[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.

@@ -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;

@@ -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;
 
 /**

@@ -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());
         }

@@ -16,31 +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;
     }
 
     /**

@@ -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";

-/*
- * 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.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;
+          }
+       }
+    }
+}
+