+    public void addAugmentation(YangAugmentedInfo augmentInfo) {
+        yangAugmentedInfo.add(augmentInfo);
+    }
+
+    @Override
+    public void removeAugmentation(YangAugmentedInfo augmentInfo) {
+        yangAugmentedInfo.remove(augmentInfo);
+    }
+
+    @Override
+    public List<YangAugmentedInfo> getAugmentedInfoList() {
+        return yangAugmentedInfo;
+    }
 }

@@ -20,10 +20,13 @@ package org.onosproject.yangutils.datamodel;
  */
 public enum YangPathArgType {
 
-    // Absolute path.
+    /**
+     * Absolute path.
+     */
     ABSOLUTE_PATH,
 
-    // Relative path.
+    /**
+     * Relative path.
+     */
     RELATIVE_PATH
-
 }

@@ -20,6 +20,8 @@ package org.onosproject.yangutils.datamodel;
  */
 public enum YangPathOperator {
 
-    // Path expression contains equal to.
+    /**
+     *  Path expression contains equal-to.
+     */
     EQUALTO
 }

@@ -199,36 +199,42 @@ public class YangSubModule
     private List<YangResolutionInfo> derivedTypeResolutionList;
 
     /**
-     * uses resolution list.
+     * Uses resolution list.
      */
     private List<YangResolutionInfo> usesResolutionList;
 
     /**
-     * if-feature resolution list.
+     * If-feature resolution list.
      */
     private List<YangResolutionInfo> ifFeatureResolutionList;
 
     /**
-     * leafref resolution list.
+     * Leafref resolution list.
      */
     private List<YangResolutionInfo> leafrefResolutionList;
 
     /**
-     * base resolution list.
+     * Base resolution list.
      */
     private List<YangResolutionInfo> baseResolutionList;
 
     /**
-     * identityref resolution list.
+     * Identityref resolution list.
      */
     private List<YangResolutionInfo> identityrefResolutionList;
 
     /**
+     * Augment resolution list.
+     */
+    private List<YangResolutionInfo> augmentResolutionList;
+
+    /**
      * Creates a sub module node.
      */
     public YangSubModule() {
         super(YangNodeType.SUB_MODULE_NODE);
         derivedTypeResolutionList = new LinkedList<>();
+        augmentResolutionList = new LinkedList<>();
         usesResolutionList = new LinkedList<>();
         ifFeatureResolutionList = new LinkedList<>();
         leafrefResolutionList = new LinkedList<>();
@@ -569,6 +575,8 @@ public class YangSubModule
             return derivedTypeResolutionList;
         } else if (type == ResolvableType.YANG_USES) {
             return usesResolutionList;
+        } else if (type == ResolvableType.YANG_AUGMENT) {
+            return augmentResolutionList;
         } else if (type == ResolvableType.YANG_IF_FEATURE) {
             return ifFeatureResolutionList;
         } else if (type == ResolvableType.YANG_LEAFREF) {
@@ -593,6 +601,8 @@ public class YangSubModule
             leafrefResolutionList.add(resolutionInfo);
         } else if (type == ResolvableType.YANG_BASE) {
             baseResolutionList.add(resolutionInfo);
+        } else if (type ==  ResolvableType.YANG_AUGMENT) {
+            augmentResolutionList.add(resolutionInfo);
         } else if (type == ResolvableType.YANG_IDENTITYREF) {
             identityrefResolutionList.add(resolutionInfo);
         }
@@ -611,6 +621,8 @@ public class YangSubModule
             leafrefResolutionList = resolutionList;
         } else if (type == ResolvableType.YANG_BASE) {
             baseResolutionList = resolutionList;
+        } else if (type ==  ResolvableType.YANG_AUGMENT) {
+            augmentResolutionList = resolutionList;
         } else if (type == ResolvableType.YANG_IDENTITYREF) {
             identityrefResolutionList = resolutionList;
         }

@@ -14,10 +14,10 @@
  * limitations under the License.
  */
 
-package org.onosproject.yangutils.utils;
+package org.onosproject.yangutils.datamodel;
 
 /**
- * Abstraction of an entity which represents augmented info.
+ * Abstraction of an entity which can be resolved with x-path linker.
  */
-public interface AugmentedInfo {
+public interface YangXPathResolver {
 }

@@ -16,12 +16,17 @@
 
 package org.onosproject.yangutils.datamodel.utils;
 
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.ObjectInputStream;
+import java.util.ArrayList;
 import java.util.List;
 import java.util.Set;
 
 import org.onosproject.yangutils.datamodel.CollisionDetector;
 import org.onosproject.yangutils.datamodel.ResolvableType;
 import org.onosproject.yangutils.datamodel.YangIfFeature;
+import org.onosproject.yangutils.datamodel.YangAugment;
 import org.onosproject.yangutils.datamodel.YangBase;
 import org.onosproject.yangutils.datamodel.YangIdentityRef;
 import org.onosproject.yangutils.datamodel.YangLeaf;
@@ -171,6 +176,10 @@ public final class DataModelUtils {
             resolutionNode.addToResolutionList(resolutionInfo,
                     ResolvableType.YANG_USES);
         } else if (resolutionInfo.getEntityToResolveInfo()
+                .getEntityToResolve() instanceof YangAugment) {
+            resolutionNode.addToResolutionList(resolutionInfo,
+                    ResolvableType.YANG_AUGMENT);
+        } else if (resolutionInfo.getEntityToResolveInfo()
                 .getEntityToResolve() instanceof YangIfFeature) {
             resolutionNode.addToResolutionList(resolutionInfo,
                     ResolvableType.YANG_IF_FEATURE);
@@ -272,4 +281,30 @@ public final class DataModelUtils {
          */
         return currentNode.getParent();
     }
+
+    /**
+     * Returns de-serializes YANG data-model nodes.
+     *
+     * @param serializableInfoSet YANG file info set
+     * @return de-serializes YANG data-model nodes
+     * @throws IOException when fails do IO operations
+     */
+    public static List<YangNode> deSerializeDataModel(List<String> serializableInfoSet) throws IOException {
+
+        List<YangNode> nodes = new ArrayList<>();
+        for (String fileInfo : serializableInfoSet) {
+            YangNode node = null;
+            try {
+                FileInputStream fileInputStream = new FileInputStream(fileInfo);
+                ObjectInputStream objectInputStream = new ObjectInputStream(fileInputStream);
+                node = (YangNode) objectInputStream.readObject();
+                nodes.add(node);
+                objectInputStream.close();
+                fileInputStream.close();
+            } catch (IOException | ClassNotFoundException e) {
+                throw new IOException(fileInfo + " not found.");
+            }
+        }
+        return nodes;
+    }
 }

@@ -161,6 +161,8 @@ public class YangLinkerManager
                 ((YangReferenceResolver) yangNode)
                         .resolveInterFileLinking(ResolvableType.YANG_USES);
                 ((YangReferenceResolver) yangNode)
+                .resolveInterFileLinking(ResolvableType.YANG_AUGMENT);
+                ((YangReferenceResolver) yangNode)
                         .resolveInterFileLinking(ResolvableType.YANG_DERIVED_DATA_TYPE);
                 ((YangReferenceResolver) yangNode)
                         .resolveInterFileLinking(ResolvableType.YANG_LEAFREF);

+/*
+ * Copyright 2016-present Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.yangutils.linker.impl;
+
+import java.util.List;
+
+import org.onosproject.yangutils.datamodel.YangAugment;
+import org.onosproject.yangutils.datamodel.YangAugmentableNode;
+import org.onosproject.yangutils.datamodel.YangAugmentedInfo;
+import org.onosproject.yangutils.datamodel.YangLeaf;
+import org.onosproject.yangutils.datamodel.YangLeafList;
+import org.onosproject.yangutils.datamodel.YangLeavesHolder;
+import org.onosproject.yangutils.datamodel.YangNode;
+import org.onosproject.yangutils.linker.exceptions.LinkerException;
+
+/**
+ * Represent utilities for YANG linker.
+ */
+public final class YangLinkerUtils {
+
+    private YangLinkerUtils() {
+    }
+
+    /**
+     * Detects collision between target nodes leaf/leaf-list or child node with
+     * augmented leaf/leaf-list or child node.
+     *
+     * @param targetNode target node
+     * @param augment    augment node
+     */
+    private static void detectCollision(YangNode targetNode, YangAugment augment) {
+        YangNode targetNodesChild = targetNode.getChild();
+        YangNode augmentsChild = augment.getChild();
+        YangLeavesHolder augmentsLeavesHolder = augment;
+        YangLeavesHolder targetNodesLeavesHolder = (YangLeavesHolder) targetNode;
+
+        YangNode parent = targetNode;
+        if (targetNode instanceof YangAugment) {
+            parent = targetNode.getParent();
+        } else {
+            while (parent.getParent() != null) {
+                parent = parent.getParent();
+            }
+        }
+        if (augmentsLeavesHolder.getListOfLeaf() != null && augmentsLeavesHolder.getListOfLeaf().size() != 0
+                && targetNodesLeavesHolder.getListOfLeaf() != null) {
+            for (YangLeaf leaf : augmentsLeavesHolder.getListOfLeaf()) {
+                for (YangLeaf targetLeaf : targetNodesLeavesHolder.getListOfLeaf()) {
+                    if (targetLeaf.getName().equals(leaf.getName())) {
+                        throw new LinkerException("target node " + targetNode.getName()
+                                + " contains augmented leaf " + leaf.getName() + " in module "
+                                + parent.getName());
+                    }
+                }
+            }
+        } else if (augmentsLeavesHolder.getListOfLeafList() != null
+                && augmentsLeavesHolder.getListOfLeafList().size() != 0
+                && targetNodesLeavesHolder.getListOfLeafList() != null) {
+            for (YangLeafList leafList : augmentsLeavesHolder.getListOfLeafList()) {
+                for (YangLeafList targetLeafList : targetNodesLeavesHolder.getListOfLeafList()) {
+                    if (targetLeafList.getName().equals(leafList.getName())) {
+                        throw new LinkerException("target node " + targetNode.getName()
+                                + " contains augmented leaf-list" + leafList.getName() + " in module "
+                                + parent.getName());
+                    }
+                }
+            }
+        } else {
+            while (augmentsChild != null) {
+                while (targetNodesChild != null) {
+                    if (targetNodesChild.getName().equals(augmentsChild.getName())) {
+                        throw new LinkerException("target node " + targetNode.getName()
+                                + " contains augmented child node" + augmentsChild.getName() + " in module "
+                                + parent.getName());
+                    }
+                    targetNodesChild = targetNodesChild.getNextSibling();
+                }
+                augmentsChild = augmentsChild.getNextSibling();
+            }
+        }
+    }
+
+    /**
+     * Detects collision between target nodes and its all leaf/leaf-list or child node with
+     * augmented leaf/leaf-list or child node.
+     *
+     * @param targetNode target node
+     * @param augment    augment node
+     */
+    public static void detectCollisionForAugmentedNode(YangNode targetNode, YangAugment augment) {
+        // Detect collision for target node and augment node.
+        detectCollision(targetNode, augment);
+        List<YangAugmentedInfo> yangAugmentedInfo = ((YangAugmentableNode) targetNode).getAugmentedInfoList();
+        // Detect collision for target augment node and current augment node.
+        for (YangAugmentedInfo info : yangAugmentedInfo) {
+            detectCollision((YangAugment) info, augment);
+        }
+    }
+}

@@ -24,6 +24,8 @@ import java.util.Stack;
 import org.onosproject.yangutils.datamodel.Resolvable;
 import org.onosproject.yangutils.datamodel.ResolvableType;
 import org.onosproject.yangutils.datamodel.YangAtomicPath;
+import org.onosproject.yangutils.datamodel.YangAugment;
+import org.onosproject.yangutils.datamodel.YangAugmentableNode;
 import org.onosproject.yangutils.datamodel.YangBase;
 import org.onosproject.yangutils.datamodel.YangDerivedInfo;
 import org.onosproject.yangutils.datamodel.YangEntityToResolveInfo;
@@ -55,10 +57,12 @@ import org.onosproject.yangutils.datamodel.YangSubModule;
 import org.onosproject.yangutils.datamodel.YangType;
 import org.onosproject.yangutils.datamodel.YangTypeDef;
 import org.onosproject.yangutils.datamodel.YangUses;
+import org.onosproject.yangutils.datamodel.YangXPathResolver;
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
 import org.onosproject.yangutils.datamodel.utils.ResolvableStatus;
 import org.onosproject.yangutils.datamodel.utils.builtindatatype.YangDataTypes;
 import org.onosproject.yangutils.linker.YangLinkingPhase;
+import org.onosproject.yangutils.linker.exceptions.LinkerException;
 
 import static org.onosproject.yangutils.datamodel.utils.ResolvableStatus.INTER_FILE_LINKED;
 import static org.onosproject.yangutils.datamodel.utils.ResolvableStatus.INTRA_FILE_RESOLVED;
@@ -68,6 +72,7 @@ import static org.onosproject.yangutils.datamodel.utils.ResolvableStatus.UNDEFIN
 import static org.onosproject.yangutils.datamodel.utils.ResolvableStatus.UNRESOLVED;
 import static org.onosproject.yangutils.linker.YangLinkingPhase.INTER_FILE;
 import static org.onosproject.yangutils.linker.YangLinkingPhase.INTRA_FILE;
+import static org.onosproject.yangutils.linker.impl.YangLinkerUtils.detectCollisionForAugmentedNode;
 import static org.onosproject.yangutils.utils.UtilConstants.FEATURE_LINKER_ERROR;
 import static org.onosproject.yangutils.utils.UtilConstants.GROUPING_LINKER_ERROR;
 import static org.onosproject.yangutils.utils.UtilConstants.INPUT;
@@ -1438,15 +1443,74 @@ public class YangResolutionInfoImpl<T>
             throw new DataModelException("Data Model Exception: Entity to resolved is not Resolvable");
         }
 
+        if (entityToResolve instanceof YangXPathResolver) {
+            //Process x-path linking.
+            processXPathLinking(getEntityToResolveInfo(), dataModelRootNode);
+
+        } else {
+
             // Push the initial entity to resolve in stack.
             addInPartialResolvedStack(getEntityToResolveInfo());
 
             // Inter file linking and resolution.
             linkInterFileAndResolve();
 
-        // Resolve the derived types having leafref.
             addDerivedRefTypeToRefTypeResolutionList();
         }
+    }
+
+    /**
+     * Process x-path linking for augment and leaf-ref.
+     *
+     * @param entityToResolveInfo entity to resolve
+     * @param root root node
+     */
+    private void processXPathLinking(YangEntityToResolveInfoImpl<T> entityToResolveInfo,
+                                     YangReferenceResolver root) {
+        YangXpathLinker<T> xPathLinker = new YangXpathLinker<T>();
+        T entityToResolve = entityToResolveInfo.getEntityToResolve();
+        if (entityToResolve instanceof YangAugment) {
+            YangNode targetNode = null;
+            YangAugment augment = (YangAugment) entityToResolve;
+            targetNode = xPathLinker.processAugmentXpathLinking(augment.getTargetNode(),
+                    (YangNode) root);
+            if (targetNode != null) {
+                if (targetNode instanceof YangAugmentableNode) {
+                    detectCollisionForAugmentedNode(targetNode, augment);
+                    ((YangAugmentableNode) targetNode).addAugmentation(augment);
+                    augment.setAugmentedNode(targetNode);
+                    Resolvable resolvable = (Resolvable) entityToResolve;
+                    resolvable.setResolvableStatus(RESOLVED);
+                } else {
+                    throw new LinkerException("Invalid target node type " + targetNode.getNodeType() + " for "
+                            + augment.getName());
+                }
+            } else {
+                throw new LinkerException("Failed to link " + augment.getName());
+            }
+        } else if (entityToResolve instanceof YangLeafRef) {
+            YangLeafRef leafRef = (YangLeafRef) entityToResolve;
+            Object target = xPathLinker.processLeafRefXpathLinking(leafRef.getAtomicPath(),
+                    (YangNode) root);
+            if (target != null) {
+                YangLeaf leaf = null;
+                YangLeafList leafList = null;
+                leafRef.setReferredLeafOrLeafList(target);
+                if (target instanceof YangLeaf) {
+                    leaf = (YangLeaf) target;
+                    leafRef.setEffectiveDataType(leaf.getDataType());
+                } else {
+                    leafList = (YangLeafList) target;
+                    leafRef.setEffectiveDataType(leafList.getDataType());
+                }
+                leafRef.setResolvableStatus(RESOLVED);
+                //TODO: add logic for leaf-ref for path predicates.
+            } else {
+                throw new LinkerException("YANG file error: Unable to find base leaf/leaf-list for given leafref "
+                        + leafRef.getPath());
+            }
+        }
+    }
 
     /**
      * Returns the referenced prefix of entity under resolution.

+/*
+ * Copyright 2016-present Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.yangutils.linker.impl;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.Stack;
+
+import org.onosproject.yangutils.datamodel.YangAtomicPath;
+import org.onosproject.yangutils.datamodel.YangAugment;
+import org.onosproject.yangutils.datamodel.YangImport;
+import org.onosproject.yangutils.datamodel.YangInclude;
+import org.onosproject.yangutils.datamodel.YangLeaf;
+import org.onosproject.yangutils.datamodel.YangLeafList;
+import org.onosproject.yangutils.datamodel.YangLeavesHolder;
+import org.onosproject.yangutils.datamodel.YangModule;
+import org.onosproject.yangutils.datamodel.YangNode;
+import org.onosproject.yangutils.datamodel.YangNodeIdentifier;
+import org.onosproject.yangutils.datamodel.YangSubModule;
+import org.onosproject.yangutils.datamodel.YangUses;
+import org.onosproject.yangutils.linker.exceptions.LinkerException;
+
+/**
+ * Represents x-path linking.
+ *
+ * @param <T> x-path linking can be done for target node or for target leaf/leaf-list
+ */
+public class YangXpathLinker<T> {
+
+    /**
+     * Enum for prefix resolver type when augment has come in path.
+     */
+    private static enum PrefixResolverType {
+
+        /**
+         * When prefix changes from inter file to intra file.
+         */
+        INTER_TO_INTRA,
+
+        /**
+         * When prefix changes from intra file to inter file.
+         */
+        INTRA_TO_INTER,
+
+        /**
+         * When prefix changes from one inter file to other inter file.
+         */
+        INTER_TO_INTER,
+
+        /**
+         * When no prefix change occurres.
+         */
+        NO_PREFIX_CHANGE_FOR_INTRA,
+
+        /**
+         * When no prefix change occurres.
+         */
+        NO_PREFIX_CHANGE_FOR_INTER
+    }
+
+    private List<YangAtomicPath> absPaths;
+    private YangNode rootNode;
+    private PrefixResolverType type;
+    private String curPrefix;
+    private Map<YangAtomicPath, YangNode> resolvedNodes;
+
+    /**
+     * Creates an instance of x-path linker.
+     */
+    public YangXpathLinker() {
+        absPaths = new ArrayList<>();
+        setResolvedNodes(new HashMap<>());
+    }
+
+    /**
+     * Returns list of target nodes paths.
+     *
+     * @return target nodes paths
+     */
+    private List<YangAtomicPath> getAbsPaths() {
+        return absPaths;
+    }
+
+    /**
+     * Sets target nodes paths.
+     *
+     * @param absPaths target nodes paths
+     */
+    private void setAbsPaths(List<YangAtomicPath> absPaths) {
+        this.absPaths = absPaths;
+    }
+
+    /**
+     * Returns current prefix.
+     *
+     * @return current prefix
+     */
+    private String getCurPrefix() {
+        return curPrefix;
+    }
+
+    /**
+     * Sets current prefix.
+     *
+     * @param curPrefix current prefix
+     */
+    private void setCurPrefix(String curPrefix) {
+        this.curPrefix = curPrefix;
+    }
+
+    /**
+     * Return root node.
+     *
+     * @return root Node
+     */
+    private YangNode getRootNode() {
+        return rootNode;
+    }
+
+    /**
+     * Sets root node.
+     *
+     * @param rootNode root node
+     */
+    private void setRootNode(YangNode rootNode) {
+        this.rootNode = rootNode;
+    }
+
+    /**
+     * Returns prefix resolver type.
+     *
+     * @return prefix resolver type
+     */
+    private PrefixResolverType getPrefixResolverType() {
+        return type;
+    }
+
+    /**
+     * Sets prefix resolver type.
+     *
+     * @param type prefix resolver type
+     */
+    private void setPrefixResolverType(PrefixResolverType type) {
+        this.type = type;
+    }
+
+    /**
+     * Returns resolved nodes.
+     *
+     * @return resolved nodes
+     */
+    public Map<YangAtomicPath, YangNode> getResolvedNodes() {
+        return resolvedNodes;
+    }
+
+    /**
+     * Sets resolved nodes.
+     *
+     * @param resolvedNodes resolved nodes
+     */
+    private void setResolvedNodes(Map<YangAtomicPath, YangNode> resolvedNodes) {
+        this.resolvedNodes = resolvedNodes;
+    }
+
+    /**
+     * Adds node to resolved nodes.
+     *
+     * @param path absolute path
+     * @param node resolved node
+     */
+    private void addToResolvedNodes(YangAtomicPath path, YangNode node) {
+        getResolvedNodes().put(path, node);
+    }
+
+    /**
+     * Returns list of augment nodes.
+     *
+     * @param node root node
+     * @return list of augment nodes
+     */
+    public List<YangAugment> getListOfYangAugment(YangNode node) {
+        node = node.getChild();
+        List<YangAugment> augments = new ArrayList<>();
+        while (node != null) {
+            if (node instanceof YangAugment) {
+                augments.add((YangAugment) node);
+            }
+            node = node.getNextSibling();
+        }
+        return augments;
+    }
+
+    /**
+     * Process absolute node path for target leaf.
+     *
+     * @param absPaths absolute path node list
+     * @param root root node
+     * @return linked target node
+     */
+    public T processLeafRefXpathLinking(List<YangAtomicPath> absPaths, YangNode root) {
+
+        YangNode targetNode = null;
+        setRootNode(root);
+        YangAtomicPath leafRefPath = absPaths.get(absPaths.size() - 1);
+
+        // When leaf-ref path contains only one absolute path.
+        if (absPaths.size() == 1) {
+            targetNode = getTargetNodewhenSizeIsOne(absPaths);
+        } else {
+            absPaths.remove(absPaths.size() - 1);
+
+            setAbsPaths(absPaths);
+            targetNode = parseData(root);
+        }
+        if (targetNode == null) {
+            targetNode = parsePath(getIncludedNode(root));
+        }
+
+        if (targetNode != null) {
+            YangLeaf targetLeaf = searchReferredLeaf(targetNode, leafRefPath.getNodeIdentifier().getName());
+            if (targetLeaf == null) {
+                YangLeafList targetLeafList = searchReferredLeafList(targetNode,
+                        leafRefPath.getNodeIdentifier().getName());
+                if (targetLeafList != null) {
+                    return (T) targetLeafList;
+                } else {
+                    throw new LinkerException(
+                            "YANG file error: Unable to find base leaf/leaf-list for given leafref "
+                                    + leafRefPath.getNodeIdentifier().getName());
+                }
+            }
+            return (T) targetLeaf;
+        }
+        return null;
+    }
+
+    /**
+     * Returns target node when leaf-ref has only one absolute path in list.
+     *
+     * @param absPaths absolute paths
+     * @return target node
+     */
+    private YangNode getTargetNodewhenSizeIsOne(List<YangAtomicPath> absPaths) {
+        if (absPaths.get(0).getNodeIdentifier().getPrefix() != null
+                && !absPaths.get(0).getNodeIdentifier().getPrefix().equals(getRootsPrefix(getRootNode()))) {
+            return getImportedNode(getRootNode(), absPaths.get(0).getNodeIdentifier());
+        }
+        return getRootNode();
+
+    }
+
+    /**
+     * Process absolute node path linking for augment.
+     *
+     * @param absPaths absolute path node list
+     * @param root root node
+     * @return linked target node
+     */
+    public YangNode processAugmentXpathLinking(List<YangAtomicPath> absPaths, YangNode root) {
+
+        setAbsPaths(absPaths);
+        setRootNode(root);
+
+        YangNode targetNode = parseData(root);
+
+        if (targetNode == null) {
+            targetNode = parsePath(getIncludedNode(root));
+        }
+        return targetNode;
+
+    }
+
+    /**
+     * Searches for the referred leaf in target node.
+     *
+     * @param targetNode target node
+     * @param leafName leaf name
+     * @return target leaf
+     */
+    private YangLeaf searchReferredLeaf(YangNode targetNode, String leafName) {
+        if (!(targetNode instanceof YangLeavesHolder)) {
+            throw new LinkerException("Refered node " + targetNode.getName() +
+                    "should be of type leaves holder ");
+        }
+        YangLeavesHolder holder = (YangLeavesHolder) targetNode;
+        List<YangLeaf> leaves = holder.getListOfLeaf();
+        for (YangLeaf leaf : leaves) {
+            if (leaf.getName().equals(leafName)) {
+                return leaf;
+            }
+        }
+        return null;
+    }
+
+    /**
+     * Searches for the referred leaf-list in target node.
+     *
+     * @param targetNode target node
+     * @param leafListName leaf-list name
+     * @return target leaf-list
+     */
+    private YangLeafList searchReferredLeafList(YangNode targetNode, String leafListName) {
+        if (!(targetNode instanceof YangLeavesHolder)) {
+            throw new LinkerException("Refered node " + targetNode.getName() +
+                    "should be of type leaves holder ");
+        }
+        YangLeavesHolder holder = (YangLeavesHolder) targetNode;
+        List<YangLeafList> leavesList = holder.getListOfLeafList();
+        for (YangLeafList leafList : leavesList) {
+            if (leafList.getName().equals(leafListName)) {
+                return leafList;
+            }
+        }
+        return null;
+    }
+
+    /**
+     * Process linking using for node identifier for inter/intra file.
+     *
+     * @param root root node
+     * @return linked target node
+     */
+    private YangNode parseData(YangNode root) {
+        String rootPrefix = getRootsPrefix(root);
+        Iterator<YangAtomicPath> pathIterator = getAbsPaths().iterator();
+        YangAtomicPath path = pathIterator.next();
+        if (path.getNodeIdentifier().getPrefix() != null
+                && !path.getNodeIdentifier().getPrefix().equals(rootPrefix)) {
+            return parsePath(getImportedNode(root, path.getNodeIdentifier()));
+        } else {
+            return parsePath(root);
+        }
+    }
+
+    /**
+     * Process linking of target node in root node.
+     *
+     * @param root root node
+     * @return linked target node
+     */
+    private YangNode parsePath(YangNode root) {
+
+        YangNode tempNode = root;
+        Stack<YangNode> linkerStack = new Stack<>();
+        Iterator<YangAtomicPath> pathIterator = getAbsPaths().iterator();
+        YangAtomicPath tempPath = pathIterator.next();
+        setCurPrefix(tempPath.getNodeIdentifier().getPrefix());
+        int index = 0;
+        YangNode tempAugment = null;
+        do {
+
+            if (tempNode instanceof YangUses) {
+                tempNode = handleUsesNode(tempNode, tempPath.getNodeIdentifier());
+                if (pathIterator.hasNext()) {
+                    tempPath = pathIterator.next();
+                    index++;
+                } else {
+                    addToResolvedNodes(tempPath, tempNode);
+                    return tempNode;
+                }
+            }
+
+            if (tempPath.getNodeIdentifier().getPrefix() == null) {
+                tempAugment = resolveIntraFileAugment(tempPath, root);
+            } else {
+                tempAugment = resolveInterFileAugment(tempPath, root);
+            }
+
+            if (tempAugment != null) {
+                linkerStack.push(tempNode);
+                tempNode = tempAugment;
+            }
+
+            tempNode = searchTargetNode(tempNode, tempPath.getNodeIdentifier());
+            if (tempNode == null && linkerStack.size() != 0) {
+                tempNode = linkerStack.peek();
+                linkerStack.pop();
+                tempNode = searchTargetNode(tempNode, tempPath.getNodeIdentifier());
+            }
+
+            if (tempNode != null) {
+                addToResolvedNodes(tempPath, tempNode);
+            }
+
+            if (index == getAbsPaths().size() - 1) {
+                break;
+            }
+            tempPath = pathIterator.next();
+            index++;
+        } while (validate(tempNode, index));
+        return tempNode;
+    }
+
+    /**
+     * Resolves intra file augment linking.
+     *
+     * @param tempPath temporary absolute path
+     * @param root root node
+     * @return linked target node
+     */
+    private YangNode resolveIntraFileAugment(YangAtomicPath tempPath, YangNode root) {
+        YangNode tempAugment = null;
+        setPrefixResolverType(PrefixResolverType.NO_PREFIX_CHANGE_FOR_INTRA);
+        if (getCurPrefix() != tempPath.getNodeIdentifier().getPrefix()) {
+            setPrefixResolverType(PrefixResolverType.INTRA_TO_INTER);
+            root = getIncludedNode(getRootNode());
+        }
+
+        setCurPrefix(tempPath.getNodeIdentifier().getPrefix());
+        tempAugment = getAugment(tempPath.getNodeIdentifier(), root, getAbsPaths());
+        if (tempAugment == null) {
+            tempAugment = getAugment(tempPath.getNodeIdentifier(), getRootNode(), getAbsPaths());
+        }
+        return tempAugment;
+    }
+
+    /**
+     * Resolves inter file augment linking.
+     *
+     * @param tempPath temporary absolute path
+     * @param root root node
+     * @return linked target node
+     */
+    private YangNode resolveInterFileAugment(YangAtomicPath tempPath, YangNode root) {
+
+        YangNode tempAugment = null;
+        if (tempPath.getNodeIdentifier().getPrefix().equals(getCurPrefix())) {
+            setPrefixResolverType(PrefixResolverType.NO_PREFIX_CHANGE_FOR_INTER);
+        } else {
+            setCurPrefix(tempPath.getNodeIdentifier().getPrefix());
+            setPrefixResolverType(PrefixResolverType.INTER_TO_INTER);
+            if (getCurPrefix() == null) {
+                setPrefixResolverType(PrefixResolverType.INTER_TO_INTRA);
+            }
+            root = getImportedNode(getRootNode(), tempPath.getNodeIdentifier());
+        }
+        tempAugment = getAugment(tempPath.getNodeIdentifier(), root, getAbsPaths());
+        if (tempAugment == null && getPrefixResolverType().equals(PrefixResolverType.INTER_TO_INTER)) {
+            return resolveInterToInterFileAugment(root);
+        }
+        return tempAugment;
+    }
+
+    /**
+     * Resolves augment when prefix changed from inter file to inter file.
+     * it may be possible that the prefix used in imported module is different the
+     * given list of node identifiers.
+     *
+     * @param root root node
+     * @return target node
+     */
+    private YangNode resolveInterToInterFileAugment(YangNode root) {
+        List<YangAugment> augments = getListOfYangAugment(root);
+        int index;
+        List<YangAtomicPath> absPaths = new ArrayList<>();
+        for (YangAugment augment : augments) {
+            index = 0;
+
+            for (YangAtomicPath path : augment.getTargetNode()) {
+
+                if (!searchForAugmentInImportedNode(path.getNodeIdentifier(), index)) {
+                    absPaths.clear();
+                    break;
+                }
+                absPaths.add(path);
+                index++;
+            }
+            if (!absPaths.isEmpty() && absPaths.size() == getAbsPaths().size() - 1) {
+                return augment;
+            } else {
+                absPaths.clear();
+            }
+        }
+        return null;
+    }
+
+    /**
+     * Searches for the augment node in imported module when prefix has changed from
+     * inter file to inter file.
+     * @param nodeId node id
+     * @param index index
+     * @return true if found
+     */
+    private boolean searchForAugmentInImportedNode(YangNodeIdentifier nodeId, int index) {
+        YangNodeIdentifier tempNodeId = getAbsPaths().get(index).getNodeIdentifier();
+        return nodeId.getName().equals(tempNodeId.getName());
+    }
+
+    /**
+     * Returns augment node.
+     *
+     * @param tempNodeId temporary absolute path id
+     * @param root root node
+     * @return linked target node
+     */
+    private YangNode getAugment(YangNodeIdentifier tempNodeId, YangNode root, List<YangAtomicPath> absPaths) {
+        String augmentName = getAugmentNodeIdentifier(tempNodeId, absPaths);
+        if (augmentName != null) {
+            return searchAugmentNode(root, augmentName);
+        }
+        return null;
+    }
+
+    /**
+     * Process linking using import list.
+     *
+     * @param root root node
+     * @param nodeId node identifier
+     * @return linked target node
+     */
+    private YangNode getImportedNode(YangNode root, YangNodeIdentifier nodeId) {
+
+        List<YangImport> importList = new ArrayList<>();
+
+        if (root instanceof YangModule) {
+            importList = ((YangModule) root).getImportList();
+        } else {
+            importList = ((YangSubModule) root).getImportList();
+        }
+
+        for (YangImport imported : importList) {
+            if (imported.getPrefixId().equals(nodeId.getPrefix())) {
+                return imported.getImportedNode();
+            }
+        }
+
+        return root;
+    }
+
+    /**
+     * Process linking using include list.
+     *
+     * @param root root node
+     * @return linked target node
+     */
+    private YangNode getIncludedNode(YangNode root) {
+
+        List<YangInclude> includeList = new ArrayList<>();
+
+        if (root instanceof YangModule) {
+            includeList = ((YangModule) root).getIncludeList();
+        } else {
+            includeList = ((YangSubModule) root).getIncludeList();
+        }
+
+        for (YangInclude included : includeList) {
+            return included.getIncludedNode();
+        }
+
+        return root;
+    }
+
+    /**
+     * Returns augments node id.
+     *
+     * @param nodeId node identifier
+     * @return augment node id
+     */
+    private String getAugmentNodeIdentifier(YangNodeIdentifier nodeId, List<YangAtomicPath> absPaths) {
+
+        Iterator<YangAtomicPath> nodeIdIterator = absPaths.iterator();
+        YangAtomicPath tempNodeId = null;
+        StringBuilder builder = new StringBuilder();
+        while (nodeIdIterator.hasNext()) {
+            tempNodeId = nodeIdIterator.next();
+            if (!tempNodeId.getNodeIdentifier().equals(nodeId)) {
+                if (tempNodeId.getNodeIdentifier().getPrefix() != null
+                        && (getPrefixResolverType().equals(PrefixResolverType.INTER_TO_INTER)
+                                || getPrefixResolverType().equals(PrefixResolverType.INTRA_TO_INTER))) {
+                    builder.append("/" + tempNodeId.getNodeIdentifier().getPrefix());
+                    builder.append(":" + tempNodeId.getNodeIdentifier().getName());
+                } else {
+                    builder.append("/" + tempNodeId.getNodeIdentifier().getName());
+                }
+            } else {
+                return builder.toString();
+            }
+        }
+        return null;
+    }
+
+    /**
+     * Searches augment node in root node.
+     *
+     * @param node root node
+     * @param tempNodeId node identifier
+     * @return target augment node
+     */
+    private YangNode searchAugmentNode(YangNode node, String tempNodeId) {
+        node = node.getChild();
+        while (node != null) {
+            if (node instanceof YangAugment) {
+                if (((YangAugment) node).getName().equals(tempNodeId)) {
+                    return node;
+                }
+            }
+            node = node.getNextSibling();
+        }
+        return null;
+    }
+
+    /**
+     * Validates for target node if target node found or not.
+     *
+     * @param tempNode temporary node
+     * @param index current index of list
+     * @return false if target node found
+     */
+    private boolean validate(YangNode tempNode, int index) {
+
+        int size = getAbsPaths().size();
+        if (tempNode != null && index != size) {
+            return true;
+        } else if (tempNode != null && index == size) {
+            return false;
+            // this is your target node.
+        } else if (tempNode == null && index != size) {
+            return false;
+            // this could be in submodule as well.
+        }
+        return false;
+    }
+
+    /**
+     * Searches target node in root node.
+     *
+     * @param node root node
+     * @param curNodeId YANG node identifier
+     * @return linked target node
+     */
+    private YangNode searchTargetNode(YangNode node, YangNodeIdentifier curNodeId) {
+
+        if (node != null) {
+            node = node.getChild();
+        }
+
+        while (node != null) {
+            if (node.getName().equals(curNodeId.getName())) {
+                return node;
+            }
+            node = node.getNextSibling();
+        }
+        return null;
+    }
+
+    /**
+     * Handles linking when uses node is present.
+     *
+     * @param node uses node
+     * @param curNodeId current node id
+     * @return linked node
+     */
+    private YangNode handleUsesNode(YangNode node, YangNodeIdentifier curNodeId) {
+        YangNode tempNode = null;
+        tempNode = searchInUsesNode((YangUses) node, curNodeId);
+        if (tempNode != null) {
+            return tempNode;
+        }
+        return null;
+    }
+
+    /**
+     * Searches target node in uses resolved list.
+     *
+     * @param uses uses node
+     * @param curNodeId current node id
+     * @return linked target node
+     */
+    private YangNode searchInUsesNode(YangUses uses, YangNodeIdentifier curNodeId) {
+
+        List<YangNode> resolvedNodes = uses.getUsesResolvedNodeList();
+        for (YangNode node : resolvedNodes) {
+            if (node.getName().equals(curNodeId.getName())) {
+                return node;
+            }
+        }
+        return null;
+    }
+
+    /**
+     * Returns root prefix.
+     *
+     * @param root root node
+     * @return root prefix
+     */
+    private String getRootsPrefix(YangNode root) {
+        if (root instanceof YangModule) {
+            return ((YangModule) root).getPrefix();
+        } else {
+            return ((YangSubModule) root).getPrefix();
+        }
+    }
+
+}

@@ -18,18 +18,20 @@ package org.onosproject.yangutils.parser.impl.listeners;
 
 import java.util.List;
 
+import org.onosproject.yangutils.datamodel.YangAtomicPath;
 import org.onosproject.yangutils.datamodel.YangAugment;
 import org.onosproject.yangutils.datamodel.YangModule;
 import org.onosproject.yangutils.datamodel.YangNode;
-import org.onosproject.yangutils.datamodel.YangNodeIdentifier;
 import org.onosproject.yangutils.datamodel.YangSubModule;
 import org.onosproject.yangutils.datamodel.YangUses;
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
 import org.onosproject.yangutils.datamodel.utils.Parsable;
+import org.onosproject.yangutils.linker.impl.YangResolutionInfoImpl;
 import org.onosproject.yangutils.parser.antlrgencode.GeneratedYangParser;
 import org.onosproject.yangutils.parser.exceptions.ParserException;
 import org.onosproject.yangutils.parser.impl.TreeWalkListener;
 
+import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.addResolutionInfo;
 import static org.onosproject.yangutils.datamodel.utils.GeneratedLanguage.JAVA_GENERATION;
 import static org.onosproject.yangutils.datamodel.utils.YangConstructType.AUGMENT_DATA;
 import static org.onosproject.yangutils.datamodel.utils.YangConstructType.CASE_DATA;
@@ -38,22 +40,17 @@ import static org.onosproject.yangutils.datamodel.utils.YangConstructType.DESCRI
 import static org.onosproject.yangutils.datamodel.utils.YangConstructType.REFERENCE_DATA;
 import static org.onosproject.yangutils.datamodel.utils.YangConstructType.STATUS_DATA;
 import static org.onosproject.yangutils.datamodel.utils.YangConstructType.WHEN_DATA;
-import static org.onosproject.yangutils.parser.impl.parserutils.AugmentListenerUtil.generateNameForAugmentNode;
-import static org.onosproject.yangutils.parser.impl.parserutils.AugmentListenerUtil.getParentsPrefix;
-import static org.onosproject.yangutils.parser.impl.parserutils.AugmentListenerUtil.parserException;
-import static org.onosproject.yangutils.parser.impl.parserutils.AugmentListenerUtil.validateNodeInTargetPath;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerCollisionDetector.detectCollidingChildUtil;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorLocation.ENTRY;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorLocation.EXIT;
-import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorMessageConstruction
-        .constructExtendedListenerErrorMessage;
-import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorMessageConstruction
-        .constructListenerErrorMessage;
+import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorMessageConstruction.constructExtendedListenerErrorMessage;
+import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorMessageConstruction.constructListenerErrorMessage;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorType.INVALID_HOLDER;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorType.MISSING_CURRENT_HOLDER;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorType.MISSING_HOLDER;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorType.UNHANDLED_PARSED_DATA;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerUtil.getValidAbsoluteSchemaNodeId;
+import static org.onosproject.yangutils.parser.impl.parserutils.ListenerUtil.removeQuotesAndHandleConcat;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerValidation.checkStackIsNotEmpty;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerValidation.validateCardinalityMaxOne;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerValidation.validateMutuallyExclusiveChilds;
@@ -106,7 +103,7 @@ public final class AugmentListener {
         checkStackIsNotEmpty(listener, MISSING_HOLDER, AUGMENT_DATA, ctx.augment().getText(), ENTRY);
 
         // Validate augment argument string
-        List<YangNodeIdentifier> targetNodes = getValidAbsoluteSchemaNodeId(ctx.augment().getText(),
+        List<YangAtomicPath> targetNodes = getValidAbsoluteSchemaNodeId(ctx.augment().getText(),
                 AUGMENT_DATA, ctx);
 
         // Validate sub statement cardinality.
@@ -126,7 +123,7 @@ public final class AugmentListener {
             // TODO: handle in linker.
 
             yangAugment.setTargetNode(targetNodes);
-            yangAugment.setName(generateNameForAugmentNode(curData, targetNodes, listener));
+            yangAugment.setName(removeQuotesAndHandleConcat(ctx.augment().getText()));
 
             try {
                 curNode.addChild(yangAugment);
@@ -135,6 +132,13 @@ public final class AugmentListener {
                         AUGMENT_DATA, ctx.augment().getText(), ENTRY, e.getMessage()));
             }
             listener.getParsedDataStack().push(yangAugment);
+
+            // Add resolution information to the list
+            YangResolutionInfoImpl resolutionInfo = new YangResolutionInfoImpl<YangAugment>(yangAugment,
+                    curNode, line,
+                    charPositionInLine);
+            addToResolutionList(resolutionInfo, ctx);
+
         } else {
             throw new ParserException(constructListenerErrorMessage(INVALID_HOLDER, AUGMENT_DATA,
                     ctx.augment().getText(), ENTRY));
@@ -177,35 +181,19 @@ public final class AugmentListener {
     }
 
     /**
-     * Validates whether the current target node path is correct or not.
+     * Add to resolution list.
      *
-     * @param targetNodes list of target nodes
-     * @param curNode current Node
-     * @param ctx augment context
-     * @param curNode current YANG node
+     * @param resolutionInfo resolution information.
+     * @param ctx            context object of the grammar rule
      */
-    private static void validateTargetNodePath(List<YangNodeIdentifier> targetNodes, YangNode curNode,
+    private static void addToResolutionList(YangResolutionInfoImpl<YangAugment> resolutionInfo,
                                             GeneratedYangParser.AugmentStatementContext ctx) {
 
-        YangNodeIdentifier moduleId = targetNodes.get(0);
-        if (moduleId.getPrefix() == null) {
-            if (!moduleId.getName().equals(curNode.getName())) {
-                throw parserException(ctx);
-            } else {
-                //validateNodeInTargetPath(curNode, targetNodes, ctx);
-                // TODO: handle in linker.
-            }
-        } else {
-            String parentPrefix = getParentsPrefix(curNode);
-            if (parentPrefix != null) {
-                if (!parentPrefix.equals(moduleId.getPrefix())) {
-                    // TODO: handle in linker.
-                } else {
-                    validateNodeInTargetPath(curNode, targetNodes, ctx);
-                }
-            } else {
-                // TODO: handle in linker.
-            }
+        try {
+            addResolutionInfo(resolutionInfo);
+        } catch (DataModelException e) {
+            throw new ParserException(constructExtendedListenerErrorMessage(UNHANDLED_PARSED_DATA,
+                    AUGMENT_DATA, ctx.augment().getText(), EXIT, e.getMessage()));
         }
     }
 }

@@ -709,10 +709,10 @@ public final class ListenerUtil {
      * @param ctx yang construct's context to get the line number and character position
      * @return target nodes list of absolute schema node id
      */
-    public static List<YangNodeIdentifier> getValidAbsoluteSchemaNodeId(String argumentString,
+    public static List<YangAtomicPath> getValidAbsoluteSchemaNodeId(String argumentString,
             YangConstructType yangConstructType, ParserRuleContext ctx) {
 
-        List<YangNodeIdentifier> targetNodes = new LinkedList<>();
+        List<YangAtomicPath> targetNodes = new ArrayList<>();
         YangNodeIdentifier yangNodeIdentifier;
         String tmpSchemaNodeId = removeQuotesAndHandleConcat(argumentString);
 
@@ -728,7 +728,9 @@ public final class ListenerUtil {
         String[] tmpData = tmpSchemaNodeId.replaceFirst(CARET + SLASH, EMPTY_STRING).split(SLASH);
         for (String nodeIdentifiers : tmpData) {
             yangNodeIdentifier = getValidNodeIdentifier(nodeIdentifiers, yangConstructType, ctx);
-            targetNodes.add(yangNodeIdentifier);
+            YangAtomicPath yangAbsPath = new YangAtomicPath();
+            yangAbsPath.setNodeIdentifier(yangNodeIdentifier);
+            targetNodes.add(yangAbsPath);
         }
         return targetNodes;
     }

@@ -17,11 +17,9 @@
 package org.onosproject.yangutils.plugin.manager;
 
 import java.io.File;
-import java.io.FileInputStream;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
-import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;
 import java.nio.file.Files;
 import java.nio.file.StandardCopyOption;
@@ -41,6 +39,7 @@ import org.onosproject.yangutils.datamodel.YangNode;
 import org.slf4j.Logger;
 import org.sonatype.plexus.build.incremental.BuildContext;
 
+import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.deSerializeDataModel;
 import static org.onosproject.yangutils.utils.UtilConstants.HYPHEN;
 import static org.onosproject.yangutils.utils.UtilConstants.JAR;
 import static org.onosproject.yangutils.utils.UtilConstants.PERIOD;
@@ -155,32 +154,6 @@ public final class YangPluginUtils {
     }
 
     /**
-     * Returns de-serializes YANG data-model nodes.
-     *
-     * @param serailizedfileInfoSet YANG file info set
-     * @return de-serializes YANG data-model nodes
-     * @throws IOException when fails do IO operations
-     */
-    public static List<YangNode> deSerializeDataModel(List<String> serailizedfileInfoSet) throws IOException {
-
-        List<YangNode> nodes = new ArrayList<>();
-        for (String fileInfo : serailizedfileInfoSet) {
-            YangNode node = null;
-            try {
-                FileInputStream fileInputStream = new FileInputStream(fileInfo);
-                ObjectInputStream objectInputStream = new ObjectInputStream(fileInputStream);
-                node = (YangNode) objectInputStream.readObject();
-                nodes.add(node);
-                objectInputStream.close();
-                fileInputStream.close();
-            } catch (IOException | ClassNotFoundException e) {
-                throw new IOException(fileInfo + " not found.");
-            }
-        }
-        return nodes;
-    }
-
-    /**
      * Returns list of jar path.
      *
      * @param project         maven project
@@ -188,7 +161,7 @@ public final class YangPluginUtils {
      * @param remoteRepos     remote repository
      * @return list of jar paths
      */
-    private static List<String> resolveDependecyJarPath(MavenProject project, ArtifactRepository localRepository,
+    private static List<String> resolveDependencyJarPath(MavenProject project, ArtifactRepository localRepository,
                                                          List<ArtifactRepository> remoteRepos) {
 
         StringBuilder path = new StringBuilder();
@@ -232,7 +205,7 @@ public final class YangPluginUtils {
                                                              List<ArtifactRepository> remoteRepos, String directory)
             throws IOException {
 
-        List<String> dependeciesJarPaths = resolveDependecyJarPath(project, localRepository, remoteRepos);
+        List<String> dependeciesJarPaths = resolveDependencyJarPath(project, localRepository, remoteRepos);
         List<YangNode> resolvedDataModelNodes = new ArrayList<>();
         for (String dependecy : dependeciesJarPaths) {
             resolvedDataModelNodes.addAll(deSerializeDataModel(parseJarFile(dependecy, directory)));

@@ -87,8 +87,14 @@ public class YangUtilManager
     /**
      * Source directory for generated files.
      */
-    @Parameter(property = "genFilesDir", defaultValue = "src/main/java")
-    private String genFilesDir;
+    @Parameter(property = "classFileDir", defaultValue = "target/generated-sources")
+    private String classFileDir;
+
+    /**
+     * Source directory for manager's generated files.
+     */
+    @Parameter(property = "managerFileDir", defaultValue = "src/main/java")
+    private String managerFileDir;
 
     /**
      * Base directory for project.
@@ -153,11 +159,12 @@ public class YangUtilManager
             /*
              * For deleting the generated code in previous build.
              */
-            deleteDirectory(getDirectory(baseDir, genFilesDir) + DEFAULT_PKG);
+            deleteDirectory(getDirectory(baseDir, classFileDir) + DEFAULT_PKG);
             deleteDirectory(getDirectory(baseDir, outputDirectory));
 
             String searchDir = getDirectory(baseDir, yangFilesDir);
-            String codeGenDir = getDirectory(baseDir, genFilesDir) + SLASH;
+            String codeGenDir = getDirectory(baseDir, classFileDir) + SLASH;
+            String managerCodeGenDir = getDirectory(baseDir, managerFileDir) + SLASH;
 
             // Creates conflict resolver and set values to it.
             YangToJavaNamingConflictUtil conflictResolver = new YangToJavaNamingConflictUtil();
@@ -167,6 +174,7 @@ public class YangUtilManager
             conflictResolver.setPrefixForIdentifier(prefixForIdentifier);
             YangPluginConfig yangPlugin = new YangPluginConfig();
             yangPlugin.setCodeGenDir(codeGenDir);
+            yangPlugin.setManagerCodeGenDir(managerCodeGenDir);
             yangPlugin.setConflictResolver(conflictResolver);
 
             /*
@@ -195,18 +203,18 @@ public class YangUtilManager
             // Serialize data model.
             serializeDataModel(getDirectory(baseDir, outputDirectory), getYangFileInfoSet(), project, true);
 
-            addToCompilationRoot(getDirectory(baseDir, genFilesDir), project, context);
+            addToCompilationRoot(codeGenDir, project, context);
+            addToCompilationRoot(managerCodeGenDir, project, context);
 
             copyYangFilesToTarget(getYangFileInfoSet(), getDirectory(baseDir, outputDirectory), project);
         } catch (IOException | ParserException e) {
-            getLog().info(e);
             String fileName = "";
             if (getCurYangFileInfo() != null) {
                 fileName = getCurYangFileInfo().getYangFileName();
             }
             try {
                 translatorErrorHandler(getRootNode());
-                deleteDirectory(getDirectory(baseDir, genFilesDir) + DEFAULT_PKG);
+                deleteDirectory(getDirectory(baseDir, classFileDir) + DEFAULT_PKG);
             } catch (IOException ex) {
                 throw new MojoExecutionException(
                         "Error handler failed to delete files for data model node.");
@@ -255,14 +263,12 @@ public class YangUtilManager
     public void resolveDependenciesUsingLinker()
             throws MojoExecutionException {
         createYangNodeSet();
-        for (YangFileInfo yangFileInfo : getYangFileInfoSet()) {
-            setCurYangFileInfo(yangFileInfo);
         try {
             yangLinker.resolveDependencies(getYangNodeSet());
         } catch (LinkerException e) {
             throw new MojoExecutionException(e.getMessage());
         }
-        }
+
     }
 
     /**

@@ -122,6 +122,11 @@ public final class GeneratedTempFileType {
     public static final int EVENT_SUBJECT_SETTER_MASK = 524288;
 
     /**
+     * Event subject setter implementation of class.
+     */
+    public static final int AUGMENTE_CLASS_CONSTRUCTOR_MASK = 1048576;
+
+    /**
      * Creates an instance of generated temp file type.
      */
     private GeneratedTempFileType() {

@@ -21,10 +21,6 @@ import java.util.SortedSet;
 import java.util.TreeSet;
 
 import static org.onosproject.yangutils.utils.UtilConstants.ABSTRACT_EVENT;
-import static org.onosproject.yangutils.utils.UtilConstants.ARRAY_LIST;
-import static org.onosproject.yangutils.utils.UtilConstants.AUGMENTATION_HOLDER_CLASS_IMPORT_CLASS;
-import static org.onosproject.yangutils.utils.UtilConstants.AUGMENTED_INFO_CLASS_IMPORT_CLASS;
-import static org.onosproject.yangutils.utils.UtilConstants.AUGMENTED_INFO_CLASS_IMPORT_PKG;
 import static org.onosproject.yangutils.utils.UtilConstants.COLLECTION_IMPORTS;
 import static org.onosproject.yangutils.utils.UtilConstants.EMPTY_STRING;
 import static org.onosproject.yangutils.utils.UtilConstants.EVENT_LISTENER;
@@ -40,9 +36,7 @@ import static org.onosproject.yangutils.utils.UtilConstants.LISTENER_SERVICE;
 import static org.onosproject.yangutils.utils.UtilConstants.NEW_LINE;
 import static org.onosproject.yangutils.utils.UtilConstants.ONOS_EVENT_PKG;
 import static org.onosproject.yangutils.utils.UtilConstants.PERIOD;
-import static org.onosproject.yangutils.utils.UtilConstants.PROVIDED_AUGMENTATION_CLASS_IMPORT_PKG;
 import static org.onosproject.yangutils.utils.UtilConstants.SEMI_COLAN;
-
 import static java.util.Collections.sort;
 
 /**
@@ -220,33 +214,6 @@ public class JavaImportData {
     }
 
     /**
-     * Returns import for array list attribute.
-     *
-     * @return import for array list attribute
-     */
-    public String getImportForArrayList() {
-        return IMPORT + COLLECTION_IMPORTS + PERIOD + ARRAY_LIST + SEMI_COLAN + NEW_LINE;
-    }
-
-    /**
-     * Returns import string for AugmentationHolder class.
-     *
-     * @return import string for AugmentationHolder class
-     */
-    public String getAugmentationHolderImport() {
-        return IMPORT + PROVIDED_AUGMENTATION_CLASS_IMPORT_PKG + PERIOD + AUGMENTATION_HOLDER_CLASS_IMPORT_CLASS;
-    }
-
-    /**
-     * Returns import string for AugmentedInfo class.
-     *
-     * @return import string for AugmentedInfo class
-     */
-    public String getAugmentedInfoImport() {
-        return IMPORT + AUGMENTED_INFO_CLASS_IMPORT_PKG + PERIOD + AUGMENTED_INFO_CLASS_IMPORT_CLASS;
-    }
-
-    /**
      * Returns import string for ListenerService class.
      *
      * @return import string for ListenerService class

@@ -23,7 +23,7 @@ import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.CONSTRUCTOR_IMPL_MASK;
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getConstructor;
-import static org.onosproject.yangutils.translator.tojava.utils.TempJavaCodeFragmentFilesUtils.closeFile;
+import static org.onosproject.yangutils.utils.io.impl.FileSystemUtil.closeFile;
 
 /**
  * Represents implementation of java bean code fragments temporary implementations.
@@ -88,7 +88,7 @@ public class TempJavaBeanFragmentFiles
      */
     private void addConstructor(JavaAttributeInfo attr, YangPluginConfig pluginConfig)
             throws IOException {
-        appendToFile(getConstructorImplTempFileHandle(), getConstructor(getGeneratedJavaClassName(), attr,
+        appendToFile(getConstructorImplTempFileHandle(), getConstructor(attr,
                 getGeneratedJavaFiles(), pluginConfig));
     }
 

@@ -36,7 +36,7 @@ import static org.onosproject.yangutils.translator.tojava.utils.JavaCodeSnippetG
 import static org.onosproject.yangutils.translator.tojava.utils.JavaFileGenerator.generateEnumClassFile;
 import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getEnumJavaAttribute;
 import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getPrefixForIdentifier;
-import static org.onosproject.yangutils.translator.tojava.utils.TempJavaCodeFragmentFilesUtils.closeFile;
+import static org.onosproject.yangutils.utils.io.impl.FileSystemUtil.closeFile;
 import static org.onosproject.yangutils.utils.UtilConstants.EMPTY_STRING;
 import static org.onosproject.yangutils.utils.UtilConstants.REGEX_FOR_FIRST_DIGIT;
 import static org.onosproject.yangutils.utils.UtilConstants.YANG_AUTO_PREFIX;

@@ -29,6 +29,7 @@ import org.onosproject.yangutils.datamodel.YangList;
 import org.onosproject.yangutils.datamodel.YangNode;
 import org.onosproject.yangutils.translator.exception.TranslatorException;
 import org.onosproject.yangutils.translator.tojava.javamodel.JavaLeafInfoContainer;
+import org.onosproject.yangutils.translator.tojava.javamodel.YangJavaAugment;
 import org.onosproject.yangutils.translator.tojava.javamodel.YangJavaGrouping;
 import org.onosproject.yangutils.translator.tojava.javamodel.YangJavaModule;
 import org.onosproject.yangutils.translator.tojava.javamodel.YangJavaSubModule;
@@ -44,6 +45,7 @@ import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.IMPL_CLASS_MASK;
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.INTERFACE_MASK;
 import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.ATTRIBUTES_MASK;
+import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.AUGMENTE_CLASS_CONSTRUCTOR_MASK;
 import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.EQUALS_IMPL_MASK;
 import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.FROM_STRING_IMPL_MASK;
 import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.GETTER_FOR_CLASS_MASK;
@@ -63,10 +65,8 @@ import static org.onosproject.yangutils.translator.tojava.utils.JavaFileGenerato
 import static org.onosproject.yangutils.translator.tojava.utils.JavaFileGenerator.generateImplClassFile;
 import static org.onosproject.yangutils.translator.tojava.utils.JavaFileGenerator.generateInterfaceFile;
 import static org.onosproject.yangutils.translator.tojava.utils.JavaFileGeneratorUtils.getFileObject;
-import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCamelCase;
-import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCapitalCase;
-import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getPackageDirPathFromJavaJPackage;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getRootPackage;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.createPackage;
+import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getAugmentedConstructor;
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getBuildString;
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getDefaultConstructorString;
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getEqualsMethod;
@@ -80,17 +80,13 @@ import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getSetterString;
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getToStringMethod;
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.parseBuilderInterfaceBuildMethodString;
-import static org.onosproject.yangutils.translator.tojava.utils.TempJavaCodeFragmentFilesUtils.addArrayListImport;
-import static org.onosproject.yangutils.translator.tojava.utils.TempJavaCodeFragmentFilesUtils.addAugmentationHoldersImport;
-import static org.onosproject.yangutils.translator.tojava.utils.TempJavaCodeFragmentFilesUtils.addAugmentedInfoImport;
-import static org.onosproject.yangutils.translator.tojava.utils.TempJavaCodeFragmentFilesUtils.closeFile;
-import static org.onosproject.yangutils.translator.tojava.utils.TempJavaCodeFragmentFilesUtils.isAugmentationHolderExtended;
-import static org.onosproject.yangutils.translator.tojava.utils.TempJavaCodeFragmentFilesUtils.isAugmentedInfoExtended;
-import static org.onosproject.yangutils.translator.tojava.utils.TempJavaCodeFragmentFilesUtils.sortImports;
+import static org.onosproject.yangutils.utils.io.impl.FileSystemUtil.closeFile;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaCodeSnippetGen.sortImports;
 import static org.onosproject.yangutils.utils.UtilConstants.ACTIVATE;
 import static org.onosproject.yangutils.utils.UtilConstants.BUILDER;
 import static org.onosproject.yangutils.utils.UtilConstants.COMPONENT;
 import static org.onosproject.yangutils.utils.UtilConstants.DEACTIVATE;
+import static org.onosproject.yangutils.utils.UtilConstants.DEFAULT;
 import static org.onosproject.yangutils.utils.UtilConstants.EMPTY_STRING;
 import static org.onosproject.yangutils.utils.UtilConstants.FOUR_SPACE_INDENTATION;
 import static org.onosproject.yangutils.utils.UtilConstants.IMPL;
@@ -104,12 +100,14 @@ import static org.onosproject.yangutils.utils.UtilConstants.REFERENCE_CARDINALIT
 import static org.onosproject.yangutils.utils.UtilConstants.SEMI_COLAN;
 import static org.onosproject.yangutils.utils.UtilConstants.SERVICE;
 import static org.onosproject.yangutils.utils.UtilConstants.SLASH;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.createPackage;
 import static org.onosproject.yangutils.utils.io.impl.FileSystemUtil.readAppendFile;
-import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.getJavaDoc;
 import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.JavaDocType.GETTER_METHOD;
 import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.JavaDocType.OF_METHOD;
+import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.getJavaDoc;
 import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getAbsolutePackagePath;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCamelCase;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCapitalCase;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getPackageDirPathFromJavaJPackage;
 import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.insertDataIntoJavaFile;
 import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.mergeJavaFiles;
 import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.validateLineLength;
@@ -227,6 +225,10 @@ public class TempJavaFragmentFiles {
     private static final String IMPL_CLASS_FILE_NAME_SUFFIX = IMPL;
 
     /**
+     * File name for augment copy constructor method.
+     */
+    private static final String AUGMENT_CONSTRUCTOR_FILE_NAME = "AugmentConstructor";
+    /**
      * Java file handle for interface file.
      */
     private File interfaceJavaFileHandle;
@@ -302,6 +304,11 @@ public class TempJavaFragmentFiles {
     private boolean isAttributePresent;
 
     /**
+     * Temporary file handle for augments copy constructor method of class.
+     */
+    private File augmentConstructorImplTempFileHandle;
+
+    /**
      * Retrieves the absolute path where the file needs to be generated.
      *
      * @return absolute path where the file needs to be generated
@@ -539,6 +546,7 @@ public class TempJavaFragmentFiles {
             addGeneratedTempFile(ATTRIBUTES_MASK);
             addGeneratedTempFile(GETTER_FOR_CLASS_MASK);
             addGeneratedTempFile(SETTER_FOR_CLASS_MASK);
+            addGeneratedTempFile(AUGMENTE_CLASS_CONSTRUCTOR_MASK);
         }
 
         /*
@@ -617,6 +625,9 @@ public class TempJavaFragmentFiles {
         if ((getGeneratedTempFiles() & FROM_STRING_IMPL_MASK) != 0) {
             setFromStringImplTempFileHandle(getTemporaryFileHandle(FROM_STRING_METHOD_FILE_NAME));
         }
+        if ((getGeneratedTempFiles() & AUGMENTE_CLASS_CONSTRUCTOR_MASK) != 0) {
+            setAugmentConstructorImplTempFileHandle(getTemporaryFileHandle(AUGMENT_CONSTRUCTOR_FILE_NAME));
+        }
 
     }
 
@@ -801,6 +812,24 @@ public class TempJavaFragmentFiles {
     }
 
     /**
+     * Returns augments copy constructor method impl class file.
+     *
+     * @return augments copy constructor method impl class file
+     */
+    public File getAugmentConstructorImplTempFileHandle() {
+        return augmentConstructorImplTempFileHandle;
+    }
+
+    /**
+     * Sets augments copy constructor method impl class.
+     *
+     * @param augmentConstructorImplTempFileHandle augments copy constructor method impl class file
+     */
+    public void setAugmentConstructorImplTempFileHandle(File augmentConstructorImplTempFileHandle) {
+        this.augmentConstructorImplTempFileHandle = augmentConstructorImplTempFileHandle;
+    }
+
+    /**
      * Adds attribute for class.
      *
      * @param attr             attribute info
@@ -973,6 +1002,17 @@ public class TempJavaFragmentFiles {
     }
 
     /**
+     * Adds constructor for augment class.
+     *
+     * @param attr attribute info
+     * @throws IOException when fails to append to temporary file
+     */
+    private void addAugmentConstructor(JavaAttributeInfo attr, YangPluginConfig pluginConfig)
+            throws IOException {
+        appendToFile(getAugmentConstructorImplTempFileHandle(), getAugmentedConstructor(attr, pluginConfig));
+    }
+
+    /**
      * Returns a temporary file handle for the specific file type.
      *
      * @param fileName file name
@@ -981,7 +1021,7 @@ public class TempJavaFragmentFiles {
      */
     File getTemporaryFileHandle(String fileName)
             throws IOException {
-        String path = getTempDirPath();
+        String path = getTempDirPath(getAbsoluteDirPath());
         File dir = new File(path);
         if (!dir.exists()) {
             dir.mkdirs();
@@ -1011,13 +1051,14 @@ public class TempJavaFragmentFiles {
      * Returns data from the temporary files.
      *
      * @param file temporary file handle
+     * @param absolutePath absolute path
      * @return stored data from temporary files
      * @throws IOException when failed to get data from the given file
      */
-    public String getTemporaryDataFromFileHandle(File file)
+    public String getTemporaryDataFromFileHandle(File file, String absolutePath)
             throws IOException {
 
-        String path = getTempDirPath();
+        String path = getTempDirPath(absolutePath);
         if (new File(path + file.getName()).exists()) {
             return readAppendFile(path + file.getName(), EMPTY_STRING);
         } else {
@@ -1029,10 +1070,11 @@ public class TempJavaFragmentFiles {
     /**
      * Returns temporary directory path.
      *
+     * @param absolutePath absolute path
      * @return directory path
      */
-    String getTempDirPath() {
-        return getPackageDirPathFromJavaJPackage(getAbsoluteDirPath()) + SLASH + getGeneratedJavaClassName()
+    String getTempDirPath(String absolutePath) {
+        return getPackageDirPathFromJavaJPackage(absolutePath) + SLASH + getGeneratedJavaClassName()
                 + TEMP_FOLDER_NAME_SUFIX + SLASH;
     }
 
@@ -1208,63 +1250,6 @@ public class TempJavaFragmentFiles {
     }
 
     /**
-     * Resolves groupings java qualified info.
-     *
-     * @param curNode      grouping node
-     * @param pluginConfig plugin configurations
-     * @return groupings java qualified info
-     */
-    public static JavaQualifiedTypeInfo resolveGroupingsQuailifiedInfo(YangNode curNode,
-            YangPluginConfig pluginConfig) {
-
-        JavaFileInfo groupingFileInfo = ((JavaFileInfoContainer) curNode).getJavaFileInfo();
-        JavaQualifiedTypeInfo qualifiedTypeInfo = new JavaQualifiedTypeInfo();
-        if (groupingFileInfo.getPackage() == null) {
-            List<String> parentNames = new ArrayList<>();
-
-            YangNode tempNode = curNode.getParent();
-            YangNode groupingSuperParent = null;
-            while (tempNode != null) {
-                parentNames.add(tempNode.getName());
-                groupingSuperParent = tempNode;
-                tempNode = tempNode.getParent();
-            }
-
-            String pkg = null;
-            JavaFileInfo parentInfo = ((JavaFileInfoContainer) groupingSuperParent).getJavaFileInfo();
-            if (parentInfo.getPackage() == null) {
-                if (groupingSuperParent instanceof YangJavaModule) {
-                    YangJavaModule module = (YangJavaModule) groupingSuperParent;
-                    String modulePkg = getRootPackage(module.getVersion(), module.getNameSpace().getUri(), module
-                            .getRevision().getRevDate(), pluginConfig.getConflictResolver());
-                    pkg = modulePkg;
-                } else if (groupingSuperParent instanceof YangJavaSubModule) {
-                    YangJavaSubModule submodule = (YangJavaSubModule) groupingSuperParent;
-                    String subModulePkg = getRootPackage(submodule.getVersion(),
-                            submodule.getNameSpaceFromModule(submodule.getBelongsTo()),
-                            submodule.getRevision().getRevDate(), pluginConfig.getConflictResolver());
-                    pkg = subModulePkg;
-                }
-            } else {
-                pkg = parentInfo.getPackage();
-            }
-            for (String name : parentNames) {
-                pkg = pkg + PERIOD + getCamelCase(name, pluginConfig.getConflictResolver());
-            }
-
-            qualifiedTypeInfo.setPkgInfo(pkg.toLowerCase());
-            qualifiedTypeInfo.setClassInfo(
-                    getCapitalCase(getCamelCase(curNode.getName(), pluginConfig.getConflictResolver())));
-            return qualifiedTypeInfo;
-
-        } else {
-            qualifiedTypeInfo.setPkgInfo(groupingFileInfo.getPackage().toLowerCase());
-            qualifiedTypeInfo.setClassInfo(getCapitalCase(groupingFileInfo.getJavaName()));
-            return qualifiedTypeInfo;
-        }
-    }
-
-    /**
      * Returns interface fragment files for node.
      *
      * @param node YANG node
@@ -1326,18 +1311,30 @@ public class TempJavaFragmentFiles {
                 if (!(leaf instanceof JavaLeafInfoContainer)) {
                     throw new TranslatorException("Leaf does not have java information");
                 }
+                addJavaSnippetInfoToApplicableTempFiles(getJavaAttributeOfLeaf(leaf, yangPluginConfig),
+                        yangPluginConfig);
+            }
+        }
+    }
+
+    /**
+     * Returns java attribute for leaf.
+     *
+     * @param leaf             YANG leaf
+     * @param yangPluginConfig plugin configurations
+     * @return java attribute for leaf
+     */
+    private JavaAttributeInfo getJavaAttributeOfLeaf(YangLeaf leaf,
+                                                     YangPluginConfig yangPluginConfig) {
         JavaLeafInfoContainer javaLeaf = (JavaLeafInfoContainer) leaf;
         javaLeaf.setConflictResolveConfig(yangPluginConfig.getConflictResolver());
         javaLeaf.updateJavaQualifiedInfo();
-                JavaAttributeInfo javaAttributeInfo = getAttributeInfoForTheData(
+        return getAttributeInfoForTheData(
                 javaLeaf.getJavaQualifiedInfo(),
                 javaLeaf.getJavaName(yangPluginConfig.getConflictResolver()),
                 javaLeaf.getDataType(),
                 getIsQualifiedAccessOrAddToImportList(javaLeaf.getJavaQualifiedInfo()),
                 false);
-                addJavaSnippetInfoToApplicableTempFiles(javaAttributeInfo, yangPluginConfig);
-            }
-        }
     }
 
     /**
@@ -1354,19 +1351,30 @@ public class TempJavaFragmentFiles {
                 if (!(leafList instanceof JavaLeafInfoContainer)) {
                     throw new TranslatorException("Leaf-list does not have java information");
                 }
+                addJavaSnippetInfoToApplicableTempFiles(getJavaAttributeOfLeafList(leafList, yangPluginConfig),
+                        yangPluginConfig);
+            }
+        }
+    }
+
+    /**
+     * Returns java attribute for leaf-list.
+     *
+     * @param leafList         YANG leaf-list
+     * @param yangPluginConfig plugin configurations
+     * @return java attribute for leaf-list
+     */
+    private JavaAttributeInfo getJavaAttributeOfLeafList(YangLeafList leafList, YangPluginConfig yangPluginConfig) {
         JavaLeafInfoContainer javaLeaf = (JavaLeafInfoContainer) leafList;
         javaLeaf.setConflictResolveConfig(yangPluginConfig.getConflictResolver());
         javaLeaf.updateJavaQualifiedInfo();
         getJavaImportData().setIfListImported(true);
-                JavaAttributeInfo javaAttributeInfo = getAttributeInfoForTheData(
+        return getAttributeInfoForTheData(
                 javaLeaf.getJavaQualifiedInfo(),
                 javaLeaf.getJavaName(yangPluginConfig.getConflictResolver()),
                 javaLeaf.getDataType(),
                 getIsQualifiedAccessOrAddToImportList(javaLeaf.getJavaQualifiedInfo()),
                 true);
-                addJavaSnippetInfoToApplicableTempFiles(javaAttributeInfo, yangPluginConfig);
-            }
-        }
     }
 
     /**
@@ -1455,6 +1463,15 @@ public class TempJavaFragmentFiles {
     }
 
     /**
+     * Returns java class name.
+     *
+     * @return java class name
+     */
+    String getImplClassName() {
+        return getCapitalCase(DEFAULT) + getCapitalCase(getJavaFileInfo().getJavaName());
+    }
+
+    /**
      * Returns the directory path.
      *
      * @return directory path
@@ -1475,6 +1492,8 @@ public class TempJavaFragmentFiles {
         List<String> imports = new ArrayList<>();
         imports = getJavaImportData().getImports();
 
+        JavaFileInfo curInfo = ((JavaFileInfoContainer) curNode).getJavaFileInfo();
+
         createPackage(curNode);
 
         /*
@@ -1505,50 +1524,50 @@ public class TempJavaFragmentFiles {
                 validateLineLength(getInterfaceJavaFileHandle());
             }
             insertDataIntoJavaFile(getInterfaceJavaFileHandle(), getJavaClassDefClose());
-            if (isAugmentationHolderExtended(getJavaExtendsListHolder().getExtendsList())) {
-                addAugmentationHoldersImport(curNode, imports, false);
-            }
-            if (isAugmentedInfoExtended(getJavaExtendsListHolder().getExtendsList())) {
-                addAugmentedInfoImport(curNode, imports, false);
-            }
+
             if (curNode instanceof YangCase) {
                 removeCaseImport(imports);
             }
+            if (curNode instanceof YangJavaAugment) {
+                updateAugmentConstructorTempFile(curNode, curInfo.getPluginConfig());
+                YangJavaAugment augment = (YangJavaAugment) curNode;
+                List<JavaQualifiedTypeInfo> infoList = augment.getExtendedClassInfo();
+                for (JavaQualifiedTypeInfo info : infoList) {
+                    if (info.getClassInfo()
+                            .equals(getCapitalCase(getCamelCase(augment.getAugmentedNode().getName(), null)))) {
+                        removeAugmentedImport(imports, info);
+                    }
+
+                }
+            }
         }
         if ((fileType & BUILDER_CLASS_MASK) != 0 || (fileType & IMPL_CLASS_MASK) != 0) {
             if (isAttributePresent()) {
                 addImportsToStringAndHasCodeMethods(curNode, imports);
             }
-            if (isAugmentationHolderExtended(getJavaExtendsListHolder().getExtendsList())) {
-                addAugmentedInfoImport(curNode, imports, true);
-                addArrayListImport(curNode, imports, true);
-            }
             sortImports(imports);
             /*
+             * Create impl class file.
+             */
+            setImplClassJavaFileHandle(getJavaFileHandle(getImplClassName()));
+            setImplClassJavaFileHandle(
+                    generateImplClassFile(getImplClassJavaFileHandle(), curNode, isAttributePresent(), imports));
+
+            /*
              * Create builder class file.
              */
+            if ((fileType & BUILDER_CLASS_MASK) != 0) {
                 setBuilderClassJavaFileHandle(getJavaFileHandle(getJavaClassName(BUILDER_CLASS_FILE_NAME_SUFFIX)));
                 setBuilderClassJavaFileHandle(
-                    generateBuilderClassFile(getBuilderClassJavaFileHandle(), imports, curNode,
+                        generateBuilderClassFile(getBuilderClassJavaFileHandle(), curNode,
                                 isAttributePresent()));
                 /*
-             * Create impl class file.
-             */
-            if ((fileType & IMPL_CLASS_MASK) != 0) {
-                setImplClassJavaFileHandle(getJavaFileHandle(getJavaClassName(IMPL_CLASS_FILE_NAME_SUFFIX)));
-                setImplClassJavaFileHandle(
-                        generateImplClassFile(getImplClassJavaFileHandle(), curNode, isAttributePresent()));
-                /*
                  * Append impl class to builder class and close it.
                  */
-                mergeJavaFiles(getImplClassJavaFileHandle(), getBuilderClassJavaFileHandle());
-                validateLineLength(getBuilderClassJavaFileHandle());
-            }
-            insertDataIntoJavaFile(getBuilderClassJavaFileHandle(), getJavaClassDefClose());
-            if (isAugmentationHolderExtended(getJavaExtendsListHolder().getExtendsList())) {
-                addAugmentedInfoImport(curNode, imports, false);
-                addArrayListImport(curNode, imports, false);
+                mergeJavaFiles(getBuilderClassJavaFileHandle(), getImplClassJavaFileHandle());
+                validateLineLength(getImplClassJavaFileHandle());
             }
+            insertDataIntoJavaFile(getImplClassJavaFileHandle(), getJavaClassDefClose());
         }
         /*
          * Close all the file handles.
@@ -1557,6 +1576,47 @@ public class TempJavaFragmentFiles {
     }
 
     /**
+     * Updates augment constructor temp file.
+     *
+     * @param curNode      current augment node
+     * @param pluginConfig plugin configurations
+     * @throws IOException when fails to do IO operations
+     */
+    private void updateAugmentConstructorTempFile(YangNode curNode, YangPluginConfig pluginConfig)
+            throws IOException {
+        YangJavaAugment augment = (YangJavaAugment) curNode;
+
+        YangNode augmentedNode = augment.getAugmentedNode();
+        if (augmentedNode instanceof YangLeavesHolder) {
+            YangLeavesHolder holder = (YangLeavesHolder) augmentedNode;
+            if (holder.getListOfLeaf() != null) {
+                for (YangLeaf leaf : holder.getListOfLeaf()) {
+                    addAugmentConstructor(getJavaAttributeOfLeaf(leaf,
+                            pluginConfig), pluginConfig);
+                }
+
+            }
+            if (holder.getListOfLeafList() != null) {
+                for (YangLeafList leafList : holder.getListOfLeafList()) {
+                    addAugmentConstructor(getJavaAttributeOfLeafList(leafList,
+                            pluginConfig), pluginConfig);
+                }
+
+            }
+        }
+        augmentedNode = augmentedNode.getChild();
+        boolean isList = false;
+        while (augmentedNode != null) {
+            if (augmentedNode instanceof YangList) {
+                isList = true;
+            }
+            addAugmentConstructor(getCurNodeAsAttributeInTarget(augmentedNode, augment, isList), pluginConfig);
+            augmentedNode = augmentedNode.getNextSibling();
+        }
+
+    }
+
+    /**
      * Adds imports for ToString and HashCodeMethod.
      *
      * @param curNode current YANG node
@@ -1570,6 +1630,27 @@ public class TempJavaFragmentFiles {
     }
 
     /**
+     * Removes augmented node import info from import list.
+     *
+     * @param imports list of imports
+     * @return import for class
+     */
+    private List<String> removeAugmentedImport(List<String> imports, JavaQualifiedTypeInfo augmentedInfo) {
+        String augmentedNodeImport = null;
+        if (imports != null && augmentedInfo != null) {
+            augmentedNodeImport = IMPORT + augmentedInfo.getPkgInfo() + PERIOD + getCapitalCase(DEFAULT)
+                    + augmentedInfo.getClassInfo() + PERIOD + augmentedInfo.getClassInfo()
+                    + BUILDER + SEMI_COLAN + NEW_LINE;
+            imports.remove(augmentedNodeImport);
+            augmentedNodeImport = IMPORT + augmentedInfo.getPkgInfo() + PERIOD
+                    + augmentedInfo.getClassInfo() + PERIOD + augmentedInfo.getClassInfo()
+                    + BUILDER + SEMI_COLAN + NEW_LINE;
+            imports.remove(augmentedNodeImport);
+        }
+        return imports;
+    }
+
+    /**
      * Removes case import info from import list.
      *
      * @param imports list of imports
@@ -1602,13 +1683,13 @@ public class TempJavaFragmentFiles {
             closeFile(getInterfaceJavaFileHandle(), isError);
         }
         if ((getGeneratedJavaFiles() & BUILDER_CLASS_MASK) != 0) {
-            closeFile(getBuilderClassJavaFileHandle(), isError);
+            closeFile(getBuilderClassJavaFileHandle(), true);
         }
         if ((getGeneratedJavaFiles() & BUILDER_INTERFACE_MASK) != 0) {
             closeFile(getBuilderInterfaceJavaFileHandle(), true);
         }
         if ((getGeneratedJavaFiles() & IMPL_CLASS_MASK) != 0) {
-            closeFile(getImplClassJavaFileHandle(), true);
+            closeFile(getImplClassJavaFileHandle(), isError);
         }
 
         /*
@@ -1632,6 +1713,9 @@ public class TempJavaFragmentFiles {
         if ((getGeneratedTempFiles() & FROM_STRING_IMPL_MASK) != 0) {
             closeFile(getFromStringImplTempFileHandle(), true);
         }
+        if ((getGeneratedTempFiles() & AUGMENTE_CLASS_CONSTRUCTOR_MASK) != 0) {
+            closeFile(getAugmentConstructorImplTempFileHandle(), true);
+        }
     }
 
     /**

@@ -27,7 +27,6 @@ import org.onosproject.yangutils.translator.tojava.javamodel.YangJavaModule;
 import org.onosproject.yangutils.translator.tojava.javamodel.YangJavaSubModule;
 import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
-import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_EVENT_CLASS;
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_EVENT_LISTENER_INTERFACE;
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_EVENT_SUBJECT_CLASS;
 import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.EVENT_ENUM_MASK;
@@ -54,9 +53,9 @@ import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getRpcManagerMethod;
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getRpcServiceMethod;
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getSetterForClass;
-import static org.onosproject.yangutils.translator.tojava.utils.TempJavaCodeFragmentFilesUtils.addAnnotationsImports;
-import static org.onosproject.yangutils.translator.tojava.utils.TempJavaCodeFragmentFilesUtils.addListnersImport;
-import static org.onosproject.yangutils.translator.tojava.utils.TempJavaCodeFragmentFilesUtils.closeFile;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaCodeSnippetGen.addAnnotationsImports;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaCodeSnippetGen.addListenersImport;
+import static org.onosproject.yangutils.utils.io.impl.FileSystemUtil.closeFile;
 import static org.onosproject.yangutils.utils.UtilConstants.COMMA;
 import static org.onosproject.yangutils.utils.UtilConstants.EMPTY_STRING;
 import static org.onosproject.yangutils.utils.UtilConstants.EVENT_STRING;
@@ -390,7 +389,7 @@ public class TempJavaServiceFragmentFiles
         }
 
         if (isNotification) {
-            addListnersImport(curNode, imports, true, LISTENER_SERVICE);
+            addListenersImport(curNode, imports, true, LISTENER_SERVICE);
         }
         /**
          * Creates rpc interface file.
@@ -399,8 +398,8 @@ public class TempJavaServiceFragmentFiles
         generateServiceInterfaceFile(getServiceInterfaceJavaFileHandle(), curNode, imports, isAttributePresent());
 
         if (isNotification) {
-            addListnersImport(curNode, imports, false, LISTENER_SERVICE);
-            addListnersImport(curNode, imports, true, LISTENER_REG);
+            addListenersImport(curNode, imports, false, LISTENER_SERVICE);
+            addListenersImport(curNode, imports, true, LISTENER_REG);
         }
         addAnnotationsImports(imports, true);
         /**
@@ -411,14 +410,14 @@ public class TempJavaServiceFragmentFiles
 
         insertDataIntoJavaFile(getManagerJavaFileHandle(), getJavaClassDefClose());
         if (isNotification) {
-            addListnersImport(curNode, imports, false, LISTENER_REG);
+            addListenersImport(curNode, imports, false, LISTENER_REG);
         }
         addAnnotationsImports(imports, false);
 
         if (isNotification) {
-            generateEventJavaFile(GENERATE_EVENT_CLASS, curNode);
+            generateEventJavaFile(curNode);
             generateEventListenerJavaFile(GENERATE_EVENT_LISTENER_INTERFACE, curNode);
-            generateEventSubjectJavaFile(GENERATE_EVENT_SUBJECT_CLASS, curNode);
+            generateEventSubjectJavaFile(curNode);
         }
 
         /**
@@ -478,11 +477,10 @@ public class TempJavaServiceFragmentFiles
     /**
      * Constructs java code exit.
      *
-     * @param fileType generated file type
      * @param curNode  current YANG node
      * @throws IOException when fails to generate java files
      */
-    public void generateEventJavaFile(int fileType, YangNode curNode)
+    public void generateEventJavaFile(YangNode curNode)
             throws IOException {
 
         List<String> imports = new ArrayList<>();
@@ -536,11 +534,10 @@ public class TempJavaServiceFragmentFiles
     /**
      * Constructs java code exit.
      *
-     * @param fileType generated file type
      * @param curNode  current YANG node
      * @throws IOException when fails to generate java files
      */
-    public void generateEventSubjectJavaFile(int fileType, YangNode curNode)
+    public void generateEventSubjectJavaFile(YangNode curNode)
             throws IOException {
 
         String curNodeInfo = getCapitalCase(((JavaFileInfoContainer) curNode)
@@ -778,7 +775,7 @@ public class TempJavaServiceFragmentFiles
     /**
      * Returns a temporary file handle for the event's file type.
      *
-     * @param fileName file name
+     * @param name file name
      * @return temporary file handle
      * @throws IOException when fails to create new file handle
      */
@@ -786,9 +783,10 @@ public class TempJavaServiceFragmentFiles
             throws IOException {
 
         JavaFileInfo parentInfo = ((JavaFileInfoContainer) curNode).getJavaFileInfo();
+        JavaFileInfo childInfo = ((JavaFileInfoContainer) curNode.getChild()).getJavaFileInfo();
 
         return getFileObject(getDirPath(parentInfo), name, JAVA_FILE_EXTENSION,
-                parentInfo);
+                childInfo);
     }
 
     /**

@@ -39,7 +39,7 @@ import static org.onosproject.yangutils.translator.tojava.utils.JavaFileGenerato
 import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCamelCase;
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getOfMethodStringAndJavaDoc;
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getTypeConstructorStringAndJavaDoc;
-import static org.onosproject.yangutils.translator.tojava.utils.TempJavaCodeFragmentFilesUtils.closeFile;
+import static org.onosproject.yangutils.utils.io.impl.FileSystemUtil.closeFile;
 import static org.onosproject.yangutils.utils.UtilConstants.EMPTY_STRING;
 import static org.onosproject.yangutils.utils.UtilConstants.NEW_LINE;
 import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.createPackage;

@@ -16,17 +16,22 @@
 package org.onosproject.yangutils.translator.tojava.javamodel;
 
 import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
 
 import org.onosproject.yangutils.datamodel.YangAugment;
+import org.onosproject.yangutils.datamodel.YangNodeIdentifier;
 import org.onosproject.yangutils.translator.exception.TranslatorException;
 import org.onosproject.yangutils.translator.tojava.JavaCodeGenerator;
 import org.onosproject.yangutils.translator.tojava.JavaCodeGeneratorInfo;
 import org.onosproject.yangutils.translator.tojava.JavaFileInfo;
+import org.onosproject.yangutils.translator.tojava.JavaQualifiedTypeInfo;
 import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFiles;
 import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_INTERFACE_WITH_BUILDER;
 import static org.onosproject.yangutils.translator.tojava.javamodel.YangJavaModelUtils.generateCodeOfAugmentableNode;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCapitalCase;
 
 /**
  * Represents augment information extended to support java code generation.
@@ -38,11 +43,21 @@ public class YangJavaAugment
     private static final long serialVersionUID = 806201632L;
 
     /**
+     * Prefix to be added to generated java file for augment node.
+     */
+    private static final String AUGMENTED = "Augmented";
+
+    /**
      * Contains the information of the java file being generated.
      */
     private JavaFileInfo javaFileInfo;
 
     /**
+     * TargetNodes java qualified info.
+     */
+    private List<JavaQualifiedTypeInfo> extendedClassInfo;
+
+    /**
      * File handle to maintain temporary java code fragments as per the code
      * snippet types.
      */
@@ -54,6 +69,7 @@ public class YangJavaAugment
     public YangJavaAugment() {
         super();
         setJavaFileInfo(new JavaFileInfo());
+        setExtendedClassInfo(new ArrayList<>());
         getJavaFileInfo().setGeneratedFileTypes(GENERATE_INTERFACE_WITH_BUILDER);
     }
 
@@ -130,4 +146,46 @@ public class YangJavaAugment
             throw new TranslatorException("Failed to generate code for augmentable node " + getName());
         }
     }
+
+    /**
+     * Returns augment class name.
+     *
+     * @return augment class name
+     */
+    public String getAugmentClassName() {
+        YangNodeIdentifier nodeId = getTargetNode().get(getTargetNode().size() - 1).getNodeIdentifier();
+        if (nodeId.getPrefix() != null) {
+            return AUGMENTED + getCapitalCase(nodeId.getPrefix()) + getCapitalCase(nodeId.getName());
+        } else {
+            return AUGMENTED + getCapitalCase(nodeId.getName());
+        }
+    }
+
+    /**
+     * Returns extended class info.
+     *
+     * @return extended class info
+     */
+    public List<JavaQualifiedTypeInfo> getExtendedClassInfo() {
+        return extendedClassInfo;
+    }
+
+    /**
+     * Sets extended class info.
+     *
+     * @param augmentedInfo  extended class info
+     */
+    private void setExtendedClassInfo(List<JavaQualifiedTypeInfo> augmentedInfo) {
+        extendedClassInfo = augmentedInfo;
+    }
+
+    /**
+     * Adds to extended class info list.
+     *
+     * @param augmentedInfo extended class info
+     */
+    public void addToExtendedClassInfo(JavaQualifiedTypeInfo augmentedInfo) {
+        getExtendedClassInfo().add(augmentedInfo);
+    }
+
 }

@@ -35,7 +35,7 @@ import static org.onosproject.yangutils.translator.tojava.javamodel.YangJavaMode
 import static org.onosproject.yangutils.translator.tojava.utils.JavaFileGeneratorUtils.getFileObject;
 import static org.onosproject.yangutils.translator.tojava.utils.JavaFileGeneratorUtils.initiateJavaFileGeneration;
 import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.createPackage;
-import static org.onosproject.yangutils.translator.tojava.utils.TempJavaCodeFragmentFilesUtils.closeFile;
+import static org.onosproject.yangutils.utils.io.impl.FileSystemUtil.closeFile;
 import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCapitalCase;
 
 /**

@@ -16,12 +16,18 @@
 
 package org.onosproject.yangutils.translator.tojava.javamodel;
 
+import java.io.File;
 import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
 import org.onosproject.yangutils.datamodel.RpcNotificationContainer;
 import org.onosproject.yangutils.datamodel.YangCase;
 import org.onosproject.yangutils.datamodel.YangChoice;
+import org.onosproject.yangutils.datamodel.YangGrouping;
 import org.onosproject.yangutils.datamodel.YangLeavesHolder;
 import org.onosproject.yangutils.datamodel.YangNode;
+import org.onosproject.yangutils.datamodel.YangTypeDef;
 import org.onosproject.yangutils.datamodel.YangTypeHolder;
 import org.onosproject.yangutils.datamodel.utils.DataModelUtils;
 import org.onosproject.yangutils.translator.exception.TranslatorException;
@@ -38,7 +44,12 @@ import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_EVENT_SUBJECT_CLASS;
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_SERVICE_AND_MANAGER;
 import static org.onosproject.yangutils.translator.tojava.TempJavaFragmentFiles.addCurNodeInfoInParentTempFile;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getRootPackage;
+import static org.onosproject.yangutils.utils.UtilConstants.BUILDER;
+import static org.onosproject.yangutils.utils.UtilConstants.DEFAULT;
+import static org.onosproject.yangutils.utils.UtilConstants.MANAGER;
 import static org.onosproject.yangutils.utils.UtilConstants.PERIOD;
+import static org.onosproject.yangutils.utils.UtilConstants.SERVICE;
 import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCamelCase;
 import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCapitalCase;
 import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getPackageDirPathFromJavaJPackage;
@@ -65,9 +76,14 @@ public final class YangJavaModelUtils {
                                          YangPluginConfig yangPluginConfig)
             throws IOException {
 
+        if (javaCodeGeneratorInfo instanceof YangJavaAugment) {
+            javaCodeGeneratorInfo.getJavaFileInfo()
+                    .setJavaName(((YangJavaAugment) javaCodeGeneratorInfo).getAugmentClassName());
+        } else {
             javaCodeGeneratorInfo.getJavaFileInfo()
                     .setJavaName(getCamelCase(((YangNode) javaCodeGeneratorInfo).getName(),
                             yangPluginConfig.getConflictResolver()));
+        }
         javaCodeGeneratorInfo.getJavaFileInfo().setPackage(getCurNodePackage((YangNode) javaCodeGeneratorInfo));
         javaCodeGeneratorInfo.getJavaFileInfo().setPackageFilePath(
                 getPackageDirPathFromJavaJPackage(javaCodeGeneratorInfo.getJavaFileInfo().getPackage()));
@@ -83,15 +99,14 @@ public final class YangJavaModelUtils {
      * @throws IOException IO operations fails
      */
     private static void updatePackageInfo(JavaCodeGeneratorInfo javaCodeGeneratorInfo, YangPluginConfig yangPlugin,
-            String pkg)
-            throws IOException {
+                                          String pkg) throws IOException {
         javaCodeGeneratorInfo.getJavaFileInfo()
                 .setJavaName(getCamelCase(((YangNode) javaCodeGeneratorInfo).getName(),
                         yangPlugin.getConflictResolver()));
         javaCodeGeneratorInfo.getJavaFileInfo().setPackage(pkg);
         javaCodeGeneratorInfo.getJavaFileInfo().setPackageFilePath(
                 getPackageDirPathFromJavaJPackage(javaCodeGeneratorInfo.getJavaFileInfo().getPackage()));
-        javaCodeGeneratorInfo.getJavaFileInfo().setBaseCodeGenPath(yangPlugin.getCodeGenDir());
+        javaCodeGeneratorInfo.getJavaFileInfo().setBaseCodeGenPath(yangPlugin.getManagerCodeGenDir());
         javaCodeGeneratorInfo.getJavaFileInfo().setPluginConfig(yangPlugin);
     }
 
@@ -253,26 +268,44 @@ public final class YangJavaModelUtils {
 
         generateCodeOfNode(javaCodeGeneratorInfo, yangPlugin);
 
-        /*
-        TODO: Need to use this, when augmentation is added in YMS
-         * For augmentation of nodes.
-
-        if (javaCodeGeneratorInfo instanceof YangAugmentationHolder) {
-            JavaQualifiedTypeInfo augmentationHoldersInfo = new JavaQualifiedTypeInfo();
-            augmentationHoldersInfo.setClassInfo(AUGMENTATION_HOLDER);
-            augmentationHoldersInfo.setPkgInfo(PROVIDED_AUGMENTATION_CLASS_IMPORT_PKG);
+        if (javaCodeGeneratorInfo instanceof YangJavaAugment) {
+            JavaQualifiedTypeInfo augmentedBuilderInfo = new JavaQualifiedTypeInfo();
+            JavaQualifiedTypeInfo augmentedBuilderClassInfo = new JavaQualifiedTypeInfo();
+            JavaQualifiedTypeInfo augmentedClassInfo = new JavaQualifiedTypeInfo();
+            JavaQualifiedTypeInfo augmentedImplInfo = new JavaQualifiedTypeInfo();
+            YangNode augmentedNode = ((YangJavaAugment) javaCodeGeneratorInfo).getAugmentedNode();
+            String name = null;
+            JavaFileInfo augmentedfileInfo = ((JavaFileInfoContainer) augmentedNode).getJavaFileInfo();
+            if (augmentedfileInfo.getJavaName() != null) {
+                name = getCapitalCase(augmentedfileInfo.getJavaName());
+                augmentedClassInfo.setClassInfo(name);
+                augmentedClassInfo.setPkgInfo(augmentedfileInfo.getPackage());
+            } else {
+                name = getCapitalCase(getCamelCase(augmentedNode.getName(), yangPlugin.getConflictResolver()));
+                augmentedClassInfo.setClassInfo(name);
+                augmentedClassInfo.setPkgInfo(getAugmentedNodesPackage(augmentedNode, yangPlugin));
+            }
+            augmentedBuilderInfo.setClassInfo(name + PERIOD + name + BUILDER);
+            augmentedBuilderInfo.setPkgInfo(augmentedClassInfo.getPkgInfo());
+            augmentedBuilderClassInfo.setClassInfo(getCapitalCase(DEFAULT) + name + PERIOD + name + BUILDER);
+            augmentedBuilderClassInfo.setPkgInfo(augmentedClassInfo.getPkgInfo());
+            augmentedImplInfo.setClassInfo(getCapitalCase(DEFAULT) + name);
+            augmentedImplInfo.setPkgInfo(augmentedBuilderInfo.getPkgInfo());
+            ((YangJavaAugment) javaCodeGeneratorInfo).addToExtendedClassInfo(augmentedBuilderInfo);
+            ((YangJavaAugment) javaCodeGeneratorInfo).addToExtendedClassInfo(augmentedImplInfo);
+            ((YangJavaAugment) javaCodeGeneratorInfo).addToExtendedClassInfo(augmentedBuilderClassInfo);
+            ((YangJavaAugment) javaCodeGeneratorInfo).addToExtendedClassInfo(augmentedClassInfo);
             javaCodeGeneratorInfo.getTempJavaCodeFragmentFiles().getBeanTempFiles().getJavaExtendsListHolder()
-                    .addToExtendsList(augmentationHoldersInfo, (YangNode) javaCodeGeneratorInfo);
-
-        } else if (javaCodeGeneratorInfo instanceof YangAugment) {
-            JavaQualifiedTypeInfo augmentedInfo = new JavaQualifiedTypeInfo();
-            augmentedInfo.setClassInfo(AUGMENTED_INFO);
-            augmentedInfo.setPkgInfo(PROVIDED_AUGMENTATION_CLASS_IMPORT_PKG);
+                    .addToExtendsList(augmentedClassInfo, (YangNode) javaCodeGeneratorInfo);
+            javaCodeGeneratorInfo.getTempJavaCodeFragmentFiles().getBeanTempFiles().getJavaExtendsListHolder()
+                    .addToExtendsList(augmentedBuilderInfo, (YangNode) javaCodeGeneratorInfo);
+            javaCodeGeneratorInfo.getTempJavaCodeFragmentFiles().getBeanTempFiles().getJavaExtendsListHolder()
+                    .addToExtendsList(augmentedImplInfo, (YangNode) javaCodeGeneratorInfo);
             javaCodeGeneratorInfo.getTempJavaCodeFragmentFiles().getBeanTempFiles().getJavaExtendsListHolder()
-                    .addToExtendsList(augmentedInfo, (YangNode) javaCodeGeneratorInfo);
+                    .addToExtendsList(augmentedBuilderClassInfo, (YangNode) javaCodeGeneratorInfo);
 
         }
-        */
+
         if (javaCodeGeneratorInfo instanceof YangCase) {
             YangNode parent = ((YangCase) javaCodeGeneratorInfo).getParent();
             JavaQualifiedTypeInfo parentsInfo = new JavaQualifiedTypeInfo();
@@ -289,6 +322,45 @@ public final class YangJavaModelUtils {
         }
     }
 
+    private static String getAugmentedNodesPackage(YangNode node, YangPluginConfig yangPluginConfig) {
+
+        List<String> clsInfo = new ArrayList<>();
+        node = node.getParent();
+        while (node != null) {
+            if (!(node instanceof YangJavaModule)
+                    || !(node instanceof YangJavaSubModule)) {
+                if (node instanceof YangJavaAugment) {
+                    clsInfo.add(((YangJavaAugment) node).getAugmentClassName());
+                } else {
+                    clsInfo.add(getCamelCase(node.getName(), yangPluginConfig.getConflictResolver()));
+                }
+            }
+            if (node instanceof YangJavaModule
+                    || node instanceof YangJavaSubModule) {
+                break;
+            }
+            node = node.getParent();
+        }
+
+        StringBuilder pkg = new StringBuilder();
+        if (node instanceof YangJavaModule) {
+            YangJavaModule module = (YangJavaModule) node;
+            pkg.append(getRootPackage(module.getVersion(), module.getNameSpace().getUri(), module
+                    .getRevision().getRevDate(), yangPluginConfig.getConflictResolver()));
+        } else if (node instanceof YangJavaSubModule) {
+            YangJavaSubModule submodule = (YangJavaSubModule) node;
+            pkg.append(getRootPackage(submodule.getVersion(),
+                    submodule.getNameSpaceFromModule(submodule.getBelongsTo()),
+                    submodule.getRevision().getRevDate(), yangPluginConfig.getConflictResolver()));
+        }
+        for (int i = 1; i <= clsInfo.size(); i++) {
+            pkg.append("." + clsInfo.get(clsInfo.size() - i));
+        }
+
+        return pkg.toString().toLowerCase();
+
+    }
+
     /**
      * Generates code for the current data model node.
      *
@@ -370,4 +442,44 @@ public final class YangJavaModelUtils {
         pkg = parentJavaFileHandle.getPackage() + PERIOD + parentJavaFileHandle.getJavaName();
         return pkg.toLowerCase();
     }
+
+    /**
+     * Returns true if root node contains any data node.
+     *
+     * @param node root YANG node
+     * @return true if root node contains any data node
+     */
+    public static boolean isManagerCodeGenRequired(YangNode node) {
+        YangLeavesHolder holder = (YangLeavesHolder) node;
+
+        if (holder.getListOfLeaf() != null && !holder.getListOfLeaf().isEmpty()) {
+            return true;
+        } else if (holder.getListOfLeafList() != null && !holder.getListOfLeafList().isEmpty()) {
+            return true;
+        }
+        node = node.getChild();
+        return node != null && !(node instanceof YangTypeDef) && !(node instanceof YangGrouping);
+    }
+
+    /**
+     * Return false if files are already present.
+     *
+     * @param info java file info
+     * @return false if files already present
+     */
+    public static boolean isGenerationOfCodeReq(JavaFileInfo info) {
+        File codeGenDir = new File(info.getBaseCodeGenPath()
+                + info.getPackageFilePath());
+        File[] files = codeGenDir.listFiles();
+        if (files.length >= 1) {
+            for (File file : files) {
+                if (file.getName().contentEquals(getCapitalCase(info.getJavaName() + MANAGER + ".java"))
+                        || file.getName().contentEquals(getCapitalCase(info.getJavaName() + SERVICE + ".java"))) {
+                    return false;
+                }
+            }
+        }
+        return true;
+    }
+
 }

@@ -33,8 +33,10 @@ import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_EVENT_LISTENER_INTERFACE;
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_EVENT_SUBJECT_CLASS;
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_SERVICE_AND_MANAGER;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getRootPackage;
 import static org.onosproject.yangutils.translator.tojava.javamodel.YangJavaModelUtils.generateCodeOfRootNode;
+import static org.onosproject.yangutils.translator.tojava.javamodel.YangJavaModelUtils.isManagerCodeGenRequired;
+import static org.onosproject.yangutils.translator.tojava.javamodel.YangJavaModelUtils.isGenerationOfCodeReq;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getRootPackage;
 import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.searchAndDeleteTempDir;
 
 /**
@@ -60,7 +62,7 @@ public class YangJavaModule
     /**
      * List of notifications nodes.
      */
-    private List<YangNode> notificationNodes;
+    private transient List<YangNode> notificationNodes;
 
     /**
      * Creates a YANG node of module type.
@@ -153,10 +155,15 @@ public class YangJavaModule
          *
          * The manager class needs to extend the "ListenerRegistry".
          */
+
         try {
+            if (isManagerCodeGenRequired(this) && isGenerationOfCodeReq(getJavaFileInfo())) {
                 getTempJavaCodeFragmentFiles().generateJavaFile(GENERATE_SERVICE_AND_MANAGER, this);
+            }
             searchAndDeleteTempDir(getJavaFileInfo().getBaseCodeGenPath() +
                     getJavaFileInfo().getPackageFilePath());
+            searchAndDeleteTempDir(getJavaFileInfo().getPluginConfig().getCodeGenDir() +
+                    getJavaFileInfo().getPackageFilePath());
         } catch (IOException e) {
             throw new TranslatorException("Failed to generate code for module node " + getName());
         }

@@ -35,8 +35,10 @@ import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_EVENT_LISTENER_INTERFACE;
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_EVENT_SUBJECT_CLASS;
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_SERVICE_AND_MANAGER;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getRootPackage;
 import static org.onosproject.yangutils.translator.tojava.javamodel.YangJavaModelUtils.generateCodeOfRootNode;
+import static org.onosproject.yangutils.translator.tojava.javamodel.YangJavaModelUtils.isManagerCodeGenRequired;
+import static org.onosproject.yangutils.translator.tojava.javamodel.YangJavaModelUtils.isGenerationOfCodeReq;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getRootPackage;
 import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.searchAndDeleteTempDir;
 
 /**
@@ -62,7 +64,7 @@ public class YangJavaSubModule
     /**
      * List of notifications nodes.
      */
-    private List<YangNode> notificationNodes = new ArrayList<>();
+    private transient List<YangNode> notificationNodes = new ArrayList<>();
 
     /**
      * Creates YANG java sub module object.
@@ -167,9 +169,13 @@ public class YangJavaSubModule
          * The manager class needs to extend the "ListenerRegistry".
          */
         try {
+            if (isManagerCodeGenRequired(this) && isGenerationOfCodeReq(getJavaFileInfo())) {
                 getTempJavaCodeFragmentFiles().generateJavaFile(GENERATE_SERVICE_AND_MANAGER, this);
+            }
             searchAndDeleteTempDir(getJavaFileInfo().getBaseCodeGenPath() +
                     getJavaFileInfo().getPackageFilePath());
+            searchAndDeleteTempDir(getJavaFileInfo().getPluginConfig().getCodeGenDir() +
+                    getJavaFileInfo().getPackageFilePath());
         } catch (IOException e) {
             throw new TranslatorException("Failed to generate code for submodule node " + getName());
         }

@@ -16,13 +16,15 @@
 
 package org.onosproject.yangutils.translator.tojava.utils;
 
+import org.onosproject.yangutils.datamodel.YangAugment;
 import org.onosproject.yangutils.datamodel.YangIdentity;
 import org.onosproject.yangutils.datamodel.YangNode;
 import org.onosproject.yangutils.datamodel.YangNotification;
 import org.onosproject.yangutils.translator.exception.TranslatorException;
+import org.onosproject.yangutils.translator.tojava.JavaFileInfo;
+import org.onosproject.yangutils.translator.tojava.JavaFileInfoContainer;
 import org.onosproject.yangutils.translator.tojava.JavaQualifiedTypeInfo;
 import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFilesContainer;
-import org.onosproject.yangutils.translator.tojava.javamodel.YangJavaIdentity;
 
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.BUILDER_CLASS_MASK;
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.BUILDER_INTERFACE_MASK;
@@ -36,9 +38,11 @@ import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_UNION_CLASS;
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.IMPL_CLASS_MASK;
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.INTERFACE_MASK;
+import static org.onosproject.yangutils.utils.UtilConstants.ABSTRACT;
 import static org.onosproject.yangutils.utils.UtilConstants.BUILDER;
 import static org.onosproject.yangutils.utils.UtilConstants.CLASS;
 import static org.onosproject.yangutils.utils.UtilConstants.COMMA;
+import static org.onosproject.yangutils.utils.UtilConstants.DEFAULT;
 import static org.onosproject.yangutils.utils.UtilConstants.DIAMOND_CLOSE_BRACKET;
 import static org.onosproject.yangutils.utils.UtilConstants.DIAMOND_OPEN_BRACKET;
 import static org.onosproject.yangutils.utils.UtilConstants.EIGHT_SPACE_INDENTATION;
@@ -47,7 +51,6 @@ import static org.onosproject.yangutils.utils.UtilConstants.EVENT_LISTENER_STRIN
 import static org.onosproject.yangutils.utils.UtilConstants.EVENT_STRING;
 import static org.onosproject.yangutils.utils.UtilConstants.EXTEND;
 import static org.onosproject.yangutils.utils.UtilConstants.FINAL;
-import static org.onosproject.yangutils.utils.UtilConstants.IMPL;
 import static org.onosproject.yangutils.utils.UtilConstants.IMPLEMENTS;
 import static org.onosproject.yangutils.utils.UtilConstants.INTERFACE;
 import static org.onosproject.yangutils.utils.UtilConstants.LISTENER_REG;
@@ -61,7 +64,6 @@ import static org.onosproject.yangutils.utils.UtilConstants.REGEX_FOR_ANY_STRING
 import static org.onosproject.yangutils.utils.UtilConstants.SERVICE;
 import static org.onosproject.yangutils.utils.UtilConstants.SPACE;
 import static org.onosproject.yangutils.utils.UtilConstants.SUBJECT;
-import static org.onosproject.yangutils.utils.UtilConstants.ABSTRACT;
 import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCapitalCase;
 import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.trimAtLast;
 
@@ -91,12 +93,6 @@ public final class ClassDefinitionGenerator {
          * class / interface definition start.
          */
         switch (genFileTypes) {
-            case BUILDER_CLASS_MASK:
-                return getBuilderClassDefinition(yangName);
-            case IMPL_CLASS_MASK:
-                return getImplClassDefinition(yangName);
-            case BUILDER_INTERFACE_MASK:
-                return getBuilderInterfaceDefinition(yangName);
             case GENERATE_TYPEDEF_CLASS:
             case GENERATE_UNION_CLASS:
                 return getTypeClassDefinition(yangName);
@@ -125,6 +121,12 @@ public final class ClassDefinitionGenerator {
         switch (genFileTypes) {
             case INTERFACE_MASK:
                 return getInterfaceDefinition(yangName, curNode);
+            case BUILDER_CLASS_MASK:
+                return getBuilderClassDefinition(yangName, curNode);
+            case IMPL_CLASS_MASK:
+                return getImplClassDefinition(yangName, curNode);
+            case BUILDER_INTERFACE_MASK:
+                return getBuilderInterfaceDefinition(yangName, curNode);
             case GENERATE_SERVICE_AND_MANAGER:
                 return getRpcInterfaceDefinition(yangName, curNode);
             case GENERATE_EVENT_CLASS:
@@ -158,22 +160,10 @@ public final class ClassDefinitionGenerator {
      * @return definition
      */
     private static String getInterfaceDefinition(String yangName, YangNode curNode) {
-        JavaExtendsListHolder holder = ((TempJavaCodeFragmentFilesContainer) curNode)
-                .getTempJavaCodeFragmentFiles().getBeanTempFiles().getJavaExtendsListHolder();
-
-        if (holder.getExtendsList() != null && !holder.getExtendsList().isEmpty()) {
-            String def = PUBLIC + SPACE + INTERFACE + SPACE + yangName + SPACE + EXTEND + SPACE;
-            for (JavaQualifiedTypeInfo info : holder.getExtendsList()) {
-                if (!holder.getExtendedClassStore().get(info)) {
-                    def = def + info.getClassInfo() + COMMA + SPACE;
-                } else {
-                    def = def + info.getPkgInfo() + PERIOD + info.getClassInfo() + COMMA + SPACE;
-                }
-            }
 
-            def = trimAtLast(def, COMMA);
-
-            return def + SPACE + OPEN_CURLY_BRACKET + NEW_LINE;
+        String clsDef = getClassDefinitionForWhenExtended(curNode, yangName, INTERFACE_MASK);
+        if (clsDef != null) {
+            return clsDef;
         }
         return PUBLIC + SPACE + INTERFACE + SPACE + yangName + SPACE + OPEN_CURLY_BRACKET + NEW_LINE;
     }
@@ -185,7 +175,14 @@ public final class ClassDefinitionGenerator {
      *                 is being generated
      * @return definition
      */
-    private static String getBuilderInterfaceDefinition(String yangName) {
+    private static String getBuilderInterfaceDefinition(String yangName, YangNode curNode) {
+        String clsDef = "";
+        if (curNode instanceof YangAugment) {
+            clsDef = getClassDefinitionForWhenExtended(curNode, yangName, BUILDER_INTERFACE_MASK);
+            if (clsDef != null) {
+                return clsDef;
+            }
+        }
         return INTERFACE + SPACE + yangName + BUILDER + SPACE + OPEN_CURLY_BRACKET + NEW_LINE + NEW_LINE;
     }
 
@@ -195,7 +192,14 @@ public final class ClassDefinitionGenerator {
      * @param yangName file name
      * @return definition
      */
-    private static String getBuilderClassDefinition(String yangName) {
+    private static String getBuilderClassDefinition(String yangName, YangNode curNode) {
+        String clsDef = "";
+        if (curNode instanceof YangAugment) {
+            clsDef = getClassDefinitionForWhenExtended(curNode, yangName, BUILDER_CLASS_MASK);
+            if (clsDef != null) {
+                return clsDef;
+            }
+        }
         return PUBLIC + SPACE + CLASS + SPACE + yangName + BUILDER + SPACE + IMPLEMENTS + SPACE + yangName + PERIOD
                 + yangName + BUILDER + SPACE + OPEN_CURLY_BRACKET + NEW_LINE;
     }
@@ -206,8 +210,15 @@ public final class ClassDefinitionGenerator {
      * @param yangName file name
      * @return definition
      */
-    private static String getImplClassDefinition(String yangName) {
-        return PUBLIC + SPACE + FINAL + SPACE + CLASS + SPACE + yangName + IMPL + SPACE + IMPLEMENTS + SPACE
+    private static String getImplClassDefinition(String yangName, YangNode curNode) {
+        String clsDef = "";
+        if (curNode instanceof YangAugment) {
+            clsDef = getClassDefinitionForWhenExtended(curNode, yangName, IMPL_CLASS_MASK);
+            if (clsDef != null) {
+                return clsDef;
+            }
+        }
+        return PUBLIC + SPACE + CLASS + SPACE + getCapitalCase(DEFAULT) + yangName + SPACE + IMPLEMENTS + SPACE
                 + yangName + SPACE + OPEN_CURLY_BRACKET + NEW_LINE;
     }
 
@@ -228,19 +239,19 @@ public final class ClassDefinitionGenerator {
      * @return identity class definition
      */
     private static String getIdentityClassDefinition(String yangName, YangNode curNode) {
-        if (!(curNode instanceof YangJavaIdentity)) {
+        if (!(curNode instanceof YangIdentity)) {
             throw new TranslatorException("Expected java identity instance node");
         }
-        YangJavaIdentity identity = (YangJavaIdentity) curNode;
+        YangIdentity identity = (YangIdentity) curNode;
         if (identity.getBaseNode() != null) {
             YangIdentity baseIdentity = identity.getBaseNode().getReferredIdentity();
-            if (!(baseIdentity instanceof YangJavaIdentity)) {
+            if (!(baseIdentity instanceof YangIdentity)) {
                 throw new TranslatorException("Expected java identity instance node");
             }
 
-            YangJavaIdentity baseJavaIdentity = (YangJavaIdentity) baseIdentity;
+            JavaFileInfo fileInfo = ((JavaFileInfoContainer) baseIdentity).getJavaFileInfo();
             return PUBLIC + SPACE + ABSTRACT + SPACE + CLASS + SPACE + yangName + SPACE + EXTEND + SPACE
-                    + getCapitalCase(baseJavaIdentity.getJavaFileInfo().getJavaName()) + SPACE +
+                    + getCapitalCase(fileInfo.getJavaName()) + SPACE +
                     OPEN_CURLY_BRACKET + NEW_LINE;
         }
 
@@ -332,4 +343,99 @@ public final class ClassDefinitionGenerator {
 
         return intfDef;
     }
+
+    /**
+     * Returns class definition when class is extending another class.
+     *
+     * @param curNode      current node
+     * @param yangName     name
+     * @param genFileTypes gen file type
+     * @return class definition
+     */
+    private static String getClassDefinitionForWhenExtended(YangNode curNode, String yangName, int genFileTypes) {
+        JavaExtendsListHolder holder = ((TempJavaCodeFragmentFilesContainer) curNode)
+                .getTempJavaCodeFragmentFiles().getBeanTempFiles().getJavaExtendsListHolder();
+
+        if (holder.getExtendsList() != null && !holder.getExtendsList().isEmpty()) {
+            String def = PUBLIC + SPACE;
+            switch (genFileTypes) {
+                case INTERFACE_MASK:
+                    def = def + INTERFACE + SPACE + yangName + SPACE + EXTEND + SPACE;
+                    for (JavaQualifiedTypeInfo info : holder.getExtendsList()) {
+                        if (curNode instanceof YangAugment) {
+                            if (!info.getClassInfo().contains(BUILDER) && !info.getClassInfo().contains(
+                                    getCapitalCase(DEFAULT))) {
+                                def = getDefinitionString(def, info, holder);
+                            }
+                        } else {
+                            def = getDefinitionString(def, info, holder);
+                        }
+                    }
+                    def = trimAtLast(def, COMMA);
+
+                    return def + SPACE + OPEN_CURLY_BRACKET + NEW_LINE;
+                case BUILDER_INTERFACE_MASK:
+                    String builderDef = INTERFACE + SPACE + yangName + BUILDER + SPACE + EXTEND + SPACE;
+                    for (JavaQualifiedTypeInfo info : holder.getExtendsList()) {
+                        if (info.getClassInfo().contains(BUILDER) && !info.getClassInfo().contains(
+                                getCapitalCase(DEFAULT))) {
+                            builderDef = getDefinitionString(builderDef, info, holder);
+                        }
+                    }
+
+                    builderDef = trimAtLast(builderDef, COMMA);
+
+                    return builderDef + SPACE + OPEN_CURLY_BRACKET + NEW_LINE;
+                case BUILDER_CLASS_MASK:
+                    def = def + CLASS + SPACE + yangName + BUILDER + SPACE + EXTEND + SPACE;
+                    for (JavaQualifiedTypeInfo info : holder.getExtendsList()) {
+                        if (info.getClassInfo().contains(BUILDER)
+                                && info.getClassInfo().contains(getCapitalCase(DEFAULT))) {
+                            def = getDefinitionString(def, info, holder);
+                        }
+                    }
+
+                    def = trimAtLast(def, COMMA);
+
+                    return def + SPACE + IMPLEMENTS + SPACE + yangName + PERIOD
+                            + yangName + BUILDER + SPACE + OPEN_CURLY_BRACKET + NEW_LINE;
+
+                case IMPL_CLASS_MASK:
+                    def = def + SPACE + CLASS + SPACE + getCapitalCase(DEFAULT) + yangName + SPACE + EXTEND + SPACE;
+                    for (JavaQualifiedTypeInfo info : holder.getExtendsList()) {
+                        if (!info.getClassInfo().contains(BUILDER)
+                                && info.getClassInfo().contains(getCapitalCase(DEFAULT))) {
+                            def = getDefinitionString(def, info, holder);
+                        }
+                    }
+
+                    def = trimAtLast(def, COMMA);
+
+                    return def + SPACE + IMPLEMENTS + SPACE
+                            + yangName + SPACE + OPEN_CURLY_BRACKET + NEW_LINE;
+
+                default:
+                    return null;
+            }
+        }
+        return null;
+    }
+
+    /**
+     * Returns updated class definition.
+     *
+     * @param def    current definition
+     * @param info   java qualified info
+     * @param holder extend list holder
+     * @return updated class definition
+     */
+    private static String getDefinitionString(String def, JavaQualifiedTypeInfo info, JavaExtendsListHolder holder) {
+        if (!holder.getExtendedClassStore().get(info)) {
+            def = def + info.getClassInfo() + COMMA + SPACE;
+        } else {
+            def = def + info.getPkgInfo() + PERIOD + info.getClassInfo() + COMMA + SPACE;
+        }
+        return def;
+    }
+
 }

@@ -16,31 +16,51 @@
 
 package org.onosproject.yangutils.translator.tojava.utils;
 
+import java.util.List;
+
+import org.onosproject.yangutils.datamodel.YangNode;
 import org.onosproject.yangutils.translator.tojava.JavaQualifiedTypeInfo;
+import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFiles;
+import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFilesContainer;
+import org.onosproject.yangutils.translator.tojava.TempJavaFragmentFiles;
 import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getEnumJavaAttribute;
-import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getSmallCase;
-import static org.onosproject.yangutils.utils.UtilConstants.ARRAY_LIST;
-import static org.onosproject.yangutils.utils.UtilConstants.AUGMENTED_INFO;
+import static org.onosproject.yangutils.utils.UtilConstants.ACTIVATE_ANNOTATION_IMPORT;
 import static org.onosproject.yangutils.utils.UtilConstants.CLOSE_CURLY_BRACKET;
 import static org.onosproject.yangutils.utils.UtilConstants.CLOSE_PARENTHESIS;
 import static org.onosproject.yangutils.utils.UtilConstants.COMMA;
+import static org.onosproject.yangutils.utils.UtilConstants.COMPONENT_ANNOTATION;
+import static org.onosproject.yangutils.utils.UtilConstants.COMPONENT_ANNOTATION_IMPORT;
+import static org.onosproject.yangutils.utils.UtilConstants.DEACTIVATE_ANNOTATION_IMPORT;
 import static org.onosproject.yangutils.utils.UtilConstants.DIAMOND_CLOSE_BRACKET;
 import static org.onosproject.yangutils.utils.UtilConstants.DIAMOND_OPEN_BRACKET;
+import static org.onosproject.yangutils.utils.UtilConstants.ENUM;
 import static org.onosproject.yangutils.utils.UtilConstants.EQUAL;
 import static org.onosproject.yangutils.utils.UtilConstants.FOUR_SPACE_INDENTATION;
+import static org.onosproject.yangutils.utils.UtilConstants.IMMEDIATE;
 import static org.onosproject.yangutils.utils.UtilConstants.IMPORT;
+import static org.onosproject.yangutils.utils.UtilConstants.INT;
 import static org.onosproject.yangutils.utils.UtilConstants.LIST;
-import static org.onosproject.yangutils.utils.UtilConstants.NEW;
+import static org.onosproject.yangutils.utils.UtilConstants.LISTENER_SERVICE;
+import static org.onosproject.yangutils.utils.UtilConstants.LOGGER_FACTORY_IMPORT;
+import static org.onosproject.yangutils.utils.UtilConstants.LOGGER_IMPORT;
 import static org.onosproject.yangutils.utils.UtilConstants.NEW_LINE;
+import static org.onosproject.yangutils.utils.UtilConstants.OPEN_CURLY_BRACKET;
 import static org.onosproject.yangutils.utils.UtilConstants.OPEN_PARENTHESIS;
 import static org.onosproject.yangutils.utils.UtilConstants.PERIOD;
 import static org.onosproject.yangutils.utils.UtilConstants.PRIVATE;
+import static org.onosproject.yangutils.utils.UtilConstants.PUBLIC;
 import static org.onosproject.yangutils.utils.UtilConstants.SEMI_COLAN;
+import static org.onosproject.yangutils.utils.UtilConstants.SERVICE_ANNOTATION;
+import static org.onosproject.yangutils.utils.UtilConstants.SERVICE_ANNOTATION_IMPORT;
 import static org.onosproject.yangutils.utils.UtilConstants.SPACE;
-import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.getJavaDoc;
+import static org.onosproject.yangutils.utils.UtilConstants.TRUE;
+import static org.onosproject.yangutils.utils.UtilConstants.TYPE;
 import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.JavaDocType.ENUM_ATTRIBUTE;
+import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.getJavaDoc;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getSmallCase;
+import static java.util.Collections.sort;
 
 /**
  * Represents utility class to generate the java snippet.
@@ -121,17 +141,6 @@ public final class JavaCodeSnippetGen {
     }
 
     /**
-     * Returns attribute of augmented info for generated impl file.
-     *
-     * @return attribute of augmented info for generated impl file
-     */
-    public static String getAugmentedInfoAttribute() {
-        return NEW_LINE + FOUR_SPACE_INDENTATION + PRIVATE + SPACE + getListAttribute(AUGMENTED_INFO) + SPACE
-                + getSmallCase(AUGMENTED_INFO) + LIST + SPACE + EQUAL + SPACE + NEW + SPACE + ARRAY_LIST
-                + DIAMOND_OPEN_BRACKET + DIAMOND_CLOSE_BRACKET + OPEN_PARENTHESIS + CLOSE_PARENTHESIS + SEMI_COLAN;
-    }
-
-    /**
      * Returns based on the file type and the YANG name of the file, generate the class
      * / interface definition close.
      *
@@ -155,4 +164,128 @@ public final class JavaCodeSnippetGen {
                 + value + CLOSE_PARENTHESIS + COMMA + NEW_LINE;
     }
 
+    /**
+     * Adds annotations imports.
+     *
+     * @param imports   list if imports
+     * @param operation to add or to delete
+     */
+    public static void addAnnotationsImports(List<String> imports, boolean operation) {
+        if (operation) {
+            imports.add(ACTIVATE_ANNOTATION_IMPORT);
+            imports.add(DEACTIVATE_ANNOTATION_IMPORT);
+            imports.add(COMPONENT_ANNOTATION_IMPORT);
+            imports.add(SERVICE_ANNOTATION_IMPORT);
+            imports.add(LOGGER_FACTORY_IMPORT);
+            imports.add(LOGGER_IMPORT);
+        } else {
+            imports.remove(ACTIVATE_ANNOTATION_IMPORT);
+            imports.remove(DEACTIVATE_ANNOTATION_IMPORT);
+            imports.remove(COMPONENT_ANNOTATION_IMPORT);
+            imports.remove(SERVICE_ANNOTATION_IMPORT);
+            imports.remove(LOGGER_FACTORY_IMPORT);
+            imports.remove(LOGGER_IMPORT);
+        }
+        sortImports(imports);
+    }
+
+    /**
+     * Returns sorted import list.
+     *
+     * @param imports import list
+     * @return sorted import list
+     */
+    public static List<String> sortImports(List<String> imports) {
+        sort(imports);
+        return imports;
+    }
+
+    /**
+     * Returns event enum start.
+     *
+     * @return event enum start
+     */
+    public static String getEventEnumTypeStart() {
+        return FOUR_SPACE_INDENTATION + PUBLIC + SPACE + ENUM + SPACE + TYPE + SPACE + OPEN_CURLY_BRACKET
+                + NEW_LINE;
+    }
+
+    /**
+     * Adds listener's imports.
+     *
+     * @param curNode   currentYangNode.
+     * @param imports   import list
+     * @param operation add or remove
+     * @param classInfo class info to be added to import list
+     */
+    public static void addListenersImport(YangNode curNode, List<String> imports, boolean operation,
+                                          String classInfo) {
+        String thisImport = "";
+        if (classInfo.equals(LISTENER_SERVICE)) {
+            thisImport = getTempJavaFragment(curNode).getJavaImportData().getListenerServiceImport();
+            performOperationOnImports(imports, thisImport, operation);
+        } else {
+            thisImport = getTempJavaFragment(curNode).getJavaImportData().getListenerRegistryImport();
+            performOperationOnImports(imports, thisImport, operation);
+        }
+    }
+
+    /**
+     * Performs given operations on import list.
+     *
+     * @param imports   list of imports
+     * @param curImport current import
+     * @param operation add or remove
+     * @return import list
+     */
+    private static List<String> performOperationOnImports(List<String> imports, String curImport,
+                                                          boolean operation) {
+        if (operation) {
+            imports.add(curImport);
+        } else {
+            imports.remove(curImport);
+        }
+        sortImports(imports);
+        return imports;
+    }
+
+    /**
+     * Returns temp java fragment.
+     *
+     * @param curNode current YANG node
+     * @return temp java fragments
+     */
+    public static TempJavaFragmentFiles getTempJavaFragment(YangNode curNode) {
+        TempJavaCodeFragmentFiles container = ((TempJavaCodeFragmentFilesContainer) curNode)
+                .getTempJavaCodeFragmentFiles();
+        if (container.getBeanTempFiles() != null) {
+            return container.getBeanTempFiles();
+        }
+        if (container.getServiceTempFiles() != null) {
+            return container.getServiceTempFiles();
+        }
+
+        return null;
+    }
+
+    /**
+     * Returns integer attribute for enum's class to get the values.
+     *
+     * @param className enum's class name
+     * @return enum's attribute
+     */
+    public static String getEnumsValueAttribute(String className) {
+        return NEW_LINE + FOUR_SPACE_INDENTATION + PRIVATE + SPACE + INT + SPACE + getSmallCase(className)
+                + SEMI_COLAN + NEW_LINE;
+    }
+
+    /**
+     * Returns component string.
+     *
+     * @return component string
+     */
+    public static String addComponentString() {
+        return NEW_LINE + COMPONENT_ANNOTATION + SPACE + OPEN_PARENTHESIS + IMMEDIATE + SPACE
+                + EQUAL + SPACE + TRUE + CLOSE_PARENTHESIS + NEW_LINE + SERVICE_ANNOTATION;
+    }
 }

@@ -28,7 +28,7 @@ import org.onosproject.yangutils.translator.tojava.JavaImportData;
 import org.onosproject.yangutils.translator.tojava.JavaQualifiedTypeInfo;
 
 import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCapitalCase;
-import static org.onosproject.yangutils.translator.tojava.utils.TempJavaCodeFragmentFilesUtils.getTempJavaFragement;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaCodeSnippetGen.getTempJavaFragment;
 
 /**
  * Represent the extends list for generated java classes. It holds the class details which needs
@@ -62,7 +62,7 @@ public class JavaExtendsListHolder {
      * @param extendedClass map of classes need to be extended
      */
     private void setExtendedClassStore(Map<JavaQualifiedTypeInfo, Boolean> extendedClass) {
-        this.extendedClassStore = extendedClass;
+        extendedClassStore = extendedClass;
     }
 
     /**
@@ -74,7 +74,7 @@ public class JavaExtendsListHolder {
     public void addToExtendsList(JavaQualifiedTypeInfo info, YangNode node) {
         JavaFileInfo fileInfo = ((JavaFileInfoContainer) node).getJavaFileInfo();
 
-        JavaImportData importData = getTempJavaFragement(node).getJavaImportData();
+        JavaImportData importData = getTempJavaFragment(node).getJavaImportData();
         boolean qualified = importData.addImportInfo(info,
                 getCapitalCase(fileInfo.getJavaName()), fileInfo.getPackage());
 
@@ -99,7 +99,7 @@ public class JavaExtendsListHolder {
      * @param classInfoList the extends List to set
      */
     private void setExtendsList(List<JavaQualifiedTypeInfo> classInfoList) {
-        this.extendsList = classInfoList;
+        extendsList = classInfoList;
     }
 
     /**

@@ -21,14 +21,14 @@ import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;
 
+import org.onosproject.yangutils.datamodel.YangAugment;
 import org.onosproject.yangutils.datamodel.YangNode;
+import org.onosproject.yangutils.translator.tojava.JavaCodeGeneratorInfo;
 import org.onosproject.yangutils.translator.tojava.JavaFileInfo;
 import org.onosproject.yangutils.translator.tojava.JavaFileInfoContainer;
-import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFiles;
 import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFilesContainer;
 import org.onosproject.yangutils.translator.tojava.TempJavaEnumerationFragmentFiles;
 import org.onosproject.yangutils.translator.tojava.TempJavaServiceFragmentFiles;
-import org.onosproject.yangutils.translator.tojava.JavaCodeGeneratorInfo;
 import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.BUILDER_CLASS_MASK;
@@ -43,6 +43,7 @@ import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.IMPL_CLASS_MASK;
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.INTERFACE_MASK;
 import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.ATTRIBUTES_MASK;
+import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.AUGMENTE_CLASS_CONSTRUCTOR_MASK;
 import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.CONSTRUCTOR_FOR_TYPE_MASK;
 import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.CONSTRUCTOR_IMPL_MASK;
 import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.ENUM_IMPL_MASK;
@@ -62,17 +63,14 @@ import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.
 import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.SETTER_FOR_CLASS_MASK;
 import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.SETTER_FOR_INTERFACE_MASK;
 import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.TO_STRING_IMPL_MASK;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaCodeSnippetGen.getAugmentedInfoAttribute;
 import static org.onosproject.yangutils.translator.tojava.utils.JavaFileGeneratorUtils.getDataFromTempFileHandle;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaFileGeneratorUtils.getEnumsValueAttribute;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaCodeSnippetGen.getEnumsValueAttribute;
 import static org.onosproject.yangutils.translator.tojava.utils.JavaFileGeneratorUtils.initiateJavaFileGeneration;
-import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCapitalCase;
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.addActivateMethod;
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.addDeActivateMethod;
-import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getAddAugmentInfoMethodImpl;
-import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getAugmentInfoListImpl;
+import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getAugmentedNodesConstructorStart;
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getConstructorStart;
-import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getEnumsConstrcutor;
+import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getEnumsConstructor;
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getEnumsOfMethod;
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getEqualsMethodClose;
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getEqualsMethodOpen;
@@ -82,31 +80,36 @@ import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getHashCodeMethodClose;
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getHashCodeMethodOpen;
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getOmitNullValueString;
-import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getRemoveAugmentationImpl;
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getToStringMethodClose;
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getToStringMethodOpen;
-import static org.onosproject.yangutils.translator.tojava.utils.TempJavaCodeFragmentFilesUtils.getEventEnumTypeStart;
-import static org.onosproject.yangutils.translator.tojava.utils.TempJavaCodeFragmentFilesUtils.isAugmentationHolderExtended;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaCodeSnippetGen.getEventEnumTypeStart;
 import static org.onosproject.yangutils.utils.UtilConstants.BUILDER;
 import static org.onosproject.yangutils.utils.UtilConstants.CLOSE_CURLY_BRACKET;
+import static org.onosproject.yangutils.utils.UtilConstants.CLOSE_PARENTHESIS;
 import static org.onosproject.yangutils.utils.UtilConstants.COMMA;
+import static org.onosproject.yangutils.utils.UtilConstants.DEFAULT;
+import static org.onosproject.yangutils.utils.UtilConstants.EIGHT_SPACE_INDENTATION;
 import static org.onosproject.yangutils.utils.UtilConstants.EMPTY_STRING;
 import static org.onosproject.yangutils.utils.UtilConstants.EVENT_LISTENER_STRING;
 import static org.onosproject.yangutils.utils.UtilConstants.EVENT_STRING;
 import static org.onosproject.yangutils.utils.UtilConstants.EVENT_SUBJECT_NAME_SUFFIX;
 import static org.onosproject.yangutils.utils.UtilConstants.FOUR_SPACE_INDENTATION;
-import static org.onosproject.yangutils.utils.UtilConstants.IMPL;
 import static org.onosproject.yangutils.utils.UtilConstants.INT;
 import static org.onosproject.yangutils.utils.UtilConstants.LOGGER_STATEMENT;
 import static org.onosproject.yangutils.utils.UtilConstants.MANAGER;
 import static org.onosproject.yangutils.utils.UtilConstants.NEW_LINE;
+import static org.onosproject.yangutils.utils.UtilConstants.OBJECT;
+import static org.onosproject.yangutils.utils.UtilConstants.OPEN_PARENTHESIS;
 import static org.onosproject.yangutils.utils.UtilConstants.PRIVATE;
 import static org.onosproject.yangutils.utils.UtilConstants.PUBLIC;
 import static org.onosproject.yangutils.utils.UtilConstants.SEMI_COLAN;
 import static org.onosproject.yangutils.utils.UtilConstants.SERVICE_METHOD_STRING;
-import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.getJavaDoc;
+import static org.onosproject.yangutils.utils.UtilConstants.SUPER;
 import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.JavaDocType.GETTER_METHOD;
 import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.JavaDocType.TYPE_CONSTRUCTOR;
+import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.getJavaDoc;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCamelCase;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCapitalCase;
 import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.insertDataIntoJavaFile;
 import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.trimAtLast;
 import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.validateLineLength;
@@ -134,6 +137,7 @@ public final class JavaFileGenerator {
             throws IOException {
 
         JavaFileInfo javaFileInfo = ((JavaFileInfoContainer) curNode).getJavaFileInfo();
+        String path = javaFileInfo.getBaseCodeGenPath() + javaFileInfo.getPackageFilePath();
 
         String className = getCapitalCase(javaFileInfo.getJavaName());
 
@@ -149,7 +153,7 @@ public final class JavaFileGenerator {
                  */
                 insertDataIntoJavaFile(file, getDataFromTempFileHandle(GETTER_FOR_INTERFACE_MASK,
                         ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles()
-                                .getBeanTempFiles()));
+                                .getBeanTempFiles(), path));
             } catch (IOException e) {
                 throw new IOException("No data found in temporary java code fragment files for " + className
                         + " while interface file generation");
@@ -176,7 +180,7 @@ public final class JavaFileGenerator {
         String className = getCapitalCase(javaFileInfo.getJavaName());
         String path = javaFileInfo.getBaseCodeGenPath() + javaFileInfo.getPackageFilePath();
 
-        initiateJavaFileGeneration(file, className, BUILDER_INTERFACE_MASK, null, path, pluginConfig);
+        initiateJavaFileGeneration(file, BUILDER_INTERFACE_MASK, null, curNode, className);
         List<String> methods = new ArrayList<>();
         if (isAttrPresent) {
             try {
@@ -185,14 +189,14 @@ public final class JavaFileGenerator {
                  */
                 methods.add(FOUR_SPACE_INDENTATION + getDataFromTempFileHandle(GETTER_FOR_INTERFACE_MASK,
                         ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles()
-                                .getBeanTempFiles()));
+                                .getBeanTempFiles(), path));
                 /**
                  * Setter methods.
                  */
                 methods.add(NEW_LINE);
                 methods.add(FOUR_SPACE_INDENTATION + getDataFromTempFileHandle(SETTER_FOR_INTERFACE_MASK,
                         ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles()
-                                .getBeanTempFiles()));
+                                .getBeanTempFiles(), path));
             } catch (IOException e) {
                 throw new IOException("No data found in temporary java code fragment files for " + className
                         + " while builder interface file generation");
@@ -220,15 +224,13 @@ public final class JavaFileGenerator {
      * Returns generated builder class file for current node.
      *
      * @param file          file
-     * @param imports imports for the file
      * @param curNode       current YANG node
      * @param isAttrPresent if any attribute is present or not
      * @return builder class file
      * @throws IOException when fails to write in file
      */
-    public static File generateBuilderClassFile(File file, List<String> imports, YangNode curNode,
-            boolean isAttrPresent)
-            throws IOException {
+    public static File generateBuilderClassFile(File file, YangNode curNode,
+                                                boolean isAttrPresent) throws IOException {
 
         JavaFileInfo javaFileInfo = ((JavaFileInfoContainer) curNode).getJavaFileInfo();
         YangPluginConfig pluginConfig = javaFileInfo.getPluginConfig();
@@ -236,9 +238,12 @@ public final class JavaFileGenerator {
         String className = getCapitalCase(javaFileInfo.getJavaName());
         String path = javaFileInfo.getBaseCodeGenPath() + javaFileInfo.getPackageFilePath();
 
-        initiateJavaFileGeneration(file, className, BUILDER_CLASS_MASK, imports, path, pluginConfig);
-
+        initiateJavaFileGeneration(file, BUILDER_CLASS_MASK, null, curNode, className);
         List<String> methods = new ArrayList<>();
+        boolean isAugmentNode = false;
+        if (curNode instanceof YangAugment) {
+            isAugmentNode = true;
+        }
 
         if (isAttrPresent) {
             /**
@@ -248,7 +253,7 @@ public final class JavaFileGenerator {
                 insertDataIntoJavaFile(file,
                         NEW_LINE + FOUR_SPACE_INDENTATION + getDataFromTempFileHandle(ATTRIBUTES_MASK,
                                 ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles()
-                                        .getBeanTempFiles()));
+                                        .getBeanTempFiles(), path));
             } catch (IOException e) {
                 throw new IOException("No data found in temporary java code fragment files for " + className
                         + " while builder class file generation");
@@ -260,14 +265,30 @@ public final class JavaFileGenerator {
                  */
                 methods.add(getDataFromTempFileHandle(GETTER_FOR_CLASS_MASK,
                         ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles()
-                                .getBeanTempFiles()));
+                                .getBeanTempFiles(), path));
                 /**
                  * Setter methods.
                  */
                 methods.add(getDataFromTempFileHandle(SETTER_FOR_CLASS_MASK,
                         ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles()
-                                .getBeanTempFiles()) +
-                        NEW_LINE);
+                                .getBeanTempFiles(), path));
+
+                if (isAugmentNode) {
+                    YangAugment augment = (YangAugment) curNode;
+                    String augmentNode = getCapitalCase(
+                            getCamelCase(augment.getAugmentedNode().getName(), pluginConfig.getConflictResolver()));
+                    /**
+                     * Constructor.
+                     */
+                    String constructor = getAugmentedNodesConstructorStart(className, augmentNode)
+                            + getDataFromTempFileHandle(AUGMENTE_CLASS_CONSTRUCTOR_MASK,
+                            ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles()
+                                    .getBeanTempFiles(), path);
+
+                    methods.add(constructor + FOUR_SPACE_INDENTATION + CLOSE_CURLY_BRACKET +
+                            NEW_LINE + NEW_LINE);
+                }
+                insertDataIntoJavaFile(file, NEW_LINE);
             } catch (IOException e) {
                 throw new IOException("No data found in temporary java code fragment files for " + className
                         + " while builder class file generation");
@@ -289,6 +310,7 @@ public final class JavaFileGenerator {
         for (String method : methods) {
             insertDataIntoJavaFile(file, method);
         }
+        insertDataIntoJavaFile(file, CLOSE_CURLY_BRACKET);
         return validateLineLength(file);
     }
 
@@ -309,6 +331,7 @@ public final class JavaFileGenerator {
         JavaFileInfo javaFileInfo = ((JavaFileInfoContainer) curNode).getJavaFileInfo();
 
         String className = getCapitalCase(javaFileInfo.getJavaName()) + MANAGER;
+        String path = javaFileInfo.getBaseCodeGenPath() + javaFileInfo.getPackageFilePath();
 
         initiateJavaFileGeneration(file, GENERATE_SERVICE_AND_MANAGER, imports, curNode, className);
 
@@ -326,14 +349,14 @@ public final class JavaFileGenerator {
                 methods.add(
                         getDataFromTempFileHandle(GETTER_FOR_CLASS_MASK,
                                 ((TempJavaCodeFragmentFilesContainer) curNode)
-                                        .getTempJavaCodeFragmentFiles().getServiceTempFiles()));
+                                        .getTempJavaCodeFragmentFiles().getServiceTempFiles(), path));
                 /**
                  * Setter methods.
                  */
                 methods.add(
                         getDataFromTempFileHandle(SETTER_FOR_CLASS_MASK,
                                 ((TempJavaCodeFragmentFilesContainer) curNode)
-                                        .getTempJavaCodeFragmentFiles().getServiceTempFiles())
+                                        .getTempJavaCodeFragmentFiles().getServiceTempFiles(), path)
                                 + NEW_LINE);
 
             }
@@ -343,7 +366,7 @@ public final class JavaFileGenerator {
                  * Rpc methods
                  */
                 methods.add(getDataFromTempFileHandle(RPC_IMPL_MASK,
-                        javaGeninfo.getTempJavaCodeFragmentFiles().getServiceTempFiles()));
+                        javaGeninfo.getTempJavaCodeFragmentFiles().getServiceTempFiles(), path));
             }
             insertDataIntoJavaFile(file, NEW_LINE);
 
@@ -367,10 +390,11 @@ public final class JavaFileGenerator {
      * @param file          file
      * @param curNode       current YANG node
      * @param isAttrPresent if any attribute is present or not
+     * @param imports       list of imports
      * @return impl class file
      * @throws IOException when fails to write in file
      */
-    public static File generateImplClassFile(File file, YangNode curNode, boolean isAttrPresent)
+    public static File generateImplClassFile(File file, YangNode curNode, boolean isAttrPresent, List<String> imports)
             throws IOException {
 
         JavaFileInfo javaFileInfo = ((JavaFileInfoContainer) curNode).getJavaFileInfo();
@@ -379,20 +403,14 @@ public final class JavaFileGenerator {
         String className = getCapitalCase(javaFileInfo.getJavaName());
         String path = javaFileInfo.getBaseCodeGenPath() + javaFileInfo.getPackageFilePath();
 
-        initiateJavaFileGeneration(file, className, IMPL_CLASS_MASK, null, path, pluginConfig);
+        initiateJavaFileGeneration(file, IMPL_CLASS_MASK, imports, curNode, className);
 
         List<String> methods = new ArrayList<>();
-
-        TempJavaCodeFragmentFiles javaCodeFragmentFiles = ((TempJavaCodeFragmentFilesContainer) curNode)
-                .getTempJavaCodeFragmentFiles();
-        boolean isAugmentationHolderExtended = isAugmentationHolderExtended(
-                javaCodeFragmentFiles.getBeanTempFiles().getJavaExtendsListHolder().getExtendsList());
-        /**
-         * Add attribute for augmented info's list.
-         */
-        if (isAugmentationHolderExtended) {
-            insertDataIntoJavaFile(file, getAugmentedInfoAttribute());
+        boolean isAugmentNode = false;
+        if (curNode instanceof YangAugment) {
+            isAugmentNode = true;
         }
+
         if (isAttrPresent) {
             /**
              * Add attribute strings.
@@ -401,20 +419,19 @@ public final class JavaFileGenerator {
                 insertDataIntoJavaFile(file,
                         NEW_LINE + FOUR_SPACE_INDENTATION + getDataFromTempFileHandle(ATTRIBUTES_MASK,
                                 ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles()
-                                        .getBeanTempFiles()));
+                                        .getBeanTempFiles(), path));
             } catch (IOException e) {
                 throw new IOException("No data found in temporary java code fragment files for " + className
                         + " while impl class file generation");
             }
 
-            insertDataIntoJavaFile(file, NEW_LINE);
             try {
                 /**
                  * Getter methods.
                  */
                 methods.add(getDataFromTempFileHandle(GETTER_FOR_CLASS_MASK,
                         ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles()
-                                .getBeanTempFiles()));
+                                .getBeanTempFiles(), path));
 
                 /**
                  * Hash code method.
@@ -422,20 +439,20 @@ public final class JavaFileGenerator {
                 methods.add(getHashCodeMethodClose(getHashCodeMethodOpen() +
                         getDataFromTempFileHandle(HASH_CODE_IMPL_MASK,
                                 ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles()
-                                        .getBeanTempFiles()).replace(NEW_LINE, EMPTY_STRING)));
+                                        .getBeanTempFiles(), path).replace(NEW_LINE, EMPTY_STRING)));
                 /**
                  * Equals method.
                  */
-                methods.add(getEqualsMethodClose(
-                        getEqualsMethodOpen(className + IMPL) + getDataFromTempFileHandle(EQUALS_IMPL_MASK,
+                methods.add(getEqualsMethodClose(getEqualsMethodOpen(getCapitalCase(DEFAULT) + className)
+                        + getDataFromTempFileHandle(EQUALS_IMPL_MASK,
                         ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles()
-                                        .getBeanTempFiles())));
+                                .getBeanTempFiles(), path)));
                 /**
                  * To string method.
                  */
                 methods.add(getToStringMethodOpen() + getDataFromTempFileHandle(TO_STRING_IMPL_MASK,
                         ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles()
-                                .getBeanTempFiles())
+                                .getBeanTempFiles(), path)
                         + getToStringMethodClose());
 
             } catch (IOException e) {
@@ -450,10 +467,15 @@ public final class JavaFileGenerator {
             /**
              * Constructor.
              */
-            String constructor =
-                    getConstructorStart(className, pluginConfig) + getDataFromTempFileHandle(CONSTRUCTOR_IMPL_MASK,
+            String constructor = getConstructorStart(className, pluginConfig);
+            if (isAugmentNode) {
+                constructor = constructor + EIGHT_SPACE_INDENTATION + SUPER + OPEN_PARENTHESIS
+                        + BUILDER.toLowerCase() + OBJECT
+                        + CLOSE_PARENTHESIS + SEMI_COLAN + NEW_LINE;
+            }
+            constructor = constructor + getDataFromTempFileHandle(CONSTRUCTOR_IMPL_MASK,
                     ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles()
-                                    .getBeanTempFiles());
+                            .getBeanTempFiles(), path);
 
             methods.add(constructor + FOUR_SPACE_INDENTATION + CLOSE_CURLY_BRACKET);
         } catch (IOException e) {
@@ -462,21 +484,11 @@ public final class JavaFileGenerator {
         }
 
         /**
-         * Add method for augment info's list.
-         */
-        if (isAugmentationHolderExtended) {
-            methods.add(getAddAugmentInfoMethodImpl());
-            methods.add(getAugmentInfoListImpl());
-            methods.add(getRemoveAugmentationImpl());
-        }
-
-        /**
          * Add methods in impl class.
          */
         for (String method : methods) {
-            insertDataIntoJavaFile(file, FOUR_SPACE_INDENTATION + method + NEW_LINE);
+            insertDataIntoJavaFile(file, method);
         }
-        insertDataIntoJavaFile(file, CLOSE_CURLY_BRACKET + NEW_LINE);
 
         return validateLineLength(file);
     }
@@ -510,7 +522,7 @@ public final class JavaFileGenerator {
             insertDataIntoJavaFile(file,
                     NEW_LINE + FOUR_SPACE_INDENTATION + getDataFromTempFileHandle(ATTRIBUTES_MASK,
                             ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles()
-                                    .getTypeTempFiles()));
+                                    .getTypeTempFiles(), path));
         } catch (IOException e) {
             throw new IOException("No data found in temporary java code fragment files for " + className
                     + " while type def class file generation");
@@ -528,19 +540,22 @@ public final class JavaFileGenerator {
              * Type constructor.
              */
             methods.add(getDataFromTempFileHandle(CONSTRUCTOR_FOR_TYPE_MASK,
-                    ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles().getTypeTempFiles()));
+                    ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles().getTypeTempFiles(),
+                    path));
 
             /**
              * Of method.
              */
             methods.add(getDataFromTempFileHandle(OF_STRING_IMPL_MASK,
-                    ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles().getTypeTempFiles()));
+                    ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles().getTypeTempFiles(),
+                    path));
 
             /**
              * Getter method.
              */
             methods.add(getDataFromTempFileHandle(GETTER_FOR_CLASS_MASK,
-                    ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles().getTypeTempFiles()));
+                    ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles().getTypeTempFiles(),
+                    path));
 
             /**
              * Hash code method.
@@ -548,7 +563,7 @@ public final class JavaFileGenerator {
             methods.add(getHashCodeMethodClose(getHashCodeMethodOpen() +
                     getDataFromTempFileHandle(HASH_CODE_IMPL_MASK,
                             ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles()
-                                    .getTypeTempFiles())
+                                    .getTypeTempFiles(), path)
                             .replace(NEW_LINE, EMPTY_STRING)));
 
             /**
@@ -556,14 +571,15 @@ public final class JavaFileGenerator {
              */
             methods.add(getEqualsMethodClose(getEqualsMethodOpen(className + EMPTY_STRING)
                     + getDataFromTempFileHandle(EQUALS_IMPL_MASK,
-                    ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles().getTypeTempFiles())));
+                    ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles()
+                            .getTypeTempFiles(), path)));
 
             /**
              * To string method.
              */
             methods.add(getToStringMethodOpen() + getDataFromTempFileHandle(TO_STRING_IMPL_MASK,
-                    ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles().getTypeTempFiles())
-                    + getToStringMethodClose());
+                    ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles().getTypeTempFiles(),
+                    path) + getToStringMethodClose());
 
             JavaCodeGeneratorInfo javaGeninfo = (JavaCodeGeneratorInfo) curNode;
             /**
@@ -571,7 +587,8 @@ public final class JavaFileGenerator {
              */
             methods.add(getFromStringMethodSignature(className, pluginConfig)
                     + getDataFromTempFileHandle(FROM_STRING_IMPL_MASK, javaGeninfo.getTempJavaCodeFragmentFiles()
-                    .getTypeTempFiles()) + getFromStringMethodClose());
+                    .getTypeTempFiles(), path)
+                    + getFromStringMethodClose());
 
         } catch (IOException e) {
             throw new IOException("No data found in temporary java code fragment files for " + className
@@ -615,7 +632,7 @@ public final class JavaFileGenerator {
             insertDataIntoJavaFile(file,
                     NEW_LINE + FOUR_SPACE_INDENTATION + getDataFromTempFileHandle(ATTRIBUTES_MASK,
                             ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles()
-                                    .getTypeTempFiles()));
+                                    .getTypeTempFiles(), path));
         } catch (IOException e) {
             throw new IOException("No data found in temporary java code fragment files for " + className
                     + " while union class file generation");
@@ -633,19 +650,22 @@ public final class JavaFileGenerator {
              * Type constructor.
              */
             methods.add(getDataFromTempFileHandle(CONSTRUCTOR_FOR_TYPE_MASK,
-                    ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles().getTypeTempFiles()));
+                    ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles().getTypeTempFiles(),
+                    path));
 
             /**
              * Of string method.
              */
             methods.add(getDataFromTempFileHandle(OF_STRING_IMPL_MASK,
-                    ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles().getTypeTempFiles()));
+                    ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles().getTypeTempFiles(),
+                    path));
 
             /**
              * Getter method.
              */
             methods.add(getDataFromTempFileHandle(GETTER_FOR_CLASS_MASK,
-                    ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles().getTypeTempFiles()));
+                    ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles().getTypeTempFiles(),
+                    path));
 
             /**
              * Hash code method.
@@ -653,7 +673,7 @@ public final class JavaFileGenerator {
             methods.add(getHashCodeMethodClose(getHashCodeMethodOpen() +
                     getDataFromTempFileHandle(HASH_CODE_IMPL_MASK,
                             ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles()
-                                    .getTypeTempFiles())
+                                    .getTypeTempFiles(), path)
                             .replace(NEW_LINE, EMPTY_STRING)));
 
             /**
@@ -661,7 +681,8 @@ public final class JavaFileGenerator {
              */
             methods.add(getEqualsMethodClose(getEqualsMethodOpen(className + EMPTY_STRING)
                     + getDataFromTempFileHandle(EQUALS_IMPL_MASK,
-                    ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles().getTypeTempFiles())));
+                    ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles()
+                            .getTypeTempFiles(), path)));
 
             /**
              * To string method.
@@ -669,14 +690,16 @@ public final class JavaFileGenerator {
             methods.add(getToStringMethodOpen() + getOmitNullValueString() +
                     getDataFromTempFileHandle(TO_STRING_IMPL_MASK,
                             ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles()
-                                    .getTypeTempFiles()) + getToStringMethodClose());
+                                    .getTypeTempFiles(), path)
+                    + getToStringMethodClose());
 
             /**
              * From string method.
              */
             methods.add(getFromStringMethodSignature(className, pluginConfig)
                     + getDataFromTempFileHandle(FROM_STRING_IMPL_MASK,
-                    ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles().getTypeTempFiles())
+                    ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles()
+                            .getTypeTempFiles(), path)
                     + getFromStringMethodClose());
 
         } catch (IOException e) {
@@ -717,7 +740,7 @@ public final class JavaFileGenerator {
             JavaCodeGeneratorInfo javaGeninfo = (JavaCodeGeneratorInfo) curNode;
             insertDataIntoJavaFile(file,
                     trimAtLast(trimAtLast(getDataFromTempFileHandle(ENUM_IMPL_MASK, javaGeninfo
-                            .getTempJavaCodeFragmentFiles().getEnumerationTempFiles()), COMMA), NEW_LINE)
+                            .getTempJavaCodeFragmentFiles().getEnumerationTempFiles(), path), COMMA), NEW_LINE)
                             + SEMI_COLAN + NEW_LINE);
         } catch (IOException e) {
             throw new IOException("No data found in temporary java code fragment files for " + getCapitalCase(className)
@@ -734,10 +757,10 @@ public final class JavaFileGenerator {
          * Add a constructor for enum.
          */
         insertDataIntoJavaFile(file, getJavaDoc(TYPE_CONSTRUCTOR, className, false, pluginConfig)
-                + getEnumsConstrcutor(getCapitalCase(className)) + NEW_LINE);
+                + getEnumsConstructor(getCapitalCase(className)) + NEW_LINE);
 
-        TempJavaEnumerationFragmentFiles enumFragFiles =
-                ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles()
+        TempJavaEnumerationFragmentFiles enumFragFiles = ((TempJavaCodeFragmentFilesContainer) curNode)
+                .getTempJavaCodeFragmentFiles()
                 .getEnumerationTempFiles();
         insertDataIntoJavaFile(file, getEnumsOfMethod(className,
                 enumFragFiles.getJavaAttributeForEnum(pluginConfig),
@@ -755,7 +778,7 @@ public final class JavaFileGenerator {
             insertDataIntoJavaFile(file, getFromStringMethodSignature(getCapitalCase(className), pluginConfig)
                     + getDataFromTempFileHandle(FROM_STRING_IMPL_MASK,
                     ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles()
-                                    .getEnumerationTempFiles())
+                            .getEnumerationTempFiles(), path)
                     + getFromStringMethodClose());
         } catch (IOException e) {
             throw new IOException("No data found in temporary java code fragment files for " +
@@ -784,6 +807,7 @@ public final class JavaFileGenerator {
         JavaFileInfo javaFileInfo = ((JavaFileInfoContainer) curNode).getJavaFileInfo();
 
         String className = getCapitalCase(javaFileInfo.getJavaName()) + SERVICE_METHOD_STRING;
+        String path = javaFileInfo.getBaseCodeGenPath() + javaFileInfo.getPackageFilePath();
         initiateJavaFileGeneration(file, GENERATE_SERVICE_AND_MANAGER, imports, curNode, className);
 
         List<String> methods = new ArrayList<>();
@@ -796,13 +820,13 @@ public final class JavaFileGenerator {
                  */
                 methods.add(getDataFromTempFileHandle(GETTER_FOR_INTERFACE_MASK,
                         ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles()
-                                .getServiceTempFiles()));
+                                .getServiceTempFiles(), path));
                 /**
                  * Setter methods.
                  */
                 methods.add(getDataFromTempFileHandle(SETTER_FOR_INTERFACE_MASK,
                         ((TempJavaCodeFragmentFilesContainer) curNode).getTempJavaCodeFragmentFiles()
-                                .getServiceTempFiles()));
+                                .getServiceTempFiles(), path));
             }
             if (((JavaCodeGeneratorInfo) curNode).getTempJavaCodeFragmentFiles().getServiceTempFiles() != null) {
                 JavaCodeGeneratorInfo javaGeninfo = (JavaCodeGeneratorInfo) curNode;
@@ -810,7 +834,7 @@ public final class JavaFileGenerator {
                  * Rpc methods
                  */
                 methods.add(getDataFromTempFileHandle(RPC_INTERFACE_MASK,
-                        javaGeninfo.getTempJavaCodeFragmentFiles().getServiceTempFiles()));
+                        javaGeninfo.getTempJavaCodeFragmentFiles().getServiceTempFiles(), path));
             }
         } catch (IOException e) {
             throw new IOException("No data found in temporary java code fragment files for " + className
@@ -835,20 +859,21 @@ public final class JavaFileGenerator {
      */
     public static void generateEventFile(File file, YangNode curNode, List<String> imports) throws IOException {
 
-        String className =
-                getCapitalCase(((JavaFileInfoContainer) curNode).getJavaFileInfo().getJavaName())
+        String className = getCapitalCase(((JavaFileInfoContainer) curNode).getJavaFileInfo().getJavaName())
                 + EVENT_STRING;
 
         TempJavaServiceFragmentFiles tempFiles = ((TempJavaCodeFragmentFilesContainer) curNode)
                 .getTempJavaCodeFragmentFiles().getServiceTempFiles();
 
+        String path = ((JavaFileInfoContainer) curNode).getJavaFileInfo().getBaseCodeGenPath()
+                + ((JavaFileInfoContainer) curNode).getJavaFileInfo().getPackageFilePath();
         initiateJavaFileGeneration(file, GENERATE_EVENT_CLASS, imports, curNode, className);
         try {
             insertDataIntoJavaFile(file, NEW_LINE + getEventEnumTypeStart() +
-                    trimAtLast(getDataFromTempFileHandle(EVENT_ENUM_MASK, tempFiles), COMMA)
+                    trimAtLast(getDataFromTempFileHandle(EVENT_ENUM_MASK, tempFiles, path), COMMA)
                     + FOUR_SPACE_INDENTATION + CLOSE_CURLY_BRACKET + NEW_LINE);
 
-            insertDataIntoJavaFile(file, getDataFromTempFileHandle(EVENT_METHOD_MASK, tempFiles));
+            insertDataIntoJavaFile(file, getDataFromTempFileHandle(EVENT_METHOD_MASK, tempFiles, path));
 
         } catch (IOException e) {
             throw new IOException("No data found in temporary java code fragment files for " + className
@@ -870,8 +895,7 @@ public final class JavaFileGenerator {
     public static void generateEventListenerFile(File file, YangNode curNode, List<String> imports)
             throws IOException {
 
-        String className =
-                getCapitalCase(((JavaFileInfoContainer) curNode).getJavaFileInfo().getJavaName())
+        String className = getCapitalCase(((JavaFileInfoContainer) curNode).getJavaFileInfo().getJavaName())
                 + EVENT_LISTENER_STRING;
 
         initiateJavaFileGeneration(file, GENERATE_EVENT_LISTENER_INTERFACE, imports, curNode, className);
@@ -894,16 +918,18 @@ public final class JavaFileGenerator {
 
         initiateJavaFileGeneration(file, GENERATE_EVENT_SUBJECT_CLASS, null, curNode, className);
 
+        String path = ((JavaFileInfoContainer) curNode).getJavaFileInfo().getBaseCodeGenPath()
+                + ((JavaFileInfoContainer) curNode).getJavaFileInfo().getPackageFilePath();
         TempJavaServiceFragmentFiles tempFiles = ((TempJavaCodeFragmentFilesContainer) curNode)
                 .getTempJavaCodeFragmentFiles().getServiceTempFiles();
 
         insertDataIntoJavaFile(file, NEW_LINE);
         try {
-            insertDataIntoJavaFile(file, getDataFromTempFileHandle(EVENT_SUBJECT_ATTRIBUTE_MASK, tempFiles));
+            insertDataIntoJavaFile(file, getDataFromTempFileHandle(EVENT_SUBJECT_ATTRIBUTE_MASK, tempFiles, path));
 
-            insertDataIntoJavaFile(file, getDataFromTempFileHandle(EVENT_SUBJECT_GETTER_MASK, tempFiles));
+            insertDataIntoJavaFile(file, getDataFromTempFileHandle(EVENT_SUBJECT_GETTER_MASK, tempFiles, path));
 
-            insertDataIntoJavaFile(file, getDataFromTempFileHandle(EVENT_SUBJECT_SETTER_MASK, tempFiles));
+            insertDataIntoJavaFile(file, getDataFromTempFileHandle(EVENT_SUBJECT_SETTER_MASK, tempFiles, path));
 
         } catch (IOException e) {
             throw new IOException("No data found in temporary java code fragment files for " + className

@@ -20,6 +20,7 @@ import java.io.File;
 import java.io.IOException;
 import java.util.List;
 
+import org.onosproject.yangutils.datamodel.YangAugment;
 import org.onosproject.yangutils.datamodel.YangNode;
 import org.onosproject.yangutils.translator.exception.TranslatorException;
 import org.onosproject.yangutils.translator.tojava.JavaFileInfo;
@@ -39,13 +40,14 @@ import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_EVENT_CLASS;
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_EVENT_LISTENER_INTERFACE;
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_EVENT_SUBJECT_CLASS;
+import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_IDENTITY_CLASS;
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_SERVICE_AND_MANAGER;
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_TYPEDEF_CLASS;
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_UNION_CLASS;
-import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_IDENTITY_CLASS;
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.IMPL_CLASS_MASK;
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.INTERFACE_MASK;
 import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.ATTRIBUTES_MASK;
+import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.AUGMENTE_CLASS_CONSTRUCTOR_MASK;
 import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.CONSTRUCTOR_FOR_TYPE_MASK;
 import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.CONSTRUCTOR_IMPL_MASK;
 import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.ENUM_IMPL_MASK;
@@ -66,26 +68,16 @@ import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.
 import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.SETTER_FOR_INTERFACE_MASK;
 import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.TO_STRING_IMPL_MASK;
 import static org.onosproject.yangutils.translator.tojava.utils.ClassDefinitionGenerator.generateClassDefinition;
-import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getJavaPackageFromPackagePath;
-import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getSmallCase;
-import static org.onosproject.yangutils.utils.UtilConstants.CLOSE_PARENTHESIS;
+import static org.onosproject.yangutils.utils.UtilConstants.BUILDER;
 import static org.onosproject.yangutils.utils.UtilConstants.CLOSE_CURLY_BRACKET;
-import static org.onosproject.yangutils.utils.UtilConstants.COMPONENT_ANNOTATION;
-import static org.onosproject.yangutils.utils.UtilConstants.EQUAL;
-import static org.onosproject.yangutils.utils.UtilConstants.FOUR_SPACE_INDENTATION;
-import static org.onosproject.yangutils.utils.UtilConstants.IMMEDIATE;
-import static org.onosproject.yangutils.utils.UtilConstants.INT;
+import static org.onosproject.yangutils.utils.UtilConstants.DEFAULT;
 import static org.onosproject.yangutils.utils.UtilConstants.NEW_LINE;
-import static org.onosproject.yangutils.utils.UtilConstants.OPEN_PARENTHESIS;
 import static org.onosproject.yangutils.utils.UtilConstants.PACKAGE;
 import static org.onosproject.yangutils.utils.UtilConstants.PERIOD;
-import static org.onosproject.yangutils.utils.UtilConstants.PRIVATE;
 import static org.onosproject.yangutils.utils.UtilConstants.REGEX_FOR_ANY_STRING_ENDING_WITH_SERVICE;
 import static org.onosproject.yangutils.utils.UtilConstants.SEMI_COLAN;
-import static org.onosproject.yangutils.utils.UtilConstants.SERVICE_ANNOTATION;
 import static org.onosproject.yangutils.utils.UtilConstants.SLASH;
 import static org.onosproject.yangutils.utils.UtilConstants.SPACE;
-import static org.onosproject.yangutils.utils.UtilConstants.TRUE;
 import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.JavaDocType.BUILDER_CLASS;
 import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.JavaDocType.BUILDER_INTERFACE;
 import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.JavaDocType.ENUM_CLASS;
@@ -97,6 +89,9 @@ import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.JavaDocType.INT
 import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.JavaDocType.RPC_INTERFACE;
 import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.JavaDocType.RPC_MANAGER;
 import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.getJavaDoc;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCamelCase;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCapitalCase;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getJavaPackageFromPackagePath;
 import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.insertDataIntoJavaFile;
 import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.parsePkg;
 
@@ -130,11 +125,12 @@ public final class JavaFileGeneratorUtils {
      *
      * @param generatedTempFiles    temporary file types
      * @param tempJavaFragmentFiles temp java fragment files
+     * @param absolutePath          absolute path
      * @return data stored in temporary files
      * @throws IOException when failed to get the data from temporary file handle
      */
     public static String getDataFromTempFileHandle(int generatedTempFiles,
-            TempJavaFragmentFiles tempJavaFragmentFiles)
+                                                   TempJavaFragmentFiles tempJavaFragmentFiles, String absolutePath)
             throws IOException {
 
         TempJavaTypeFragmentFiles typeFragmentFiles = null;
@@ -156,49 +152,64 @@ public final class JavaFileGeneratorUtils {
 
         if ((generatedTempFiles & ATTRIBUTES_MASK) != 0) {
             return tempJavaFragmentFiles
-                    .getTemporaryDataFromFileHandle(tempJavaFragmentFiles.getAttributesTempFileHandle());
+                    .getTemporaryDataFromFileHandle(tempJavaFragmentFiles.getAttributesTempFileHandle(),
+                            absolutePath);
         } else if ((generatedTempFiles & GETTER_FOR_INTERFACE_MASK) != 0) {
             return tempJavaFragmentFiles
-                    .getTemporaryDataFromFileHandle(tempJavaFragmentFiles.getGetterInterfaceTempFileHandle());
+                    .getTemporaryDataFromFileHandle(tempJavaFragmentFiles.getGetterInterfaceTempFileHandle(),
+                            absolutePath);
         } else if ((generatedTempFiles & SETTER_FOR_INTERFACE_MASK) != 0) {
             return tempJavaFragmentFiles
-                    .getTemporaryDataFromFileHandle(tempJavaFragmentFiles.getSetterInterfaceTempFileHandle());
+                    .getTemporaryDataFromFileHandle(tempJavaFragmentFiles.getSetterInterfaceTempFileHandle(),
+                            absolutePath);
         } else if ((generatedTempFiles & GETTER_FOR_CLASS_MASK) != 0) {
             return tempJavaFragmentFiles
-                    .getTemporaryDataFromFileHandle(tempJavaFragmentFiles.getGetterImplTempFileHandle());
+                    .getTemporaryDataFromFileHandle(tempJavaFragmentFiles.getGetterImplTempFileHandle(),
+                            absolutePath);
         } else if ((generatedTempFiles & SETTER_FOR_CLASS_MASK) != 0) {
             return tempJavaFragmentFiles
-                    .getTemporaryDataFromFileHandle(tempJavaFragmentFiles.getSetterImplTempFileHandle());
+                    .getTemporaryDataFromFileHandle(tempJavaFragmentFiles.getSetterImplTempFileHandle(),
+                            absolutePath);
         } else if ((generatedTempFiles & CONSTRUCTOR_IMPL_MASK) != 0) {
             if (beanFragmentFiles == null) {
                 throw new TranslatorException("Required constructor info is missing.");
             }
             return beanFragmentFiles
-                    .getTemporaryDataFromFileHandle(beanFragmentFiles.getConstructorImplTempFileHandle());
+                    .getTemporaryDataFromFileHandle(beanFragmentFiles.getConstructorImplTempFileHandle(),
+                            absolutePath);
         } else if ((generatedTempFiles & HASH_CODE_IMPL_MASK) != 0) {
             return tempJavaFragmentFiles
-                    .getTemporaryDataFromFileHandle(tempJavaFragmentFiles.getHashCodeImplTempFileHandle());
+                    .getTemporaryDataFromFileHandle(tempJavaFragmentFiles.getHashCodeImplTempFileHandle(),
+                            absolutePath);
         } else if ((generatedTempFiles & EQUALS_IMPL_MASK) != 0) {
             return tempJavaFragmentFiles
-                    .getTemporaryDataFromFileHandle(tempJavaFragmentFiles.getEqualsImplTempFileHandle());
+                    .getTemporaryDataFromFileHandle(tempJavaFragmentFiles.getEqualsImplTempFileHandle(),
+                            absolutePath);
         } else if ((generatedTempFiles & TO_STRING_IMPL_MASK) != 0) {
             return tempJavaFragmentFiles
-                    .getTemporaryDataFromFileHandle(tempJavaFragmentFiles.getToStringImplTempFileHandle());
+                    .getTemporaryDataFromFileHandle(tempJavaFragmentFiles.getToStringImplTempFileHandle(),
+                            absolutePath);
+        } else if ((generatedTempFiles & AUGMENTE_CLASS_CONSTRUCTOR_MASK) != 0) {
+            return tempJavaFragmentFiles
+                    .getTemporaryDataFromFileHandle(tempJavaFragmentFiles.getAugmentConstructorImplTempFileHandle(),
+                            absolutePath);
         } else if ((generatedTempFiles & OF_STRING_IMPL_MASK) != 0) {
             if (typeFragmentFiles == null) {
                 throw new TranslatorException("Required of string implementation info is missing.");
             }
             return typeFragmentFiles
-                    .getTemporaryDataFromFileHandle(typeFragmentFiles.getOfStringImplTempFileHandle());
+                    .getTemporaryDataFromFileHandle(typeFragmentFiles.getOfStringImplTempFileHandle(), absolutePath);
         } else if ((generatedTempFiles & CONSTRUCTOR_FOR_TYPE_MASK) != 0) {
             if (typeFragmentFiles == null) {
                 throw new TranslatorException("Required constructor implementation info is missing.");
             }
             return typeFragmentFiles
-                    .getTemporaryDataFromFileHandle(typeFragmentFiles.getConstructorForTypeTempFileHandle());
+                    .getTemporaryDataFromFileHandle(typeFragmentFiles.getConstructorForTypeTempFileHandle(),
+                            absolutePath);
         } else if ((generatedTempFiles & FROM_STRING_IMPL_MASK) != 0) {
             return tempJavaFragmentFiles
-                    .getTemporaryDataFromFileHandle(tempJavaFragmentFiles.getFromStringImplTempFileHandle());
+                    .getTemporaryDataFromFileHandle(tempJavaFragmentFiles.getFromStringImplTempFileHandle(),
+                            absolutePath);
         } else if ((generatedTempFiles & ENUM_IMPL_MASK) != 0) {
             if (!(tempJavaFragmentFiles instanceof TempJavaEnumerationFragmentFiles)) {
                 throw new TranslatorException("Required enum info is missing.");
@@ -206,49 +217,56 @@ public final class JavaFileGeneratorUtils {
             TempJavaEnumerationFragmentFiles enumFragmentFiles =
                     (TempJavaEnumerationFragmentFiles) tempJavaFragmentFiles;
             return enumFragmentFiles
-                    .getTemporaryDataFromFileHandle(enumFragmentFiles.getEnumClassTempFileHandle());
+                    .getTemporaryDataFromFileHandle(enumFragmentFiles.getEnumClassTempFileHandle(), absolutePath);
         } else if ((generatedTempFiles & RPC_INTERFACE_MASK) != 0) {
             if (serviceFragmentFiles == null) {
                 throw new TranslatorException("Required rpc interface info is missing.");
             }
             return serviceFragmentFiles
-                    .getTemporaryDataFromFileHandle(serviceFragmentFiles.getRpcInterfaceTempFileHandle());
+                    .getTemporaryDataFromFileHandle(serviceFragmentFiles.getRpcInterfaceTempFileHandle(),
+                            absolutePath);
         } else if ((generatedTempFiles & RPC_IMPL_MASK) != 0) {
             if (serviceFragmentFiles == null) {
                 throw new TranslatorException("Required rpc implementation info is missing.");
             }
             return serviceFragmentFiles
-                    .getTemporaryDataFromFileHandle(serviceFragmentFiles.getRpcImplTempFileHandle());
+                    .getTemporaryDataFromFileHandle(serviceFragmentFiles.getRpcImplTempFileHandle(),
+                            absolutePath);
         } else if ((generatedTempFiles & EVENT_ENUM_MASK) != 0) {
             if (serviceFragmentFiles == null) {
                 throw new TranslatorException("Required rpc implementation info is missing.");
             }
             return serviceFragmentFiles
-                    .getTemporaryDataFromFileHandle(serviceFragmentFiles.getEventEnumTempFileHandle());
+                    .getTemporaryDataFromFileHandle(serviceFragmentFiles.getEventEnumTempFileHandle(),
+                            absolutePath);
         } else if ((generatedTempFiles & EVENT_METHOD_MASK) != 0) {
             if (serviceFragmentFiles == null) {
                 throw new TranslatorException("Required rpc implementation info is missing.");
             }
             return serviceFragmentFiles
-                    .getTemporaryDataFromFileHandle(serviceFragmentFiles.getEventMethodTempFileHandle());
+                    .getTemporaryDataFromFileHandle(serviceFragmentFiles.getEventMethodTempFileHandle(),
+                            absolutePath);
         } else if ((generatedTempFiles & EVENT_SUBJECT_GETTER_MASK) != 0) {
             if (serviceFragmentFiles == null) {
                 throw new TranslatorException("Required rpc implementation info is missing.");
             }
             return serviceFragmentFiles
-                    .getTemporaryDataFromFileHandle(serviceFragmentFiles.getEventSubjectGetterTempFileHandle());
+                    .getTemporaryDataFromFileHandle(serviceFragmentFiles.getEventSubjectGetterTempFileHandle(),
+                            absolutePath);
         } else if ((generatedTempFiles & EVENT_SUBJECT_SETTER_MASK) != 0) {
             if (serviceFragmentFiles == null) {
                 throw new TranslatorException("Required rpc implementation info is missing.");
             }
             return serviceFragmentFiles
-                    .getTemporaryDataFromFileHandle(serviceFragmentFiles.getEventSubjectSetterTempFileHandle());
+                    .getTemporaryDataFromFileHandle(serviceFragmentFiles.getEventSubjectSetterTempFileHandle(),
+                            absolutePath);
         } else if ((generatedTempFiles & EVENT_SUBJECT_ATTRIBUTE_MASK) != 0) {
             if (serviceFragmentFiles == null) {
                 throw new TranslatorException("Required rpc implementation info is missing.");
             }
             return serviceFragmentFiles
-                    .getTemporaryDataFromFileHandle(serviceFragmentFiles.getEventSubjectAttributeTempFileHandle());
+                    .getTemporaryDataFromFileHandle(serviceFragmentFiles.getEventSubjectAttributeTempFileHandle(),
+                            absolutePath);
         }
         return null;
     }
@@ -291,12 +309,7 @@ public final class JavaFileGeneratorUtils {
             throws IOException {
 
         try {
-            if (file.exists()) {
-                throw new IOException(file.getName() + " is reused due to YANG naming");
-            }
-
             file.createNewFile();
-
             appendContents(file, genType, imports, curNode, className);
         } catch (IOException e) {
             throw new IOException("Failed to create " + file.getName() + " class file.");
@@ -322,6 +335,10 @@ public final class JavaFileGeneratorUtils {
         String name = javaFileInfo.getJavaName();
         String path = javaFileInfo.getBaseCodeGenPath() + javaFileInfo.getPackageFilePath();
 
+        YangNode augmentedNode = null;
+        if (curNode instanceof YangAugment) {
+            augmentedNode = ((YangAugment) curNode).getAugmentedNode();
+        }
         String pkgString = null;
         if (genType == GENERATE_EVENT_CLASS
                 || genType == GENERATE_EVENT_LISTENER_INTERFACE
@@ -332,9 +349,23 @@ public final class JavaFileGeneratorUtils {
         }
         switch (genType) {
             case INTERFACE_MASK:
+                if (augmentedNode != null) {
+                    appendHeaderContents(file, pkgString, importsList, augmentedNode);
+                } else {
                     appendHeaderContents(file, pkgString, importsList);
+                }
                 write(file, genType, INTERFACE, curNode, className);
                 break;
+            case IMPL_CLASS_MASK:
+                appendHeaderContents(file, pkgString, importsList);
+                write(file, genType, IMPL_CLASS, curNode, className);
+                break;
+            case BUILDER_CLASS_MASK:
+                write(file, genType, BUILDER_CLASS, curNode, className);
+                break;
+            case BUILDER_INTERFACE_MASK:
+                write(file, genType, BUILDER_INTERFACE, curNode, className);
+                break;
             case GENERATE_SERVICE_AND_MANAGER:
                 appendHeaderContents(file, pkgString, importsList);
                 write(file, genType, RPC_INTERFACE, curNode, className);
@@ -379,20 +410,10 @@ public final class JavaFileGeneratorUtils {
         String pkgString = parsePackageString(pkg, importsList);
 
         switch (genType) {
-            case IMPL_CLASS_MASK:
-                write(file, fileName, genType, IMPL_CLASS, pluginConfig);
-                break;
-            case BUILDER_INTERFACE_MASK:
-                write(file, fileName, genType, BUILDER_INTERFACE, pluginConfig);
-                break;
             case GENERATE_TYPEDEF_CLASS:
                 appendHeaderContents(file, pkgString, importsList);
                 write(file, fileName, genType, IMPL_CLASS, pluginConfig);
                 break;
-            case BUILDER_CLASS_MASK:
-                appendHeaderContents(file, pkgString, importsList);
-                write(file, fileName, genType, BUILDER_CLASS, pluginConfig);
-                break;
             case GENERATE_UNION_CLASS:
                 appendHeaderContents(file, pkgString, importsList);
                 write(file, fileName, genType, IMPL_CLASS, pluginConfig);
@@ -428,7 +449,7 @@ public final class JavaFileGeneratorUtils {
     }
 
     /**
-     * Appends other contents to interface, builder and typedef classes.
+     * Appends other contents to interface, impl and typedef classes.
      * for example : ONOS copyright, imports and package.
      *
      * @param file        generated file
@@ -456,6 +477,39 @@ public final class JavaFileGeneratorUtils {
     }
 
     /**
+     * Appends other contents to interface and impl classes when augmented node is not null.
+     * for example : ONOS copyright, imports and package.
+     *
+     * @param file          generated file
+     * @param pkg           generated package
+     * @param augmentedNode augmented node
+     * @param importsList   list of imports
+     * @throws IOException when fails to append contents
+     */
+    private static void appendHeaderContents(File file, String pkg, List<String> importsList, YangNode augmentedNode)
+            throws IOException {
+
+        insertDataIntoJavaFile(file, CopyrightHeader.getCopyrightHeader());
+        insertDataIntoJavaFile(file, pkg);
+
+        /*
+         * TODO: add the file header using
+         * JavaCodeSnippetGen.getFileHeaderComment
+         */
+
+        if (importsList != null) {
+            insertDataIntoJavaFile(file, NEW_LINE);
+            for (String imports : importsList) {
+                if (!imports.contains(getCapitalCase(DEFAULT) + getCapitalCase(getCamelCase(augmentedNode.getName(),
+                        null)))
+                        && !imports.contains(getCapitalCase(getCamelCase(augmentedNode.getName(), null)) + BUILDER)) {
+                    insertDataIntoJavaFile(file, imports);
+                }
+            }
+        }
+    }
+
+    /**
      * Writes data to the specific generated file.
      *
      * @param file        generated file
@@ -472,7 +526,7 @@ public final class JavaFileGeneratorUtils {
         if ((genType & GENERATE_SERVICE_AND_MANAGER) != 0) {
             if (!fileName.matches(REGEX_FOR_ANY_STRING_ENDING_WITH_SERVICE)) {
                 insertDataIntoJavaFile(file, getJavaDoc(RPC_MANAGER, fileName, false, pluginConfig));
-                insertDataIntoJavaFile(file, addComponentString());
+                insertDataIntoJavaFile(file, JavaCodeSnippetGen.addComponentString());
             } else {
                 insertDataIntoJavaFile(file, getJavaDoc(javaDocType, fileName, false, pluginConfig));
             }
@@ -499,24 +553,4 @@ public final class JavaFileGeneratorUtils {
         insertDataIntoJavaFile(file, generateClassDefinition(genType, fileName));
     }
 
-    /**
-     * Returns integer attribute for enum's class to get the values.
-     *
-     * @param className enum's class name
-     * @return enum's attribute
-     */
-    public static String getEnumsValueAttribute(String className) {
-        return NEW_LINE + FOUR_SPACE_INDENTATION + PRIVATE + SPACE + INT + SPACE + getSmallCase(className)
-                + SEMI_COLAN + NEW_LINE;
-    }
-
-    /**
-     * Returns component string.
-     *
-     * @return component string
-     */
-    public static String addComponentString() {
-        return NEW_LINE + COMPONENT_ANNOTATION + SPACE + OPEN_PARENTHESIS + IMMEDIATE + SPACE
-                + EQUAL + SPACE + TRUE + CLOSE_PARENTHESIS + NEW_LINE + SERVICE_ANNOTATION;
-    }
 }

@@ -54,11 +54,8 @@ import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getPackageDirP
  */
 public final class JavaIdentifierSyntax {
 
-    private static final int MAX_MONTHS = 12;
-    private static final int MAX_DAYS = 31;
     private static final int INDEX_ZERO = 0;
     private static final int INDEX_ONE = 1;
-    private static final int INDEX_TWO = 2;
     private static final int VALUE_CHECK = 10;
     private static final String ZERO = "0";
     private static final String DATE_FORMAT = "yyyy-MM-dd";

@@ -32,10 +32,8 @@ import static org.onosproject.yangutils.utils.UtilConstants.ACTIVATE;
 import static org.onosproject.yangutils.utils.UtilConstants.ACTIVATE_ANNOTATION;
 import static org.onosproject.yangutils.utils.UtilConstants.ADD_STRING;
 import static org.onosproject.yangutils.utils.UtilConstants.AND;
-import static org.onosproject.yangutils.utils.UtilConstants.AUGMENTATION;
-import static org.onosproject.yangutils.utils.UtilConstants.AUGMENTED_INFO;
-import static org.onosproject.yangutils.utils.UtilConstants.BIG_INTEGER;
 import static org.onosproject.yangutils.utils.UtilConstants.BIG_DECIMAL;
+import static org.onosproject.yangutils.utils.UtilConstants.BIG_INTEGER;
 import static org.onosproject.yangutils.utils.UtilConstants.BOOLEAN_DATA_TYPE;
 import static org.onosproject.yangutils.utils.UtilConstants.BOOLEAN_WRAPPER;
 import static org.onosproject.yangutils.utils.UtilConstants.BUILD;
@@ -45,7 +43,6 @@ import static org.onosproject.yangutils.utils.UtilConstants.BYTE_WRAPPER;
 import static org.onosproject.yangutils.utils.UtilConstants.CASE;
 import static org.onosproject.yangutils.utils.UtilConstants.CATCH;
 import static org.onosproject.yangutils.utils.UtilConstants.CHECK_NOT_NULL_STRING;
-import static org.onosproject.yangutils.utils.UtilConstants.CLEAR;
 import static org.onosproject.yangutils.utils.UtilConstants.CLOSE_CURLY_BRACKET;
 import static org.onosproject.yangutils.utils.UtilConstants.CLOSE_PARENTHESIS;
 import static org.onosproject.yangutils.utils.UtilConstants.COLAN;
@@ -72,7 +69,6 @@ import static org.onosproject.yangutils.utils.UtilConstants.GOOGLE_MORE_OBJECT_M
 import static org.onosproject.yangutils.utils.UtilConstants.HASH;
 import static org.onosproject.yangutils.utils.UtilConstants.HASH_CODE_STRING;
 import static org.onosproject.yangutils.utils.UtilConstants.IF;
-import static org.onosproject.yangutils.utils.UtilConstants.IMPL;
 import static org.onosproject.yangutils.utils.UtilConstants.INSTANCE_OF;
 import static org.onosproject.yangutils.utils.UtilConstants.INT;
 import static org.onosproject.yangutils.utils.UtilConstants.INTEGER_WRAPPER;
@@ -122,7 +118,6 @@ import static org.onosproject.yangutils.utils.UtilConstants.TWELVE_SPACE_INDENTA
 import static org.onosproject.yangutils.utils.UtilConstants.VALUE;
 import static org.onosproject.yangutils.utils.UtilConstants.VOID;
 import static org.onosproject.yangutils.utils.UtilConstants.YANG_UTILS_TODO;
-import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.getJavaDoc;
 import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.JavaDocType.BUILD_METHOD;
 import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.JavaDocType.CONSTRUCTOR;
 import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.JavaDocType.DEFAULT_CONSTRUCTOR;
@@ -132,6 +127,8 @@ import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.JavaDocType.MAN
 import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.JavaDocType.OF_METHOD;
 import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.JavaDocType.SETTER_METHOD;
 import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.JavaDocType.TYPE_CONSTRUCTOR;
+import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.generateForTypeConstructor;
+import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.getJavaDoc;
 import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCamelCase;
 import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCapitalCase;
 import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getSmallCase;
@@ -515,39 +512,34 @@ public final class MethodsGenerator {
     public static String getConstructorStart(String yangName, YangPluginConfig pluginConfig) {
 
         String javadoc = getConstructorString(yangName, pluginConfig);
-        String constructor =
-                FOUR_SPACE_INDENTATION + PUBLIC + SPACE + yangName + IMPL + OPEN_PARENTHESIS + yangName
-                        + BUILDER + SPACE + BUILDER.toLowerCase() + OBJECT + CLOSE_PARENTHESIS + SPACE
-                        + OPEN_CURLY_BRACKET
-                        + NEW_LINE;
+        String constructor = FOUR_SPACE_INDENTATION + PUBLIC + SPACE + getCapitalCase(DEFAULT) + yangName +
+                OPEN_PARENTHESIS + yangName + BUILDER + SPACE + BUILDER.toLowerCase() + OBJECT
+                + CLOSE_PARENTHESIS + SPACE + OPEN_CURLY_BRACKET + NEW_LINE;
         return javadoc + constructor;
     }
 
     /**
      * Returns the constructor strings for class file.
      *
-     * @param yangName           name of the class
      * @param attr               attribute info
      * @param generatedJavaFiles generated java files
      * @param pluginConfig       plugin configurations
      * @return constructor for class
      */
-    public static String getConstructor(String yangName, JavaAttributeInfo attr, int generatedJavaFiles,
+    public static String getConstructor(JavaAttributeInfo attr, int generatedJavaFiles,
                                         YangPluginConfig pluginConfig) {
 
         String attributeName = attr.getAttributeName();
         String constructor;
 
         if ((generatedJavaFiles & GENERATE_SERVICE_AND_MANAGER) != 0) {
-            constructor =
-                    EIGHT_SPACE_INDENTATION + THIS + PERIOD
+            constructor = EIGHT_SPACE_INDENTATION + THIS + PERIOD
                     + getCamelCase(attributeName, pluginConfig.getConflictResolver()) + SPACE + EQUAL
                     + SPACE + BUILDER.toLowerCase() + OBJECT + PERIOD + GET_METHOD_PREFIX
                     + getCapitalCase(getCamelCase(attributeName, pluginConfig.getConflictResolver()))
                     + OPEN_PARENTHESIS + CLOSE_PARENTHESIS + SEMI_COLAN + NEW_LINE;
         } else {
-            constructor =
-                    EIGHT_SPACE_INDENTATION + THIS + PERIOD
+            constructor = EIGHT_SPACE_INDENTATION + THIS + PERIOD
                     + getCamelCase(attributeName, pluginConfig.getConflictResolver()) + SPACE + EQUAL
                     + SPACE + BUILDER.toLowerCase() + OBJECT + PERIOD
                     + getCamelCase(attributeName, pluginConfig.getConflictResolver()) +
@@ -593,8 +585,7 @@ public final class MethodsGenerator {
             inputName = inputName + SPACE + RPC_INPUT_VAR_NAME;
         }
 
-        String method =
-                getOverRideString() + FOUR_SPACE_INDENTATION + PUBLIC + SPACE + outputName + SPACE + rpcName
+        String method = getOverRideString() + FOUR_SPACE_INDENTATION + PUBLIC + SPACE + outputName + SPACE + rpcName
                 + OPEN_PARENTHESIS + inputName + CLOSE_PARENTHESIS + SPACE
                 + OPEN_CURLY_BRACKET + NEW_LINE + EIGHT_SPACE_INDENTATION + YANG_UTILS_TODO + NEW_LINE;
         if (!outputName.contentEquals(VOID)) {
@@ -614,9 +605,9 @@ public final class MethodsGenerator {
      */
     public static String getBuild(String yangName) {
         return FOUR_SPACE_INDENTATION + PUBLIC + SPACE + yangName + SPACE + BUILD + OPEN_PARENTHESIS + CLOSE_PARENTHESIS
-                + SPACE + OPEN_CURLY_BRACKET + NEW_LINE + EIGHT_SPACE_INDENTATION + RETURN + SPACE + NEW + SPACE
-                + yangName + IMPL + OPEN_PARENTHESIS + THIS + CLOSE_PARENTHESIS + SEMI_COLAN + NEW_LINE
-                + FOUR_SPACE_INDENTATION + CLOSE_CURLY_BRACKET;
+                + SPACE + OPEN_CURLY_BRACKET + NEW_LINE + EIGHT_SPACE_INDENTATION + RETURN + SPACE + NEW + SPACE +
+                getCapitalCase(DEFAULT) + yangName + OPEN_PARENTHESIS + THIS + CLOSE_PARENTHESIS + SEMI_COLAN
+                + NEW_LINE + FOUR_SPACE_INDENTATION + CLOSE_CURLY_BRACKET;
     }
 
     /**
@@ -950,59 +941,12 @@ public final class MethodsGenerator {
     }
 
     /**
-     * Returns implementation of add augmentation method of AugmentationHolder class.
-     *
-     * @return implementation of add augmentation method of AugmentationHolder class
-     */
-    public static String getAddAugmentInfoMethodImpl() {
-        String method = FOUR_SPACE_INDENTATION;
-        method = method + getOverRideString() + FOUR_SPACE_INDENTATION + PUBLIC + SPACE + VOID + SPACE + ADD_STRING
-                + AUGMENTATION + OPEN_PARENTHESIS + AUGMENTED_INFO + SPACE + VALUE + CLOSE_PARENTHESIS + SPACE
-                + OPEN_CURLY_BRACKET + NEW_LINE + EIGHT_SPACE_INDENTATION + GET_METHOD_PREFIX + AUGMENTED_INFO + LIST
-                + OPEN_PARENTHESIS + CLOSE_PARENTHESIS + PERIOD + ADD_STRING + OPEN_PARENTHESIS + VALUE
-                + CLOSE_PARENTHESIS + SEMI_COLAN + NEW_LINE + FOUR_SPACE_INDENTATION + CLOSE_CURLY_BRACKET;
-
-        return method;
-    }
-
-    /**
-     * Returns implementation of get augment info list method of AugmentationHolder class.
-     *
-     * @return implementation of get augment info list method of AugmentationHolder class
-     */
-    public static String getAugmentInfoListImpl() {
-
-        String method = FOUR_SPACE_INDENTATION;
-        method = method + getOverRideString() + FOUR_SPACE_INDENTATION + PUBLIC + SPACE + LIST + DIAMOND_OPEN_BRACKET
-                + AUGMENTED_INFO + DIAMOND_CLOSE_BRACKET + SPACE + GET_METHOD_PREFIX + AUGMENTED_INFO + LIST
-                + OPEN_PARENTHESIS + CLOSE_PARENTHESIS + SPACE + OPEN_CURLY_BRACKET + NEW_LINE + EIGHT_SPACE_INDENTATION
-                + RETURN + SPACE + getSmallCase(AUGMENTED_INFO) + LIST + SEMI_COLAN + NEW_LINE + FOUR_SPACE_INDENTATION
-                + CLOSE_CURLY_BRACKET;
-        return method;
-    }
-
-    /**
-     * Returns implementation of remove augmentation method of AugmentationHolder class.
-     *
-     * @return implementation of remove augmentation method of AugmentationHolder class
-     */
-    public static String getRemoveAugmentationImpl() {
-        String method = FOUR_SPACE_INDENTATION;
-        method = method + getOverRideString() + FOUR_SPACE_INDENTATION + PUBLIC + SPACE + VOID + SPACE + "remove"
-                + AUGMENTATION + OPEN_PARENTHESIS + CLOSE_PARENTHESIS + SPACE + OPEN_CURLY_BRACKET + NEW_LINE
-                + EIGHT_SPACE_INDENTATION + GET_METHOD_PREFIX + AUGMENTED_INFO + LIST + OPEN_PARENTHESIS
-                + CLOSE_PARENTHESIS + PERIOD + CLEAR + OPEN_PARENTHESIS + CLOSE_PARENTHESIS + SEMI_COLAN + NEW_LINE
-                + FOUR_SPACE_INDENTATION + CLOSE_CURLY_BRACKET;
-        return method;
-    }
-
-    /**
      * Returns enum's constructor.
      *
      * @param className enum's class name
      * @return enum's constructor
      */
-    public static String getEnumsConstrcutor(String className) {
+    public static String getEnumsConstructor(String className) {
         return FOUR_SPACE_INDENTATION + className + OPEN_PARENTHESIS + INT + SPACE + VALUE + CLOSE_PARENTHESIS + SPACE
                 + OPEN_CURLY_BRACKET + NEW_LINE + EIGHT_SPACE_INDENTATION + getSmallCase(className) + SPACE + EQUAL
                 + SPACE + VALUE + SEMI_COLAN + NEW_LINE + FOUR_SPACE_INDENTATION + CLOSE_CURLY_BRACKET;
@@ -1118,4 +1062,38 @@ public final class MethodsGenerator {
                 throw new TranslatorException("given data type is not supported.");
         }
     }
+
+    /**
+     * Returns copy constructor for augmented class.
+     *
+     * @param yangName    augmente class name
+     * @param augmentName augmented class name
+     * @return copy constructor for augmented class
+     */
+    public static String getAugmentedNodesConstructorStart(String yangName,
+                                                           String augmentName) {
+
+        String javadoc = generateForTypeConstructor(yangName);
+        String constructor = FOUR_SPACE_INDENTATION + PUBLIC + SPACE + yangName + BUILDER + OPEN_PARENTHESIS
+                + augmentName + PERIOD + augmentName + BUILDER + SPACE + VALUE + CLOSE_PARENTHESIS + SPACE
+                + OPEN_CURLY_BRACKET + NEW_LINE;
+        return javadoc + constructor;
+
+    }
+
+    /**
+     * Returns the constructor strings for class file.
+     *
+     * @param attr         attribute info
+     * @param pluginConfig plugin configurations
+     * @return constructor for class
+     */
+    public static String getAugmentedConstructor(JavaAttributeInfo attr, YangPluginConfig pluginConfig) {
+
+        String attributeName = getCamelCase(attr.getAttributeName(), pluginConfig.getConflictResolver());
+
+        return EIGHT_SPACE_INDENTATION + THIS + PERIOD + attributeName + OPEN_PARENTHESIS
+                + VALUE + PERIOD + attributeName + OPEN_PARENTHESIS + CLOSE_PARENTHESIS
+                + CLOSE_PARENTHESIS + SEMI_COLAN + NEW_LINE;
+    }
 }

-/*
- * Copyright 2016-present Open Networking Laboratory
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.onosproject.yangutils.translator.tojava.utils;
-
-import java.io.File;
-import java.io.IOException;
-import java.util.List;
-import org.onosproject.yangutils.datamodel.YangNode;
-import org.onosproject.yangutils.translator.tojava.JavaQualifiedTypeInfo;
-import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFiles;
-import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFilesContainer;
-import org.onosproject.yangutils.translator.tojava.TempJavaFragmentFiles;
-
-import static org.onosproject.yangutils.utils.UtilConstants.ACTIVATE_ANNOTATION_IMPORT;
-import static org.onosproject.yangutils.utils.UtilConstants.AUGMENTATION_HOLDER;
-import static org.onosproject.yangutils.utils.UtilConstants.AUGMENTED_INFO;
-import static org.onosproject.yangutils.utils.UtilConstants.COMPONENT_ANNOTATION_IMPORT;
-import static org.onosproject.yangutils.utils.UtilConstants.DEACTIVATE_ANNOTATION_IMPORT;
-import static org.onosproject.yangutils.utils.UtilConstants.ENUM;
-import static org.onosproject.yangutils.utils.UtilConstants.FOUR_SPACE_INDENTATION;
-import static org.onosproject.yangutils.utils.UtilConstants.LISTENER_SERVICE;
-import static org.onosproject.yangutils.utils.UtilConstants.LOGGER_FACTORY_IMPORT;
-import static org.onosproject.yangutils.utils.UtilConstants.LOGGER_IMPORT;
-import static org.onosproject.yangutils.utils.UtilConstants.NEW_LINE;
-import static org.onosproject.yangutils.utils.UtilConstants.OPEN_CURLY_BRACKET;
-import static org.onosproject.yangutils.utils.UtilConstants.PUBLIC;
-import static org.onosproject.yangutils.utils.UtilConstants.SERVICE_ANNOTATION_IMPORT;
-import static org.onosproject.yangutils.utils.UtilConstants.SPACE;
-import static org.onosproject.yangutils.utils.UtilConstants.TYPE;
-import static org.onosproject.yangutils.utils.io.impl.FileSystemUtil.updateFileHandle;
-import static java.util.Collections.sort;
-
-/**
- * Represents utilities for temporary java code fragments.
- */
-public final class TempJavaCodeFragmentFilesUtils {
-
-    /**
-     * Creates a private instance of temporary java code fragment utils.
-     */
-    private TempJavaCodeFragmentFilesUtils() {
-    }
-
-    /**
-     * Adds import for AugmentationHolders class.
-     *
-     * @param curNode   current YANG node
-     * @param imports   list of imports
-     * @param operation add or delete import
-     */
-    public static void addAugmentationHoldersImport(YangNode curNode, List<String> imports, boolean operation) {
-        String thisImport = getTempJavaFragement(curNode).getJavaImportData().getAugmentationHolderImport();
-        performOperationOnImports(imports, thisImport, operation);
-    }
-
-    /**
-     * Adds import for AugmentedInfo class.
-     *
-     * @param curNode   current YANG node
-     * @param imports   list of imports
-     * @param operation add or delete import
-     */
-    public static void addAugmentedInfoImport(YangNode curNode, List<String> imports, boolean operation) {
-        String thisImport = getTempJavaFragement(curNode).getJavaImportData().getAugmentedInfoImport();
-        performOperationOnImports(imports, thisImport, operation);
-    }
-
-    /**
-     * Returns temp java fragment.
-     *
-     * @param curNode current YANG node
-     * @return temp java fragments
-     */
-    public static TempJavaFragmentFiles getTempJavaFragement(YangNode curNode) {
-        TempJavaCodeFragmentFiles container = ((TempJavaCodeFragmentFilesContainer) curNode)
-                .getTempJavaCodeFragmentFiles();
-        if (container.getBeanTempFiles() != null) {
-            return container.getBeanTempFiles();
-        }
-        if (container.getServiceTempFiles() != null) {
-            return container.getServiceTempFiles();
-        }
-
-        return null;
-    }
-
-    /**
-     * Adds import for array list.
-     *
-     * @param curNode   current YANG node
-     * @param imports   list of imports
-     * @param operation add or delete import
-     */
-    public static void addArrayListImport(YangNode curNode, List<String> imports, boolean operation) {
-        String arrayListImport = getTempJavaFragement(curNode).getJavaImportData().getImportForArrayList();
-        String listImport = getTempJavaFragement(curNode).getJavaImportData().getImportForList();
-        performOperationOnImports(imports, arrayListImport, operation);
-        if (!imports.contains(listImport)) {
-            /**
-             * List can be there because of attribute also , so no need to remove it and operation will
-             * always be add(true).
-             */
-            performOperationOnImports(imports, listImport, true);
-        }
-    }
-
-    /**
-     * Adds listener's imports.
-     *
-     * @param curNode   currentYangNode.
-     * @param imports   import list
-     * @param operation add or remove
-     * @param classInfo class info to be added to import list
-     */
-    public static void addListnersImport(YangNode curNode, List<String> imports, boolean operation,
-                                         String classInfo) {
-        String thisImport = "";
-        if (classInfo.equals(LISTENER_SERVICE)) {
-            thisImport = getTempJavaFragement(curNode).getJavaImportData().getListenerServiceImport();
-            performOperationOnImports(imports, thisImport, operation);
-        } else {
-            thisImport = getTempJavaFragement(curNode).getJavaImportData().getListenerRegistryImport();
-            performOperationOnImports(imports, thisImport, operation);
-        }
-    }
-
-    /**
-     * Adds annotations imports.
-     *
-     * @param imports   list if imports
-     * @param operation to add or to delete
-     */
-    public static void addAnnotationsImports(List<String> imports, boolean operation) {
-        if (operation) {
-            imports.add(ACTIVATE_ANNOTATION_IMPORT);
-            imports.add(DEACTIVATE_ANNOTATION_IMPORT);
-            imports.add(COMPONENT_ANNOTATION_IMPORT);
-            imports.add(SERVICE_ANNOTATION_IMPORT);
-            imports.add(LOGGER_FACTORY_IMPORT);
-            imports.add(LOGGER_IMPORT);
-        } else {
-            imports.remove(ACTIVATE_ANNOTATION_IMPORT);
-            imports.remove(DEACTIVATE_ANNOTATION_IMPORT);
-            imports.remove(COMPONENT_ANNOTATION_IMPORT);
-            imports.remove(SERVICE_ANNOTATION_IMPORT);
-            imports.remove(LOGGER_FACTORY_IMPORT);
-            imports.remove(LOGGER_IMPORT);
-        }
-        sortImports(imports);
-    }
-
-    /**
-     * Performs given operations on import list.
-     *
-     * @param imports   list of imports
-     * @param curImport current import
-     * @param operation add or remove
-     * @return import list
-     */
-    private static List<String> performOperationOnImports(List<String> imports, String curImport,
-                                                          boolean operation) {
-        if (operation) {
-            imports.add(curImport);
-        } else {
-            imports.remove(curImport);
-        }
-        sortImports(imports);
-        return imports;
-    }
-
-    /**
-     * Returns true if AugmentationHolder class needs to be extended.
-     *
-     * @param extendsList list of classes need to be extended
-     * @return true or false
-     */
-    public static boolean isAugmentationHolderExtended(List<JavaQualifiedTypeInfo> extendsList) {
-        for (JavaQualifiedTypeInfo info : extendsList) {
-            return info.getClassInfo().equals(AUGMENTATION_HOLDER);
-        }
-        return false;
-    }
-
-    /**
-     * Returns true if AugmentedInfo class needs to be extended.
-     *
-     * @param extendsList list of classes need to be extended
-     * @return true or false
-     */
-    public static boolean isAugmentedInfoExtended(List<JavaQualifiedTypeInfo> extendsList) {
-        for (JavaQualifiedTypeInfo info : extendsList) {
-            return info.getClassInfo().equals(AUGMENTED_INFO);
-        }
-        return false;
-    }
-
-    /**
-     * Closes the file handle for temporary file.
-     *
-     * @param file        file to be closed
-     * @param toBeDeleted flag to indicate if file needs to be deleted
-     * @throws IOException when failed to close the file handle
-     */
-    public static void closeFile(File file, boolean toBeDeleted)
-            throws IOException {
-
-        if (file != null) {
-            updateFileHandle(file, null, true);
-            if (toBeDeleted) {
-                file.delete();
-            }
-        }
-    }
-
-    /**
-     * Returns sorted import list.
-     *
-     * @param imports import list
-     * @return sorted import list
-     */
-    public static List<String> sortImports(List<String> imports) {
-        sort(imports);
-        return imports;
-    }
-
-    /**
-     * Returns event enum start.
-     *
-     * @return event enum start
-     */
-    public static String getEventEnumTypeStart() {
-        return FOUR_SPACE_INDENTATION + PUBLIC + SPACE + ENUM + SPACE + TYPE + SPACE + OPEN_CURLY_BRACKET
-                + NEW_LINE;
-    }
-}

@@ -607,6 +607,11 @@ public final class UtilConstants {
     public static final String CATCH = "catch";
 
     /**
+     * Static attribute for super syntax.
+     */
+    public static final String SUPER = "super";
+
+    /**
      * Static attribute for eight space indentation.
      */
     public static final String EIGHT_SPACE_INDENTATION = FOUR_SPACE_INDENTATION + FOUR_SPACE_INDENTATION;

@@ -123,4 +123,22 @@ public final class FileSystemUtil {
             }
         }
     }
+
+    /**
+     * Closes the file handle for temporary file.
+     *
+     * @param file        file to be closed
+     * @param toBeDeleted flag to indicate if file needs to be deleted
+     * @throws IOException when failed to close the file handle
+     */
+    public static void closeFile(File file, boolean toBeDeleted)
+            throws IOException {
+
+        if (file != null) {
+            updateFileHandle(file, null, true);
+            if (toBeDeleted) {
+                file.delete();
+            }
+        }
+    }
 }

@@ -590,7 +590,7 @@ public final class JavaDocGen {
      * @param attribute attribute string
      * @return javaDocs for type constructor
      */
-    private static String generateForTypeConstructor(String attribute) {
+    public static String generateForTypeConstructor(String attribute) {
         return NEW_LINE + FOUR_SPACE_INDENTATION + JAVA_DOC_FIRST_LINE + FOUR_SPACE_INDENTATION + JAVA_DOC_CONSTRUCTOR
                 + attribute + PERIOD + NEW_LINE + FOUR_SPACE_INDENTATION + NEW_LINE_ASTERISK + FOUR_SPACE_INDENTATION
                 + JAVA_DOC_PARAM + VALUE + SPACE + VALUE + SPACE + OF + SPACE + attribute + NEW_LINE

@@ -28,11 +28,11 @@ import java.util.LinkedList;
 import java.util.List;
 import java.util.Stack;
 import java.util.regex.Pattern;
+
 import org.apache.commons.io.FileUtils;
 import org.onosproject.yangutils.translator.exception.TranslatorException;
 
 import static org.onosproject.yangutils.utils.UtilConstants.COLAN;
-import static org.onosproject.yangutils.utils.UtilConstants.COMMA;
 import static org.onosproject.yangutils.utils.UtilConstants.EMPTY_STRING;
 import static org.onosproject.yangutils.utils.UtilConstants.HASH;
 import static org.onosproject.yangutils.utils.UtilConstants.HYPHEN;
@@ -213,34 +213,16 @@ public final class YangIoUtils {
      * Removes extra char from the string.
      *
      * @param valueString   string to be trimmed
-     * @param removealStirng extra chars
+     * @param removalStirng extra chars
      * @return new string
      */
-    public static String trimAtLast(String valueString, String removealStirng) {
+    public static String trimAtLast(String valueString, String removalStirng) {
         StringBuilder stringBuilder = new StringBuilder(valueString);
-        int index = valueString.lastIndexOf(removealStirng);
+        int index = valueString.lastIndexOf(removalStirng);
+        if (index != -1) {
             stringBuilder.deleteCharAt(index);
-        return stringBuilder.toString();
-    }
-
-    /**
-     * Returns new parted string.
-     *
-     * @param partString string to be parted
-     * @return parted string
-     */
-    public static String partString(String partString) {
-        String[] strArray = partString.split(COMMA);
-        String newString = EMPTY_STRING;
-        for (int i = 0; i < strArray.length; i++) {
-            if (i % 4 != 0 || i == 0) {
-                newString = newString + strArray[i] + COMMA;
-            } else {
-                newString = newString + NEW_LINE + TWELVE_SPACE_INDENTATION
-                        + strArray[i] + COMMA;
         }
-        }
-        return trimAtLast(newString, COMMA);
+        return stringBuilder.toString();
     }
 
     /**

@@ -27,6 +27,11 @@ public final class YangPluginConfig {
     private String codeGenDir;
 
     /**
+     * Contains the code generation directory.
+     */
+    private String managerCodeGenDir;
+
+    /**
      * Contains information of naming conflicts that can be resolved.
      */
     private YangToJavaNamingConflictUtil conflictResolver;
@@ -72,4 +77,22 @@ public final class YangPluginConfig {
     public YangToJavaNamingConflictUtil getConflictResolver() {
         return conflictResolver;
     }
+
+    /**
+     * Returns manager's code generation directory.
+     *
+     * @return manager's code generation directory
+     */
+    public String getManagerCodeGenDir() {
+        return managerCodeGenDir;
+    }
+
+    /**
+     * Sets manager's code generation directory.
+     *
+     * @param moduleCodeGenDir manager's code generation directory
+     */
+    public void setManagerCodeGenDir(String moduleCodeGenDir) {
+        this.managerCodeGenDir = moduleCodeGenDir;
+    }
 }

@@ -16,16 +16,16 @@
 
 package org.onosproject.yangutils.ietfyang;
 
+import java.io.IOException;
+
 import org.apache.maven.plugin.MojoExecutionException;
 import org.junit.Test;
 import org.onosproject.yangutils.linker.impl.YangLinkerManager;
 import org.onosproject.yangutils.parser.exceptions.ParserException;
 import org.onosproject.yangutils.parser.impl.YangUtilsParserManager;
 import org.onosproject.yangutils.plugin.manager.YangUtilManager;
-import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 import org.onosproject.yangutils.utils.io.impl.YangFileScanner;
-
-import java.io.IOException;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.deleteDirectory;
 
@@ -54,6 +54,7 @@ public class IetfYangFileTest {
         String userDir = System.getProperty("user.dir");
         YangPluginConfig yangPluginConfig = new YangPluginConfig();
         yangPluginConfig.setCodeGenDir("target/ietfyang/l3vpnservice/");
+        yangPluginConfig.setManagerCodeGenDir("target/ietfyang/l3vpnservice/");
 
         utilManager.translateToJava(utilManager.getYangFileInfoSet(), yangPluginConfig);
 

@@ -20,12 +20,12 @@ import java.io.IOException;
 import java.util.ListIterator;
 
 import org.junit.Test;
-import org.onosproject.yangutils.datamodel.YangNode;
-import org.onosproject.yangutils.datamodel.YangModule;
+import org.onosproject.yangutils.datamodel.YangAtomicPath;
 import org.onosproject.yangutils.datamodel.YangAugment;
-import org.onosproject.yangutils.datamodel.YangLeaf;
-import org.onosproject.yangutils.datamodel.YangNodeIdentifier;
 import org.onosproject.yangutils.datamodel.utils.builtindatatype.YangDataTypes;
+import org.onosproject.yangutils.datamodel.YangLeaf;
+import org.onosproject.yangutils.datamodel.YangModule;
+import org.onosproject.yangutils.datamodel.YangNode;
 import org.onosproject.yangutils.datamodel.YangNodeType;
 import org.onosproject.yangutils.parser.exceptions.ParserException;
 import org.onosproject.yangutils.parser.impl.YangUtilsParserManager;
@@ -48,16 +48,16 @@ public class AugmentListenerTest {
 
         YangNode node = manager.getDataModel("src/test/resources/ValidAugmentStatement.yang");
 
-        assertThat((node instanceof YangModule), is(true));
+        assertThat(node instanceof YangModule, is(true));
         assertThat(node.getNodeType(), is(YangNodeType.MODULE_NODE));
         YangModule yangNode = (YangModule) node;
         assertThat(yangNode.getName(), is("Test"));
 
         YangAugment yangAugment = (YangAugment) yangNode.getChild();
-        ListIterator<YangNodeIdentifier> nodeIdentifierIterator = yangAugment.getTargetNode().listIterator();
-        YangNodeIdentifier yangNodeIdentifier = nodeIdentifierIterator.next();
-        assertThat(yangNodeIdentifier.getPrefix(), is("if"));
-        assertThat(yangNodeIdentifier.getName(), is("interfaces"));
+        ListIterator<YangAtomicPath> absPathIterator = yangAugment.getTargetNode().listIterator();
+        YangAtomicPath absPathIdentifier = absPathIterator.next();
+        assertThat(absPathIdentifier.getNodeIdentifier().getPrefix(), is("if"));
+        assertThat(absPathIdentifier.getNodeIdentifier().getName(), is("interfaces"));
 
         ListIterator<YangLeaf> leafIterator = yangAugment.getListOfLeaf().listIterator();
         YangLeaf leafInfo = leafIterator.next();

+/*
+ * Copyright 2016-present Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.yangutils.plugin.manager;
+
+import java.io.IOException;
+
+import org.apache.maven.plugin.MojoExecutionException;
+import org.junit.Test;
+import org.onosproject.yangutils.parser.exceptions.ParserException;
+import org.onosproject.yangutils.utils.io.impl.YangFileScanner;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
+
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.deleteDirectory;
+
+/**
+ * Unit test case for augment translator.
+ */
+public class AugmentTranslatorTest {
+
+    private final YangUtilManager utilManager = new YangUtilManager();
+
+    /**
+     * Checks augment translation should not result in any exception.
+     *
+     * @throws MojoExecutionException
+     */
+    @Test
+    public void processAugmentTranslator() throws IOException, ParserException, MojoExecutionException {
+
+        String searchDir = "src/test/resources/augmentTranslator";
+        utilManager.createYangFileInfoSet(YangFileScanner.getYangFiles(searchDir));
+        utilManager.parseYangFileInfoSet();
+        utilManager.createYangNodeSet();
+        utilManager.resolveDependenciesUsingLinker();
+
+        YangPluginConfig yangPluginConfig = new YangPluginConfig();
+        yangPluginConfig.setCodeGenDir("target/augmentTranslator/");
+        yangPluginConfig.setManagerCodeGenDir("target/augmentTranslator/");
+        utilManager.translateToJava(utilManager.getYangFileInfoSet(), yangPluginConfig);
+
+        deleteDirectory("target/augmentTranslator/");
+    }
+
+}

@@ -44,6 +44,7 @@ public final class ChoiceCaseTranslatorTest {
 
         YangPluginConfig yangPluginConfig = new YangPluginConfig();
         yangPluginConfig.setCodeGenDir("target/ChoiceCaseTestGenFile/");
+        yangPluginConfig.setManagerCodeGenDir("target/ChoiceCaseTestGenFile/");
 
         generateJavaCode(node, yangPluginConfig);
 

@@ -45,6 +45,7 @@ public final class EnumTranslatorTest {
 
         YangPluginConfig yangPluginConfig = new YangPluginConfig();
         yangPluginConfig.setCodeGenDir("target/EnumTestGenFile/");
+        yangPluginConfig.setManagerCodeGenDir("target/EnumTestGenFile/");
 
         generateJavaCode(node, yangPluginConfig);
 

@@ -19,6 +19,7 @@ package org.onosproject.yangutils.plugin.manager;
 import java.io.IOException;
 import java.util.Iterator;
 import java.util.ListIterator;
+
 import org.apache.maven.plugin.MojoExecutionException;
 import org.junit.Rule;
 import org.junit.Test;
@@ -171,7 +172,7 @@ public class InterFileLinkingTest {
         }
 
         // Check whether the data model tree returned is of type module.
-        assertThat((selfNode instanceof YangModule), is(true));
+        assertThat(selfNode instanceof YangModule, is(true));
 
         // Check whether the node type is set properly to module.
         assertThat(selfNode.getNodeType(), is(YangNodeType.MODULE_NODE));
@@ -184,7 +185,7 @@ public class InterFileLinkingTest {
         YangLeaf leafInfo;
 
         // Check whether grouping is the sibling of module's child.
-        assertThat((refNode.getChild() instanceof YangGrouping), is(true));
+        assertThat(refNode.getChild() instanceof YangGrouping, is(true));
 
         YangGrouping grouping = (YangGrouping) refNode.getChild();
         leafIterator = grouping.getListOfLeaf().listIterator();
@@ -196,7 +197,7 @@ public class InterFileLinkingTest {
         assertThat(leafInfo.getDataType().getDataType(), is(YangDataTypes.STRING));
 
         // Check whether uses is module's child.
-        assertThat((yangNode.getChild() instanceof YangUses), is(true));
+        assertThat(yangNode.getChild() instanceof YangUses, is(true));
         YangUses uses = (YangUses) yangNode.getChild();
 
         // Check whether uses get resolved.
@@ -317,7 +318,7 @@ public class InterFileLinkingTest {
         }
 
         // Check whether the data model tree returned is of type module.
-        assertThat((selfNode instanceof YangModule), is(true));
+        assertThat(selfNode instanceof YangModule, is(true));
 
         // Check whether the node type is set properly to module.
         assertThat(selfNode.getNodeType(), is(YangNodeType.MODULE_NODE));
@@ -330,7 +331,7 @@ public class InterFileLinkingTest {
         YangLeaf leafInfo;
 
         // Check whether grouping is the sibling of module's child.
-        assertThat((refNode.getChild() instanceof YangGrouping), is(true));
+        assertThat(refNode.getChild() instanceof YangGrouping, is(true));
 
         YangGrouping grouping = (YangGrouping) refNode.getChild();
         leafIterator = grouping.getListOfLeaf().listIterator();
@@ -342,7 +343,7 @@ public class InterFileLinkingTest {
         assertThat(leafInfo.getDataType().getDataType(), is(YangDataTypes.STRING));
 
         // Check whether uses is module's child.
-        assertThat((yangNode.getChild() instanceof YangUses), is(true));
+        assertThat(yangNode.getChild() instanceof YangUses, is(true));
         YangUses uses = (YangUses) yangNode.getChild();
 
         // Check whether uses get resolved.
@@ -637,13 +638,13 @@ public class InterFileLinkingTest {
         utilManager.parseYangFileInfoSet();
         utilManager.resolveDependenciesUsingLinker();
 
-        String userDir = System.getProperty("user.dir");
         YangPluginConfig yangPluginConfig = new YangPluginConfig();
         yangPluginConfig.setCodeGenDir("target/interfilewithusesreferringtype/");
+        yangPluginConfig.setManagerCodeGenDir("target/interfilewithusesreferringtype/");
 
         utilManager.translateToJava(utilManager.getYangFileInfoSet(), yangPluginConfig);
 
-        deleteDirectory(userDir + "/target/interfilewithusesreferringtype/");
+        deleteDirectory("target/interfilewithusesreferringtype/");
 
     }
 
@@ -659,17 +660,16 @@ public class InterFileLinkingTest {
         utilManager.parseYangFileInfoSet();
         utilManager.resolveDependenciesUsingLinker();
 
-        String userDir = System.getProperty("user.dir");
         YangPluginConfig yangPluginConfig = new YangPluginConfig();
         yangPluginConfig.setCodeGenDir("target/file1UsesFile2TypeDefFile3Type/");
+        yangPluginConfig.setManagerCodeGenDir("target/file1UsesFile2TypeDefFile3Type/");
 
         utilManager.translateToJava(utilManager.getYangFileInfoSet(), yangPluginConfig);
 
-        deleteDirectory(userDir + "/target/file1UsesFile2TypeDefFile3Type/");
+        deleteDirectory("target/file1UsesFile2TypeDefFile3Type/");
 
     }
 
-
     /**
      * Checks hierarchical intra with inter file type linking.
      */
@@ -682,17 +682,16 @@ public class InterFileLinkingTest {
         utilManager.parseYangFileInfoSet();
         utilManager.resolveDependenciesUsingLinker();
 
-        String userDir = System.getProperty("user.dir");
         YangPluginConfig yangPluginConfig = new YangPluginConfig();
         yangPluginConfig.setCodeGenDir("target/interfileietf/");
+        yangPluginConfig.setManagerCodeGenDir("target/interfileietf/");
 
         utilManager.translateToJava(utilManager.getYangFileInfoSet(), yangPluginConfig);
 
-        deleteDirectory(userDir + "/target/interfileietf/");
+        deleteDirectory("target/interfileietf/");
 
     }
 
-
     /**
      * Checks hierarchical intra with inter file type linking.
      */
@@ -705,17 +704,16 @@ public class InterFileLinkingTest {
         utilManager.parseYangFileInfoSet();
         utilManager.resolveDependenciesUsingLinker();
 
-        String userDir = System.getProperty("user.dir");
         YangPluginConfig yangPluginConfig = new YangPluginConfig();
         yangPluginConfig.setCodeGenDir("target/usesInContainer/");
+        yangPluginConfig.setManagerCodeGenDir("target/usesInContainer/");
 
         utilManager.translateToJava(utilManager.getYangFileInfoSet(), yangPluginConfig);
 
-        deleteDirectory(userDir + "/target/usesInContainer/");
+        deleteDirectory("target/usesInContainer/");
 
     }
 
-
     /**
      * Checks hierarchical intra with inter file type linking.
      */
@@ -728,13 +726,13 @@ public class InterFileLinkingTest {
         utilManager.parseYangFileInfoSet();
         utilManager.resolveDependenciesUsingLinker();
 
-        String userDir = System.getProperty("user.dir");
         YangPluginConfig yangPluginConfig = new YangPluginConfig();
         yangPluginConfig.setCodeGenDir("target/groupingNodeSameAsModule/");
+        yangPluginConfig.setManagerCodeGenDir("target/groupingNodeSameAsModule/");
 
         utilManager.translateToJava(utilManager.getYangFileInfoSet(), yangPluginConfig);
 
-        deleteDirectory(userDir + "/target/groupingNodeSameAsModule/");
+        deleteDirectory("target/groupingNodeSameAsModule/");
 
     }
 
@@ -846,7 +844,7 @@ public class InterFileLinkingTest {
 
         thrown.expect(LinkerException.class);
         thrown.expectMessage(
-                "YANG file error: Unable to find base leaf/leaf-list for given leafref");
+                "YANG file error: Unable to find base leaf/leaf-list for given leafref networks");
         String searchDir = "src/test/resources/interfileleafrefwithinvaliddestinationnode";
         utilManager.createYangFileInfoSet(YangFileScanner.getYangFiles(searchDir));
         utilManager.parseYangFileInfoSet();

@@ -44,7 +44,7 @@ import static org.hamcrest.core.Is.is;
 import static org.onosproject.yangutils.datamodel.utils.builtindatatype.YangDataTypes.DERIVED;
 import static org.onosproject.yangutils.datamodel.utils.builtindatatype.YangDataTypes.STRING;
 import static org.onosproject.yangutils.datamodel.utils.ResolvableStatus.RESOLVED;
-import static org.onosproject.yangutils.plugin.manager.YangPluginUtils.deSerializeDataModel;
+import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.deSerializeDataModel;
 import static org.onosproject.yangutils.plugin.manager.YangPluginUtils.parseJarFile;
 import static org.onosproject.yangutils.plugin.manager.YangPluginUtils.serializeDataModel;
 import static org.onosproject.yangutils.utils.UtilConstants.SLASH;
@@ -189,6 +189,7 @@ public class InterJarLinkerTest {
 
         YangPluginConfig yangPluginConfig = new YangPluginConfig();
         yangPluginConfig.setCodeGenDir(TARGET);
+        yangPluginConfig.setManagerCodeGenDir(TARGET);
 
         utilManager.translateToJava(utilManager.getYangFileInfoSet(), yangPluginConfig);
 
@@ -205,7 +206,7 @@ public class InterJarLinkerTest {
         File folder = new File(System.getProperty("user.dir") + SLASH + FLOW_CLASSIFIER_FOLDER);
         File file = new File(System.getProperty("user.dir") + SLASH + FLOW_CLASSIFIER_MANAGER);
         assertThat(true, is(folder.exists()));
-        assertThat(true, is(file.exists()));
+        assertThat(false, is(file.exists()));
     }
 
     /**

@@ -16,11 +16,17 @@
 
 package org.onosproject.yangutils.plugin.manager;
 
+import java.io.IOException;
+import java.util.Iterator;
+import java.util.List;
+import java.util.ListIterator;
+
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.rules.ExpectedException;
 import org.onosproject.yangutils.datamodel.YangAtomicPath;
 import org.onosproject.yangutils.datamodel.YangContainer;
+import org.onosproject.yangutils.datamodel.utils.builtindatatype.YangDataTypes;
 import org.onosproject.yangutils.datamodel.YangInput;
 import org.onosproject.yangutils.datamodel.YangLeaf;
 import org.onosproject.yangutils.datamodel.YangLeafList;
@@ -34,16 +40,10 @@ import org.onosproject.yangutils.datamodel.YangPathOperator;
 import org.onosproject.yangutils.datamodel.YangPathPredicate;
 import org.onosproject.yangutils.datamodel.YangRelativePath;
 import org.onosproject.yangutils.datamodel.utils.ResolvableStatus;
-import org.onosproject.yangutils.datamodel.utils.builtindatatype.YangDataTypes;
 import org.onosproject.yangutils.linker.exceptions.LinkerException;
 import org.onosproject.yangutils.parser.exceptions.ParserException;
 import org.onosproject.yangutils.parser.impl.YangUtilsParserManager;
 
-import java.io.IOException;
-import java.util.Iterator;
-import java.util.List;
-import java.util.ListIterator;
-
 import static org.hamcrest.MatcherAssert.assertThat;
 import static org.hamcrest.core.Is.is;
 import static org.hamcrest.core.IsNull.nullValue;

+/*
+ * Copyright 2016-present Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.yangutils.plugin.manager;
+
+import java.io.File;
+import java.io.IOException;
+
+import org.apache.maven.plugin.MojoExecutionException;
+import org.junit.Test;
+import org.onosproject.yangutils.parser.exceptions.ParserException;
+import org.onosproject.yangutils.utils.io.impl.YangFileScanner;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
+
+import static org.hamcrest.core.Is.is;
+import static org.junit.Assert.assertThat;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.deleteDirectory;
+
+/**
+ * Unit test case to test code generation for root nodes.
+ */
+public class ManagerCodeGeneratorTest {
+
+    private final YangUtilManager utilManager = new YangUtilManager();
+
+    /**
+     * Checks manager translation should not result in any exception.
+     *
+     * @throws MojoExecutionException
+     */
+    @Test
+    public void processManagerTranslator() throws IOException, ParserException, MojoExecutionException {
+
+        String searchDir = "src/test/resources/manager";
+        utilManager.createYangFileInfoSet(YangFileScanner.getYangFiles(searchDir));
+        utilManager.parseYangFileInfoSet();
+        utilManager.createYangNodeSet();
+        utilManager.resolveDependenciesUsingLinker();
+
+        YangPluginConfig yangPluginConfig = new YangPluginConfig();
+        yangPluginConfig.setCodeGenDir("target/manager/");
+        yangPluginConfig.setManagerCodeGenDir("target/manager/");
+
+        utilManager.translateToJava(utilManager.getYangFileInfoSet(), yangPluginConfig);
+        String file1 = "target/manager/org/onosproject/yang/gen/v1/test5/test/rev20160704/Test5Manager.java";
+        String file2 = "target/manager/org/onosproject/yang/gen/v1/test5/test/rev20160704/Test6Manager.java";
+        String file3 = "target/manager/org/onosproject/yang/gen/v1/test5/test/rev20160704/Test7Manager.java";
+        File manager = new File(file1);
+        assertThat(false, is(manager.exists()));
+
+        File manager2 = new File(file2);
+        assertThat(false, is(manager2.exists()));
+
+        File manager3 = new File(file3);
+        assertThat(true, is(manager3.exists()));
+
+        deleteDirectory("target/manager/");
+    }
+
+    /**
+     * Checks manager translation in different package should not result in any exception.
+     *
+     * @throws MojoExecutionException
+     */
+    @Test
+    public void processManagerInDifferentPackageTranslator() throws IOException, ParserException,
+            MojoExecutionException {
+
+        String searchDir = "src/test/resources/manager";
+        utilManager.createYangFileInfoSet(YangFileScanner.getYangFiles(searchDir));
+        utilManager.parseYangFileInfoSet();
+        utilManager.createYangNodeSet();
+        utilManager.resolveDependenciesUsingLinker();
+
+        YangPluginConfig yangPluginConfig = new YangPluginConfig();
+        yangPluginConfig.setCodeGenDir("target/manager/");
+        yangPluginConfig.setManagerCodeGenDir("target/manager1/");
+
+        utilManager.translateToJava(utilManager.getYangFileInfoSet(), yangPluginConfig);
+        String file3 = "target/manager1/org/onosproject/yang/gen/v1/test5/test/rev20160704/Test7Manager.java";
+
+        File manager3 = new File(file3);
+        assertThat(true, is(manager3.exists()));
+
+        deleteDirectory("target/manager/");
+        deleteDirectory("target/manager1/");
+    }
+}

@@ -38,13 +38,14 @@ public final class NotificationTranslatorTest {
      * Checks union translation should not result in any exception.
      */
     @Test
-    public void processUnionTranslator()
+    public void processNotificationTranslator()
             throws IOException, ParserException {
 
         YangNode node = manager.getDataModel("src/test/resources/NotificationTest.yang");
 
         YangPluginConfig yangPluginConfig = new YangPluginConfig();
         yangPluginConfig.setCodeGenDir("target/NotificationTest/");
+        yangPluginConfig.setManagerCodeGenDir("target/NotificationTest1/");
 
         generateJavaCode(node, yangPluginConfig);
 

@@ -45,6 +45,7 @@ public final class RpcTranslatorTest {
 
         YangPluginConfig yangPluginConfig = new YangPluginConfig();
         yangPluginConfig.setCodeGenDir("target/RpcTestGenFile/");
+        yangPluginConfig.setManagerCodeGenDir("target/RpcTestGenFile/");
 
         generateJavaCode(node, yangPluginConfig);
 

@@ -45,6 +45,7 @@ public final class UnionTranslatorTest {
 
         YangPluginConfig yangPluginConfig = new YangPluginConfig();
         yangPluginConfig.setCodeGenDir("target/UnionTestGenFile/");
+        yangPluginConfig.setManagerCodeGenDir("target/UnionTestGenFile/");
 
         generateJavaCode(node, yangPluginConfig);
 

+/*
+ * Copyright 2016-present Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package org.onosproject.yangutils.plugin.manager;
 
 import java.io.File;
@@ -11,7 +27,7 @@ import org.sonatype.plexus.build.incremental.DefaultBuildContext;
 import static org.onosproject.yangutils.plugin.manager.YangPluginUtils.addToCompilationRoot;
 
 /**
- * Created by root1 on 16/6/16.
+ * Unit test case for YANG plugin utils.
  */
 public class YangPluginUtilsTest {
 

+/*
+ * Copyright 2016-present Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+
+package org.onosproject.yangutils.plugin.manager;
+
+import java.io.IOException;
+import java.util.List;
+
+import org.apache.maven.plugin.MojoExecutionException;
+import org.junit.Test;
+import org.onosproject.yangutils.datamodel.ResolvableType;
+import org.onosproject.yangutils.datamodel.YangAugment;
+import org.onosproject.yangutils.datamodel.YangNode;
+import org.onosproject.yangutils.datamodel.YangReferenceResolver;
+import org.onosproject.yangutils.datamodel.YangResolutionInfo;
+import org.onosproject.yangutils.linker.impl.YangLinkerManager;
+import org.onosproject.yangutils.linker.impl.YangXpathLinker;
+import org.onosproject.yangutils.utils.io.impl.YangFileScanner;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.core.Is.is;
+
+/**
+ * Unit test cases for x-path linker.
+ */
+public class YangXpathLinkerTest {
+
+    private YangUtilManager utilManager = new YangUtilManager();
+    private YangXpathLinker linker = new YangXpathLinker();
+    private YangLinkerManager linkerManager = new YangLinkerManager();
+    private static final String INTRA_FILE_PATH = "src/test/resources/xPathLinker/IntraFile/";
+    private static final String INTER_FILE_PATH = "src/test/resources/xPathLinker/InterFile/";
+
+    /**
+     * Unit test case for intra file linking for single level container.
+     *
+     * @throws IOException when fails to do IO operations
+     * @throws MojoExecutionException
+     */
+    @Test
+    public void processIntraFileLinkingSingleLevel() throws IOException, MojoExecutionException {
+
+        utilManager.createYangFileInfoSet(YangFileScanner.getYangFiles(INTRA_FILE_PATH + "IntraSingle/"));
+        utilManager.parseYangFileInfoSet();
+        utilManager.createYangNodeSet();
+        utilManager.resolveDependenciesUsingLinker();
+
+        YangNode targetNode = null;
+        String targetNodeName = null;
+
+        for (YangNode node : utilManager.getYangNodeSet()) {
+            YangReferenceResolver ref = (YangReferenceResolver) node;
+            List<YangResolutionInfo> infos = ref.getUnresolvedResolutionList(ResolvableType.YANG_AUGMENT);
+            YangResolutionInfo info = infos.get(0);
+
+            YangAugment augment = (YangAugment) info.getEntityToResolveInfo().getEntityToResolve();
+            targetNodeName = augment.getTargetNode().get(augment.getTargetNode().size() - 1).getNodeIdentifier()
+                    .getName();
+            targetNode = augment.getAugmentedNode();
+
+        }
+
+        assertThat(true, is(targetNode.getName().equals(targetNodeName)));
+    }
+
+    /**
+     * Unit test case for intra file linking for multiple level container.
+     *
+     * @throws IOException when fails to do IO operations
+     */
+    @Test
+    public void processIntraFileLinkingMultipleLevel() throws IOException {
+
+        utilManager.createYangFileInfoSet(YangFileScanner.getYangFiles(INTRA_FILE_PATH + "IntraMulti/"));
+        utilManager.parseYangFileInfoSet();
+        utilManager.createYangNodeSet();
+
+        YangNode targetNode = null;
+        String targetNodeName = null;
+
+        for (YangNode node : utilManager.getYangNodeSet()) {
+            List<YangAugment> augments = linker.getListOfYangAugment(node);
+
+            for (YangAugment augment : augments) {
+                targetNodeName = augment.getTargetNode().get(augment.getTargetNode().size() - 1).getNodeIdentifier()
+                        .getName();
+                targetNode = linker.processAugmentXpathLinking(augment.getTargetNode(), node);
+            }
+        }
+
+        assertThat(true, is(targetNode.getName().equals(targetNodeName)));
+    }
+
+    /**
+     * Unit test case for intra file linking for single level augment.
+     *
+     * @throws IOException when fails to do IO operations
+     */
+    @Test
+    public void processIntraFileLinkingInAugmentSingleLevel() throws IOException {
+        utilManager.createYangFileInfoSet(YangFileScanner.getYangFiles(INTRA_FILE_PATH + "IntraSingleAugment/"));
+        utilManager.parseYangFileInfoSet();
+        utilManager.createYangNodeSet();
+
+        YangNode targetNode = null;
+        String targetNodeName = null;
+
+        for (YangNode node : utilManager.getYangNodeSet()) {
+            List<YangAugment> augments = linker.getListOfYangAugment(node);
+
+            for (YangAugment augment : augments) {
+                targetNodeName = augment.getTargetNode().get(augment.getTargetNode().size() - 1).getNodeIdentifier()
+                        .getName();
+                targetNode = linker.processAugmentXpathLinking(augment.getTargetNode(), node);
+            }
+        }
+
+        assertThat(true, is(targetNode.getName().equals(targetNodeName)));
+    }
+
+    /**
+     * Unit test case for intra file linking for multiple level augment.
+     *
+     * @throws IOException when fails to do IO operations
+     */
+    @Test
+    public void processIntraFileLinkingInAugmentMultiLevel() throws IOException {
+        utilManager.createYangFileInfoSet(YangFileScanner.getYangFiles(INTRA_FILE_PATH + "IntraMultiAugment/"));
+        utilManager.parseYangFileInfoSet();
+        utilManager.createYangNodeSet();
+        linkerManager.createYangNodeSet(utilManager.getYangNodeSet());
+        linkerManager.addRefToYangFilesImportList(utilManager.getYangNodeSet());
+        linkerManager.addRefToYangFilesIncludeList(utilManager.getYangNodeSet());
+        linkerManager.processInterFileLinking(utilManager.getYangNodeSet());
+
+        YangNode targetNode = null;
+        String targetNodeName = null;
+
+        for (YangNode node : utilManager.getYangNodeSet()) {
+            List<YangAugment> augments = linker.getListOfYangAugment(node);
+
+            for (YangAugment augment : augments) {
+                targetNodeName = augment.getTargetNode().get(augment.getTargetNode().size() - 1).getNodeIdentifier()
+                        .getName();
+                targetNode = linker.processAugmentXpathLinking(augment.getTargetNode(), node);
+            }
+        }
+
+        assertThat(true, is(targetNode.getName().equals(targetNodeName)));
+
+    }
+
+    /**
+     * Unit test case for intra file linking for multiple level submodule.
+     *
+     * @throws IOException when fails to do IO operations
+     */
+    @Test
+    public void processIntraFileLinkingInSubModuleSingleLevel() throws IOException {
+        utilManager.createYangFileInfoSet(YangFileScanner.getYangFiles(INTRA_FILE_PATH + "IntraSingleSubModule/"));
+        utilManager.parseYangFileInfoSet();
+        utilManager.createYangNodeSet();
+        linkerManager.createYangNodeSet(utilManager.getYangNodeSet());
+        linkerManager.linkSubModulesToParentModule(utilManager.getYangNodeSet());
+        linkerManager.addRefToYangFilesIncludeList(utilManager.getYangNodeSet());
+
+        YangNode targetNode = null;
+        String targetNodeName = null;
+
+        for (YangNode node : utilManager.getYangNodeSet()) {
+            List<YangAugment> augments = linker.getListOfYangAugment(node);
+
+            for (YangAugment augment : augments) {
+                targetNodeName = augment.getTargetNode().get(augment.getTargetNode().size() - 1).getNodeIdentifier()
+                        .getName();
+                targetNode = linker.processAugmentXpathLinking(augment.getTargetNode(), node);
+            }
+        }
+
+        assertThat(true, is(targetNode.getName().equals(targetNodeName)));
+    }
+
+    /**
+     * Unit test case for intra file linking for multiple level submodule.
+     *
+     * @throws IOException when fails to do IO operations
+     */
+    @Test
+    public void processIntraFileLinkingInSubModuleMultiLevel() throws IOException {
+
+        utilManager.createYangFileInfoSet(YangFileScanner.getYangFiles(INTRA_FILE_PATH + "IntraMultiSubModule/"));
+        utilManager.parseYangFileInfoSet();
+        utilManager.createYangNodeSet();
+        linkerManager.createYangNodeSet(utilManager.getYangNodeSet());
+        linkerManager.linkSubModulesToParentModule(utilManager.getYangNodeSet());
+        linkerManager.addRefToYangFilesIncludeList(utilManager.getYangNodeSet());
+
+        YangNode targetNode = null;
+        String targetNodeName = null;
+
+        for (YangNode node : utilManager.getYangNodeSet()) {
+            List<YangAugment> augments = linker.getListOfYangAugment(node);
+
+            for (YangAugment augment : augments) {
+                targetNodeName = augment.getTargetNode().get(augment.getTargetNode().size() - 1).getNodeIdentifier()
+                        .getName();
+                targetNode = linker.processAugmentXpathLinking(augment.getTargetNode(), node);
+            }
+        }
+
+        assertThat(true, is(targetNode.getName().equals(targetNodeName)));
+    }
+
+    /**
+     * Unit test case for intra file linking for single level uses.
+     *
+     * @throws IOException when fails to do IO operations
+     */
+    @Test
+    public void processIntraFileLinkingInUsesSingleLevel() throws IOException {
+
+        utilManager.createYangFileInfoSet(YangFileScanner.getYangFiles(INTRA_FILE_PATH + "IntraSingleUses/"));
+        utilManager.parseYangFileInfoSet();
+        utilManager.createYangNodeSet();
+        linkerManager.createYangNodeSet(utilManager.getYangNodeSet());
+        linkerManager.processInterFileLinking(utilManager.getYangNodeSet());
+
+        YangNode targetNode = null;
+        String targetNodeName = null;
+
+        for (YangNode node : utilManager.getYangNodeSet()) {
+            List<YangAugment> augments = linker.getListOfYangAugment(node);
+
+            for (YangAugment augment : augments) {
+                targetNodeName = augment.getTargetNode().get(augment.getTargetNode().size() - 1).getNodeIdentifier()
+                        .getName();
+                targetNode = linker.processAugmentXpathLinking(augment.getTargetNode(), node);
+            }
+        }
+
+        assertThat(true, is(targetNode.getName().equals(targetNodeName)));
+    }
+
+    /**
+     * Unit test case for intra file linking for multi level uses.
+     *
+     * @throws IOException when fails to do IO operations
+     */
+    @Test
+    public void processIntraFileLinkingInUsesMultiLevel() throws IOException {
+
+        utilManager.createYangFileInfoSet(YangFileScanner.getYangFiles(INTRA_FILE_PATH + "IntraMultiUses/"));
+        utilManager.parseYangFileInfoSet();
+        utilManager.createYangNodeSet();
+        linkerManager.createYangNodeSet(utilManager.getYangNodeSet());
+        linkerManager.processInterFileLinking(utilManager.getYangNodeSet());
+
+        YangNode targetNode = null;
+        String targetNodeName = null;
+
+        for (YangNode node : utilManager.getYangNodeSet()) {
+            List<YangAugment> augments = linker.getListOfYangAugment(node);
+
+            for (YangAugment augment : augments) {
+                targetNodeName = augment.getTargetNode().get(augment.getTargetNode().size() - 1).getNodeIdentifier()
+                        .getName();
+                targetNode = linker.processAugmentXpathLinking(augment.getTargetNode(), node);
+            }
+        }
+
+        assertThat(true, is(targetNode.getName().equals(targetNodeName)));
+    }
+
+    /**
+     * Unit test case for inter file linking for single level container.
+     *
+     * @throws IOException when fails to do IO operations
+     */
+    @Test
+    public void processInterFileLinkingSingleLevel() throws IOException {
+
+        utilManager.createYangFileInfoSet(YangFileScanner.getYangFiles(INTER_FILE_PATH + "InterSingle/"));
+        utilManager.parseYangFileInfoSet();
+        utilManager.createYangNodeSet();
+        linkerManager.createYangNodeSet(utilManager.getYangNodeSet());
+        linkerManager.addRefToYangFilesImportList(utilManager.getYangNodeSet());
+
+        YangNode targetNode = null;
+        String targetNodeName = null;
+
+        for (YangNode node : utilManager.getYangNodeSet()) {
+            List<YangAugment> augments = linker.getListOfYangAugment(node);
+
+            for (YangAugment augment : augments) {
+                targetNodeName = augment.getTargetNode().get(augment.getTargetNode().size() - 1).getNodeIdentifier()
+                        .getName();
+                targetNode = linker.processAugmentXpathLinking(augment.getTargetNode(), node);
+            }
+        }
+
+        assertThat(true, is(targetNode.getName().equals(targetNodeName)));
+    }
+
+    /**
+     * Unit test case for inter file linking for multi level container.
+     *
+     * @throws IOException when fails to do IO operations
+     */
+    @Test
+    public void processInterFileLinkingMultipleLevel() throws IOException {
+
+        utilManager.createYangFileInfoSet(YangFileScanner.getYangFiles(INTER_FILE_PATH + "InterMulti/"));
+        utilManager.parseYangFileInfoSet();
+        utilManager.createYangNodeSet();
+        linkerManager.createYangNodeSet(utilManager.getYangNodeSet());
+        linkerManager.addRefToYangFilesImportList(utilManager.getYangNodeSet());
+
+        YangNode targetNode = null;
+        String targetNodeName = null;
+
+        for (YangNode node : utilManager.getYangNodeSet()) {
+            List<YangAugment> augments = linker.getListOfYangAugment(node);
+
+            for (YangAugment augment : augments) {
+                targetNodeName = augment.getTargetNode().get(augment.getTargetNode().size() - 1).getNodeIdentifier()
+                        .getName();
+                targetNode = linker.processAugmentXpathLinking(augment.getTargetNode(), node);
+            }
+        }
+
+        assertThat(true, is(targetNode.getName().equals(targetNodeName)));
+    }
+
+    /**
+     * Unit test case for inter file linking for single level augment.
+     *
+     * @throws IOException when fails to do IO operations
+     */
+    @Test
+    public void processInterFileLinkingInAugmentSingleLevel() throws IOException {
+
+        utilManager.createYangFileInfoSet(YangFileScanner.getYangFiles(INTER_FILE_PATH + "InterSingleAugment/"));
+        utilManager.parseYangFileInfoSet();
+        utilManager.createYangNodeSet();
+        linkerManager.createYangNodeSet(utilManager.getYangNodeSet());
+        linkerManager.addRefToYangFilesImportList(utilManager.getYangNodeSet());
+
+        YangNode targetNode = null;
+        String targetNodeName = null;
+
+        for (YangNode node : utilManager.getYangNodeSet()) {
+            List<YangAugment> augments = linker.getListOfYangAugment(node);
+
+            for (YangAugment augment : augments) {
+                targetNodeName = augment.getTargetNode().get(augment.getTargetNode().size() - 1).getNodeIdentifier()
+                        .getName();
+                targetNode = linker.processAugmentXpathLinking(augment.getTargetNode(), node);
+            }
+        }
+
+        assertThat(true, is(targetNode.getName().equals(targetNodeName)));
+    }
+
+    /**
+     * Unit test case for inter file linking for multi level augment.
+     *
+     * @throws IOException when fails to do IO operations
+     */
+    @Test
+    public void processInterFileLinkingInAugmentMultiLevel() throws IOException {
+
+        utilManager.createYangFileInfoSet(YangFileScanner.getYangFiles(INTER_FILE_PATH + "InterMultiAugment/"));
+        utilManager.parseYangFileInfoSet();
+        utilManager.createYangNodeSet();
+        linkerManager.createYangNodeSet(utilManager.getYangNodeSet());
+        linkerManager.addRefToYangFilesImportList(utilManager.getYangNodeSet());
+
+        YangNode targetNode = null;
+        String targetNodeName = null;
+
+        for (YangNode node : utilManager.getYangNodeSet()) {
+            List<YangAugment> augments = linker.getListOfYangAugment(node);
+
+            for (YangAugment augment : augments) {
+                targetNodeName = augment.getTargetNode().get(augment.getTargetNode().size() - 1).getNodeIdentifier()
+                        .getName();
+                targetNode = linker.processAugmentXpathLinking(augment.getTargetNode(), node);
+            }
+        }
+
+        assertThat(true, is(targetNode.getName().equals(targetNodeName)));
+    }
+
+    /**
+     * Unit test case for multipler inter file linking for single level augment.
+     *
+     * @throws IOException when fails to do IO operations
+     */
+    @Test
+    public void processMultiInterFileLinkingInAugmentSingleLevel() throws IOException {
+
+        utilManager.createYangFileInfoSet(YangFileScanner.getYangFiles(INTER_FILE_PATH + "InterMultiFileAugment/"));
+        utilManager.parseYangFileInfoSet();
+        utilManager.createYangNodeSet();
+        linkerManager.createYangNodeSet(utilManager.getYangNodeSet());
+        linkerManager.addRefToYangFilesImportList(utilManager.getYangNodeSet());
+
+        YangNode targetNode = null;
+        String targetNodeName = null;
+
+        for (YangNode node : utilManager.getYangNodeSet()) {
+            List<YangAugment> augments = linker.getListOfYangAugment(node);
+
+            for (YangAugment augment : augments) {
+                targetNodeName = augment.getTargetNode().get(augment.getTargetNode().size() - 1).getNodeIdentifier()
+                        .getName();
+                targetNode = linker.processAugmentXpathLinking(augment.getTargetNode(), node);
+            }
+        }
+
+        assertThat(true, is(targetNode.getName().equals(targetNodeName)));
+    }
+
+    /**
+     * Unit test case for multiple inter file linking for multi level augment.
+     *
+     * @throws IOException when fails to do IO operations
+     */
+    @Test
+    public void processMultiInterFileLinkingInAugmentMultiLevel() throws IOException {
+
+        utilManager
+                .createYangFileInfoSet(YangFileScanner.getYangFiles(INTER_FILE_PATH + "InterMultiFileAugmentMulti/"));
+        utilManager.parseYangFileInfoSet();
+        utilManager.createYangNodeSet();
+        linkerManager.createYangNodeSet(utilManager.getYangNodeSet());
+        linkerManager.addRefToYangFilesImportList(utilManager.getYangNodeSet());
+
+        YangNode targetNode = null;
+        String targetNodeName = null;
+
+        for (YangNode node : utilManager.getYangNodeSet()) {
+            List<YangAugment> augments = linker.getListOfYangAugment(node);
+
+            for (YangAugment augment : augments) {
+                targetNodeName = augment.getTargetNode().get(augment.getTargetNode().size() - 1).getNodeIdentifier()
+                        .getName();
+                targetNode = linker.processAugmentXpathLinking(augment.getTargetNode(), node);
+            }
+        }
+
+        assertThat(true, is(targetNode.getName().equals(targetNodeName)));
+    }
+
+    /**
+     * Unit test case for inter file linking for single level submodule.
+     *
+     * @throws IOException when fails to do IO operations
+     */
+    @Test
+    public void processInterFileLinkingInSubModuleSingleLevel() throws IOException {
+
+        utilManager.createYangFileInfoSet(YangFileScanner.getYangFiles(INTER_FILE_PATH + "InterSingleSubModule/"));
+        utilManager.parseYangFileInfoSet();
+        utilManager.createYangNodeSet();
+        linkerManager.createYangNodeSet(utilManager.getYangNodeSet());
+        linkerManager.linkSubModulesToParentModule(utilManager.getYangNodeSet());
+        linkerManager.addRefToYangFilesImportList(utilManager.getYangNodeSet());
+        linkerManager.addRefToYangFilesIncludeList(utilManager.getYangNodeSet());
+
+        YangNode targetNode = null;
+        String targetNodeName = null;
+
+        for (YangNode node : utilManager.getYangNodeSet()) {
+            List<YangAugment> augments = linker.getListOfYangAugment(node);
+
+            for (YangAugment augment : augments) {
+                targetNodeName = augment.getTargetNode().get(augment.getTargetNode().size() - 1).getNodeIdentifier()
+                        .getName();
+                targetNode = linker.processAugmentXpathLinking(augment.getTargetNode(), node);
+            }
+        }
+
+        assertThat(true, is(targetNode.getName().equals(targetNodeName)));
+    }
+
+    /**
+     * Unit test case for inter file linking for multi level submodule.
+     *
+     * @throws IOException when fails to do IO operations
+     */
+    @Test
+    public void processInterFileLinkingInSubModuleMultiLevel() throws IOException {
+
+        utilManager.createYangFileInfoSet(YangFileScanner.getYangFiles(INTER_FILE_PATH + "InterMultiSubModule/"));
+        utilManager.parseYangFileInfoSet();
+        utilManager.createYangNodeSet();
+        linkerManager.createYangNodeSet(utilManager.getYangNodeSet());
+        linkerManager.linkSubModulesToParentModule(utilManager.getYangNodeSet());
+        linkerManager.addRefToYangFilesImportList(utilManager.getYangNodeSet());
+        linkerManager.addRefToYangFilesIncludeList(utilManager.getYangNodeSet());
+        linkerManager.processInterFileLinking(utilManager.getYangNodeSet());
+        YangNode targetNode = null;
+        String targetNodeName = null;
+
+        for (YangNode node : utilManager.getYangNodeSet()) {
+            List<YangAugment> augments = linker.getListOfYangAugment(node);
+
+            for (YangAugment augment : augments) {
+                targetNodeName = augment.getTargetNode().get(augment.getTargetNode().size() - 1).getNodeIdentifier()
+                        .getName();
+                targetNode = linker.processAugmentXpathLinking(augment.getTargetNode(), node);
+            }
+        }
+
+        assertThat(true, is(targetNode.getName().equals(targetNodeName)));
+    }
+
+    /**
+     * Unit test case for inter file linking for multi level uses inside augment.
+     *
+     * @throws IOException when fails to do IO operations
+     */
+    @Test
+    public void processInterFileLinkingInUsesInAugment() throws IOException {
+
+        /* FIXME: when uses cloning is done test it.
+        utilManager.createYangFileInfoSet(YangFileScanner.getYangFiles(INTER_FILE_PATH + "InterSingleUses/"));
+        utilManager.parseYangFileInfoSet();
+        utilManager.createYangNodeSet();
+        linkerManager.createYangNodeSet(utilManager.getYangNodeSet());
+        linkerManager.addRefToYangFilesImportList(utilManager.getYangNodeSet());
+        linkerManager.addRefToYangFilesIncludeList(utilManager.getYangNodeSet());
+        linkerManager.processInterFileLinking(utilManager.getYangNodeSet());
+
+        YangNode targetNode = null;
+        String targetNodeName = null;
+
+        for (YangNode node : utilManager.getYangNodeSet()) {
+            List<YangAugment> augments = linker.getListOfYangAugment(node);
+
+            for (YangAugment augment : augments) {
+                targetNodeName = augment.getTargetNode().get(augment.getTargetNode().size() - 1)
+                .getNodeIdentifier().getName();
+                targetNode = linker.processXpathLinking(augment.getTargetNode(), node);
+            }
+        }
+
+        assertThat(true, is(targetNode.getName().equals(targetNodeName)));
+        */
+    }
+
+    /**
+     * Unit test case for inter file linking for multi level uses.
+     *
+     * @throws IOException when fails to do IO operations
+     */
+    @Test
+    public void processInterFileLinkingInUsesMultiLevel() throws IOException {
+
+        utilManager.createYangFileInfoSet(YangFileScanner.getYangFiles(INTER_FILE_PATH + "InterMultiUses/"));
+        utilManager.parseYangFileInfoSet();
+        utilManager.createYangNodeSet();
+        linkerManager.createYangNodeSet(utilManager.getYangNodeSet());
+        linkerManager.addRefToYangFilesImportList(utilManager.getYangNodeSet());
+        linkerManager.addRefToYangFilesIncludeList(utilManager.getYangNodeSet());
+        linkerManager.processInterFileLinking(utilManager.getYangNodeSet());
+
+        YangNode targetNode = null;
+        String targetNodeName = null;
+
+        for (YangNode node : utilManager.getYangNodeSet()) {
+            List<YangAugment> augments = linker.getListOfYangAugment(node);
+
+            for (YangAugment augment : augments) {
+                targetNodeName = augment.getTargetNode().get(augment.getTargetNode().size() - 1).getNodeIdentifier()
+                        .getName();
+                targetNode = linker.processAugmentXpathLinking(augment.getTargetNode(), node);
+            }
+        }
+
+        assertThat(true, is(targetNode.getName().equals(targetNodeName)));
+    }
+
+}

-/*
- * Copyright 2016-present Open Networking Laboratory
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.onosproject.yangutils.translator.tojava.utils;
-
-import java.lang.reflect.Constructor;
-import java.lang.reflect.InvocationTargetException;
-
-import org.junit.Test;
-
-import static org.hamcrest.core.Is.is;
-import static org.hamcrest.core.IsNot.not;
-import static org.junit.Assert.assertThat;
-import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.BUILDER_CLASS_MASK;
-import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.BUILDER_INTERFACE_MASK;
-import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_TYPEDEF_CLASS;
-import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.IMPL_CLASS_MASK;
-import static org.onosproject.yangutils.translator.tojava.utils.ClassDefinitionGenerator.generateClassDefinition;
-
-/**
- * Unit tests for class definition generator for generated files.
- */
-public final class ClassDefinitionGeneratorTest {
-
-    private static final String CLASS_NAME = "TestClass";
-    private static final String INTERFACE_CLASS_DEF = "public interface TestClass {\n";
-    private static final String BULDER_INTERFACE_CLASS_DEF = "interface TestClassBuilder {\n\n";
-    private static final String BUILDER_CLASS_DEF = "public class TestClassBuilder implements "
-            + "TestClass.TestClassBuilder {\n";
-    private static final String IMPL_CLASS_DEF = "public final class TestClassImpl implements TestClass {\n";
-    private static final String TYPE_DEF_CLASS_DEF = "public final class TestClass {\n";
-
-    /**
-     * Unit test for private constructor.
-     *
-     * @throws SecurityException if any security violation is observed
-     * @throws NoSuchMethodException if when the method is not found
-     * @throws IllegalArgumentException if there is illegal argument found
-     * @throws InstantiationException if instantiation is provoked for the private constructor
-     * @throws IllegalAccessException if instance is provoked or a method is provoked
-     * @throws InvocationTargetException when an exception occurs by the method or constructor
-     */
-    @Test
-    public void callPrivateConstructors()
-            throws SecurityException, NoSuchMethodException, IllegalArgumentException,
-            InstantiationException, IllegalAccessException, InvocationTargetException {
-
-        Class<?>[] classesToConstruct = {ClassDefinitionGenerator.class };
-        for (Class<?> clazz : classesToConstruct) {
-            Constructor<?> constructor = clazz.getDeclaredConstructor();
-            constructor.setAccessible(true);
-            assertThat(null, not(constructor.newInstance()));
-        }
-    }
-
-    /**
-     * Unit test for builder class definition.
-     */
-    @Test
-    public void generateBuilderClassDefinitionTest() {
-        String builderClassDefinition = generateClassDefinition(BUILDER_CLASS_MASK, CLASS_NAME);
-        assertThat(true, is(builderClassDefinition.equals(BUILDER_CLASS_DEF)));
-    }
-
-    /**
-     * Unit test for builder interface definition.
-     */
-    @Test
-    public void generateBuilderInterfaceDefinitionTest() {
-        String builderInterfaceDefinition = generateClassDefinition(BUILDER_INTERFACE_MASK, CLASS_NAME);
-        assertThat(true, is(builderInterfaceDefinition.equals(BULDER_INTERFACE_CLASS_DEF)));
-    }
-
-    /**
-     * Unit test for impl class definition.
-     */
-    @Test
-    public void generateImplDefinitionTest() {
-        String implDefinition = generateClassDefinition(IMPL_CLASS_MASK, CLASS_NAME);
-        assertThat(true, is(implDefinition.equals(IMPL_CLASS_DEF)));
-    }
-
-    /**
-     * Unit test for interface definition.
-     */
-    @Test
-    public void generateinterfaceDefinitionTest() {
-        // TODO: need to add this test case.
-    }
-
-    /**
-     * Unit test for typedef generated type.
-     */
-    @Test
-    public void generateTypeDefTest() {
-        String typeDef = generateClassDefinition(GENERATE_TYPEDEF_CLASS, CLASS_NAME);
-        assertThat(true, is(typeDef.equals(TYPE_DEF_CLASS_DEF)));
-    }
-}

@@ -30,7 +30,6 @@ import static org.hamcrest.core.IsNot.not;
 import static org.junit.Assert.assertThat;
 import static org.onosproject.yangutils.datamodel.utils.builtindatatype.YangDataTypes.STRING;
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_SERVICE_AND_MANAGER;
-import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCapitalCase;
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getBuild;
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getBuildForInterface;
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getCheckNotNull;
@@ -58,7 +57,6 @@ import static org.onosproject.yangutils.utils.UtilConstants.EQUAL;
 import static org.onosproject.yangutils.utils.UtilConstants.EQUALS_STRING;
 import static org.onosproject.yangutils.utils.UtilConstants.FOUR_SPACE_INDENTATION;
 import static org.onosproject.yangutils.utils.UtilConstants.GET_METHOD_PREFIX;
-import static org.onosproject.yangutils.utils.UtilConstants.IMPL;
 import static org.onosproject.yangutils.utils.UtilConstants.JAVA_LANG;
 import static org.onosproject.yangutils.utils.UtilConstants.NEW;
 import static org.onosproject.yangutils.utils.UtilConstants.NEW_LINE;
@@ -83,6 +81,7 @@ import static org.onosproject.yangutils.utils.UtilConstants.THIS;
 import static org.onosproject.yangutils.utils.UtilConstants.TWELVE_SPACE_INDENTATION;
 import static org.onosproject.yangutils.utils.UtilConstants.VALUE;
 import static org.onosproject.yangutils.utils.UtilConstants.VOID;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCapitalCase;
 
 /**
  * Unit tests for generated methods from the file type.
@@ -107,7 +106,7 @@ public final class MethodsGeneratorTest {
             throws SecurityException, NoSuchMethodException, IllegalArgumentException,
             InstantiationException, IllegalAccessException, InvocationTargetException {
 
-        Class<?>[] classesToConstruct = {MethodsGenerator.class };
+        Class<?>[] classesToConstruct = {MethodsGenerator.class};
         for (Class<?> clazz : classesToConstruct) {
             Constructor<?> constructor = clazz.getDeclaredConstructor();
             constructor.setAccessible(true);
@@ -135,7 +134,7 @@ public final class MethodsGeneratorTest {
         String method = getBuild(CLASS_NAME);
         assertThat(true, is(method.equals(FOUR_SPACE_INDENTATION + PUBLIC + SPACE + CLASS_NAME + SPACE + BUILD
                 + OPEN_PARENTHESIS + CLOSE_PARENTHESIS + SPACE + OPEN_CURLY_BRACKET + NEW_LINE + EIGHT_SPACE_INDENTATION
-                + RETURN + SPACE + NEW + SPACE + CLASS_NAME + IMPL + OPEN_PARENTHESIS + THIS + CLOSE_PARENTHESIS
+                + RETURN + SPACE + NEW + SPACE + "Default" + CLASS_NAME + OPEN_PARENTHESIS + THIS + CLOSE_PARENTHESIS
                 + SEMI_COLAN + NEW_LINE + FOUR_SPACE_INDENTATION + CLOSE_CURLY_BRACKET)));
 
     }
@@ -167,7 +166,7 @@ public final class MethodsGeneratorTest {
     public void getConstructorTest() {
         JavaAttributeInfo testAttr = getTestAttribute();
         YangPluginConfig pluginConfig = new YangPluginConfig();
-        String method = getConstructor(CLASS_NAME, testAttr, GENERATE_SERVICE_AND_MANAGER, pluginConfig);
+        String method = getConstructor(testAttr, GENERATE_SERVICE_AND_MANAGER, pluginConfig);
         assertThat(true, is(method.contains(THIS + PERIOD + CLASS_NAME + SPACE + EQUAL + SPACE + "builder" + OBJECT
                 + PERIOD + GET_METHOD_PREFIX + "Testname" + OPEN_PARENTHESIS + CLOSE_PARENTHESIS + SEMI_COLAN)));
     }
@@ -179,7 +178,7 @@ public final class MethodsGeneratorTest {
     public void getConstructorStartTest() {
         YangPluginConfig pluginConfig = new YangPluginConfig();
         String method = getConstructorStart(CLASS_NAME, pluginConfig);
-        assertThat(true, is(method.contains(PUBLIC + SPACE + CLASS_NAME + IMPL + OPEN_PARENTHESIS + CLASS_NAME
+        assertThat(true, is(method.contains(PUBLIC + SPACE + "Default" + CLASS_NAME + OPEN_PARENTHESIS + CLASS_NAME
                 + BUILDER + SPACE + BUILDER.toLowerCase() + OBJECT + CLOSE_PARENTHESIS + SPACE
                 + OPEN_CURLY_BRACKET + NEW_LINE)));
     }

+module test {  
+    namespace "test:test";  
+    prefix test ;  
+       
+           
+    import test1{  
+       prefix test1;
+    }  
+
+    import test2{  
+       prefix test2;
+    } 
+
+    include acme-types;
+      
+    organization "";  
+    contact "";  
+       
+    description   
+       "Defines basic service types for L3VPN service.";  
+       
+    revision "2015-12-16" {  
+       reference "";  
+    }  
+
+    container cont1 {
+        container cont2 {
+           leaf leaf {
+              type int32;
+           }
+        }
+     }
+
+
+    augment /cont3 {
+        leaf leaf1 {
+           type int32;
+         }
+    }
+
+    augment /cont1/cont2 {
+        leaf leaf2 {
+           type int32;
+        }
+    }
+
+    augment /test1:cont1/test1:cont2 {
+       leaf a {
+          type int32;
+        }
+     }
+
+     augment /test1:cont1/test1:cont2/test1:cont1s/test1:cont1s {
+         leaf a {
+            type int32;
+          }
+      }
+
+     augment /test1:cont1/test1:cont2/test1:cont1s/test1:cont1s/test2:aa {
+        leaf a {
+           type int32;
+        }
+        container aa {
+        }
+     }
+
+}
+    

+module test1 {  
+    namespace "test1:test1";  
+    prefix test1 ;  
+                  
+    organization "";  
+    contact "";  
+       
+    description   
+       "Defines basic service types for L3VPN service.";  
+       
+    revision "2015-12-16" {  
+       reference "";  
+    }  
+
+    container cont1 {
+        container cont2 {
+        }
+     }
+
+    augment /cont1/cont2 {
+       leaf leaf4 {
+          type int32;
+        }
+        container cont1s {
+            container cont1s {
+            }
+        }
+    }
+}
+    

+module test2 {  
+    namespace "test2:test2";  
+    prefix test2 ;  
+                  
+    import test1{  
+       prefix test1;
+    }  
+    organization "";  
+    contact "";  
+       
+    description   
+       "Defines basic service types for L3VPN service.";  
+       
+    revision "2015-12-16" {  
+       reference "";  
+    }  
+
+
+    augment /test1:cont1/test1:cont2/test1:cont1s/test1:cont1s {
+        leaf leaf5 {
+          type int32;
+        }
+        container aa {
+        }
+    }
+}

+submodule acme-types { 
+        
+    belongs-to "test" {
+         prefix "test";
+    }           
+    import test1{  
+       prefix test1;
+    }  
+    organization "";  
+    contact "";  
+         
+    description   
+       "Defines basic service types for L3VPN service.";  
+       
+    revision "2015-12-16" {  
+       reference "";  
+    }  
+
+    container cont3 {
+    }
+}

@@ -1723,8 +1723,9 @@
        uses tet:te-link-state-derived;
      }
 
+     /*
      augment "/te-link-event/te-link-attributes/underlay" {
        description "Add state attributes to te-link underlay.";
        uses te-link-state-underlay-attributes;
-     }
+     } */
    }

+module test5 {
+    namespace "test5:test";
+    prefix test ;
+
+    revision "2016-07-04" {
+             description "Initial revision.";
+    }
+    typedef abc {
+       type int32;
+    }
+
+}

+submodule test6 {
+      
+     belongs-to "test5" {
+         prefix "test";
+    }    
+
+    revision "2016-07-04" {
+             description "Initial revision.";
+    }
+    grouping abc {
+        leaf leaf1 {
+           type int32;
+        }
+    }
+}

+module test7 {
+    namespace "test5:test";  
+    prefix test ;  
+
+    revision "2016-07-04" {
+             description "Initial revision.";
+    }
+
+    leaf abc {
+       type int32;
+    }
+
+}

+module test {  
+    namespace "xpath:inter:single";  
+    prefix test ; 
+   
+    import test1{
+       prefix test1;
+    }
+ 
+    organization "";  
+    contact "";  
+       
+    description   
+        "Defines basic service types for L3VPN service.";  
+       
+    revision "2015-12-16" {  
+        reference "";  
+    }  
+
+    augment /test1:cont1/test1:cont2 {
+       leaf a {
+          type int32;
+       }
+    }
+}
+    

+module test1 {  
+    namespace "xpath:inter:single";  
+    prefix test1 ;  
+      
+    organization "";  
+    contact "";  
+       
+    description   
+        "Defines basic service types for L3VPN service.";  
+       
+    revision "2015-12-16" {  
+        reference "";  
+    }  
+
+    container cont1 {
+       leaf leaf1 {
+          type int32;
+       }
+       container cont2 {
+           leaf leaf1 {
+             type int32;
+          }
+       }
+    }
+}
+    

+module test {  
+    namespace "xpath:inter:single";  
+    prefix test ; 
+   
+    import test1{
+       prefix test1;
+    }
+ 
+    organization "";  
+    contact "";  
+       
+    description   
+        "Defines basic service types for L3VPN service.";  
+       
+    revision "2015-12-16" {  
+        reference "";  
+    }  
+
+    augment /test1:cont1/test1:cont2/test1:cont2 {
+       leaf a {
+          type int32;
+       }
+    }
+}
+    

+module test1 {  
+    namespace "xpath:inter:single";  
+    prefix test1 ;  
+      
+    organization "";  
+    contact "";  
+       
+    description   
+        "Defines basic service types for L3VPN service.";  
+       
+    revision "2015-12-16" {  
+        reference "";  
+    }  
+
+    container cont1 {
+       leaf leaf1 {
+          type int32;
+       }
+    }
+
+    augment /cont1 {
+       container cont2 {
+          leaf leaf1 {
+             type int32;
+          }
+          container cont2 {
+             leaf leaf1 {
+                type int32;
+             }
+          }
+       }
+    }
+}
+    

+module test {  
+    namespace "xpath:inter:single";  
+    prefix test ; 
+   
+    import test1{
+       prefix test1;
+    }
+
+    import test2{
+       prefix test2;
+    }
+ 
+    organization "";  
+    contact "";  
+       
+    description   
+        "Defines basic service types for L3VPN service.";  
+       
+    revision "2015-12-16" {  
+        reference "";  
+    }  
+
+     augment /test2:cont1/test2:cont2/test1:cont2 {
+       leaf a {
+          type int32;
+       }
+     }
+}
+    

+module test1 {  
+    namespace "xpath:inter:single";  
+    prefix test1 ;  
+      
+    import test2{
+       prefix test2;
+    }
+
+    organization "";  
+    contact "";  
+       
+    description   
+        "Defines basic service types for L3VPN service.";  
+       
+    revision "2015-12-16" {  
+        reference "";  
+    }  
+
+
+    container cont1 {
+       leaf leaf1 {
+          type int32;
+       }
+    }
+
+    augment /cont1 {
+       container cont2 {
+          leaf leaf1 {
+             type int32;
+          }
+          container cont2 {
+             leaf leaf1 {
+                type int32;
+             }
+          }
+       }
+    }
+   
+    augment /test2:cont1/test2:cont2 {
+       leaf a {
+          type int32;
+       }
+
+       container cont2 {
+             leaf leaf1 {
+                type int32;
+             }
+        }
+    }
+}
+    

+module test2 {  
+    namespace "xpath:inter:multi";  
+    prefix test2 ;  
+      
+    organization "";  
+    contact "";  
+       
+    description   
+        "Defines basic service types for L3VPN service.";  
+       
+    revision "2015-12-16" {  
+        reference "";  
+    }  
+
+    container cont1 {
+       leaf leaf1 {
+          type int32;
+       }
+       container cont2 {
+          leaf leaf1 {
+             type int32;
+          }
+       }
+    }
+}
+    

+module test {  
+    namespace "xpath:inter:single";  
+    prefix test ; 
+   
+    import test1{
+       prefix test1;
+    }
+
+    import test2{
+       prefix test2;
+    }
+ 
+    organization "";  
+    contact "";  
+       
+    description   
+        "Defines basic service types for L3VPN service.";  
+       
+    revision "2015-12-16" {  
+        reference "";  
+    }  
+
+     augment /test2:cont1/test2:cont2/test2:cont3/test1:cont2 {
+       leaf a {
+          type int32;
+       }
+     }
+}
+    

+module test1 {  
+    namespace "xpath:inter:single";  
+    prefix test1 ;  
+      
+    import test2{
+       prefix test2;
+    }
+
+    organization "";  
+    contact "";  
+       
+    description   
+        "Defines basic service types for L3VPN service.";  
+       
+    revision "2015-12-16" {  
+        reference "";  
+    }  
+
+
+    container cont1 {
+       leaf leaf1 {
+          type int32;
+       }
+    }
+
+    augment /cont1 {
+       container cont2 {
+          leaf leaf1 {
+             type int32;
+          }
+          container cont2 {
+             leaf leaf1 {
+                type int32;
+             }
+          }
+       }
+    }
+   
+    augment /test2:cont1/test2:cont2/test2:cont3 {
+       leaf a {
+          type int32;
+       }
+
+       container cont2 {
+             leaf leaf1 {
+                type int32;
+             }
+        }
+    }
+}
+    

+module test2 {  
+    namespace "xpath:inter:multi";  
+    prefix test2 ;  
+      
+    organization "";  
+    contact "";  
+       
+    description   
+        "Defines basic service types for L3VPN service.";  
+       
+    revision "2015-12-16" {  
+        reference "";  
+    }  
+
+    container cont1 {
+       leaf leaf1 {
+          type int32;
+       }
+       container cont2 {
+          leaf leaf1 {
+             type int32;
+          }
+       }
+    }
+
+    augment /cont1/cont2 {
+        container cont3 {
+            leaf a {
+              type string;
+            }
+        }
+    }
+}
+    

+module test {  
+    namespace "xpath:intra:single";  
+    prefix test ;  
+    
+    import test2 {
+       prefix test2;
+    }
+   
+    include test1;
+
+    organization "";  
+    contact "";  
+       
+    description   
+        "Defines basic service types for L3VPN service.";  
+       
+    revision "2015-12-16" {  
+        reference "";  
+    }  
+
+    augment /test2:cont1/test2:cont2/cont2 {
+       leaf a {
+          type int32;
+       }
+    }
+
+    augment /cont2/cont3/cont4 {
+       leaf a {
+          type int32;
+       }
+    }
+}
+    

+submodule test1 {  
+
+    belongs-to test {
+         prefix test;
+    }           
+    
+    import test2 {
+       prefix test2;
+    }
+    organization "";  
+    contact "";  
+       
+    description   
+        "Defines basic service types for L3VPN service.";  
+       
+    revision "2015-12-16" {  
+        reference "";  
+    }
+
+    container cont2 {
+          leaf leaf1 {
+             type int32;
+         }
+         container cont3 {
+            leaf leaf1 {
+               type int32;
+            }
+         }
+     }
+    
+    augment /cont2/cont3 {
+        container cont4 {
+          leaf leaf1 {
+             type int32;
+          }
+       }
+    }
+
+    augment /test2:cont1/test2:cont2 {
+       leaf a {
+          type int32;
+       }
+       container cont2 {
+          leaf leaf1 {
+             type int32;
+          }
+       }
+    }
+}
+    

+module test2 {  
+    namespace "xpath:inter:multi";  
+    prefix test2 ;  
+      
+    organization "";  
+    contact "";  
+       
+    description   
+        "Defines basic service types for L3VPN service.";  
+       
+    revision "2015-12-16" {  
+        reference "";  
+    }  
+
+    container cont1 {
+       leaf leaf1 {
+          type int32;
+       }
+       container cont2 {
+          leaf leaf1 {
+             type int32;
+          }
+       }
+    }
+}
+    

+module test {  
+    namespace "xpath:intra:single";  
+    prefix test ;  
+    
+    import test2 {
+       prefix test2;
+    }
+   
+    organization "";  
+    contact "";  
+       
+    description   
+        "Defines basic service types for L3VPN service.";  
+       
+    revision "2015-12-16" {  
+        reference "";  
+    }
+
+    container cont2 {
+       leaf a {
+          type int32;
+       }
+       uses test2:group1; 
+    }
+
+    augment /cont2/group1/cont1/cont2 {
+          leaf a {
+          type int32;
+       }
+    } 
+}
+    

+module test2 {  
+    namespace "xpath:inter:multi";  
+    prefix test2 ;  
+      
+    organization "";  
+    contact "";  
+       
+    description   
+        "Defines basic service types for L3VPN service.";  
+       
+    revision "2015-12-16" {  
+        reference "";  
+    }  
+
+   grouping group1 {
+    container cont1 {
+       leaf leaf1 {
+          type int32;
+       }
+       container cont2 {
+          leaf leaf1 {
+             type int32;
+          }
+       }
+    }
+  }
+}
+    

+module test {  
+    namespace "xpath:inter:single";  
+    prefix test ; 
+   
+    import test1{
+       prefix test1;
+    }
+ 
+    organization "";  
+    contact "";  
+       
+    description   
+        "Defines basic service types for L3VPN service.";  
+       
+    revision "2015-12-16" {  
+        reference "";  
+    }  
+
+    augment /test1:cont1 {
+       leaf a {
+          type int32;
+       }
+    }
+}
+    

+module test1 {  
+    namespace "xpath:inter:single";  
+    prefix test1 ;  
+      
+    organization "";  
+    contact "";  
+       
+    description   
+        "Defines basic service types for L3VPN service.";  
+       
+    revision "2015-12-16" {  
+        reference "";  
+    }  
+
+    container cont1 {
+       leaf leaf1 {
+          type int32;
+       }
+    }
+}
+    

+module test {  
+    namespace "xpath:inter:single";  
+    prefix test ; 
+   
+    import test1{
+       prefix test1;
+    }
+ 
+    organization "";  
+    contact "";  
+       
+    description   
+        "Defines basic service types for L3VPN service.";  
+       
+    revision "2015-12-16" {  
+        reference "";  
+    }  
+
+    augment /test1:cont1/test1:cont2 {
+       leaf a {
+          type int32;
+       }
+    }
+}
+    

+module test1 {  
+    namespace "xpath:inter:single";  
+    prefix test1 ;  
+      
+    organization "";  
+    contact "";  
+       
+    description   
+        "Defines basic service types for L3VPN service.";  
+       
+    revision "2015-12-16" {  
+        reference "";  
+    }  
+
+    container cont1 {
+       leaf leaf1 {
+          type int32;
+       }
+    }
+
+    augment /cont1 {
+       container cont2 {
+          leaf leaf1 {
+             type int32;
+          }
+       }
+    }
+}
+    

+module test {  
+    namespace "xpath:intra:single";  
+    prefix test ;  
+    
+    import test2 {
+       prefix test2;
+    }
+   
+    include test1;
+
+    organization "";  
+    contact "";  
+       
+    description   
+        "Defines basic service types for L3VPN service.";  
+       
+    revision "2015-12-16" {  
+        reference "";  
+    }  
+
+    augment /test2:cont1/test2:cont2/cont2 {
+       leaf a {
+          type int32;
+       }
+    }
+}
+    

+submodule test1 {  
+
+    belongs-to test {
+         prefix test;
+    }           
+    
+    import test2 {
+       prefix test2;
+    }
+    organization "";  
+    contact "";  
+       
+    description   
+        "Defines basic service types for L3VPN service.";  
+       
+    revision "2015-12-16" {  
+        reference "";  
+    }  
+
+    augment /test2:cont1/test2:cont2 {
+       leaf a {
+          type int32;
+       }
+       container cont2 {
+          leaf leaf1 {
+             type int32;
+          }
+       }
+    }
+}
+    

+module test2 {  
+    namespace "xpath:inter:multi";  
+    prefix test2 ;  
+      
+    organization "";  
+    contact "";  
+       
+    description   
+        "Defines basic service types for L3VPN service.";  
+       
+    revision "2015-12-16" {  
+        reference "";  
+    }  
+
+    container cont1 {
+       leaf leaf1 {
+          type int32;
+       }
+       container cont2 {
+          leaf leaf1 {
+             type int32;
+          }
+       }
+    }
+}
+    

+module test {  
+    namespace "xpath:intra:single";  
+    prefix test ;  
+    
+    import test2 {
+       prefix test2;
+    }
+   
+    include test1;
+
+    organization "";  
+    contact "";  
+       
+    description   
+        "Defines basic service types for L3VPN service.";  
+       
+    revision "2015-12-16" {  
+        reference "";  
+    }
+
+    augment /test2:cont1/test2:cont2/cont2 {
+       leaf a {
+          type int32;
+       }
+       uses group1; 
+    }
+
+    augment /test2:cont1/test2:cont2/cont2/group1/cont1/cont2 {
+          leaf a {
+          type int32;
+       }
+    } 
+}
+    

+submodule test1 {  
+
+    belongs-to test {
+         prefix test;
+    }           
+    
+    import test2 {
+       prefix test2;
+    }
+    organization "";  
+    contact "";  
+       
+    description   
+        "Defines basic service types for L3VPN service.";  
+       
+    revision "2015-12-16" {  
+        reference "";  
+    }  
+
+
+    grouping group1 {
+        container cont1 {
+           container cont2 {
+               leaf a {
+                  type string;
+               }
+           }
+        }
+    }
+
+    augment /test2:cont1/test2:cont2 {
+       leaf a {
+          type int32;
+       }
+       container cont2 {
+          leaf leaf1 {
+             type int32;
+          }
+       }
+    }
+}
+    

+module test2 {  
+    namespace "xpath:inter:multi";  
+    prefix test2 ;  
+      
+    organization "";  
+    contact "";  
+       
+    description   
+        "Defines basic service types for L3VPN service.";  
+       
+    revision "2015-12-16" {  
+        reference "";  
+    }  
+
+    container cont1 {
+       leaf leaf1 {
+          type int32;
+       }
+       container cont2 {
+          leaf leaf1 {
+             type int32;
+          }
+       }
+    }
+}
+    

+module test {  
+    namespace "xpath:intra:multi";  
+    prefix test ;  
+      
+    organization "";  
+    contact "";  
+       
+    description   
+        "Defines basic service types for L3VPN service.";  
+       
+    revision "2015-12-16" {  
+        reference "";  
+    }  
+
+    container cont1 {
+       leaf leaf1 {
+          type int32;
+       }
+       container cont2 {
+          leaf leaf2 {
+             type int32;
+          }
+          container cont3 {
+              leaf leaf3 {
+                type int32;
+             }
+          }
+       }
+    }
+
+    augment /cont1/cont2/cont3 {
+       leaf a {
+          type int32;
+       }
+    }
+}
+    

+module test {  
+    namespace "xpath:intra:multi";  
+    prefix test ;  
+      
+    organization "";  
+    contact "";  
+       
+    description   
+        "Defines basic service types for L3VPN service.";  
+       
+    revision "2015-12-16" {  
+        reference "";  
+    }  
+
+    container cont1 {
+       leaf leaf1 {
+          type int32;
+       }
+       container cont2 {
+          leaf leaf2 {
+             type int32;
+          }
+          container cont3 {
+              leaf leaf3 {
+                type int32;
+             }
+          }
+       }
+    }
+
+    augment /cont1/cont2/cont3 {
+       leaf a {
+          type int32;
+       }
+       container cont4 {
+          leaf leaf2 {
+             type int32;
+          }
+       }
+    }
+
+    augment /cont1/cont2/cont3/cont4 {
+       leaf a {
+          type int32;
+       }
+
+       container cont5 {
+           leaf leaf1 {
+             type int32;
+          }
+       }
+    }
+}
+    

+module test {  
+    namespace "xpath:intra:multi";  
+    prefix test ;  
+    
+    include test1;
+    organization "";  
+    contact "";  
+       
+    description   
+        "Defines basic service types for L3VPN service.";  
+       
+    revision "2015-12-16" {  
+        reference "";  
+    }  
+
+    container cont1 {
+       leaf leaf1 {
+          type int32;
+       }
+    }
+
+    augment /cont2/cont3 {
+       leaf a {
+          type int32;
+       }
+    }
+}
+    

+submodule test1 {  
+
+    belongs-to "test" {
+         prefix "test";
+    }           
+      
+    organization "";  
+    contact "";  
+       
+    description   
+        "Defines basic service types for L3VPN service.";  
+       
+    revision "2015-12-16" {  
+        reference "";  
+    }  
+
+    container cont2 {
+       leaf leaf1 {
+          type int32;
+       }
+       container cont3 {
+           leaf leaf3 {
+             type int32;
+          }
+       }
+    }
+}
+    

+module test {  
+    namespace "xpath:intra:single";  
+    prefix test ;  
+      
+    organization "";  
+    contact "";  
+       
+    description   
+        "Defines basic service types for L3VPN service.";  
+       
+    revision "2015-12-16" {  
+        reference "";  
+    }  
+
+    grouping group1 {
+        container cont1 {
+           leaf leaf1 {
+             type int32;
+           }
+           container cont3 {
+               leaf leaf1 {
+                 type int32;
+              }
+           }
+        }
+    }
+
+    container cont2 {
+         uses group1;
+    }
+
+    augment /cont2/group1/cont1/cont3 {
+       leaf a {
+          type int32;
+       }
+    }
+}
+    

+module test {  
+    namespace "xpath:intra:single";  
+    prefix test ;  
+      
+    organization "";  
+    contact "";  
+       
+    description   
+        "Defines basic service types for L3VPN service.";  
+       
+    revision "2015-12-16" {  
+        reference "";  
+    }  
+
+    container cont1 {
+       leaf leaf1 {
+          type int32;
+       }
+    }
+
+    augment /cont1 {
+       leaf a {
+          type int32;
+       }
+    }
+}
+    

+module test {  
+    namespace "xpath:intra:single";  
+    prefix test ;  
+      
+    organization "";  
+    contact "";  
+       
+    description   
+        "Defines basic service types for L3VPN service.";  
+       
+    revision "2015-12-16" {  
+        reference "";  
+    }  
+
+    container cont1 {
+       leaf leaf1 {
+          type int32;
+       }
+    }
+
+    augment /cont1 {
+       leaf a {
+          type int32;
+       }
+
+       container cont2 {
+           leaf leaf1 {
+             type int32;
+          }
+       }
+    }
+
+    augment /cont1/cont2 {
+       leaf a {
+          type int32;
+       }
+    }
+}
+    

+module test {  
+    namespace "xpath:intra:single";  
+    prefix test ;  
+    
+    include test1;
+    organization "";  
+    contact "";  
+       
+    description   
+        "Defines basic service types for L3VPN service.";  
+       
+    revision "2015-12-16" {  
+        reference "";  
+    }  
+
+    container cont1 {
+       leaf leaf1 {
+          type int32;
+       }
+    }
+
+    augment /cont2 {
+       leaf a {
+          type int32;
+       }
+    }
+}
+    

+submodule test1 {  
+
+    belongs-to test {
+         prefix test;
+    }           
+      
+    organization "";  
+    contact "";  
+       
+    description   
+        "Defines basic service types for L3VPN service.";  
+       
+    revision "2015-12-16" {  
+        reference "";  
+    }  
+
+    container cont2 {
+       leaf leaf1 {
+          type int32;
+       }
+    }
+}
+    

+module test {  
+    namespace "xpath:intra:single";  
+    prefix test ;  
+      
+    organization "";  
+    contact "";  
+       
+    description   
+        "Defines basic service types for L3VPN service.";  
+       
+    revision "2015-12-16" {  
+        reference "";  
+    }  
+
+    grouping group1 {
+        container cont1 {
+           leaf leaf1 {
+             type int32;
+           }
+        }
+    }
+
+    container cont2 {
+         uses group1;
+    }
+
+    augment /cont2/group1/cont1 {
+       leaf a {
+          type int32;
+       }
+    }
+}
+