YANG Translator optimization

Change-Id: Ie6a6b9d371a4fc5fd973cf56d6f3c7b44a3146ba

@@ -21,7 +21,6 @@ import java.util.List;
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
 import org.onosproject.yangutils.parser.Parsable;
 import org.onosproject.yangutils.parser.Parsable;
 import org.onosproject.yangutils.utils.YangConstructType;
 import org.onosproject.yangutils.utils.YangConstructType;
-import org.onosproject.yangutils.translator.CachedFileHandle;
 
 
 /*-
 /*-
  * Reference RFC 6020.
  * Reference RFC 6020.
@@ -77,7 +76,8 @@ import org.onosproject.yangutils.translator.CachedFileHandle;
 /**
 /**
  * Data model node to maintain information defined in YANG augment.
  * Data model node to maintain information defined in YANG augment.
  */
  */
-public class YangAugment extends YangNode implements YangLeavesHolder, YangCommonInfo, Parsable {
+public class YangAugment extends YangNode
+        implements YangLeavesHolder, YangCommonInfo, Parsable {
 
 
     /**
     /**
      * Augment target node.
      * Augment target node.
@@ -110,11 +110,6 @@ public class YangAugment extends YangNode implements YangLeavesHolder, YangCommo
     private YangStatusType status;
     private YangStatusType status;
 
 
     /**
     /**
-     * Package of the generated java code.
-     */
-    private String pkg;
-
-    /**
      * Create a YANG augment node.
      * Create a YANG augment node.
      */
      */
     public YangAugment() {
     public YangAugment() {
@@ -316,57 +311,4 @@ public class YangAugment extends YangNode implements YangLeavesHolder, YangCommo
 
 
     }
     }
 
 
-    /**
-     * Get the mapped java package.
-     *
-     * @return the java package
-     */
-    @Override
-    public String getPackage() {
-        return pkg;
-    }
-
-    /**
-     * Set the mapped java package.
-     *
-     * @param pakg the package to set
-     */
-    @Override
-    public void setPackage(String pakg) {
-        pkg = pakg;
-
-    }
-
-    /**
-     * Prepare the information for java code generation corresponding to YANG
-     * grouping info.
-     *
-     * @param codeGenDir code generation directory
-     */
-    @Override
-    public void generateJavaCodeEntry(String codeGenDir) {
-        // TODO Auto-generated method stub
-
-    }
-
-    /**
-     * Create a java file using the YANG grouping info.
-     */
-    @Override
-    public void generateJavaCodeExit() {
-        // TODO Auto-generated method stub
-
-    }
-
-    @Override
-    public CachedFileHandle getFileHandle() {
-        // TODO Auto-generated method stub
-        return null;
-    }
-
-    @Override
-    public void setFileHandle(CachedFileHandle fileHandle) {
-        // TODO Auto-generated method stub
-
-    }
 }
 }

@@ -15,15 +15,15 @@
  */
  */
 package org.onosproject.yangutils.datamodel;
 package org.onosproject.yangutils.datamodel;
 
 
+import java.util.LinkedList;
+import java.util.List;
+
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.detectCollidingChildUtil;
 import org.onosproject.yangutils.parser.Parsable;
 import org.onosproject.yangutils.parser.Parsable;
-import org.onosproject.yangutils.translator.CachedFileHandle;
 import org.onosproject.yangutils.utils.YangConstructType;
 import org.onosproject.yangutils.utils.YangConstructType;
-import static org.onosproject.yangutils.utils.YangConstructType.CASE_DATA;
 
 
-import java.util.LinkedList;
-import java.util.List;
+import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.detectCollidingChildUtil;
+import static org.onosproject.yangutils.utils.YangConstructType.CASE_DATA;
 
 
 /*-
 /*-
  * Reference RFC 6020.
  * Reference RFC 6020.
@@ -127,11 +127,6 @@ public class YangCase extends YangNode
     private YangStatusType status;
     private YangStatusType status;
 
 
     /**
     /**
-     * Package of the generated java code.
-     */
-    private String pkg;
-
-    /**
      * Create a choice node.
      * Create a choice node.
      */
      */
     public YangCase() {
     public YangCase() {
@@ -314,76 +309,23 @@ public class YangCase extends YangNode
         // TODO auto-generated method stub, to be implemented by parser
         // TODO auto-generated method stub, to be implemented by parser
     }
     }
 
 
-    /**
-     * Get the mapped java package.
-     *
-     * @return the java package
-     */
-    @Override
-    public String getPackage() {
-        return pkg;
-    }
-
-    /**
-     * Set the mapped java package.
-     *
-     * @param pakg the package to set
-     */
-    @Override
-    public void setPackage(String pakg) {
-        pkg = pakg;
-
-    }
-
-    /**
-     * Generate the code corresponding to YANG case info.
-     *
-     * @param codeGenDir code generation directory
-     */
-    @Override
-    public void generateJavaCodeEntry(String codeGenDir) {
-        // TODO Auto-generated method stub
-
-    }
-
-    /**
-     * Free resource used for generating code and generate valid java files
-     * corresponding to YANG case info.
-     */
-    @Override
-    public void generateJavaCodeExit() {
-        // TODO Auto-generated method stub
-
-    }
-
-    @Override
-    public CachedFileHandle getFileHandle() {
-        // TODO Auto-generated method stub
-        return null;
-    }
-
-    @Override
-    public void setFileHandle(CachedFileHandle fileHandle) {
-        // TODO Auto-generated method stub
-    }
-
     @Override
     @Override
     public void detectCollidingChild(String identifierName, YangConstructType dataType) throws DataModelException {
     public void detectCollidingChild(String identifierName, YangConstructType dataType) throws DataModelException {
-        if ((this.getParent() == null) || (!(this.getParent() instanceof YangChoice))) {
+        if (getParent() == null || !(getParent() instanceof YangChoice)) {
             throw new DataModelException("Internal Data Model Tree Error: Invalid/Missing holder in case " +
             throw new DataModelException("Internal Data Model Tree Error: Invalid/Missing holder in case " +
-                    this.getName());
+                    getName());
         }
         }
         // Traverse up in tree to ask parent choice start collision detection.
         // Traverse up in tree to ask parent choice start collision detection.
-        ((CollisionDetector) this.getParent()).detectCollidingChild(identifierName, dataType);
+        ((CollisionDetector) getParent()).detectCollidingChild(identifierName, dataType);
     }
     }
 
 
     @Override
     @Override
     public void detectSelfCollision(String identifierName, YangConstructType dataType) throws DataModelException {
     public void detectSelfCollision(String identifierName, YangConstructType dataType) throws DataModelException {
 
 
         if (dataType == CASE_DATA) {
         if (dataType == CASE_DATA) {
-            if (this.getName().equals(identifierName)) {
+            if (getName().equals(identifierName)) {
                 throw new DataModelException("YANG File Error: Identifier collision detected in case \"" +
                 throw new DataModelException("YANG File Error: Identifier collision detected in case \"" +
-                        this.getName() + "\"");
+                        getName() + "\"");
             }
             }
             return;
             return;
         }
         }

@@ -17,8 +17,8 @@ package org.onosproject.yangutils.datamodel;
 
 
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
 import org.onosproject.yangutils.parser.Parsable;
 import org.onosproject.yangutils.parser.Parsable;
-import org.onosproject.yangutils.translator.CachedFileHandle;
 import org.onosproject.yangutils.utils.YangConstructType;
 import org.onosproject.yangutils.utils.YangConstructType;
+
 import static org.onosproject.yangutils.utils.YangConstructType.CHOICE_DATA;
 import static org.onosproject.yangutils.utils.YangConstructType.CHOICE_DATA;
 
 
 /*-
 /*-
@@ -140,11 +140,21 @@ public class YangChoice extends YangNode implements YangCommonInfo, Parsable, Co
         super(YangNodeType.CHOICE_NODE);
         super(YangNodeType.CHOICE_NODE);
     }
     }
 
 
+    /**
+     * Get the choice name.
+     *
+     * @return choice name
+     */
     @Override
     @Override
     public String getName() {
     public String getName() {
         return name;
         return name;
     }
     }
 
 
+    /**
+     * Set the choice name.
+     *
+     * @param name choice name
+     */
     @Override
     @Override
     public void setName(String name) {
     public void setName(String name) {
         this.name = name;
         this.name = name;
@@ -295,46 +305,13 @@ public class YangChoice extends YangNode implements YangCommonInfo, Parsable, Co
     }
     }
 
 
     @Override
     @Override
-    public String getPackage() {
-        // TODO Auto-generated method stub
-        return null;
-    }
-
-    @Override
-    public void setPackage(String pkg) {
-        // TODO Auto-generated method stub
-
-    }
-
-    @Override
-    public void generateJavaCodeEntry(String codeGenDir) {
-        // TODO Auto-generated method stub
-
-    }
-
-    @Override
-    public void generateJavaCodeExit() {
-        // TODO Auto-generated method stub
-
-    }
-
-    @Override
-    public CachedFileHandle getFileHandle() {
-        // TODO Auto-generated method stub
-        return null;
-    }
-
-    @Override
-    public void setFileHandle(CachedFileHandle fileHandle) {
-        // TODO Auto-generated method stub
-
-    }
-
-    @Override
     public void detectCollidingChild(String identifierName, YangConstructType dataType) throws DataModelException {
     public void detectCollidingChild(String identifierName, YangConstructType dataType) throws DataModelException {
 
 
-        YangNode node = this.getChild();
-        while ((node != null)) {
+        if (this.getParent() instanceof YangCase && dataType != YangConstructType.CASE_DATA) {
+            ((CollisionDetector) getParent()).detectCollidingChild(identifierName, dataType);
+        }
+        YangNode node = getChild();
+        while (node != null) {
             if (node instanceof CollisionDetector) {
             if (node instanceof CollisionDetector) {
                 ((CollisionDetector) node).detectSelfCollision(identifierName, dataType);
                 ((CollisionDetector) node).detectSelfCollision(identifierName, dataType);
             }
             }
@@ -346,15 +323,15 @@ public class YangChoice extends YangNode implements YangCommonInfo, Parsable, Co
     public void detectSelfCollision(String identifierName, YangConstructType dataType) throws DataModelException {
     public void detectSelfCollision(String identifierName, YangConstructType dataType) throws DataModelException {
 
 
         if (dataType == CHOICE_DATA) {
         if (dataType == CHOICE_DATA) {
-            if (this.getName().equals(identifierName)) {
+            if (getName().equals(identifierName)) {
                 throw new DataModelException("YANG file error: Identifier collision detected in choice \"" +
                 throw new DataModelException("YANG file error: Identifier collision detected in choice \"" +
-                        this.getName() + "\"");
+                        getName() + "\"");
             }
             }
             return;
             return;
         }
         }
 
 
-        YangNode node = this.getChild();
-        while ((node != null)) {
+        YangNode node = getChild();
+        while (node != null) {
             if (node instanceof CollisionDetector) {
             if (node instanceof CollisionDetector) {
                 ((CollisionDetector) node).detectSelfCollision(identifierName, dataType);
                 ((CollisionDetector) node).detectSelfCollision(identifierName, dataType);
             }
             }

@@ -16,20 +16,15 @@
 
 
 package org.onosproject.yangutils.datamodel;
 package org.onosproject.yangutils.datamodel;
 
 
-import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.detectCollidingChildUtil;
-
-import java.io.IOException;
 import java.util.LinkedList;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.List;
 
 
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
 import org.onosproject.yangutils.parser.Parsable;
 import org.onosproject.yangutils.parser.Parsable;
-import org.onosproject.yangutils.translator.CachedFileHandle;
-import org.onosproject.yangutils.translator.GeneratedFileType;
-import org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax;
-import org.onosproject.yangutils.utils.UtilConstants;
 import org.onosproject.yangutils.utils.YangConstructType;
 import org.onosproject.yangutils.utils.YangConstructType;
-import org.onosproject.yangutils.utils.io.impl.FileSystemUtil;
+
+import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.detectCollidingChildUtil;
+
 /*-
 /*-
  * Reference RFC 6020.
  * Reference RFC 6020.
  *
  *
@@ -136,16 +131,6 @@ public class YangContainer extends YangNode implements YangLeavesHolder, YangCom
     private YangStatusType status = YangStatusType.CURRENT;
     private YangStatusType status = YangStatusType.CURRENT;
 
 
     /**
     /**
-     * Package of the generated java code.
-     */
-    private String pkg;
-
-    /**
-     * Cached Java File Handle.
-     */
-    private CachedFileHandle fileHandle;
-
-    /**
      * Create a container node.
      * Create a container node.
      */
      */
     public YangContainer() {
     public YangContainer() {
@@ -335,26 +320,6 @@ public class YangContainer extends YangNode implements YangLeavesHolder, YangCom
     }
     }
 
 
     /**
     /**
-     * Get the cached file handle.
-     *
-     * @return the fileHandle
-     */
-    @Override
-    public CachedFileHandle getFileHandle() {
-        return fileHandle;
-    }
-
-    /**
-     * Set the cached file handle.
-     *
-     * @param handle the fileHandle to set
-     */
-    @Override
-    public void setFileHandle(CachedFileHandle handle) {
-        fileHandle = handle;
-    }
-
-    /**
      * Returns the type of the data.
      * Returns the type of the data.
      *
      *
      * @return returns CONTAINER_DATA
      * @return returns CONTAINER_DATA
@@ -435,7 +400,7 @@ public class YangContainer extends YangNode implements YangLeavesHolder, YangCom
          * If a node has "config" set to "false", no node underneath it can have
          * If a node has "config" set to "false", no node underneath it can have
          * "config" set to "true".
          * "config" set to "true".
          */
          */
-        if ((!isConfig) && (leaves != null)) {
+        if (!isConfig && leaves != null) {
             for (YangLeaf leaf : leaves) {
             for (YangLeaf leaf : leaves) {
                 if (leaf.isConfig()) {
                 if (leaf.isConfig()) {
                     throw new DataModelException("If a container has \"config\" set to \"false\", no node underneath " +
                     throw new DataModelException("If a container has \"config\" set to \"false\", no node underneath " +
@@ -444,7 +409,7 @@ public class YangContainer extends YangNode implements YangLeavesHolder, YangCom
             }
             }
         }
         }
 
 
-        if ((!isConfig) && (leafLists != null)) {
+        if (!isConfig && leafLists != null) {
             for (YangLeafList leafList : leafLists) {
             for (YangLeafList leafList : leafLists) {
                 if (leafList.isConfig()) {
                 if (leafList.isConfig()) {
                     throw new DataModelException("If a container has \"config\" set to \"false\", no node underneath " +
                     throw new DataModelException("If a container has \"config\" set to \"false\", no node underneath " +
@@ -454,98 +419,6 @@ public class YangContainer extends YangNode implements YangLeavesHolder, YangCom
         }
         }
     }
     }
 
 
-    /**
-     * Get the mapped java package.
-     *
-     * @return the java package
-     */
-    @Override
-    public String getPackage() {
-        return pkg;
-    }
-
-    /**
-     * Set the mapped java package.
-     *
-     * @param pcg the package to set
-     */
-    @Override
-    public void setPackage(String pcg) {
-        pkg = pcg;
-    }
-
-    /**
-     * Generate the java code corresponding to YANG container.
-     *
-     * @param codeGenDir code generation directory
-     * @throws IOException when fails to generate the source files.
-     */
-    @Override
-    public void generateJavaCodeEntry(String codeGenDir) throws IOException {
-        YangNode parent = getParent();
-        String contPkg = JavaIdentifierSyntax.getPackageFromParent(parent.getPackage(), parent.getName());
-
-        contPkg = JavaIdentifierSyntax.getCamelCase(contPkg).toLowerCase();
-        setPackage(contPkg);
-
-        CachedFileHandle handle = null;
-        try {
-            FileSystemUtil.createPackage(codeGenDir + getPackage(), parent.getName() + UtilConstants.CHILDREN);
-            handle = FileSystemUtil.createSourceFiles(getPackage(), getName(),
-                    GeneratedFileType.GENERATE_INTERFACE_WITH_BUILDER);
-            handle.setRelativeFilePath(getPackage().replace(".", "/"));
-            handle.setCodeGenFilePath(codeGenDir);
-        } catch (IOException e) {
-            throw new IOException("Failed to create the source files.");
-        }
-        setFileHandle(handle);
-
-        addLeavesAttributes();
-        addLeafListAttributes();
-        addAttributeInParent();
-    }
-
-    /**
-     * Adds current node attribute to parent file.
-     */
-    private void addAttributeInParent() {
-        if (getParent() != null) {
-            getParent().getFileHandle().addAttributeInfo(null, getName(), false);
-        }
-    }
-
-    @Override
-    public void generateJavaCodeExit() throws IOException {
-        getFileHandle().close();
-        return;
-    }
-
-    /**
-     * Adds leaf attributes in generated files.
-     */
-    private void addLeavesAttributes() {
-
-        List<YangLeaf> leaves = getListOfLeaf();
-        if (leaves != null) {
-            for (YangLeaf leaf : leaves) {
-                getFileHandle().addAttributeInfo(leaf.getDataType(), leaf.getLeafName(), false);
-            }
-        }
-    }
-
-    /**
-     * Adds leaf list's attributes in generated files.
-     */
-    private void addLeafListAttributes() {
-        List<YangLeafList> leavesList = getListOfLeafList();
-        if (leavesList != null) {
-            for (YangLeafList leafList : leavesList) {
-                getFileHandle().addAttributeInfo(leafList.getDataType(), leafList.getLeafName(), true);
-            }
-        }
-        return;
-    }
-
     @Override
     @Override
     public void detectCollidingChild(String identifierName, YangConstructType dataType) throws DataModelException {
     public void detectCollidingChild(String identifierName, YangConstructType dataType) throws DataModelException {
         // Asks helper to detect colliding child.
         // Asks helper to detect colliding child.
@@ -554,9 +427,9 @@ public class YangContainer extends YangNode implements YangLeavesHolder, YangCom
 
 
     @Override
     @Override
     public void detectSelfCollision(String identifierName, YangConstructType dataType) throws DataModelException {
     public void detectSelfCollision(String identifierName, YangConstructType dataType) throws DataModelException {
-        if (this.getName().equals(identifierName)) {
+        if (getName().equals(identifierName)) {
             throw new DataModelException("YANG file error: Duplicate input identifier detected, same as container \""
             throw new DataModelException("YANG file error: Duplicate input identifier detected, same as container \""
-                    + this.getName() + "\"");
+                    + getName() + "\"");
         }
         }
     }
     }
 }
 }

@@ -21,7 +21,6 @@ import java.util.List;
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
 import org.onosproject.yangutils.parser.Parsable;
 import org.onosproject.yangutils.parser.Parsable;
 import org.onosproject.yangutils.utils.YangConstructType;
 import org.onosproject.yangutils.utils.YangConstructType;
-import org.onosproject.yangutils.translator.CachedFileHandle;
 
 
 /*-
 /*-
  * Reference RFC 6020.
  * Reference RFC 6020.
@@ -110,11 +109,6 @@ public class YangGrouping extends YangNode
     private YangStatusType status;
     private YangStatusType status;
 
 
     /**
     /**
-     * Package of the generated java code.
-     */
-    private String pkg;
-
-    /**
      * Creates the grouping node.
      * Creates the grouping node.
      */
      */
     public YangGrouping() {
     public YangGrouping() {
@@ -296,58 +290,4 @@ public class YangGrouping extends YangNode
     public void validateDataOnExit() throws DataModelException {
     public void validateDataOnExit() throws DataModelException {
         // TODO auto-generated method stub, to be implemented by parser
         // TODO auto-generated method stub, to be implemented by parser
     }
     }
-
-    /**
-     * Generate the code for YANG grouping.
-     *
-     * @param codeGenDir code generated directory.
-     */
-    @Override
-    public void generateJavaCodeEntry(String codeGenDir) {
-        // TODO Auto-generated method stub
-
-    }
-
-    /**
-     * Free the resources used to generate java files corresponding to YANG
-     * grouping info and generate valid java files.
-     */
-    @Override
-    public void generateJavaCodeExit() {
-        // TODO Auto-generated method stub
-
-    }
-
-    /**
-     * Get the mapped java package.
-     *
-     * @return the java package
-     */
-    @Override
-    public String getPackage() {
-        return pkg;
-    }
-
-    /**
-     * Set the mapped java package.
-     *
-     * @param pakg the package to set
-     */
-    @Override
-    public void setPackage(String pakg) {
-        pkg = pakg;
-
-    }
-
-    @Override
-    public CachedFileHandle getFileHandle() {
-        // TODO Auto-generated method stub
-        return null;
-    }
-
-    @Override
-    public void setFileHandle(CachedFileHandle fileHandle) {
-        // TODO Auto-generated method stub
-
-    }
 }
 }

@@ -16,16 +16,16 @@
 
 
 package org.onosproject.yangutils.datamodel;
 package org.onosproject.yangutils.datamodel;
 
 
+import java.util.LinkedList;
+import java.util.List;
+
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.detectCollidingChildUtil;
 import org.onosproject.yangutils.parser.Parsable;
 import org.onosproject.yangutils.parser.Parsable;
-import org.onosproject.yangutils.translator.CachedFileHandle;
 import org.onosproject.yangutils.utils.YangConstructType;
 import org.onosproject.yangutils.utils.YangConstructType;
 
 
-import java.util.LinkedList;
-import java.util.List;
+import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.detectCollidingChildUtil;
 
 
-/*-
+/*
  *  The "list" statement is used to define an interior data node in the
  *  The "list" statement is used to define an interior data node in the
  *  schema tree.  A list node may exist in multiple instances in the data
  *  schema tree.  A list node may exist in multiple instances in the data
  *  tree.  Each such instance is known as a list entry.  The "list"
  *  tree.  Each such instance is known as a list entry.  The "list"
@@ -166,11 +166,6 @@ public class YangList extends YangNode
     private YangStatusType status = YangStatusType.CURRENT;
     private YangStatusType status = YangStatusType.CURRENT;
 
 
     /**
     /**
-     * Package of the generated java code.
-     */
-    private String pkg;
-
-    /**
      * Constructor.
      * Constructor.
      */
      */
     public YangList() {
     public YangList() {
@@ -619,61 +614,6 @@ public class YangList extends YangNode
         }
         }
     }
     }
 
 
-    /**
-     * Populate the cached handle with information about the list attributes to
-     * generate java code.
-     *
-     * @param codeGenDir code generated directory
-     */
-    @Override
-    public void generateJavaCodeEntry(String codeGenDir) {
-        // TODO Auto-generated method stub
-
-    }
-
-    /**
-     * Free the resources used to generate the java file corresponding to YANG
-     * list info.
-     */
-    @Override
-    public void generateJavaCodeExit() {
-        // TODO Auto-generated method stub
-
-    }
-
-    /**
-     * Get the mapped java package.
-     *
-     * @return the java package
-     */
-    @Override
-    public String getPackage() {
-        return pkg;
-    }
-
-    /**
-     * Set the mapped java package.
-     *
-     * @param pakg the package to set
-     */
-    @Override
-    public void setPackage(String pakg) {
-        pkg = pakg;
-
-    }
-
-    @Override
-    public CachedFileHandle getFileHandle() {
-        // TODO Auto-generated method stub
-        return null;
-    }
-
-    @Override
-    public void setFileHandle(CachedFileHandle fileHandle) {
-        // TODO Auto-generated method stub
-
-    }
-
     @Override
     @Override
     public void detectCollidingChild(String identifierName, YangConstructType dataType) throws DataModelException {
     public void detectCollidingChild(String identifierName, YangConstructType dataType) throws DataModelException {
         // Asks helper to detect colliding child.
         // Asks helper to detect colliding child.
@@ -682,9 +622,9 @@ public class YangList extends YangNode
 
 
     @Override
     @Override
     public void detectSelfCollision(String identifierName, YangConstructType dataType) throws DataModelException {
     public void detectSelfCollision(String identifierName, YangConstructType dataType) throws DataModelException {
-        if (this.getName().equals(identifierName)) {
+        if (getName().equals(identifierName)) {
             throw new DataModelException("YANG file error: Duplicate input identifier detected, same as list \"" +
             throw new DataModelException("YANG file error: Duplicate input identifier detected, same as list \"" +
-                    this.getName() + "\"");
+                    getName() + "\"");
         }
         }
     }
     }
 }
 }

@@ -15,20 +15,14 @@
  */
  */
 package org.onosproject.yangutils.datamodel;
 package org.onosproject.yangutils.datamodel;
 
 
-import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.detectCollidingChildUtil;
-
-import java.io.IOException;
 import java.util.LinkedList;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.List;
 
 
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
 import org.onosproject.yangutils.parser.Parsable;
 import org.onosproject.yangutils.parser.Parsable;
-import org.onosproject.yangutils.translator.CachedFileHandle;
-import org.onosproject.yangutils.translator.CodeGenerator;
-import org.onosproject.yangutils.translator.GeneratedFileType;
-import org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax;
 import org.onosproject.yangutils.utils.YangConstructType;
 import org.onosproject.yangutils.utils.YangConstructType;
-import org.onosproject.yangutils.utils.io.impl.FileSystemUtil;
+
+import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.detectCollidingChildUtil;
 
 
 /*-
 /*-
  * Reference:RFC 6020.
  * Reference:RFC 6020.
@@ -74,7 +68,7 @@ import org.onosproject.yangutils.utils.io.impl.FileSystemUtil;
  * Data model node to maintain information defined in YANG module.
  * Data model node to maintain information defined in YANG module.
  */
  */
 public class YangModule extends YangNode
 public class YangModule extends YangNode
-        implements YangLeavesHolder, YangDesc, YangReference, Parsable, CodeGenerator, CollisionDetector {
+        implements YangLeavesHolder, YangDesc, YangReference, Parsable, CollisionDetector {
 
 
     /**
     /**
      * Name of the module.
      * Name of the module.
@@ -157,11 +151,6 @@ public class YangModule extends YangNode
      */
      */
     private byte version;
     private byte version;
 
 
-    /**
-     * Cached Java File Handle.
-     */
-    private CachedFileHandle fileHandle;
-
     /*-
     /*-
      * Reference RFC 6020.
      * Reference RFC 6020.
      *
      *
@@ -510,52 +499,6 @@ public class YangModule extends YangNode
     }
     }
 
 
     /**
     /**
-     * Get the mapped java package.
-     *
-     * @return the java package
-     */
-    @Override
-    public String getPackage() {
-        if (getFileHandle() != null) {
-            return getFileHandle().getRelativeFilePath().replace("/", ".");
-        }
-        return null;
-    }
-
-    /**
-     * Set the mapped java package.
-     *
-     * @param pcg the package to set
-     */
-    @Override
-    public void setPackage(String pcg) {
-        if (getFileHandle() != null) {
-            pcg.replace(".", "/");
-            getFileHandle().setRelativeFilePath(pcg);
-        }
-    }
-
-    /**
-     * Get the cached file handle.
-     *
-     * @return the fileHandle
-     */
-    @Override
-    public CachedFileHandle getFileHandle() {
-        return fileHandle;
-    }
-
-    /**
-     * Set the cached file handle.
-     *
-     * @param handle the fileHandle to set
-     */
-    @Override
-    public void setFileHandle(CachedFileHandle handle) {
-        fileHandle = handle;
-    }
-
-    /**
      * Get the list of nested reference's which required resolution.
      * Get the list of nested reference's which required resolution.
      *
      *
      * @return list of nested reference's which required resolution
      * @return list of nested reference's which required resolution
@@ -623,64 +566,6 @@ public class YangModule extends YangNode
     }
     }
 
 
     /**
     /**
-     * Generates java code for module.
-     *
-     * @param codeGenDir code generation directory
-     * @throws IOException when fails to generate the source files
-     */
-    @Override
-    public void generateJavaCodeEntry(String codeGenDir) throws IOException {
-        String modPkg = JavaIdentifierSyntax.getRootPackage(getVersion(), getNameSpace().getUri(),
-                getRevision().getRevDate());
-
-        modPkg = JavaIdentifierSyntax.getCamelCase(modPkg);
-        CachedFileHandle handle = null;
-        try {
-            FileSystemUtil.createPackage(codeGenDir + modPkg, getName());
-            handle = FileSystemUtil.createSourceFiles(modPkg, getName(),
-                    GeneratedFileType.GENERATE_INTERFACE_WITH_BUILDER);
-            handle.setCodeGenFilePath(codeGenDir);
-        } catch (IOException e) {
-            throw new IOException("Failed to create the source files.");
-        }
-
-        setFileHandle(handle);
-        addLeavesAttributes();
-        addLeafListAttributes();
-    }
-
-    @Override
-    public void generateJavaCodeExit() throws IOException {
-        getFileHandle().close();
-        return;
-    }
-
-    /**
-     * Adds leaf attributes in generated files.
-     */
-    private void addLeavesAttributes() {
-
-        List<YangLeaf> leaves = getListOfLeaf();
-        if (leaves != null) {
-            for (YangLeaf leaf : leaves) {
-                getFileHandle().addAttributeInfo(leaf.getDataType(), leaf.getLeafName(), false);
-            }
-        }
-    }
-
-    /**
-     * Adds leaf list's attributes in generated files.
-     */
-    private void addLeafListAttributes() {
-        List<YangLeafList> leavesList = getListOfLeafList();
-        if (leavesList != null) {
-            for (YangLeafList leafList : leavesList) {
-                getFileHandle().addAttributeInfo(leafList.getDataType(), leafList.getLeafName(), true);
-            }
-        }
-    }
-
-    /**
      * Add a type to resolve the nested references.
      * Add a type to resolve the nested references.
      *
      *
      * @param node grouping or typedef node which needs to be resolved
      * @param node grouping or typedef node which needs to be resolved
@@ -715,4 +600,5 @@ public class YangModule extends YangNode
     public void detectSelfCollision(String identifierName, YangConstructType dataType) throws DataModelException {
     public void detectSelfCollision(String identifierName, YangConstructType dataType) throws DataModelException {
         // Not required as module doesn't have any parent.
         // Not required as module doesn't have any parent.
     }
     }
+
 }
 }

@@ -16,13 +16,11 @@
 package org.onosproject.yangutils.datamodel;
 package org.onosproject.yangutils.datamodel;
 
 
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.translator.CachedFileHandle;
-import org.onosproject.yangutils.translator.CodeGenerator;
 
 
 /**
 /**
  * Base class of a node in data model tree.
  * Base class of a node in data model tree.
  */
  */
-public abstract class YangNode implements CodeGenerator {
+public abstract class YangNode {
 
 
     /**
     /**
      * Type of node.
      * Type of node.
@@ -50,6 +48,20 @@ public abstract class YangNode implements CodeGenerator {
     private YangNode previousSibling;
     private YangNode previousSibling;
 
 
     /**
     /**
+     * Get the nodes name.
+     *
+     * @return nodes name
+     */
+    public abstract String getName();
+
+    /**
+     * Set the nodes name.
+     *
+     * @param name nodes name
+     */
+    public abstract void setName(String name);
+
+    /**
      * Default constructor is made private to ensure node type is always set.
      * Default constructor is made private to ensure node type is always set.
      */
      */
     @SuppressWarnings("unused")
     @SuppressWarnings("unused")
@@ -195,19 +207,25 @@ public abstract class YangNode implements CodeGenerator {
         YangNode curNode;
         YangNode curNode;
         curNode = getChild();
         curNode = getChild();
 
 
-        /* If the new node needs to be the first child */
+        /*-
+         *  If the new node needs to be the first child
         if (newChild.getNodeType().ordinal() < curNode.getNodeType().ordinal()) {
         if (newChild.getNodeType().ordinal() < curNode.getNodeType().ordinal()) {
             newChild.setNextSibling(curNode);
             newChild.setNextSibling(curNode);
             curNode.setPreviousSibling(newChild);
             curNode.setPreviousSibling(newChild);
             setChild(newChild);
             setChild(newChild);
             return;
             return;
         }
         }
+         */
 
 
         /*
         /*
          * Get the predecessor child of new child
          * Get the predecessor child of new child
          */
          */
         while (curNode.getNextSibling() != null
         while (curNode.getNextSibling() != null
-                && newChild.getNodeType().ordinal() >= curNode.getNextSibling().getNodeType().ordinal()) {
+        /*
+         * && newChild.getNodeType().ordinal() >=
+         * curNode.getNextSibling().getNodeType().ordinal()
+         */) {
+
             curNode = curNode.getNextSibling();
             curNode = curNode.getNextSibling();
         }
         }
 
 
@@ -218,54 +236,13 @@ public abstract class YangNode implements CodeGenerator {
             return;
             return;
         }
         }
 
 
-        /* Insert the new node in child node list sorted by type */
+        /*-
+         *  Insert the new node in child node list sorted by type
         newChild.setNextSibling(curNode.getNextSibling());
         newChild.setNextSibling(curNode.getNextSibling());
         newChild.setPreviousSibling(curNode);
         newChild.setPreviousSibling(curNode);
         curNode.getNextSibling().setPreviousSibling(newChild);
         curNode.getNextSibling().setPreviousSibling(newChild);
         curNode.setNextSibling(newChild);
         curNode.setNextSibling(newChild);
         return;
         return;
+         */
     }
     }
-
-    /**
-     * Get the YANG name of the node.
-     *
-     * @return the name of node as defined in YANG file.
-     */
-    public abstract String getName();
-
-    /**
-     * Set the YANG name of the node.
-     *
-     * @param name the name of node as defined in YANG file.
-     */
-    public abstract void setName(String name);
-
-    /**
-     * Get the mapped java package.
-     *
-     * @return the java package
-     */
-    public abstract String getPackage();
-
-    /**
-     * Set the mapped java package.
-     *
-     * @param pkg the package to set
-     */
-    public abstract void setPackage(String pkg);
-
-    /**
-     * Get the mapped java file handler.
-     *
-     * @return the file handle.
-     */
-    public abstract CachedFileHandle getFileHandle();
-
-    /**
-     * Set the mapped java file handle.
-     *
-     * @param fileHandle the file handle to set of current node.
-     */
-    public abstract void setFileHandle(CachedFileHandle fileHandle);
-
 }
 }

@@ -15,14 +15,14 @@
  */
  */
 package org.onosproject.yangutils.datamodel;
 package org.onosproject.yangutils.datamodel;
 
 
+import java.util.LinkedList;
+import java.util.List;
+
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.detectCollidingChildUtil;
 import org.onosproject.yangutils.parser.Parsable;
 import org.onosproject.yangutils.parser.Parsable;
-import org.onosproject.yangutils.translator.CachedFileHandle;
 import org.onosproject.yangutils.utils.YangConstructType;
 import org.onosproject.yangutils.utils.YangConstructType;
 
 
-import java.util.LinkedList;
-import java.util.List;
+import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.detectCollidingChildUtil;
 
 
 /*
 /*
  *  Reference RFC 6020.
  *  Reference RFC 6020.
@@ -144,11 +144,6 @@ public class YangSubModule extends YangNode
     private byte version;
     private byte version;
 
 
     /**
     /**
-     * package of the generated java code.
-     */
-    private String pkg;
-
-    /**
      * Create a sub module node.
      * Create a sub module node.
      */
      */
     public YangSubModule() {
     public YangSubModule() {
@@ -468,57 +463,6 @@ public class YangSubModule extends YangNode
         // TODO auto-generated method stub, to be implemented by parser
         // TODO auto-generated method stub, to be implemented by parser
     }
     }
 
 
-    /**
-     * Generates java code for sub-module.
-     *
-     * @param codeGenDir code generation directory.
-     */
-    @Override
-    public void generateJavaCodeEntry(String codeGenDir) {
-        // TODO Auto-generated method stub
-    }
-
-    /**
-     * Free resources used to generate code.
-     */
-    @Override
-    public void generateJavaCodeExit() {
-        // TODO Auto-generated method stub
-
-    }
-
-    /**
-     * Get the mapped java package.
-     *
-     * @return the java package
-     */
-    @Override
-    public String getPackage() {
-        return pkg;
-    }
-
-    /**
-     * Set the mapped java package.
-     *
-     * @param pakg the package to set
-     */
-    @Override
-    public void setPackage(String pakg) {
-        pkg = pakg;
-    }
-
-    @Override
-    public CachedFileHandle getFileHandle() {
-        // TODO Auto-generated method stub
-        return null;
-    }
-
-    @Override
-    public void setFileHandle(CachedFileHandle fileHandle) {
-        // TODO Auto-generated method stub
-
-    }
-
     @Override
     @Override
     public void detectCollidingChild(String identifierName, YangConstructType dataType) throws DataModelException {
     public void detectCollidingChild(String identifierName, YangConstructType dataType) throws DataModelException {
         // Asks helper to detect colliding child.
         // Asks helper to detect colliding child.

@@ -15,16 +15,9 @@
  */
  */
 package org.onosproject.yangutils.datamodel;
 package org.onosproject.yangutils.datamodel;
 
 
-import java.io.IOException;
-
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
 import org.onosproject.yangutils.parser.Parsable;
 import org.onosproject.yangutils.parser.Parsable;
-import org.onosproject.yangutils.translator.CachedFileHandle;
-import org.onosproject.yangutils.translator.GeneratedFileType;
-import org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax;
-import org.onosproject.yangutils.utils.UtilConstants;
 import org.onosproject.yangutils.utils.YangConstructType;
 import org.onosproject.yangutils.utils.YangConstructType;
-import org.onosproject.yangutils.utils.io.impl.FileSystemUtil;
 
 
 /*-
 /*-
  * Reference RFC 6020.
  * Reference RFC 6020.
@@ -92,16 +85,6 @@ public class YangTypeDef extends YangNode implements YangCommonInfo, Parsable {
     private String units;
     private String units;
 
 
     /**
     /**
-     * package of the generated java code.
-     */
-    private String pkg;
-
-    /**
-     * Cached Java File Handle.
-     */
-    private CachedFileHandle fileHandle;
-
-    /**
      * Create a typedef node.
      * Create a typedef node.
      */
      */
     public YangTypeDef() {
     public YangTypeDef() {
@@ -307,103 +290,4 @@ public class YangTypeDef extends YangNode implements YangCommonInfo, Parsable {
         getDerivedType().setDataType(YangDataTypes.DERIVED);
         getDerivedType().setDataType(YangDataTypes.DERIVED);
     }
     }
 
 
-    /**
-     * Generate java code snippet corresponding to YANG typedef.
-     *
-     * @param codeGenDir code generation directory
-     * @throws IOException when fails to generate files for typedef
-     */
-    @Override
-    public void generateJavaCodeEntry(String codeGenDir) throws IOException {
-
-        YangNode parent = getParent();
-        String typeDefPkg = JavaIdentifierSyntax.getPackageFromParent(parent.getPackage(), parent.getName());
-
-        typeDefPkg = JavaIdentifierSyntax.getCamelCase(typeDefPkg).toLowerCase();
-        setPackage(typeDefPkg);
-
-        CachedFileHandle handle = null;
-        try {
-            FileSystemUtil.createPackage(codeGenDir + getPackage(), parent.getName() + UtilConstants.CHILDREN);
-            handle = FileSystemUtil.createSourceFiles(getPackage(), getName(),
-                    GeneratedFileType.GENERATE_TYPEDEF_CLASS);
-            handle.setRelativeFilePath(getPackage().replace(".", "/"));
-            handle.setCodeGenFilePath(codeGenDir);
-        } catch (IOException e) {
-            throw new IOException("Failed to create the source files.");
-        }
-        setFileHandle(handle);
-        getDerivedType().getDataTypeExtendedInfo().getBaseType().setJavaPackage(getPackage());
-        addAttributeInfo();
-        addAttributeInParent();
-    }
-
-    /**
-     * Adds current node attribute to parent file.
-     */
-    private void addAttributeInParent() {
-        if (getParent() != null) {
-            getParent().getFileHandle().addAttributeInfo(null, getName(), false);
-        }
-    }
-
-    /**
-     * Adds attribute to file handle.
-     */
-    private void addAttributeInfo() {
-        getFileHandle().addAttributeInfo(getDerivedType().getDataTypeExtendedInfo().getBaseType(),
-                JavaIdentifierSyntax.getCamelCase(getName()), false);
-    }
-
-    /**
-     * Free resource used for code generation of YANG typedef.
-     *
-     * @throws IOException when fails to generate files
-     */
-    @Override
-    public void generateJavaCodeExit() throws IOException {
-        getFileHandle().close();
-        return;
-    }
-
-    /**
-     * Get the mapped java package.
-     *
-     * @return the java package
-     */
-    @Override
-    public String getPackage() {
-        return pkg;
-    }
-
-    /**
-     * Set the mapped java package.
-     *
-     * @param pakg mapped java package
-     */
-    @Override
-    public void setPackage(String pakg) {
-        pkg = pakg;
-
-    }
-
-    /**
-     * Get the file handle of the cached file used during code generation.
-     *
-     * @return cached file handle
-     */
-    @Override
-    public CachedFileHandle getFileHandle() {
-        return fileHandle;
-    }
-
-    /**
-     * Set the file handle to be used used for code generation.
-     *
-     * @param handle cached file handle
-     */
-    @Override
-    public void setFileHandle(CachedFileHandle handle) {
-        fileHandle = handle;
-    }
 }
 }

@@ -18,7 +18,6 @@ package org.onosproject.yangutils.datamodel;
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
 import org.onosproject.yangutils.parser.Parsable;
 import org.onosproject.yangutils.parser.Parsable;
 import org.onosproject.yangutils.utils.YangConstructType;
 import org.onosproject.yangutils.utils.YangConstructType;
-import org.onosproject.yangutils.translator.CachedFileHandle;
 
 
 /*-
 /*-
  * Reference RFC 6020.
  * Reference RFC 6020.
@@ -213,51 +212,26 @@ public class YangUses extends YangNode implements YangCommonInfo, Parsable {
         // TODO auto-generated method stub, to be implemented by parser
         // TODO auto-generated method stub, to be implemented by parser
     }
     }
 
 
+    /**
+     * Get uses name.
+     *
+     * @return uses name
+     */
     @Override
     @Override
     public String getName() {
     public String getName() {
         // TODO Auto-generated method stub
         // TODO Auto-generated method stub
         return null;
         return null;
     }
     }
 
 
+    /**
+     * Set uses name.
+     *
+     * @param name uses name
+     */
     @Override
     @Override
     public void setName(String name) {
     public void setName(String name) {
         // TODO Auto-generated method stub
         // TODO Auto-generated method stub
 
 
     }
     }
 
 
-    @Override
-    public void generateJavaCodeEntry(String codeGenDir) {
-        // TODO Auto-generated method stub
-
-    }
-
-    @Override
-    public void generateJavaCodeExit() {
-        // TODO Auto-generated method stub
-
-    }
-
-    @Override
-    public String getPackage() {
-        // TODO Auto-generated method stub
-        return null;
-    }
-
-    @Override
-    public void setPackage(String pkg) {
-        // TODO Auto-generated method stub
-
-    }
-
-    @Override
-    public CachedFileHandle getFileHandle() {
-        // TODO Auto-generated method stub
-        return null;
-    }
-
-    @Override
-    public void setFileHandle(CachedFileHandle fileHandle) {
-        // TODO Auto-generated method stub
-
-    }
 }
 }

@@ -63,7 +63,7 @@ public final class DataModelUtils {
             }
             }
         }
         }
         node = node.getChild();
         node = node.getChild();
-        while ((node != null)) {
+        while (node != null) {
             if (node instanceof CollisionDetector) {
             if (node instanceof CollisionDetector) {
                 ((CollisionDetector) node).detectSelfCollision(identifierName, dataType);
                 ((CollisionDetector) node).detectSelfCollision(identifierName, dataType);
             }
             }

+/*
+ * Copyright 2016 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.datamodel.utils;
+
+/**
+ * The target language in which the YANG information is modeled.
+ */
+public enum GeneratedLanguage {
+    /**
+     * Java.
+     */
+    JAVA_GENERATION;
+}

+/*
+ * Copyright 2016 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.datamodel.utils;
+
+import org.onosproject.yangutils.datamodel.YangAugment;
+import org.onosproject.yangutils.datamodel.YangCase;
+import org.onosproject.yangutils.datamodel.YangChoice;
+import org.onosproject.yangutils.datamodel.YangContainer;
+import org.onosproject.yangutils.datamodel.YangGrouping;
+import org.onosproject.yangutils.datamodel.YangList;
+import org.onosproject.yangutils.datamodel.YangModule;
+import org.onosproject.yangutils.datamodel.YangSubModule;
+import org.onosproject.yangutils.datamodel.YangTypeDef;
+import org.onosproject.yangutils.datamodel.YangUses;
+import org.onosproject.yangutils.translator.tojava.javamodel.YangJavaAugment;
+import org.onosproject.yangutils.translator.tojava.javamodel.YangJavaCase;
+import org.onosproject.yangutils.translator.tojava.javamodel.YangJavaChoice;
+import org.onosproject.yangutils.translator.tojava.javamodel.YangJavaContainer;
+import org.onosproject.yangutils.translator.tojava.javamodel.YangJavaGrouping;
+import org.onosproject.yangutils.translator.tojava.javamodel.YangJavaList;
+import org.onosproject.yangutils.translator.tojava.javamodel.YangJavaModule;
+import org.onosproject.yangutils.translator.tojava.javamodel.YangJavaSubModule;
+import org.onosproject.yangutils.translator.tojava.javamodel.YangJavaTypeDef;
+import org.onosproject.yangutils.translator.tojava.javamodel.YangJavaUses;
+
+/**
+ * Factory to create data model objects based on the target file type.
+ */
+public final class YangDataModelFactory {
+
+    /**
+     * Utility class, hence private to prevent creating objects.
+     */
+    private YangDataModelFactory() {
+    }
+
+    /**
+     * Based on the target language generate the inherited data model node.
+     *
+     * @param targetLanguage target language in which YANG mapping needs to be
+     *            generated.
+     * @return the corresponding inherited node based on the target language.
+     */
+    public static YangModule getYangModuleNode(GeneratedLanguage targetLanguage) {
+        switch (targetLanguage) {
+            case JAVA_GENERATION: {
+                return new YangJavaModule();
+            }
+            default: {
+                throw new RuntimeException("Only YANG to Java is supported.");
+            }
+        }
+    }
+
+    /**
+     * Based on the target language generate the inherited data model node.
+     *
+     * @param targetLanguage target language in which YANG mapping needs to be
+     *            generated.
+     * @return the corresponding inherited node based on the target language.
+     */
+    public static YangAugment getYangAugmentNode(GeneratedLanguage targetLanguage) {
+        switch (targetLanguage) {
+            case JAVA_GENERATION: {
+                return new YangJavaAugment();
+            }
+            default: {
+                throw new RuntimeException("Only YANG to Java is supported.");
+            }
+        }
+    }
+
+    /**
+     * Based on the target language generate the inherited data model node.
+     *
+     * @param targetLanguage target language in which YANG mapping needs to be
+     *            generated.
+     * @return the corresponding inherited node based on the target language.
+     */
+    public static YangCase getYangCaseNode(GeneratedLanguage targetLanguage) {
+        switch (targetLanguage) {
+            case JAVA_GENERATION: {
+                return new YangJavaCase();
+            }
+            default: {
+                throw new RuntimeException("Only YANG to Java is supported.");
+            }
+        }
+    }
+
+    /**
+     * Based on the target language generate the inherited data model node.
+     *
+     * @param targetLanguage target language in which YANG mapping needs to be
+     *            generated.
+     * @return the corresponding inherited node based on the target language.
+     */
+    public static YangChoice getYangChoiceNode(GeneratedLanguage targetLanguage) {
+        switch (targetLanguage) {
+            case JAVA_GENERATION: {
+                return new YangJavaChoice();
+            }
+            default: {
+                throw new RuntimeException("Only YANG to Java is supported.");
+            }
+        }
+    }
+
+    /**
+     * Based on the target language generate the inherited data model node.
+     *
+     * @param targetLanguage target language in which YANG mapping needs to be
+     *            generated.
+     * @return the corresponding inherited node based on the target language.
+     */
+    public static YangContainer getYangContainerNode(GeneratedLanguage targetLanguage) {
+        switch (targetLanguage) {
+            case JAVA_GENERATION: {
+                return new YangJavaContainer();
+            }
+            default: {
+                throw new RuntimeException("Only YANG to Java is supported.");
+            }
+        }
+    }
+
+    /**
+     * Based on the target language generate the inherited data model node.
+     *
+     * @param targetLanguage target language in which YANG mapping needs to be
+     *            generated.
+     * @return the corresponding inherited node based on the target language.
+     */
+    public static YangGrouping getYangGroupingNode(GeneratedLanguage targetLanguage) {
+        switch (targetLanguage) {
+            case JAVA_GENERATION: {
+                return new YangJavaGrouping();
+            }
+            default: {
+                throw new RuntimeException("Only YANG to Java is supported.");
+            }
+        }
+    }
+
+    /**
+     * Based on the target language generate the inherited data model node.
+     *
+     * @param targetLanguage target language in which YANG mapping needs to be
+     *            generated.
+     * @return the corresponding inherited node based on the target language.
+     */
+    public static YangList getYangListNode(GeneratedLanguage targetLanguage) {
+        switch (targetLanguage) {
+            case JAVA_GENERATION: {
+                return new YangJavaList();
+            }
+            default: {
+                throw new RuntimeException("Only YANG to Java is supported.");
+            }
+        }
+    }
+
+    /**
+     * Based on the target language generate the inherited data model node.
+     *
+     * @param targetLanguage target language in which YANG mapping needs to be
+     *            generated.
+     * @return the corresponding inherited node based on the target language.
+     */
+    public static YangSubModule getYangSubModuleNode(GeneratedLanguage targetLanguage) {
+        switch (targetLanguage) {
+            case JAVA_GENERATION: {
+                return new YangJavaSubModule();
+            }
+            default: {
+                throw new RuntimeException("Only YANG to Java is supported.");
+            }
+        }
+    }
+
+    /**
+     * Based on the target language generate the inherited data model node.
+     *
+     * @param targetLanguage target language in which YANG mapping needs to be
+     *            generated.
+     * @return the corresponding inherited node based on the target language.
+     */
+    public static YangTypeDef getYangTypeDefNode(GeneratedLanguage targetLanguage) {
+        switch (targetLanguage) {
+            case JAVA_GENERATION: {
+                return new YangJavaTypeDef();
+            }
+            default: {
+                throw new RuntimeException("Only YANG to Java is supported.");
+            }
+        }
+    }
+
+    /**
+     * Based on the target language generate the inherited data model node.
+     *
+     * @param targetLanguage target language in which YANG mapping needs to be
+     *            generated.
+     * @return the corresponding inherited node based on the target language.
+     */
+    public static YangUses getYangUsesNode(GeneratedLanguage targetLanguage) {
+        switch (targetLanguage) {
+            case JAVA_GENERATION: {
+                return new YangJavaUses();
+            }
+            default: {
+                throw new RuntimeException("Only YANG to Java is supported.");
+            }
+        }
+    }
+}

@@ -24,11 +24,12 @@ import org.onosproject.yangutils.parser.Parsable;
 import org.onosproject.yangutils.parser.antlrgencode.GeneratedYangParser;
 import org.onosproject.yangutils.parser.antlrgencode.GeneratedYangParser;
 import org.onosproject.yangutils.parser.exceptions.ParserException;
 import org.onosproject.yangutils.parser.exceptions.ParserException;
 import org.onosproject.yangutils.parser.impl.TreeWalkListener;
 import org.onosproject.yangutils.parser.impl.TreeWalkListener;
+
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorLocation.ENTRY;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorLocation.ENTRY;
-import static org.onosproject.yangutils.parser.impl.parserutils.ListenerUtil.getValidBooleanValue;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorMessageConstruction.constructListenerErrorMessage;
 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.INVALID_HOLDER;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorType.MISSING_HOLDER;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorType.MISSING_HOLDER;
+import static org.onosproject.yangutils.parser.impl.parserutils.ListenerUtil.getValidBooleanValue;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerValidation.checkStackIsNotEmpty;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerValidation.checkStackIsNotEmpty;
 import static org.onosproject.yangutils.utils.YangConstructType.CONFIG_DATA;
 import static org.onosproject.yangutils.utils.YangConstructType.CONFIG_DATA;
 
 
@@ -98,4 +99,4 @@ public final class ConfigListener {
                 throw new ParserException(constructListenerErrorMessage(INVALID_HOLDER, CONFIG_DATA, "", ENTRY));
                 throw new ParserException(constructListenerErrorMessage(INVALID_HOLDER, CONFIG_DATA, "", ENTRY));
         }
         }
     }
     }
-}
\ No newline at end of file
+}

@@ -27,7 +27,8 @@ import org.onosproject.yangutils.parser.exceptions.ParserException;
 import org.onosproject.yangutils.parser.impl.TreeWalkListener;
 import org.onosproject.yangutils.parser.impl.TreeWalkListener;
 import org.onosproject.yangutils.parser.impl.parserutils.ListenerValidation;
 import org.onosproject.yangutils.parser.impl.parserutils.ListenerValidation;
 
 
-import static org.onosproject.yangutils.parser.impl.parserutils.ListenerUtil.getValidIdentifier;
+import static org.onosproject.yangutils.datamodel.utils.GeneratedLanguage.JAVA_GENERATION;
+import static org.onosproject.yangutils.datamodel.utils.YangDataModelFactory.getYangContainerNode;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerCollisionDetector.detectCollidingChildUtil;
 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.ENTRY;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorLocation.EXIT;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorLocation.EXIT;
@@ -37,6 +38,7 @@ import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorTyp
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorType.MISSING_CURRENT_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.MISSING_HOLDER;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorType.UNHANDLED_PARSED_DATA;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorType.UNHANDLED_PARSED_DATA;
+import static org.onosproject.yangutils.parser.impl.parserutils.ListenerUtil.getValidIdentifier;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerValidation.checkStackIsNotEmpty;
 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.validateCardinalityMaxOne;
 import static org.onosproject.yangutils.utils.YangConstructType.CONFIG_DATA;
 import static org.onosproject.yangutils.utils.YangConstructType.CONFIG_DATA;
@@ -110,7 +112,7 @@ public final class ContainerListener {
         int charPositionInLine = ctx.getStart().getCharPositionInLine();
         int charPositionInLine = ctx.getStart().getCharPositionInLine();
         detectCollidingChildUtil(listener, line, charPositionInLine, identifier, CONTAINER_DATA);
         detectCollidingChildUtil(listener, line, charPositionInLine, identifier, CONTAINER_DATA);
 
 
-        YangContainer container = new YangContainer();
+        YangContainer container = getYangContainerNode(JAVA_GENERATION);
         container.setName(identifier);
         container.setName(identifier);
 
 
         /*
         /*
@@ -123,14 +125,14 @@ public final class ContainerListener {
         }
         }
 
 
         Parsable curData = listener.getParsedDataStack().peek();
         Parsable curData = listener.getParsedDataStack().peek();
-        if ((curData instanceof YangModule) || (curData instanceof YangContainer)
-                || (curData instanceof YangList)) {
+        if (curData instanceof YangModule || curData instanceof YangContainer
+                || curData instanceof YangList) {
             YangNode curNode = (YangNode) curData;
             YangNode curNode = (YangNode) curData;
             try {
             try {
                 curNode.addChild(container);
                 curNode.addChild(container);
             } catch (DataModelException e) {
             } catch (DataModelException e) {
                 throw new ParserException(constructExtendedListenerErrorMessage(UNHANDLED_PARSED_DATA,
                 throw new ParserException(constructExtendedListenerErrorMessage(UNHANDLED_PARSED_DATA,
-                                CONTAINER_DATA, ctx.identifier().getText(), ENTRY, e.getMessage()));
+                        CONTAINER_DATA, ctx.identifier().getText(), ENTRY, e.getMessage()));
             }
             }
             listener.getParsedDataStack().push(container);
             listener.getParsedDataStack().push(container);
         } else {
         } else {
@@ -163,7 +165,7 @@ public final class ContainerListener {
             listener.getParsedDataStack().pop();
             listener.getParsedDataStack().pop();
         } else {
         } else {
             throw new ParserException(constructListenerErrorMessage(MISSING_CURRENT_HOLDER, CONTAINER_DATA,
             throw new ParserException(constructListenerErrorMessage(MISSING_CURRENT_HOLDER, CONTAINER_DATA,
-                            ctx.identifier().getText(), EXIT));
+                    ctx.identifier().getText(), EXIT));
         }
         }
     }
     }
 
 

@@ -27,7 +27,8 @@ import org.onosproject.yangutils.parser.exceptions.ParserException;
 import org.onosproject.yangutils.parser.impl.TreeWalkListener;
 import org.onosproject.yangutils.parser.impl.TreeWalkListener;
 import org.onosproject.yangutils.parser.impl.parserutils.ListenerValidation;
 import org.onosproject.yangutils.parser.impl.parserutils.ListenerValidation;
 
 
-import static org.onosproject.yangutils.parser.impl.parserutils.ListenerUtil.getValidIdentifier;
+import static org.onosproject.yangutils.datamodel.utils.GeneratedLanguage.JAVA_GENERATION;
+import static org.onosproject.yangutils.datamodel.utils.YangDataModelFactory.getYangListNode;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerCollisionDetector.detectCollidingChildUtil;
 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.ENTRY;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorLocation.EXIT;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorLocation.EXIT;
@@ -37,6 +38,7 @@ import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorTyp
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorType.MISSING_CURRENT_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.MISSING_HOLDER;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorType.UNHANDLED_PARSED_DATA;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorType.UNHANDLED_PARSED_DATA;
+import static org.onosproject.yangutils.parser.impl.parserutils.ListenerUtil.getValidIdentifier;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerValidation.checkStackIsNotEmpty;
 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.validateCardinalityMaxOne;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerValidation.validateCardinalityNonZero;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerValidation.validateCardinalityNonZero;
@@ -117,7 +119,7 @@ public final class ListListener {
         int charPositionInLine = ctx.getStart().getCharPositionInLine();
         int charPositionInLine = ctx.getStart().getCharPositionInLine();
         detectCollidingChildUtil(listener, line, charPositionInLine, identifier, LIST_DATA);
         detectCollidingChildUtil(listener, line, charPositionInLine, identifier, LIST_DATA);
 
 
-        YangList yangList = new YangList();
+        YangList yangList = getYangListNode(JAVA_GENERATION);
         yangList.setName(identifier);
         yangList.setName(identifier);
 
 
         /*
         /*
@@ -142,7 +144,7 @@ public final class ListListener {
             listener.getParsedDataStack().push(yangList);
             listener.getParsedDataStack().push(yangList);
         } else {
         } else {
             throw new ParserException(constructListenerErrorMessage(INVALID_HOLDER, LIST_DATA,
             throw new ParserException(constructListenerErrorMessage(INVALID_HOLDER, LIST_DATA,
-                            ctx.identifier().getText(), ENTRY));
+                    ctx.identifier().getText(), ENTRY));
         }
         }
     }
     }
 
 
@@ -169,7 +171,7 @@ public final class ListListener {
             listener.getParsedDataStack().pop();
             listener.getParsedDataStack().pop();
         } else {
         } else {
             throw new ParserException(constructListenerErrorMessage(MISSING_CURRENT_HOLDER, LIST_DATA,
             throw new ParserException(constructListenerErrorMessage(MISSING_CURRENT_HOLDER, LIST_DATA,
-                            ctx.identifier().getText(), EXIT));
+                    ctx.identifier().getText(), EXIT));
         }
         }
     }
     }
 
 

@@ -21,13 +21,15 @@ import org.onosproject.yangutils.parser.antlrgencode.GeneratedYangParser;
 import org.onosproject.yangutils.parser.exceptions.ParserException;
 import org.onosproject.yangutils.parser.exceptions.ParserException;
 import org.onosproject.yangutils.parser.impl.TreeWalkListener;
 import org.onosproject.yangutils.parser.impl.TreeWalkListener;
 
 
-import static org.onosproject.yangutils.parser.impl.parserutils.ListenerUtil.getValidIdentifier;
+import static org.onosproject.yangutils.datamodel.utils.GeneratedLanguage.JAVA_GENERATION;
+import static org.onosproject.yangutils.datamodel.utils.YangDataModelFactory.getYangModuleNode;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorLocation.ENTRY;
 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.ListenerErrorLocation.EXIT;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorMessageConstruction.constructListenerErrorMessage;
 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.INVALID_HOLDER;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorType.MISSING_CURRENT_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.MISSING_HOLDER;
+import static org.onosproject.yangutils.parser.impl.parserutils.ListenerUtil.getValidIdentifier;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerValidation.checkStackIsEmpty;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerValidation.checkStackIsEmpty;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerValidation.checkStackIsNotEmpty;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerValidation.checkStackIsNotEmpty;
 import static org.onosproject.yangutils.utils.YangConstructType.MODULE_DATA;
 import static org.onosproject.yangutils.utils.YangConstructType.MODULE_DATA;
@@ -76,7 +78,7 @@ public final class ModuleListener {
 
 
         String identifier = getValidIdentifier(ctx.identifier().getText(), MODULE_DATA, ctx);
         String identifier = getValidIdentifier(ctx.identifier().getText(), MODULE_DATA, ctx);
 
 
-        YangModule yangModule = new YangModule();
+        YangModule yangModule = getYangModuleNode(JAVA_GENERATION);
         yangModule.setName(identifier);
         yangModule.setName(identifier);
 
 
         if (ctx.moduleBody().moduleHeaderStatement().yangVersionStatement() == null) {
         if (ctx.moduleBody().moduleHeaderStatement().yangVersionStatement() == null) {
@@ -100,7 +102,7 @@ public final class ModuleListener {
 
 
         if (!(listener.getParsedDataStack().peek() instanceof YangModule)) {
         if (!(listener.getParsedDataStack().peek() instanceof YangModule)) {
             throw new ParserException(constructListenerErrorMessage(MISSING_CURRENT_HOLDER, MODULE_DATA,
             throw new ParserException(constructListenerErrorMessage(MISSING_CURRENT_HOLDER, MODULE_DATA,
-                                                                    ctx.identifier().getText(), EXIT));
+                    ctx.identifier().getText(), EXIT));
         }
         }
     }
     }
 }
 }

@@ -21,13 +21,15 @@ import org.onosproject.yangutils.parser.antlrgencode.GeneratedYangParser;
 import org.onosproject.yangutils.parser.exceptions.ParserException;
 import org.onosproject.yangutils.parser.exceptions.ParserException;
 import org.onosproject.yangutils.parser.impl.TreeWalkListener;
 import org.onosproject.yangutils.parser.impl.TreeWalkListener;
 
 
-import static org.onosproject.yangutils.parser.impl.parserutils.ListenerUtil.getValidIdentifier;
+import static org.onosproject.yangutils.datamodel.utils.GeneratedLanguage.JAVA_GENERATION;
+import static org.onosproject.yangutils.datamodel.utils.YangDataModelFactory.getYangSubModuleNode;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorLocation.ENTRY;
 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.ListenerErrorLocation.EXIT;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorMessageConstruction.constructListenerErrorMessage;
 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.INVALID_HOLDER;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorType.MISSING_CURRENT_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.MISSING_HOLDER;
+import static org.onosproject.yangutils.parser.impl.parserutils.ListenerUtil.getValidIdentifier;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerValidation.checkStackIsEmpty;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerValidation.checkStackIsEmpty;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerValidation.checkStackIsNotEmpty;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerValidation.checkStackIsNotEmpty;
 import static org.onosproject.yangutils.utils.YangConstructType.SUB_MODULE_DATA;
 import static org.onosproject.yangutils.utils.YangConstructType.SUB_MODULE_DATA;
@@ -71,15 +73,15 @@ public final class SubModuleListener {
      * @param ctx context object of the grammar rule
      * @param ctx context object of the grammar rule
      */
      */
     public static void processSubModuleEntry(TreeWalkListener listener,
     public static void processSubModuleEntry(TreeWalkListener listener,
-                                             GeneratedYangParser.SubModuleStatementContext ctx) {
+            GeneratedYangParser.SubModuleStatementContext ctx) {
 
 
         // Check if stack is empty.
         // Check if stack is empty.
         checkStackIsEmpty(listener, INVALID_HOLDER, SUB_MODULE_DATA, ctx.identifier().getText(),
         checkStackIsEmpty(listener, INVALID_HOLDER, SUB_MODULE_DATA, ctx.identifier().getText(),
-                          ENTRY);
+                ENTRY);
 
 
         String identifier = getValidIdentifier(ctx.identifier().getText(), SUB_MODULE_DATA, ctx);
         String identifier = getValidIdentifier(ctx.identifier().getText(), SUB_MODULE_DATA, ctx);
 
 
-        YangSubModule yangSubModule = new YangSubModule();
+        YangSubModule yangSubModule = getYangSubModuleNode(JAVA_GENERATION);
         yangSubModule.setName(identifier);
         yangSubModule.setName(identifier);
 
 
         if (ctx.submoduleBody().submoduleHeaderStatement().yangVersionStatement() == null) {
         if (ctx.submoduleBody().submoduleHeaderStatement().yangVersionStatement() == null) {
@@ -97,15 +99,15 @@ public final class SubModuleListener {
      * @param ctx context object of the grammar rule
      * @param ctx context object of the grammar rule
      */
      */
     public static void processSubModuleExit(TreeWalkListener listener,
     public static void processSubModuleExit(TreeWalkListener listener,
-                                            GeneratedYangParser.SubModuleStatementContext ctx) {
+            GeneratedYangParser.SubModuleStatementContext ctx) {
 
 
         // Check for stack to be non empty.
         // Check for stack to be non empty.
         checkStackIsNotEmpty(listener, MISSING_HOLDER, SUB_MODULE_DATA, ctx.identifier().getText(),
         checkStackIsNotEmpty(listener, MISSING_HOLDER, SUB_MODULE_DATA, ctx.identifier().getText(),
-                             EXIT);
+                EXIT);
 
 
         if (!(listener.getParsedDataStack().peek() instanceof YangSubModule)) {
         if (!(listener.getParsedDataStack().peek() instanceof YangSubModule)) {
             throw new ParserException(constructListenerErrorMessage(MISSING_CURRENT_HOLDER, SUB_MODULE_DATA,
             throw new ParserException(constructListenerErrorMessage(MISSING_CURRENT_HOLDER, SUB_MODULE_DATA,
-                                                                    ctx.identifier().getText(), EXIT));
+                    ctx.identifier().getText(), EXIT));
         }
         }
     }
     }
 }
 }

@@ -31,7 +31,8 @@ import org.onosproject.yangutils.parser.antlrgencode.GeneratedYangParser;
 import org.onosproject.yangutils.parser.exceptions.ParserException;
 import org.onosproject.yangutils.parser.exceptions.ParserException;
 import org.onosproject.yangutils.parser.impl.TreeWalkListener;
 import org.onosproject.yangutils.parser.impl.TreeWalkListener;
 
 
-import static org.onosproject.yangutils.parser.impl.parserutils.ListenerUtil.getValidIdentifier;
+import static org.onosproject.yangutils.datamodel.utils.GeneratedLanguage.JAVA_GENERATION;
+import static org.onosproject.yangutils.datamodel.utils.YangDataModelFactory.getYangTypeDefNode;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorLocation.ENTRY;
 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.ListenerErrorLocation.EXIT;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorMessageConstruction.constructExtendedListenerErrorMessage;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorMessageConstruction.constructExtendedListenerErrorMessage;
@@ -41,6 +42,7 @@ import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorTyp
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorType.MISSING_CURRENT_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.MISSING_HOLDER;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorType.UNHANDLED_PARSED_DATA;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorType.UNHANDLED_PARSED_DATA;
+import static org.onosproject.yangutils.parser.impl.parserutils.ListenerUtil.getValidIdentifier;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerValidation.checkStackIsNotEmpty;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerValidation.checkStackIsNotEmpty;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerValidation.validateCardinalityEqualsOne;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerValidation.validateCardinalityEqualsOne;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerValidation.validateCardinalityMaxOne;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerValidation.validateCardinalityMaxOne;
@@ -121,7 +123,7 @@ public final class TypeDefListener {
         derivedType.setDataType(YangDataTypes.DERIVED);
         derivedType.setDataType(YangDataTypes.DERIVED);
         derivedType.setDataTypeName(identifier);
         derivedType.setDataTypeName(identifier);
 
 
-        YangTypeDef typeDefNode = new YangTypeDef();
+        YangTypeDef typeDefNode = getYangTypeDefNode(JAVA_GENERATION);
         typeDefNode.setDerivedType(derivedType);
         typeDefNode.setDerivedType(derivedType);
 
 
         Parsable curData = listener.getParsedDataStack().peek();
         Parsable curData = listener.getParsedDataStack().peek();

@@ -33,13 +33,16 @@ import org.onosproject.yangutils.datamodel.YangNode;
 import org.onosproject.yangutils.parser.YangUtilsParser;
 import org.onosproject.yangutils.parser.YangUtilsParser;
 import org.onosproject.yangutils.parser.exceptions.ParserException;
 import org.onosproject.yangutils.parser.exceptions.ParserException;
 import org.onosproject.yangutils.parser.impl.YangUtilsParserManager;
 import org.onosproject.yangutils.parser.impl.YangUtilsParserManager;
-import org.onosproject.yangutils.translator.tojava.JavaCodeGenerator;
 import org.onosproject.yangutils.utils.UtilConstants;
 import org.onosproject.yangutils.utils.UtilConstants;
-import org.onosproject.yangutils.utils.io.impl.CopyrightHeader;
 import org.onosproject.yangutils.utils.io.impl.YangFileScanner;
 import org.onosproject.yangutils.utils.io.impl.YangFileScanner;
-import org.onosproject.yangutils.utils.io.impl.YangIoUtils;
 import org.sonatype.plexus.build.incremental.BuildContext;
 import org.sonatype.plexus.build.incremental.BuildContext;
 
 
+import static org.onosproject.yangutils.translator.tojava.JavaCodeGeneratorUtil.generateJavaCode;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.addToSource;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.clean;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.copyYangFilesToTarget;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getDirectory;
+
 /**
 /**
  * ONOS YANG utility maven plugin. Goal of plugin is yang2java Execution phase
  * ONOS YANG utility maven plugin. Goal of plugin is yang2java Execution phase
  * in generate-sources requiresDependencyResolution at compile time.
  * in generate-sources requiresDependencyResolution at compile time.
@@ -70,7 +73,7 @@ public class YangUtilManager extends AbstractMojo {
      * Output directory.
      * Output directory.
      */
      */
     @Parameter(property = "project.build.outputDirectory", required = true, defaultValue = "target/classes")
     @Parameter(property = "project.build.outputDirectory", required = true, defaultValue = "target/classes")
-    private File outputDirectory;
+    private String outputDirectory;
 
 
     /**
     /**
      * Current maven project.
      * Current maven project.
@@ -84,6 +87,9 @@ public class YangUtilManager extends AbstractMojo {
     @Component
     @Component
     private BuildContext context;
     private BuildContext context;
 
 
+    private static final String DEFAULT_PKG = File.separator
+            + UtilConstants.DEFAULT_BASE_PKG.replace(UtilConstants.PERIOD, UtilConstants.SLASH);
+
     private YangUtilsParser yangUtilsParser = new YangUtilsParserManager();
     private YangUtilsParser yangUtilsParser = new YangUtilsParserManager();
     private String searchDir;
     private String searchDir;
     private String codeGenDir;
     private String codeGenDir;
@@ -94,6 +100,7 @@ public class YangUtilManager extends AbstractMojo {
      * @param curProject maven project
      * @param curProject maven project
      */
      */
     public void setCurrentProject(final MavenProject curProject) {
     public void setCurrentProject(final MavenProject curProject) {
+
         project = curProject;
         project = curProject;
     }
     }
 
 
@@ -102,15 +109,14 @@ public class YangUtilManager extends AbstractMojo {
 
 
         try {
         try {
 
 
-            CopyrightHeader.parseCopyrightHeader();
-
             /**
             /**
              * For deleting the generated code in previous build.
              * For deleting the generated code in previous build.
              */
              */
-            YangIoUtils.clean(baseDir);
+            clean(getDirectory(baseDir, genFilesDir) + DEFAULT_PKG);
+            clean(getDirectory(baseDir, outputDirectory));
 
 
-            searchDir = baseDir + File.separator + yangFilesDir;
-            codeGenDir = baseDir + File.separator + genFilesDir + File.separator;
+            searchDir = getDirectory(baseDir, yangFilesDir);
+            codeGenDir = getDirectory(baseDir, genFilesDir) + File.separator;
 
 
             List<String> yangFiles = YangFileScanner.getYangFiles(searchDir);
             List<String> yangFiles = YangFileScanner.getYangFiles(searchDir);
             Iterator<String> yangFileIterator = yangFiles.iterator();
             Iterator<String> yangFileIterator = yangFiles.iterator();
@@ -118,7 +124,7 @@ public class YangUtilManager extends AbstractMojo {
                 String yangFile = yangFileIterator.next();
                 String yangFile = yangFileIterator.next();
                 try {
                 try {
                     YangNode yangNode = yangUtilsParser.getDataModel(yangFile);
                     YangNode yangNode = yangUtilsParser.getDataModel(yangFile);
-                    JavaCodeGenerator.generateJavaCode(yangNode, codeGenDir);
+                    generateJavaCode(yangNode, codeGenDir);
                 } catch (ParserException e) {
                 } catch (ParserException e) {
                     String logInfo = "Error in file: " + e.getFileName();
                     String logInfo = "Error in file: " + e.getFileName();
                     if (e.getLineNumber() != 0) {
                     if (e.getLineNumber() != 0) {
@@ -127,16 +133,17 @@ public class YangUtilManager extends AbstractMojo {
 
 
                     }
                     }
                     if (e.getMessage() != null) {
                     if (e.getMessage() != null) {
-                        logInfo = logInfo + "\n" + e.getMessage();
+                        logInfo = logInfo + UtilConstants.NEW_LINE + e.getMessage();
                     }
                     }
                     getLog().info(logInfo);
                     getLog().info(logInfo);
                 }
                 }
             }
             }
 
 
-            YangIoUtils.addToSource(baseDir + File.separator + UtilConstants.YANG_GEN_DIR, project, context);
+            addToSource(getDirectory(baseDir, genFilesDir) + DEFAULT_PKG, project, context);
+            copyYangFilesToTarget(yangFiles, getDirectory(baseDir, outputDirectory), project);
         } catch (Exception e) {
         } catch (Exception e) {
             getLog().info(e);
             getLog().info(e);
+            //throw new MojoExecutionException("Exception occured due to " + e.getLocalizedMessage());
         }
         }
     }
     }
-
-}
\ No newline at end of file
+}

-/*
- * Copyright 2016 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;
-
-import java.io.FileNotFoundException;
-import java.io.IOException;
-
-import org.onosproject.yangutils.datamodel.YangType;
-import org.onosproject.yangutils.translator.tojava.utils.TempDataStoreTypes;
-
-/**
- * Cached java file handle, which supports the addition of member attributes and
- * methods.
- */
-public interface CachedFileHandle {
-
-    /**
-     * Add a new attribute to the file(s).
-     *
-     * @param attrType data type of the added attribute
-     * @param name name of the attribute
-     * @param isListAttr if the current added attribute needs to be maintained
-     *            in a list
-     */
-    void addAttributeInfo(YangType<?> attrType, String name, boolean isListAttr);
-
-    /**
-     * Flushes the cached contents to the target file, frees used resources.
-     *
-     * @throws IOException when failes to generated java files
-     */
-    void close() throws IOException;
-
-    /**
-     * Sets directory package path for code generation.
-     *
-     * @param filePath directory package path for code generation
-     */
-    void setRelativeFilePath(String filePath);
-
-    /**
-     * Gets directory package path for code generation.
-     *
-     * @return directory package path for code generation
-     */
-    String getRelativeFilePath();
-
-    /**
-     * Gets base directory package path for code generation.
-     *
-     * @return directory package path for code generation
-     */
-    String getCodeGenFilePath();
-
-    /**
-     * Sets base directory package path for code generation.
-     *
-     * @param path base directory path
-     */
-    void setCodeGenFilePath(String path);
-
-    /**
-     * Writes specific info to a Temp file.
-     *
-     * @param data data to be stored
-     * @param type type of Temp data store
-     * @param className class name
-     * @param genDir generated directory
-     * @throws IOException when fails to create a Temp data file
-     */
-    void setTempData(String data, TempDataStoreTypes type, String className, String genDir) throws IOException;
-
-    /**
-     * Get the Temp data.
-     *
-     * @param type type of Temp data store
-     * @param className name of the class
-     * @param genDir generated directory
-     * @return temp data
-     * @throws IOException when fails to read from the file
-     * @throws ClassNotFoundException when class is missing
-     * @throws FileNotFoundException when file is missing
-     */
-    String getTempData(TempDataStoreTypes type, String className, String genDir)
-            throws IOException, FileNotFoundException, ClassNotFoundException;
-}

@@ -14,17 +14,17 @@
  * limitations under the License.
  * limitations under the License.
  */
  */
 
 
-package org.onosproject.yangutils.translator;
+package org.onosproject.yangutils.translator.tojava;
 
 
 /**
 /**
  * Type of files generated.
  * Type of files generated.
  */
  */
-public final class GeneratedFileType {
+public final class GeneratedJavaFileType {
 
 
     /**
     /**
      * prevent creating attributes.
      * prevent creating attributes.
      */
      */
-    private GeneratedFileType() {
+    private GeneratedJavaFileType() {
     }
     }
 
 
     /**
     /**

+/*
+ * Copyright 2016 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;
+
+/**
+ * Type of files generated.
+ */
+public final class GeneratedTempFileType {
+
+    /**
+     * prevent creating attributes.
+     */
+    private GeneratedTempFileType() {
+    }
+
+    /**
+     * attributes definition temporary file.
+     */
+    public static final int ATTRIBUTES_MASK = 1;
+
+    /**
+     * getter methods for interface.
+     */
+    public static final int GETTER_FOR_INTERFACE_MASK = 2;
+
+    /**
+     * getter methods for class.
+     */
+    public static final int GETTER_FOR_CLASS_MASK = 4;
+
+    /**
+     * setter methods for interface.
+     */
+    public static final int SETTER_FOR_INTERFACE_MASK = 8;
+
+    /**
+     * setter methods for class.
+     */
+    public static final int SETTER_FOR_CLASS_MASK = 16;
+
+    /**
+     * constructor method of class.
+     */
+    public static final int CONSTRUCTOR_IMPL_MASK = 32;
+
+    /**
+     * hash code implementation of class.
+     */
+    public static final int HASH_CODE_IMPL_MASK = 64;
+
+    /**
+     * equals implementation of class.
+     */
+    public static final int EQUALS_IMPL_MASK = 128;
+
+    /**
+     * to string implementation of class.
+     */
+    public static final int TO_STRING_IMPL_MASK = 256;
+}

+/*
+ * Copyright 2016 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;
+
+/**
+ * Data model nodes which are required to generate java classes, need to support
+ * java file info.
+ */
+public interface HasJavaFileInfo {
+    /**
+     * Get the generated java file information.
+     *
+     * @return generated java file information
+     */
+    public JavaFileInfo getJavaFileInfo();
+
+    /**
+     * Set the java file info object.
+     *
+     * @param javaInfo java file info object
+     */
+    public void setJavaFileInfo(JavaFileInfo javaInfo);
+}

+/*
+ * Copyright 2016 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;
+
+/**
+ * Maintains the information of the java import data.
+ */
+public interface HasJavaImportData {
+    /**
+     * Get the data of java imports to be included in generated file.
+     *
+     * @return data of java imports to be included in generated file
+     */
+    public JavaImportData getJavaImportData();
+
+    /**
+     * Set the data of java imports to be included in generated file.
+     *
+     * @param javaImportData data of java imports to be included in generated
+     *            file
+     */
+    public void setJavaImportData(JavaImportData javaImportData);
+}

@@ -13,29 +13,23 @@
  * See the License for the specific language governing permissions and
  * See the License for the specific language governing permissions and
  * limitations under the License.
  * limitations under the License.
  */
  */
-
-package org.onosproject.yangutils.translator;
-
-import java.io.IOException;
+package org.onosproject.yangutils.translator.tojava;
 
 
 /**
 /**
- * Abstraction of an entity which provides Code generator functionalities.
+ * Has temporary file handle.
  */
  */
-public interface CodeGenerator {
-
+public interface HasTempJavaCodeFragmentFiles {
     /**
     /**
-     * Traverse the schema of application and generate corresponding code.
+     * Get the temporary file handle.
      *
      *
-     * @param codeGenDir code generation directory
-     * @throws IOException when fails to translate the data model tree
+     * @return temporary file handle
      */
      */
-    void generateJavaCodeEntry(String codeGenDir) throws IOException;
+    TempJavaCodeFragmentFiles getTempJavaCodeFragmentFiles();
 
 
     /**
     /**
-     * Traverse the schema of application and generate corresponding code.
+     * Set temporary file handle.
      *
      *
-     * @throws IOException when fails to generate java code
+     * @param fileHandle temporary file handle
      */
      */
-    void generateJavaCodeExit() throws IOException;
-
+    void setTempJavaCodeFragmentFiles(TempJavaCodeFragmentFiles fileHandle);
 }
 }

@@ -16,12 +16,18 @@
 
 
 package org.onosproject.yangutils.translator.tojava;
 package org.onosproject.yangutils.translator.tojava;
 
 
+import org.onosproject.yangutils.datamodel.YangNode;
 import org.onosproject.yangutils.datamodel.YangType;
 import org.onosproject.yangutils.datamodel.YangType;
 
 
+import static org.onosproject.yangutils.translator.tojava.JavaQualifiedTypeInfo.getIsQualifiedAccessOrAddToImportList;
+import static org.onosproject.yangutils.translator.tojava.JavaQualifiedTypeInfo.getQualifiedTypeInfoOfCurNode;
+import static org.onosproject.yangutils.translator.tojava.JavaQualifiedTypeInfo.getQualifiedTypeInfoOfLeafAttribute;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCamelCase;
+
 /**
 /**
  * Maintains the attribute info corresponding to class/interface generated.
  * Maintains the attribute info corresponding to class/interface generated.
  */
  */
-public class AttributeInfo {
+public final class JavaAttributeInfo {
 
 
     /**
     /**
      * The data type info of attribute.
      * The data type info of attribute.
@@ -47,12 +53,12 @@ public class AttributeInfo {
      * The class info will be used to set the attribute type and package info
      * The class info will be used to set the attribute type and package info
      * will be use for qualified name.
      * will be use for qualified name.
      */
      */
-    private ImportInfo importInfo;
+    private JavaQualifiedTypeInfo importInfo;
 
 
     /**
     /**
      * Default constructor.
      * Default constructor.
      */
      */
-    public AttributeInfo() {
+    private JavaAttributeInfo() {
     }
     }
 
 
     /**
     /**
@@ -61,6 +67,10 @@ public class AttributeInfo {
      * @return the data type info of attribute
      * @return the data type info of attribute
      */
      */
     public YangType<?> getAttributeType() {
     public YangType<?> getAttributeType() {
+
+        if (attrType == null) {
+            throw new RuntimeException("Expected java attribute type is null");
+        }
         return attrType;
         return attrType;
     }
     }
 
 
@@ -80,6 +90,10 @@ public class AttributeInfo {
      * @return name of the attribute
      * @return name of the attribute
      */
      */
     public String getAttributeName() {
     public String getAttributeName() {
+
+        if (name == null) {
+            throw new RuntimeException("Expected java attribute name is null");
+        }
         return name;
         return name;
     }
     }
 
 
@@ -89,6 +103,7 @@ public class AttributeInfo {
      * @param attrName name of the attribute
      * @param attrName name of the attribute
      */
      */
     public void setAttributeName(String attrName) {
     public void setAttributeName(String attrName) {
+
         name = attrName;
         name = attrName;
     }
     }
 
 
@@ -98,6 +113,7 @@ public class AttributeInfo {
      * @return the if the added attribute is a list of info
      * @return the if the added attribute is a list of info
      */
      */
     public boolean isListAttr() {
     public boolean isListAttr() {
+
         return isListAttr;
         return isListAttr;
     }
     }
 
 
@@ -107,6 +123,7 @@ public class AttributeInfo {
      * @param isList if the added attribute is a list of info
      * @param isList if the added attribute is a list of info
      */
      */
     public void setListAttr(boolean isList) {
     public void setListAttr(boolean isList) {
+
         isListAttr = isList;
         isListAttr = isList;
     }
     }
 
 
@@ -118,6 +135,7 @@ public class AttributeInfo {
      *         qualified manner.
      *         qualified manner.
      */
      */
     public boolean isQualifiedName() {
     public boolean isQualifiedName() {
+
         return isQualifiedName;
         return isQualifiedName;
     }
     }
 
 
@@ -128,7 +146,8 @@ public class AttributeInfo {
      * @param isQualified if the added attribute has to be accessed in a fully
      * @param isQualified if the added attribute has to be accessed in a fully
      *            qualified manner
      *            qualified manner
      */
      */
-    public void setQualifiedName(boolean isQualified) {
+    public void setIsQualifiedAccess(boolean isQualified) {
+
         isQualifiedName = isQualified;
         isQualifiedName = isQualified;
     }
     }
 
 
@@ -138,7 +157,8 @@ public class AttributeInfo {
      *
      *
      * @return import info
      * @return import info
      */
      */
-    public ImportInfo getImportInfo() {
+    public JavaQualifiedTypeInfo getImportInfo() {
+
         return importInfo;
         return importInfo;
     }
     }
 
 
@@ -147,8 +167,83 @@ public class AttributeInfo {
      *
      *
      * @param importInfo import info for the attribute type
      * @param importInfo import info for the attribute type
      */
      */
-    public void setImportInfo(ImportInfo importInfo) {
+    public void setImportInfo(JavaQualifiedTypeInfo importInfo) {
+
         this.importInfo = importInfo;
         this.importInfo = importInfo;
     }
     }
 
 
+    /**
+     * Create an attribute info object corresponding to the passed leaf
+     * information and return it.
+     *
+     * @param curNode current data model node for which the java file is being
+     *            generated
+     * @param attributeType leaf data type
+     * @param attributeName leaf name
+     * @param isListAttribute is the current added attribute needs to be a list
+     * @return AttributeInfo attribute details required to add in temporary
+     *         files
+     */
+    public static JavaAttributeInfo getAttributeInfoOfLeaf(YangNode curNode,
+            YangType<?> attributeType, String attributeName,
+            boolean isListAttribute) {
+
+        JavaAttributeInfo newAttr = new JavaAttributeInfo();
+
+        /*
+         * Get the import info corresponding to the attribute for import in
+         * generated java files or qualified access
+         */
+        JavaQualifiedTypeInfo importInfo = getQualifiedTypeInfoOfLeafAttribute(curNode,
+                attributeType, attributeName, isListAttribute);
+        newAttr.setImportInfo(importInfo);
+        newAttr.setIsQualifiedAccess(getIsQualifiedAccessOrAddToImportList(
+                curNode, importInfo));
+        newAttr.setAttributeName(getCamelCase(attributeName));
+        newAttr.setListAttr(isListAttribute);
+        newAttr.setImportInfo(importInfo);
+        newAttr.setAttributeType(attributeType);
+
+        return newAttr;
+    }
+
+    /**
+     * Create an attribute info object corresponding to a data model node and
+     * return it.
+     *
+     * @param curNode current data model node for which the java code generation
+     *            is being handled
+     * @param parentNode parent node in which the current node is an attribute
+     * @param isListNode is the current added attribute needs to be a list
+     * @return AttributeInfo attribute details required to add in temporary
+     *         files
+     */
+    public static JavaAttributeInfo getCurNodeAsAttributeInParent(
+            YangNode curNode, YangNode parentNode, boolean isListNode) {
+
+        JavaAttributeInfo newAttr = new JavaAttributeInfo();
+
+        //        if (curNode instanceof HasJavaFileInfo) {
+        //          throw new RuntimeException("translator data model node does not have java info");
+        //    }
+
+        String curNodeName = ((HasJavaFileInfo) curNode).getJavaFileInfo().getJavaName();
+
+        /*
+         * Get the import info corresponding to the attribute for import in
+         * generated java files or qualified access
+         */
+        JavaQualifiedTypeInfo qualifiedTypeInfo = getQualifiedTypeInfoOfCurNode(parentNode,
+                curNodeName, isListNode);
+        newAttr.setImportInfo(qualifiedTypeInfo);
+        newAttr.setIsQualifiedAccess(
+                getIsQualifiedAccessOrAddToImportList(parentNode,
+                        qualifiedTypeInfo));
+        newAttr.setAttributeName(getCamelCase(curNodeName));
+        newAttr.setListAttr(isListNode);
+        newAttr.setImportInfo(qualifiedTypeInfo);
+        newAttr.setAttributeType(null);
+
+        return newAttr;
+    }
 }
 }

@@ -18,46 +18,24 @@ package org.onosproject.yangutils.translator.tojava;
 
 
 import java.io.IOException;
 import java.io.IOException;
 
 
-import org.onosproject.yangutils.datamodel.YangNode;
-
 /**
 /**
- * Implementation of Java code generator based on application schema.
+ * Abstraction of an entity which provides Code generator functionalities.
  */
  */
-public final class JavaCodeGenerator {
+public interface JavaCodeGenerator {
 
 
     /**
     /**
-     * Default constructor.
+     * Traverse the schema of application and generate corresponding code.
+     *
+     * @param codeGenDir code generation directory
+     * @throws IOException when fails to translate the data model tree
      */
      */
-    private JavaCodeGenerator() {
-    }
+    void generateCodeEntry(String codeGenDir) throws IOException;
 
 
     /**
     /**
-     * Generate Java code files corresponding to the YANG schema.
+     * Traverse the schema of application and generate corresponding code.
      *
      *
-     * @param rootNode root node of the data model tree
-     * @param codeGenDir code generation directory
-     * @throws IOException when fails to generate java code file the current node
+     * @throws IOException when fails to generate java code
      */
      */
-    public static void generateJavaCode(YangNode rootNode, String codeGenDir) throws IOException {
-        YangNode curNode = rootNode;
-        TraversalType curTraversal = TraversalType.ROOT;
+    void generateCodeExit() throws IOException;
 
 
-        while (!(curNode == null)) {
-            if (curTraversal != TraversalType.PARENT) {
-                curNode.generateJavaCodeEntry(codeGenDir);
-            }
-            if (curTraversal != TraversalType.PARENT && curNode.getChild() != null) {
-                curTraversal = TraversalType.CHILD;
-                curNode = curNode.getChild();
-            } else if (curNode.getNextSibling() != null) {
-                curNode.generateJavaCodeExit();
-                curTraversal = TraversalType.SIBILING;
-                curNode = curNode.getNextSibling();
-            } else {
-                curNode.generateJavaCodeExit();
-                curTraversal = TraversalType.PARENT;
-                curNode = curNode.getParent();
-            }
-        }
-    }
 }
 }

+/*
+ * Copyright 2016 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;
+
+import java.io.IOException;
+
+import org.onosproject.yangutils.datamodel.YangNode;
+
+/**
+ * Implementation of Java code generator based on application schema.
+ */
+public final class JavaCodeGeneratorUtil {
+
+    /**
+     * Default constructor.
+     */
+    private JavaCodeGeneratorUtil() {
+    }
+
+    /**
+     * Generate Java code files corresponding to the YANG schema.
+     *
+     * @param rootNode root node of the data model tree
+     * @param codeGenDir code generation directory
+     * @throws IOException when fails to generate java code file the current
+     *             node
+     */
+    public static void generateJavaCode(YangNode rootNode, String codeGenDir) throws IOException {
+        YangNode curNode = rootNode;
+        TraversalType curTraversal = TraversalType.ROOT;
+
+        while (!(curNode == null)) {
+            if (curTraversal != TraversalType.PARENT) {
+                generateCodeEntry(curNode, codeGenDir);
+            }
+            if (curTraversal != TraversalType.PARENT && curNode.getChild() != null) {
+                curTraversal = TraversalType.CHILD;
+                curNode = curNode.getChild();
+            } else if (curNode.getNextSibling() != null) {
+                generateCodeExit(curNode);
+                curTraversal = TraversalType.SIBILING;
+                curNode = curNode.getNextSibling();
+            } else {
+                generateCodeExit(curNode);
+                curTraversal = TraversalType.PARENT;
+                curNode = curNode.getParent();
+            }
+        }
+    }
+
+    /**
+     * Generates the current nodes code snippet.
+     *
+     * @param curNode current data model node for which the code needs to be
+     *            generated
+     * @param codeGenDir the base directory where the code needs to be generated
+     * @throws IOException IO operation exception
+     */
+    private static void generateCodeEntry(YangNode curNode,
+            String codeGenDir) throws IOException {
+
+        if (curNode instanceof JavaCodeGenerator) {
+            ((JavaCodeGenerator) curNode).generateCodeEntry(codeGenDir);
+        } else {
+            throw new RuntimeException(
+                    "Gnenerated data model node cannot be translated to target language code");
+        }
+    }
+
+    /**
+     * Generates the current nodes code target code from the snippet.
+     *
+     * @param curNode current data model node for which the code needs to be
+     *            generated
+     * @throws IOException IO operation exception
+     */
+    private static void generateCodeExit(YangNode curNode) throws IOException {
+
+        if (curNode instanceof JavaCodeGenerator) {
+            ((JavaCodeGenerator) curNode).generateCodeExit();
+        } else {
+            throw new RuntimeException(
+                    "Gnenerated data model node cannot be translated to target language code");
+        }
+    }
+}

+/*
+ * Copyright 2016 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;
+
+/**
+ * Cached java file handle, which supports the addition of member attributes and
+ * methods.
+ */
+public class JavaFileInfo {
+    /**
+     * The type(s) of java source file(s) to be generated when the cached file
+     * handle is closed.
+     */
+    private int genFileTypes;
+
+    /**
+     * Name of the module.
+     */
+    private String javaName;
+
+    /**
+     * java Package of the mapped java class.
+     */
+    private String pkg;
+
+    /**
+     * File generation directory path.
+     */
+    private String relativeFilePath;
+
+    /**
+     * File generation base directory path.
+     */
+    private String codeGenDirFilePath;
+
+    /**
+     * Get the types of files being generated corresponding to the YANG
+     * definition.
+     *
+     * @return the types of files being generated corresponding to the YANG
+     *         definition
+     */
+    public int getGeneratedFileTypes() {
+        return genFileTypes;
+    }
+
+    /**
+     * Set the types of files being generated corresponding to the YANG
+     * definition.
+     *
+     * @param fileTypes the types of files being generated corresponding to the
+     *            YANG definition
+     */
+    public void setGeneratedFileTypes(int fileTypes) {
+        genFileTypes = fileTypes;
+    }
+
+    /**
+     * Get the java name of the node.
+     *
+     * @return the java name of node
+     */
+    public String getJavaName() {
+        return javaName;
+    }
+
+    /**
+     * Set the java name of the node.
+     *
+     * @param name the java name of node
+     */
+    public void setJavaName(String name) {
+        javaName = name;
+    }
+
+    /**
+     * Get the mapped java package.
+     *
+     * @return the java package
+     */
+    public String getPackage() {
+        if (pkg == null) {
+            throw new RuntimeException("Referencing package of a generated java file which is not set");
+        }
+        return pkg;
+    }
+
+    /**
+     * Set the node's package.
+     *
+     * @param nodePackage node's package
+     */
+    public void setPackage(String nodePackage) {
+        pkg = nodePackage;
+    }
+
+    /**
+     * Sets directory package path for code generation.
+     *
+     * @param path directory package path for code generation
+     */
+    public void setPackageFilePath(String path) {
+        relativeFilePath = path;
+    }
+
+    /**
+     * Gets directory package path for code generation.
+     *
+     * @return directory package path for code generation
+     */
+    public String getPackageFilePath() {
+        return relativeFilePath;
+    }
+
+    /**
+     * Gets base directory package path for code generation.
+     *
+     * @return directory package path for code generation
+     */
+    public String getBaseCodeGenPath() {
+        return codeGenDirFilePath;
+    }
+
+    /**
+     * Sets base directory package path for code generation.
+     *
+     * @param path base directory path
+     */
+    public void setBaseCodeGenPath(String path) {
+        codeGenDirFilePath = path;
+    }
+}

+/*
+ * Copyright 2016 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;
+
+import java.util.SortedSet;
+import java.util.TreeSet;
+
+import org.onosproject.yangutils.datamodel.YangNode;
+
+/**
+ * Generated Java file can contain imports.
+ */
+public class JavaImportData {
+
+    /**
+     * Flag to denote if any list in imported.
+     */
+    private boolean isListToImport;
+
+    /**
+     * Sorted set of import info, to be used to maintain the set of classes to
+     * be imported in the generated class.
+     */
+    private SortedSet<JavaQualifiedTypeInfo> importSet;
+
+    /**
+     * Default constructor.
+     */
+    public JavaImportData() {
+        setImportSet(new TreeSet<JavaQualifiedTypeInfo>());
+    }
+
+    /**
+     * Get if the list needs to be imported.
+     *
+     * @return true if any of the attribute needs to be maintained as a list.
+     */
+    public boolean getIfListImported() {
+        return isListToImport;
+    }
+
+    /**
+     * Set the status of importing list.
+     *
+     * @param isList status to mention list is bing imported.
+     */
+    public void setIfListImported(boolean isList) {
+        isListToImport = isList;
+    }
+
+    /**
+     * Get the set containing the imported class/interface info.
+     *
+     * @return the set containing the imported class/interface info
+     */
+    public SortedSet<JavaQualifiedTypeInfo> getImportSet() {
+        return importSet;
+    }
+
+    /**
+     * Assign the set containing the imported class/interface info.
+     *
+     * @param importSet the set containing the imported class/interface info
+     */
+    private void setImportSet(SortedSet<JavaQualifiedTypeInfo> importSet) {
+        this.importSet = importSet;
+    }
+
+    /**
+     * Add an imported class/interface info if it is not already part of the
+     * collection.
+     *
+     * If already part of the collection, check if the packages are same, if so
+     * then return true, to denote it is already in the import collection, and
+     * it can be accessed without qualified access. If the packages do not
+     * match, then do not add to the import collection, and return false to
+     * denote, it is not added to import collection and needs to be accessed in
+     * a qualified manner.
+     *
+     * @param curNode current data model node
+     * @param newImportInfo class/interface info being imported
+     * @return status of new addition of class/interface to the import set
+     */
+    public boolean addImportInfo(YangNode curNode, JavaQualifiedTypeInfo newImportInfo) {
+        if (!(curNode instanceof HasJavaImportData)) {
+            throw new RuntimeException("missing import info in data model node");
+        }
+        for (JavaQualifiedTypeInfo curImportInfo : ((HasJavaImportData) curNode).getJavaImportData().getImportSet()) {
+            if (curImportInfo.getClassInfo()
+                    .contentEquals(newImportInfo.getClassInfo())) {
+                return curImportInfo.getPkgInfo()
+                        .contentEquals(newImportInfo.getPkgInfo());
+            }
+        }
+        ((HasJavaImportData) curNode).getJavaImportData().getImportSet().add(newImportInfo);
+        return true;
+    }
+}

@@ -18,12 +18,16 @@ package org.onosproject.yangutils.translator.tojava;
 
 
 import java.util.Objects;
 import java.util.Objects;
 
 
+import org.onosproject.yangutils.datamodel.YangNode;
+import org.onosproject.yangutils.datamodel.YangType;
+import org.onosproject.yangutils.translator.tojava.utils.AttributesJavaDataType;
+
 import com.google.common.base.MoreObjects;
 import com.google.common.base.MoreObjects;
 
 
 /**
 /**
  * Maintains the information about individual imports in the generated file.
  * Maintains the information about individual imports in the generated file.
  */
  */
-public class ImportInfo implements Comparable {
+public class JavaQualifiedTypeInfo implements Comparable<JavaQualifiedTypeInfo> {
 
 
     /**
     /**
      * Package location where the imported class/interface is defined.
      * Package location where the imported class/interface is defined.
@@ -38,7 +42,7 @@ public class ImportInfo implements Comparable {
     /**
     /**
      * Default constructor.
      * Default constructor.
      */
      */
-    public ImportInfo() {
+    public JavaQualifiedTypeInfo() {
     }
     }
 
 
     /**
     /**
@@ -47,6 +51,7 @@ public class ImportInfo implements Comparable {
      * @return the imported package info
      * @return the imported package info
      */
      */
     public String getPkgInfo() {
     public String getPkgInfo() {
+
         return pkgInfo;
         return pkgInfo;
     }
     }
 
 
@@ -56,6 +61,7 @@ public class ImportInfo implements Comparable {
      * @param pkgInfo the imported package info
      * @param pkgInfo the imported package info
      */
      */
     public void setPkgInfo(String pkgInfo) {
     public void setPkgInfo(String pkgInfo) {
+
         this.pkgInfo = pkgInfo;
         this.pkgInfo = pkgInfo;
     }
     }
 
 
@@ -65,6 +71,7 @@ public class ImportInfo implements Comparable {
      * @return the imported class/interface info
      * @return the imported class/interface info
      */
      */
     public String getClassInfo() {
     public String getClassInfo() {
+
         return classInfo;
         return classInfo;
     }
     }
 
 
@@ -74,21 +81,187 @@ public class ImportInfo implements Comparable {
      * @param classInfo the imported class/interface info
      * @param classInfo the imported class/interface info
      */
      */
     public void setClassInfo(String classInfo) {
     public void setClassInfo(String classInfo) {
+
         this.classInfo = classInfo;
         this.classInfo = classInfo;
     }
     }
 
 
+    /**
+     * Get the import info for an attribute, which needs to be used for code
+     * generation for import or for qualified access.
+     *
+     * @param curNode current data model node for which the java file is being
+     *            generated.
+     * @param attrType type of attribute being added, it will be null, when the
+     *            child class is added as an attribute
+     * @param attributeName name of the attribute being added, it will used in
+     *            import info for child class.
+     * @param isListAttr is the added attribute going to be used as a list
+     * @return return the import info for this attribute
+     */
+    public static JavaQualifiedTypeInfo getQualifiedTypeInfoOfLeafAttribute(YangNode curNode,
+            YangType<?> attrType, String attributeName,
+            boolean isListAttr) {
+
+        JavaQualifiedTypeInfo importInfo = new JavaQualifiedTypeInfo();
+
+        if (attrType == null) {
+            throw new RuntimeException("missing data type of leaf " + attributeName);
+        }
+
+        /*
+         * Current leaves holder is adding a leaf info as a attribute to the
+         * current class.
+         */
+        String className = AttributesJavaDataType.getJavaImportClass(attrType, isListAttr);
+        if (className != null) {
+            /*
+             * Corresponding to the attribute type a class needs to be imported,
+             * since it can be a derived type or a usage of wrapper classes.
+             */
+            importInfo.setClassInfo(className);
+            String classPkg = AttributesJavaDataType.getJavaImportPackage(attrType, isListAttr, className);
+            if (classPkg == null) {
+                throw new RuntimeException("import package cannot be null when the class is used");
+            }
+            importInfo.setPkgInfo(classPkg);
+        } else {
+            /*
+             * The attribute does not need a class to be imported, for example
+             * built in java types.
+             */
+            String dataTypeName = AttributesJavaDataType.getJavaDataType(attrType);
+            if (dataTypeName == null) {
+                throw new RuntimeException("not supported data type");
+            }
+            importInfo.setClassInfo(dataTypeName);
+        }
+        return importInfo;
+    }
+
+    /**
+     * Get the import info for an attribute, which needs to be used for code
+     * generation for import or for qualified access.
+     *
+     * @param curNode current data model node for which the java file is being
+     *            generated.
+     * @param attributeName name of the attribute being added, it will used in
+     *            import info for child class.
+     * @param isListAttr is the added attribute going to be used as a list
+     * @return return the import info for this attribute
+     */
+    public static JavaQualifiedTypeInfo getQualifiedTypeInfoOfCurNode(YangNode curNode,
+            String attributeName, boolean isListAttr) {
+
+        JavaQualifiedTypeInfo importInfo = new JavaQualifiedTypeInfo();
+
+        if (!(curNode instanceof HasJavaFileInfo)) {
+            throw new RuntimeException("missing java file information to get the package details "
+                    + "of attribute corresponding to child node");
+        }
+        /*
+         * The scenario when we need to add the child class as an attribute in
+         * the current class. The child class is in the package of the current
+         * classes package with current classes name.
+         */
+        importInfo.setClassInfo(attributeName);
+        importInfo.setPkgInfo((((HasJavaFileInfo) curNode).getJavaFileInfo().getPackage() + "."
+                + ((HasJavaFileInfo) curNode).getJavaFileInfo().getJavaName()).toLowerCase());
+
+        return importInfo;
+    }
+
+    /**
+     * Get if the attribute needs to be accessed in a qualified manner or not,
+     * if it needs to be imported, then the same needs to be done.
+     *
+     * @param curNode current cache of the data model node for which java file
+     *            is bing generated
+     * @param importInfo import info for the current attribute being added
+     * @return status of the qualified access to the attribute
+     */
+    public static boolean getIsQualifiedAccessOrAddToImportList(YangNode curNode,
+            JavaQualifiedTypeInfo importInfo) {
+
+        boolean isImportPkgEqualCurNodePkg;
+        if (!(curNode instanceof HasJavaFileInfo)) {
+            throw new RuntimeException("missing java file info for getting the qualified access");
+        }
+        if (importInfo.getClassInfo().contentEquals(
+                ((HasJavaFileInfo) curNode).getJavaFileInfo().getJavaName())) {
+            /*
+             * if the current class name is same as the attribute class name,
+             * then the attribute must be accessed in a qualified manner.
+             */
+            return true;
+        } else if (importInfo.getPkgInfo() != null) {
+            /*
+             * If the attribute type is having the package info, it is contender
+             * for import list and also need to check if it needs to be a
+             * qualified access.
+             */
+            isImportPkgEqualCurNodePkg = isImportPkgEqualCurNodePkg(curNode, importInfo);
+            if (!isImportPkgEqualCurNodePkg) {
+                /*
+                 * If the package of the attribute added is not same as the
+                 * current class package, then it must either be imported for
+                 * access or it must be a qualified access.
+                 */
+                if (!(curNode instanceof HasJavaImportData)) {
+                    /*
+                     * If the current data model node is not supposed to import
+                     * data, then this is a usage issue and needs to be fixed.
+                     */
+                    throw new RuntimeException("Current node needs to support Imports");
+                }
+
+                boolean isImportAdded = ((HasJavaImportData) curNode).getJavaImportData()
+                        .addImportInfo(curNode, importInfo);
+                if (!isImportAdded) {
+                    /*
+                     * If the attribute type info is not imported, then it must
+                     * be a qualified access.
+                     */
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+
+    /**
+     * Check if the import info is same as the package of the current generated
+     * java file.
+     *
+     * @param curNode Java identifier of the current data model node
+     * @param importInfo import info for an attribute
+     * @return true if the import info is same as the current nodes package
+     *         false otherwise
+     */
+    public static boolean isImportPkgEqualCurNodePkg(
+            YangNode curNode, JavaQualifiedTypeInfo importInfo) {
+
+        if (!(curNode instanceof HasJavaFileInfo)) {
+            throw new RuntimeException("missing java file info for the data model node");
+        }
+        return ((HasJavaFileInfo) curNode).getJavaFileInfo().getPackage()
+                .contentEquals(importInfo.getPkgInfo()
+                        + "." + importInfo.getClassInfo());
+    }
+
     @Override
     @Override
     public int hashCode() {
     public int hashCode() {
+
         return Objects.hash(pkgInfo, classInfo);
         return Objects.hash(pkgInfo, classInfo);
     }
     }
 
 
     @Override
     @Override
     public boolean equals(Object obj) {
     public boolean equals(Object obj) {
+
         if (this == obj) {
         if (this == obj) {
             return true;
             return true;
         }
         }
-        if (obj instanceof ImportInfo) {
-            ImportInfo other = (ImportInfo) obj;
+        if (obj instanceof JavaQualifiedTypeInfo) {
+            JavaQualifiedTypeInfo other = (JavaQualifiedTypeInfo) obj;
             return Objects.equals(pkgInfo, other.pkgInfo) &&
             return Objects.equals(pkgInfo, other.pkgInfo) &&
                     Objects.equals(classInfo, other.classInfo);
                     Objects.equals(classInfo, other.classInfo);
         }
         }
@@ -101,7 +274,8 @@ public class ImportInfo implements Comparable {
      * @param importInfo matched import
      * @param importInfo matched import
      * @return if equal or not
      * @return if equal or not
      */
      */
-    public boolean exactMatch(ImportInfo importInfo) {
+    public boolean exactMatch(JavaQualifiedTypeInfo importInfo) {
+
         return equals(importInfo)
         return equals(importInfo)
                 && Objects.equals(pkgInfo, importInfo.getPkgInfo())
                 && Objects.equals(pkgInfo, importInfo.getPkgInfo())
                 && Objects.equals(classInfo, importInfo.getClassInfo());
                 && Objects.equals(classInfo, importInfo.getClassInfo());
@@ -109,6 +283,7 @@ public class ImportInfo implements Comparable {
 
 
     @Override
     @Override
     public String toString() {
     public String toString() {
+
         return MoreObjects.toStringHelper(getClass())
         return MoreObjects.toStringHelper(getClass())
                 .add("pkgInfo", pkgInfo)
                 .add("pkgInfo", pkgInfo)
                 .add("classInfo", classInfo).toString();
                 .add("classInfo", classInfo).toString();
@@ -117,16 +292,11 @@ public class ImportInfo implements Comparable {
     /**
     /**
      * Check that there is no 2 objects with the same class name.
      * Check that there is no 2 objects with the same class name.
      *
      *
-     * @param o compared import info.
+     * @param other compared import info.
      */
      */
     @Override
     @Override
-    public int compareTo(Object o) {
-        ImportInfo other;
-        if (o instanceof ImportInfo) {
-            other = (ImportInfo) o;
-        } else {
-            return -1;
-        }
+    public int compareTo(JavaQualifiedTypeInfo other) {
+
         return getClassInfo().compareTo(other.getClassInfo());
         return getClassInfo().compareTo(other.getClassInfo());
     }
     }
 
 

+/*
+ * Copyright 2016 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.javamodel;
+
+import java.io.IOException;
+
+import org.onosproject.yangutils.datamodel.YangAugment;
+import org.onosproject.yangutils.translator.tojava.HasJavaFileInfo;
+import org.onosproject.yangutils.translator.tojava.HasJavaImportData;
+import org.onosproject.yangutils.translator.tojava.HasTempJavaCodeFragmentFiles;
+import org.onosproject.yangutils.translator.tojava.JavaCodeGenerator;
+import org.onosproject.yangutils.translator.tojava.JavaFileInfo;
+import org.onosproject.yangutils.translator.tojava.JavaImportData;
+import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFiles;
+
+import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_INTERFACE_WITH_BUILDER;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCamelCase;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCaptialCase;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCurNodePackage;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getPackageDirPathFromJavaJPackage;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getAbsolutePackagePath;
+
+/**
+ * Augment information extended to support java code generation.
+ */
+public class YangJavaAugment extends YangAugment
+        implements JavaCodeGenerator, HasJavaFileInfo,
+        HasJavaImportData, HasTempJavaCodeFragmentFiles {
+
+    /**
+     * Contains the information of the java file being generated.
+     */
+    private JavaFileInfo javaFileInfo;
+
+    /**
+     * Contains information of the imports to be inserted in the java file
+     * generated.
+     */
+    private JavaImportData javaImportData;
+
+    /**
+     * File handle to maintain temporary java code fragments as per the code
+     * snippet types.
+     */
+    private TempJavaCodeFragmentFiles tempFileHandle;
+
+    /**
+     * Default constructor.
+     */
+    public YangJavaAugment() {
+        super();
+        setJavaFileInfo(new JavaFileInfo());
+        setJavaImportData(new JavaImportData());
+        getJavaFileInfo().setGeneratedFileTypes(GENERATE_INTERFACE_WITH_BUILDER);
+    }
+
+    /**
+     * Get the generated java file information.
+     *
+     * @return generated java file information
+     */
+    @Override
+    public JavaFileInfo getJavaFileInfo() {
+
+        if (javaFileInfo == null) {
+            throw new RuntimeException("Missing java info in java datamodel node");
+        }
+        return javaFileInfo;
+    }
+
+    /**
+     * Set the java file info object.
+     *
+     * @param javaInfo java file info object
+     */
+    @Override
+    public void setJavaFileInfo(JavaFileInfo javaInfo) {
+
+        javaFileInfo = javaInfo;
+    }
+
+    /**
+     * Get the data of java imports to be included in generated file.
+     *
+     * @return data of java imports to be included in generated file
+     */
+    @Override
+    public JavaImportData getJavaImportData() {
+
+        return javaImportData;
+    }
+
+    /**
+     * Set the data of java imports to be included in generated file.
+     *
+     * @param javaImportData data of java imports to be included in generated
+     *            file
+     */
+    @Override
+    public void setJavaImportData(JavaImportData javaImportData) {
+
+        this.javaImportData = javaImportData;
+    }
+
+    /**
+     * Get the temporary file handle.
+     *
+     * @return temporary file handle
+     */
+    @Override
+    public TempJavaCodeFragmentFiles getTempJavaCodeFragmentFiles() {
+
+        if (tempFileHandle == null) {
+            throw new RuntimeException("missing temp file hand for current node "
+                    + getJavaFileInfo().getJavaName());
+        }
+        return tempFileHandle;
+    }
+
+    /**
+     * Set temporary file handle.
+     *
+     * @param fileHandle temporary file handle
+     */
+    @Override
+    public void setTempJavaCodeFragmentFiles(TempJavaCodeFragmentFiles fileHandle) {
+
+        tempFileHandle = fileHandle;
+    }
+
+    /**
+     * Prepare the information for java code generation corresponding to YANG
+     * augment info.
+     *
+     * @param codeGenDir code generation directory
+     * @throws IOException IO operation fail
+     */
+    @Override
+    public void generateCodeEntry(String codeGenDir) throws IOException {
+
+        getJavaFileInfo().setJavaName(getCaptialCase(getCamelCase(getName())));
+        getJavaFileInfo().setPackage(getCurNodePackage(this));
+        getJavaFileInfo().setPackageFilePath(
+                getPackageDirPathFromJavaJPackage(getJavaFileInfo().getPackage()));
+        getJavaFileInfo().setBaseCodeGenPath(codeGenDir);
+
+        String absloutePath = getAbsolutePackagePath(
+                getJavaFileInfo().getBaseCodeGenPath(),
+                getJavaFileInfo().getPackageFilePath());
+
+        setTempJavaCodeFragmentFiles(new TempJavaCodeFragmentFiles(
+                getJavaFileInfo().getGeneratedFileTypes(), absloutePath,
+                getJavaFileInfo().getJavaName()));
+
+        getTempJavaCodeFragmentFiles().addCurNodeLeavesInfoToTempFiles(this);
+
+        getTempJavaCodeFragmentFiles().addCurNodeInfoInParentTempFile(this, false);
+    }
+
+    /**
+     * Create a java file using the YANG grouping info.
+     */
+    @Override
+    public void generateCodeExit() {
+        // TODO Auto-generated method stub
+
+    }
+}

+/*
+ * Copyright 2016 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.javamodel;
+
+import java.io.IOException;
+
+import org.onosproject.yangutils.datamodel.YangCase;
+import org.onosproject.yangutils.translator.tojava.HasJavaFileInfo;
+import org.onosproject.yangutils.translator.tojava.HasJavaImportData;
+import org.onosproject.yangutils.translator.tojava.HasTempJavaCodeFragmentFiles;
+import org.onosproject.yangutils.translator.tojava.JavaCodeGenerator;
+import org.onosproject.yangutils.translator.tojava.JavaFileInfo;
+import org.onosproject.yangutils.translator.tojava.JavaImportData;
+import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFiles;
+
+import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_INTERFACE_WITH_BUILDER;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCamelCase;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCaptialCase;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCurNodePackage;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getPackageDirPathFromJavaJPackage;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getAbsolutePackagePath;
+
+/**
+ * Case information extended to support java code generation.
+ */
+public class YangJavaCase extends YangCase
+        implements JavaCodeGenerator, HasJavaFileInfo,
+        HasJavaImportData, HasTempJavaCodeFragmentFiles {
+
+    /**
+     * Contains the information of the java file being generated.
+     */
+    private JavaFileInfo javaFileInfo;
+
+    /**
+     * Contains information of the imports to be inserted in the java file
+     * generated.
+     */
+    private JavaImportData javaImportData;
+
+    /**
+     * File handle to maintain temporary java code fragments as per the code
+     * snippet types.
+     */
+    private TempJavaCodeFragmentFiles tempFileHandle;
+
+    /**
+     * Default constructor.
+     */
+    public YangJavaCase() {
+        super();
+        setJavaFileInfo(new JavaFileInfo());
+        setJavaImportData(new JavaImportData());
+        getJavaFileInfo().setGeneratedFileTypes(GENERATE_INTERFACE_WITH_BUILDER);
+    }
+
+    /**
+     * Get the generated java file information.
+     *
+     * @return generated java file information
+     */
+    @Override
+    public JavaFileInfo getJavaFileInfo() {
+
+        if (javaFileInfo == null) {
+            throw new RuntimeException("Missing java info in java datamodel node");
+        }
+        return javaFileInfo;
+    }
+
+    /**
+     * Set the java file info object.
+     *
+     * @param javaInfo java file info object
+     */
+    @Override
+    public void setJavaFileInfo(JavaFileInfo javaInfo) {
+
+        javaFileInfo = javaInfo;
+    }
+
+    /**
+     * Get the data of java imports to be included in generated file.
+     *
+     * @return data of java imports to be included in generated file
+     */
+    @Override
+    public JavaImportData getJavaImportData() {
+
+        return javaImportData;
+    }
+
+    /**
+     * Set the data of java imports to be included in generated file.
+     *
+     * @param javaImportData data of java imports to be included in generated
+     *            file
+     */
+    @Override
+    public void setJavaImportData(JavaImportData javaImportData) {
+
+        this.javaImportData = javaImportData;
+    }
+
+    /**
+     * Get the temporary file handle.
+     *
+     * @return temporary file handle
+     */
+    @Override
+    public TempJavaCodeFragmentFiles getTempJavaCodeFragmentFiles() {
+
+        if (tempFileHandle == null) {
+            throw new RuntimeException("missing temp file hand for current node "
+                    + getJavaFileInfo().getJavaName());
+        }
+        return tempFileHandle;
+    }
+
+    /**
+     * Set temporary file handle.
+     *
+     * @param fileHandle temporary file handle
+     */
+    @Override
+    public void setTempJavaCodeFragmentFiles(TempJavaCodeFragmentFiles fileHandle) {
+
+        tempFileHandle = fileHandle;
+    }
+
+    /**
+     * Prepare the information for java code generation corresponding to YANG
+     * case info.
+     *
+     * @param codeGenDir code generation directory
+     * @throws IOException IO operation fail
+     */
+    @Override
+    public void generateCodeEntry(String codeGenDir) throws IOException {
+
+        getJavaFileInfo().setJavaName(getCaptialCase(getCamelCase(getName())));
+        getJavaFileInfo().setPackage(getCurNodePackage(this));
+        getJavaFileInfo().setPackageFilePath(
+                getPackageDirPathFromJavaJPackage(getJavaFileInfo().getPackage()));
+        getJavaFileInfo().setBaseCodeGenPath(codeGenDir);
+
+        String absloutePath = getAbsolutePackagePath(
+                getJavaFileInfo().getBaseCodeGenPath(),
+                getJavaFileInfo().getPackageFilePath());
+
+        setTempJavaCodeFragmentFiles(new TempJavaCodeFragmentFiles(
+                getJavaFileInfo().getGeneratedFileTypes(), absloutePath,
+                getJavaFileInfo().getJavaName()));
+
+        getTempJavaCodeFragmentFiles().addCurNodeLeavesInfoToTempFiles(this);
+
+        getTempJavaCodeFragmentFiles().addCurNodeInfoInParentTempFile(this, false);
+    }
+
+    /**
+     * Create a java file using the YANG grouping info.
+     */
+    @Override
+    public void generateCodeExit() {
+        // TODO Auto-generated method stub
+
+    }
+}

+/*
+ * Copyright 2016 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.javamodel;
+
+import java.io.IOException;
+
+import org.onosproject.yangutils.datamodel.YangChoice;
+import org.onosproject.yangutils.translator.tojava.HasJavaFileInfo;
+import org.onosproject.yangutils.translator.tojava.HasJavaImportData;
+import org.onosproject.yangutils.translator.tojava.HasTempJavaCodeFragmentFiles;
+import org.onosproject.yangutils.translator.tojava.JavaCodeGenerator;
+import org.onosproject.yangutils.translator.tojava.JavaFileInfo;
+import org.onosproject.yangutils.translator.tojava.JavaImportData;
+import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFiles;
+
+import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_INTERFACE_WITH_BUILDER;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCamelCase;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCaptialCase;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCurNodePackage;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getPackageDirPathFromJavaJPackage;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getAbsolutePackagePath;
+
+/**
+ * Choice information extended to support java code generation.
+ */
+public class YangJavaChoice extends YangChoice
+        implements JavaCodeGenerator, HasJavaFileInfo,
+        HasJavaImportData, HasTempJavaCodeFragmentFiles {
+
+    /**
+     * Contains the information of the java file being generated.
+     */
+    private JavaFileInfo javaFileInfo;
+
+    /**
+     * Contains information of the imports to be inserted in the java file
+     * generated.
+     */
+    private JavaImportData javaImportData;
+
+    /**
+     * File handle to maintain temporary java code fragments as per the code
+     * snippet types.
+     */
+    private TempJavaCodeFragmentFiles tempFileHandle;
+
+    /**
+     * Default constructor.
+     */
+    public YangJavaChoice() {
+        super();
+        setJavaFileInfo(new JavaFileInfo());
+        setJavaImportData(new JavaImportData());
+        getJavaFileInfo().setGeneratedFileTypes(GENERATE_INTERFACE_WITH_BUILDER);
+    }
+
+    /**
+     * Get the generated java file information.
+     *
+     * @return generated java file information
+     */
+    @Override
+    public JavaFileInfo getJavaFileInfo() {
+
+        if (javaFileInfo == null) {
+            throw new RuntimeException("Missing java info in java datamodel node");
+        }
+        return javaFileInfo;
+    }
+
+    /**
+     * Set the java file info object.
+     *
+     * @param javaInfo java file info object
+     */
+    @Override
+    public void setJavaFileInfo(JavaFileInfo javaInfo) {
+
+        javaFileInfo = javaInfo;
+    }
+
+    /**
+     * Get the data of java imports to be included in generated file.
+     *
+     * @return data of java imports to be included in generated file
+     */
+    @Override
+    public JavaImportData getJavaImportData() {
+
+        return javaImportData;
+    }
+
+    /**
+     * Set the data of java imports to be included in generated file.
+     *
+     * @param javaImportData data of java imports to be included in generated
+     *            file
+     */
+    @Override
+    public void setJavaImportData(JavaImportData javaImportData) {
+
+        this.javaImportData = javaImportData;
+    }
+
+    /**
+     * Get the temporary file handle.
+     *
+     * @return temporary file handle
+     */
+    @Override
+    public TempJavaCodeFragmentFiles getTempJavaCodeFragmentFiles() {
+
+        if (tempFileHandle == null) {
+            throw new RuntimeException("missing temp file hand for current node "
+                    + getJavaFileInfo().getJavaName());
+        }
+        return tempFileHandle;
+    }
+
+    /**
+     * Set temporary file handle.
+     *
+     * @param fileHandle temporary file handle
+     */
+    @Override
+    public void setTempJavaCodeFragmentFiles(TempJavaCodeFragmentFiles fileHandle) {
+
+        tempFileHandle = fileHandle;
+    }
+
+    /**
+     * Prepare the information for java code generation corresponding to YANG
+     * case info.
+     *
+     * @param codeGenDir code generation directory
+     * @throws IOException IO operation fail
+     */
+    @Override
+    public void generateCodeEntry(String codeGenDir) throws IOException {
+
+        getJavaFileInfo().setJavaName(getCaptialCase(getCamelCase(getName())));
+        getJavaFileInfo().setPackage(getCurNodePackage(this));
+        getJavaFileInfo().setPackageFilePath(
+                getPackageDirPathFromJavaJPackage(getJavaFileInfo().getPackage()));
+        getJavaFileInfo().setBaseCodeGenPath(codeGenDir);
+
+        String absloutePath = getAbsolutePackagePath(
+                getJavaFileInfo().getBaseCodeGenPath(),
+                getJavaFileInfo().getPackageFilePath());
+
+        setTempJavaCodeFragmentFiles(new TempJavaCodeFragmentFiles(
+                getJavaFileInfo().getGeneratedFileTypes(), absloutePath,
+                getJavaFileInfo().getJavaName()));
+
+        //        TODO:getTempJavaCodeFragmentFiles().addCurNodeLeavesInfoToTempFiles(this);
+
+        getTempJavaCodeFragmentFiles().addCurNodeInfoInParentTempFile(this, false);
+    }
+
+    /**
+     * Create a java file using the YANG grouping info.
+     */
+    @Override
+    public void generateCodeExit() {
+        // TODO Auto-generated method stub
+
+    }
+}

+/*
+ * Copyright 2016 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.javamodel;
+
+import java.io.IOException;
+
+import org.onosproject.yangutils.datamodel.YangContainer;
+import org.onosproject.yangutils.translator.tojava.HasJavaFileInfo;
+import org.onosproject.yangutils.translator.tojava.HasJavaImportData;
+import org.onosproject.yangutils.translator.tojava.HasTempJavaCodeFragmentFiles;
+import org.onosproject.yangutils.translator.tojava.JavaCodeGenerator;
+import org.onosproject.yangutils.translator.tojava.JavaFileInfo;
+import org.onosproject.yangutils.translator.tojava.JavaImportData;
+import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFiles;
+
+import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_INTERFACE_WITH_BUILDER;
+import static org.onosproject.yangutils.translator.tojava.utils.GenerateJavaCodeExitBuilder.generateJavaFile;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCamelCase;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCaptialCase;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCurNodePackage;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getPackageDirPathFromJavaJPackage;
+import static org.onosproject.yangutils.utils.io.impl.FileSystemUtil.createPackage;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getAbsolutePackagePath;
+
+/**
+ * Container information extended to support java code generation.
+ */
+public class YangJavaContainer extends YangContainer
+        implements JavaCodeGenerator, HasJavaFileInfo,
+        HasJavaImportData, HasTempJavaCodeFragmentFiles {
+
+    /**
+     * Contains the information of the java file being generated.
+     */
+    private JavaFileInfo javaFileInfo;
+
+    /**
+     * Contains information of the imports to be inserted in the java file
+     * generated.
+     */
+    private JavaImportData javaImportData;
+
+    /**
+     * File handle to maintain temporary java code fragments as per the code
+     * snippet types.
+     */
+    private TempJavaCodeFragmentFiles tempFileHandle;
+
+    /**
+     * Default constructor.
+     */
+    public YangJavaContainer() {
+        super();
+        setJavaFileInfo(new JavaFileInfo());
+        setJavaImportData(new JavaImportData());
+        getJavaFileInfo().setGeneratedFileTypes(GENERATE_INTERFACE_WITH_BUILDER);
+    }
+
+    /**
+     * Get the generated java file information.
+     *
+     * @return generated java file information
+     */
+    @Override
+    public JavaFileInfo getJavaFileInfo() {
+
+        if (javaFileInfo == null) {
+            throw new RuntimeException("Missing java info in java datamodel node");
+        }
+        return javaFileInfo;
+    }
+
+    /**
+     * Set the java file info object.
+     *
+     * @param javaInfo java file info object
+     */
+    @Override
+    public void setJavaFileInfo(JavaFileInfo javaInfo) {
+
+        javaFileInfo = javaInfo;
+    }
+
+    /**
+     * Get the data of java imports to be included in generated file.
+     *
+     * @return data of java imports to be included in generated file
+     */
+    @Override
+    public JavaImportData getJavaImportData() {
+
+        return javaImportData;
+    }
+
+    /**
+     * Set the data of java imports to be included in generated file.
+     *
+     * @param javaImportData data of java imports to be included in generated
+     *            file
+     */
+    @Override
+    public void setJavaImportData(JavaImportData javaImportData) {
+
+        this.javaImportData = javaImportData;
+    }
+
+    /**
+     * Get the temporary file handle.
+     *
+     * @return temporary file handle
+     */
+    @Override
+    public TempJavaCodeFragmentFiles getTempJavaCodeFragmentFiles() {
+
+        if (tempFileHandle == null) {
+            throw new RuntimeException("Missing temp file handle for current node "
+                    + getJavaFileInfo().getJavaName());
+        }
+        return tempFileHandle;
+    }
+
+    /**
+     * Set temporary file handle.
+     *
+     * @param fileHandle temporary file handle
+     */
+    @Override
+    public void setTempJavaCodeFragmentFiles(TempJavaCodeFragmentFiles fileHandle) {
+
+        tempFileHandle = fileHandle;
+    }
+
+    /**
+     * Prepare the information for java code generation corresponding to YANG
+     * container info.
+     *
+     * @param codeGenDir code generation directory
+     * @throws IOException IO operation fail
+     */
+    @Override
+    public void generateCodeEntry(String codeGenDir) throws IOException {
+
+        getJavaFileInfo().setJavaName(getCaptialCase(getCamelCase(getName())));
+        getJavaFileInfo().setPackage(getCurNodePackage(this));
+        getJavaFileInfo().setPackageFilePath(
+                getPackageDirPathFromJavaJPackage(getJavaFileInfo().getPackage()));
+        getJavaFileInfo().setBaseCodeGenPath(codeGenDir);
+
+        String absloutePath = getAbsolutePackagePath(
+                getJavaFileInfo().getBaseCodeGenPath(),
+                getJavaFileInfo().getPackageFilePath());
+        createPackage(absloutePath, getName());
+        setTempJavaCodeFragmentFiles(new TempJavaCodeFragmentFiles(
+                getJavaFileInfo().getGeneratedFileTypes(), absloutePath,
+                getJavaFileInfo().getJavaName()));
+
+        getTempJavaCodeFragmentFiles().addCurNodeLeavesInfoToTempFiles(this);
+
+        getTempJavaCodeFragmentFiles().addCurNodeInfoInParentTempFile(this, false);
+    }
+
+    /**
+     * Create a java file using the YANG grouping info.
+     *
+     * @throws IOException IO operation fail
+     */
+    @Override
+    public void generateCodeExit() throws IOException {
+
+        generateJavaFile(GENERATE_INTERFACE_WITH_BUILDER, this);
+        getTempJavaCodeFragmentFiles().close();
+    }
+
+}

+/*
+ * Copyright 2016 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.javamodel;
+
+import java.io.IOException;
+
+import org.onosproject.yangutils.datamodel.YangGrouping;
+import org.onosproject.yangutils.translator.tojava.HasJavaFileInfo;
+import org.onosproject.yangutils.translator.tojava.HasJavaImportData;
+import org.onosproject.yangutils.translator.tojava.HasTempJavaCodeFragmentFiles;
+import org.onosproject.yangutils.translator.tojava.JavaCodeGenerator;
+import org.onosproject.yangutils.translator.tojava.JavaFileInfo;
+import org.onosproject.yangutils.translator.tojava.JavaImportData;
+import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFiles;
+
+import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_INTERFACE_WITH_BUILDER;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCamelCase;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCaptialCase;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCurNodePackage;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getPackageDirPathFromJavaJPackage;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getAbsolutePackagePath;
+
+/**
+ * Grouping information extended to support java code generation.
+ */
+public class YangJavaGrouping extends YangGrouping
+        implements JavaCodeGenerator, HasJavaFileInfo,
+        HasJavaImportData, HasTempJavaCodeFragmentFiles {
+
+    /**
+     * Contains the information of the java file being generated.
+     */
+    private JavaFileInfo javaFileInfo;
+
+    /**
+     * Contains information of the imports to be inserted in the java file
+     * generated.
+     */
+    private JavaImportData javaImportData;
+
+    /**
+     * File handle to maintain temporary java code fragments as per the code
+     * snippet types.
+     */
+    private TempJavaCodeFragmentFiles tempFileHandle;
+
+    /**
+     * Default constructor.
+     */
+    public YangJavaGrouping() {
+        super();
+        setJavaFileInfo(new JavaFileInfo());
+        setJavaImportData(new JavaImportData());
+        getJavaFileInfo().setGeneratedFileTypes(GENERATE_INTERFACE_WITH_BUILDER);
+    }
+
+    /**
+     * Get the generated java file information.
+     *
+     * @return generated java file information
+     */
+    @Override
+    public JavaFileInfo getJavaFileInfo() {
+
+        if (javaFileInfo == null) {
+            throw new RuntimeException("Missing java info in java datamodel node");
+        }
+        return javaFileInfo;
+    }
+
+    /**
+     * Set the java file info object.
+     *
+     * @param javaInfo java file info object
+     */
+    @Override
+    public void setJavaFileInfo(JavaFileInfo javaInfo) {
+
+        javaFileInfo = javaInfo;
+    }
+
+    /**
+     * Get the data of java imports to be included in generated file.
+     *
+     * @return data of java imports to be included in generated file
+     */
+    @Override
+    public JavaImportData getJavaImportData() {
+
+        return javaImportData;
+    }
+
+    /**
+     * Set the data of java imports to be included in generated file.
+     *
+     * @param javaImportData data of java imports to be included in generated
+     *            file
+     */
+    @Override
+    public void setJavaImportData(JavaImportData javaImportData) {
+
+        this.javaImportData = javaImportData;
+    }
+
+    /**
+     * Get the temporary file handle.
+     *
+     * @return temporary file handle
+     */
+    @Override
+    public TempJavaCodeFragmentFiles getTempJavaCodeFragmentFiles() {
+
+        if (tempFileHandle == null) {
+            throw new RuntimeException("missing temp file hand for current node "
+                    + getJavaFileInfo().getJavaName());
+        }
+        return tempFileHandle;
+    }
+
+    /**
+     * Set temporary file handle.
+     *
+     * @param fileHandle temporary file handle
+     */
+    @Override
+    public void setTempJavaCodeFragmentFiles(TempJavaCodeFragmentFiles fileHandle) {
+
+        tempFileHandle = fileHandle;
+    }
+
+    /**
+     * Prepare the information for java code generation corresponding to YANG
+     * container info.
+     *
+     * @param codeGenDir code generation directory
+     * @throws IOException IO operation fail
+     */
+    @Override
+    public void generateCodeEntry(String codeGenDir) throws IOException {
+
+        getJavaFileInfo().setJavaName(getCaptialCase(getCamelCase(getName())));
+        getJavaFileInfo().setPackage(getCurNodePackage(this));
+        getJavaFileInfo().setPackageFilePath(
+                getPackageDirPathFromJavaJPackage(getJavaFileInfo().getPackage()));
+        getJavaFileInfo().setBaseCodeGenPath(codeGenDir);
+
+        String absloutePath = getAbsolutePackagePath(
+                getJavaFileInfo().getBaseCodeGenPath(),
+                getJavaFileInfo().getPackageFilePath());
+
+        setTempJavaCodeFragmentFiles(new TempJavaCodeFragmentFiles(
+                getJavaFileInfo().getGeneratedFileTypes(), absloutePath,
+                getJavaFileInfo().getJavaName()));
+
+        getTempJavaCodeFragmentFiles().addCurNodeLeavesInfoToTempFiles(this);
+
+        getTempJavaCodeFragmentFiles().addCurNodeInfoInParentTempFile(this, false);
+    }
+
+    /**
+     * Create a java file using the YANG grouping info.
+     */
+    @Override
+    public void generateCodeExit() {
+        // TODO Auto-generated method stub
+
+    }
+}

+/*
+ * Copyright 2016 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.javamodel;
+
+import java.io.IOException;
+
+import org.onosproject.yangutils.datamodel.YangList;
+import org.onosproject.yangutils.translator.tojava.HasJavaFileInfo;
+import org.onosproject.yangutils.translator.tojava.HasJavaImportData;
+import org.onosproject.yangutils.translator.tojava.HasTempJavaCodeFragmentFiles;
+import org.onosproject.yangutils.translator.tojava.JavaCodeGenerator;
+import org.onosproject.yangutils.translator.tojava.JavaFileInfo;
+import org.onosproject.yangutils.translator.tojava.JavaImportData;
+import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFiles;
+
+import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_INTERFACE_WITH_BUILDER;
+import static org.onosproject.yangutils.translator.tojava.utils.GenerateJavaCodeExitBuilder.generateJavaFile;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCamelCase;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCaptialCase;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCurNodePackage;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getPackageDirPathFromJavaJPackage;
+import static org.onosproject.yangutils.utils.io.impl.FileSystemUtil.createPackage;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getAbsolutePackagePath;
+
+/**
+ * YANG List information extended to support java code generation.
+ */
+public class YangJavaList extends YangList
+        implements JavaCodeGenerator, HasJavaFileInfo,
+        HasJavaImportData, HasTempJavaCodeFragmentFiles {
+
+    /**
+     * Contains the information of the java file being generated.
+     */
+    private JavaFileInfo javaFileInfo;
+
+    /**
+     * Contains information of the imports to be inserted in the java file
+     * generated.
+     */
+    private JavaImportData javaImportData;
+
+    /**
+     * File handle to maintain temporary java code fragments as per the code
+     * snippet types.
+     */
+    private TempJavaCodeFragmentFiles tempFileHandle;
+
+    /**
+     * Default constructor.
+     */
+    public YangJavaList() {
+        super();
+        setJavaFileInfo(new JavaFileInfo());
+        setJavaImportData(new JavaImportData());
+        getJavaFileInfo().setGeneratedFileTypes(GENERATE_INTERFACE_WITH_BUILDER);
+    }
+
+    /**
+     * Get the generated java file information.
+     *
+     * @return generated java file information
+     */
+    @Override
+    public JavaFileInfo getJavaFileInfo() {
+
+        if (javaFileInfo == null) {
+            throw new RuntimeException("Missing java info in java datamodel node");
+        }
+        return javaFileInfo;
+    }
+
+    /**
+     * Set the java file info object.
+     *
+     * @param javaInfo java file info object
+     */
+    @Override
+    public void setJavaFileInfo(JavaFileInfo javaInfo) {
+
+        javaFileInfo = javaInfo;
+    }
+
+    /**
+     * Get the data of java imports to be included in generated file.
+     *
+     * @return data of java imports to be included in generated file
+     */
+    @Override
+    public JavaImportData getJavaImportData() {
+
+        return javaImportData;
+    }
+
+    /**
+     * Set the data of java imports to be included in generated file.
+     *
+     * @param javaImportData data of java imports to be included in generated
+     *            file
+     */
+    @Override
+    public void setJavaImportData(JavaImportData javaImportData) {
+
+        this.javaImportData = javaImportData;
+    }
+
+    /**
+     * Get the temporary file handle.
+     *
+     * @return temporary file handle
+     */
+    @Override
+    public TempJavaCodeFragmentFiles getTempJavaCodeFragmentFiles() {
+
+        if (tempFileHandle == null) {
+            throw new RuntimeException("missing temp file hand for current node "
+                    + getJavaFileInfo().getJavaName());
+        }
+        return tempFileHandle;
+    }
+
+    /**
+     * Set temporary file handle.
+     *
+     * @param fileHandle temporary file handle
+     */
+    @Override
+    public void setTempJavaCodeFragmentFiles(TempJavaCodeFragmentFiles fileHandle) {
+
+        tempFileHandle = fileHandle;
+    }
+
+    /**
+     * Prepare the information for java code generation corresponding to YANG
+     * container info.
+     *
+     * @param codeGenDir code generation directory
+     * @throws IOException IO operation fail
+     */
+    @Override
+    public void generateCodeEntry(String codeGenDir) throws IOException {
+
+        getJavaFileInfo().setJavaName(getCaptialCase(getCamelCase(getName())));
+        getJavaFileInfo().setPackage(getCurNodePackage(this));
+        getJavaFileInfo().setPackageFilePath(
+                getPackageDirPathFromJavaJPackage(getJavaFileInfo().getPackage()));
+        getJavaFileInfo().setBaseCodeGenPath(codeGenDir);
+        String absloutePath = getAbsolutePackagePath(
+                getJavaFileInfo().getBaseCodeGenPath(),
+                getJavaFileInfo().getPackageFilePath());
+        createPackage(absloutePath, getName());
+
+        setTempJavaCodeFragmentFiles(new TempJavaCodeFragmentFiles(
+                getJavaFileInfo().getGeneratedFileTypes(), absloutePath,
+                getJavaFileInfo().getJavaName()));
+
+        getTempJavaCodeFragmentFiles().addCurNodeLeavesInfoToTempFiles(this);
+
+        getTempJavaCodeFragmentFiles().addCurNodeInfoInParentTempFile(this, true);
+    }
+
+    /**
+     * Create a java file using the YANG grouping info.
+     *
+     * @throws IOException IO operation fail
+     */
+    @Override
+    public void generateCodeExit() throws IOException {
+
+        generateJavaFile(GENERATE_INTERFACE_WITH_BUILDER, this);
+        getTempJavaCodeFragmentFiles().close();
+    }
+}

+/*
+ * Copyright 2016 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.javamodel;
+
+import java.io.IOException;
+
+import org.onosproject.yangutils.datamodel.YangModule;
+import org.onosproject.yangutils.translator.tojava.HasJavaFileInfo;
+import org.onosproject.yangutils.translator.tojava.HasJavaImportData;
+import org.onosproject.yangutils.translator.tojava.HasTempJavaCodeFragmentFiles;
+import org.onosproject.yangutils.translator.tojava.JavaCodeGenerator;
+import org.onosproject.yangutils.translator.tojava.JavaFileInfo;
+import org.onosproject.yangutils.translator.tojava.JavaImportData;
+import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFiles;
+
+import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_INTERFACE_WITH_BUILDER;
+import static org.onosproject.yangutils.translator.tojava.utils.GenerateJavaCodeExitBuilder.generateJavaFile;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCamelCase;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCaptialCase;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getPackageDirPathFromJavaJPackage;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getRootPackage;
+import static org.onosproject.yangutils.utils.io.impl.FileSystemUtil.createPackage;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getAbsolutePackagePath;
+
+/**
+ * Module information extended to support java code generation.
+ */
+public class YangJavaModule extends YangModule
+        implements JavaCodeGenerator, HasJavaFileInfo,
+        HasJavaImportData, HasTempJavaCodeFragmentFiles {
+
+    /**
+     * Contains the information of the java file being generated.
+     */
+    private JavaFileInfo javaFileInfo;
+
+    /**
+     * Contains information of the imports to be inserted in the java file
+     * generated.
+     */
+    private JavaImportData javaImportData;
+
+    /**
+     * File handle to maintain temporary java code fragments as per the code
+     * snippet types.
+     */
+    private TempJavaCodeFragmentFiles tempFileHandle;
+
+    /**
+     * Create a YANG node of module type.
+     */
+    public YangJavaModule() {
+        super();
+        setJavaFileInfo(new JavaFileInfo());
+        setJavaImportData(new JavaImportData());
+        getJavaFileInfo().setGeneratedFileTypes(GENERATE_INTERFACE_WITH_BUILDER);
+    }
+
+    /**
+     * Get the generated java file information.
+     *
+     * @return generated java file information
+     */
+    @Override
+    public JavaFileInfo getJavaFileInfo() {
+
+        if (javaFileInfo == null) {
+            throw new RuntimeException("Missing java info in java datamodel node");
+        }
+        return javaFileInfo;
+    }
+
+    /**
+     * Set the java file info object.
+     *
+     * @param javaInfo java file info object
+     */
+    @Override
+    public void setJavaFileInfo(JavaFileInfo javaInfo) {
+
+        javaFileInfo = javaInfo;
+    }
+
+    /**
+     * Get the data of java imports to be included in generated file.
+     *
+     * @return data of java imports to be included in generated file
+     */
+    @Override
+    public JavaImportData getJavaImportData() {
+
+        return javaImportData;
+    }
+
+    /**
+     * Set the data of java imports to be included in generated file.
+     *
+     * @param javaImportData data of java imports to be included in generated
+     *            file
+     */
+    @Override
+    public void setJavaImportData(JavaImportData javaImportData) {
+
+        this.javaImportData = javaImportData;
+    }
+
+    /**
+     * Get the temporary file handle.
+     *
+     * @return temporary file handle
+     */
+    @Override
+    public TempJavaCodeFragmentFiles getTempJavaCodeFragmentFiles() {
+
+        if (tempFileHandle == null) {
+            throw new RuntimeException("missing temp file hand for current node "
+                    + getJavaFileInfo().getJavaName());
+        }
+        return tempFileHandle;
+    }
+
+    /**
+     * Set temporary file handle.
+     *
+     * @param fileHandle temporary file handle
+     */
+    @Override
+    public void setTempJavaCodeFragmentFiles(TempJavaCodeFragmentFiles fileHandle) {
+
+        tempFileHandle = fileHandle;
+    }
+
+    /**
+     * Generates java code for module.
+     *
+     * @param baseCodeGenDir code generation directory
+     * @throws IOException when fails to generate the source files
+     */
+    @Override
+    public void generateCodeEntry(String baseCodeGenDir) throws IOException {
+
+        getJavaFileInfo().setJavaName(getCaptialCase(getCamelCase(getName())));
+        getJavaFileInfo().setPackage(getRootPackage(getVersion(), getNameSpace().getUri(),
+                getRevision().getRevDate()));
+        getJavaFileInfo().setPackageFilePath(
+                getPackageDirPathFromJavaJPackage(getJavaFileInfo().getPackage()));
+        getJavaFileInfo().setBaseCodeGenPath(baseCodeGenDir);
+
+        String absloutePath = getAbsolutePackagePath(
+                getJavaFileInfo().getBaseCodeGenPath(),
+                getJavaFileInfo().getPackageFilePath());
+
+        createPackage(absloutePath, getName());
+        setTempJavaCodeFragmentFiles(new TempJavaCodeFragmentFiles(
+                getJavaFileInfo().getGeneratedFileTypes(), absloutePath,
+                getJavaFileInfo().getJavaName()));
+
+        getTempJavaCodeFragmentFiles().addCurNodeLeavesInfoToTempFiles(this);
+    }
+
+    @Override
+    public void generateCodeExit() throws IOException {
+
+        generateJavaFile(GENERATE_INTERFACE_WITH_BUILDER, this);
+        getTempJavaCodeFragmentFiles().close();
+        return;
+    }
+}

+/*
+ * Copyright 2016 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.javamodel;
+
+import java.io.IOException;
+
+import org.onosproject.yangutils.datamodel.YangBelongsTo;
+import org.onosproject.yangutils.datamodel.YangSubModule;
+import org.onosproject.yangutils.translator.tojava.HasJavaFileInfo;
+import org.onosproject.yangutils.translator.tojava.HasJavaImportData;
+import org.onosproject.yangutils.translator.tojava.HasTempJavaCodeFragmentFiles;
+import org.onosproject.yangutils.translator.tojava.JavaCodeGenerator;
+import org.onosproject.yangutils.translator.tojava.JavaFileInfo;
+import org.onosproject.yangutils.translator.tojava.JavaImportData;
+import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFiles;
+
+import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_INTERFACE_WITH_BUILDER;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCamelCase;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCaptialCase;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getPackageDirPathFromJavaJPackage;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getRootPackage;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getAbsolutePackagePath;
+
+/**
+ * Sub module information extended to support java code generation.
+ */
+public class YangJavaSubModule extends YangSubModule
+        implements JavaCodeGenerator, HasJavaFileInfo,
+        HasJavaImportData, HasTempJavaCodeFragmentFiles {
+
+    /**
+     * Contains the information of the java file being generated.
+     */
+    private JavaFileInfo javaFileInfo;
+
+    /**
+     * Contains information of the imports to be inserted in the java file
+     * generated.
+     */
+    private JavaImportData javaImportData;
+
+    /**
+     * File handle to maintain temporary java code fragments as per the code
+     * snippet types.
+     */
+    private TempJavaCodeFragmentFiles tempFileHandle;
+
+    /**
+     * Default constructor.
+     */
+    public YangJavaSubModule() {
+        super();
+        setJavaFileInfo(new JavaFileInfo());
+        setJavaImportData(new JavaImportData());
+        getJavaFileInfo().setGeneratedFileTypes(GENERATE_INTERFACE_WITH_BUILDER);
+    }
+
+    /**
+     * Get the generated java file information.
+     *
+     * @return generated java file information
+     */
+    @Override
+    public JavaFileInfo getJavaFileInfo() {
+        if (javaFileInfo == null) {
+            throw new RuntimeException("Missing java info in java datamodel node");
+        }
+        return javaFileInfo;
+    }
+
+    /**
+     * Set the java file info object.
+     *
+     * @param javaInfo java file info object
+     */
+    @Override
+    public void setJavaFileInfo(JavaFileInfo javaInfo) {
+        javaFileInfo = javaInfo;
+    }
+
+    /**
+     * Get the data of java imports to be included in generated file.
+     *
+     * @return data of java imports to be included in generated file
+     */
+    @Override
+    public JavaImportData getJavaImportData() {
+        return javaImportData;
+    }
+
+    /**
+     * Set the data of java imports to be included in generated file.
+     *
+     * @param javaImportData data of java imports to be included in generated
+     *            file
+     */
+    @Override
+    public void setJavaImportData(JavaImportData javaImportData) {
+        this.javaImportData = javaImportData;
+    }
+
+    /**
+     * Get the temporary file handle.
+     *
+     * @return temporary file handle
+     */
+    @Override
+    public TempJavaCodeFragmentFiles getTempJavaCodeFragmentFiles() {
+        if (tempFileHandle == null) {
+            throw new RuntimeException("missing temp file hand for current node "
+                    + getJavaFileInfo().getJavaName());
+        }
+        return tempFileHandle;
+    }
+
+    /**
+     * Set temporary file handle.
+     *
+     * @param fileHandle temporary file handle
+     */
+    @Override
+    public void setTempJavaCodeFragmentFiles(TempJavaCodeFragmentFiles fileHandle) {
+        tempFileHandle = fileHandle;
+    }
+
+    /**
+     * Get the name space of the module to which the sub module belongs to.
+     *
+     * @param belongsToInfo Information of the module to which the sub module
+     *            belongs
+     * @return the name space string of the module.
+     */
+    private String getNameSpaceFromModule(YangBelongsTo belongsToInfo) {
+        // TODO Auto-generated method stub
+        return "";
+    }
+
+    /**
+     * Prepare the information for java code generation corresponding to YANG
+     * container info.
+     *
+     * @param codeGenDir code generation directory
+     * @throws IOException IO operation fail
+     */
+    @Override
+    public void generateCodeEntry(String codeGenDir) throws IOException {
+        getJavaFileInfo().setJavaName(getCaptialCase(getCamelCase(getName())));
+        getJavaFileInfo().setPackage(getRootPackage(getVersion(),
+                getNameSpaceFromModule(getBelongsTo()),
+                getRevision().getRevDate()));
+        getJavaFileInfo().setPackageFilePath(
+                getPackageDirPathFromJavaJPackage(getJavaFileInfo().getPackage()));
+        getJavaFileInfo().setBaseCodeGenPath(codeGenDir);
+
+        String absloutePath = getAbsolutePackagePath(
+                getJavaFileInfo().getBaseCodeGenPath(),
+                getJavaFileInfo().getPackageFilePath());
+
+        setTempJavaCodeFragmentFiles(new TempJavaCodeFragmentFiles(
+                getJavaFileInfo().getGeneratedFileTypes(), absloutePath,
+                getJavaFileInfo().getJavaName()));
+
+        getTempJavaCodeFragmentFiles().addCurNodeLeavesInfoToTempFiles(this);
+    }
+
+    /**
+     * Create a java file using the YANG grouping info.
+     */
+    @Override
+    public void generateCodeExit() {
+        // TODO Auto-generated method stub
+
+    }
+}

+/*
+ * Copyright 2016 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.javamodel;
+
+import org.onosproject.yangutils.datamodel.YangTypeDef;
+import org.onosproject.yangutils.translator.tojava.HasJavaFileInfo;
+import org.onosproject.yangutils.translator.tojava.HasJavaImportData;
+import org.onosproject.yangutils.translator.tojava.JavaCodeGenerator;
+import org.onosproject.yangutils.translator.tojava.JavaFileInfo;
+import org.onosproject.yangutils.translator.tojava.JavaImportData;
+
+import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_INTERFACE_WITH_BUILDER;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCamelCase;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCaptialCase;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCurNodePackage;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getPackageDirPathFromJavaJPackage;
+
+/**
+ * Type define information extended to support java code generation.
+ */
+public class YangJavaTypeDef extends YangTypeDef
+        implements JavaCodeGenerator, HasJavaFileInfo, HasJavaImportData {
+
+    /**
+     * Contains the information of the java file being generated.
+     */
+    private JavaFileInfo javaFileInfo;
+
+    /**
+     * Contains information of the imports to be inserted in the java file
+     * generated.
+     */
+    private JavaImportData javaImportData;
+
+    /**
+     * Default constructor.
+     */
+    public YangJavaTypeDef() {
+        super();
+        setJavaFileInfo(new JavaFileInfo());
+        setJavaImportData(new JavaImportData());
+        getJavaFileInfo().setGeneratedFileTypes(GENERATE_INTERFACE_WITH_BUILDER);
+    }
+
+    /**
+     * Get the generated java file information.
+     *
+     * @return generated java file information
+     */
+    @Override
+    public JavaFileInfo getJavaFileInfo() {
+        if (javaFileInfo == null) {
+            throw new RuntimeException("Missing java info in java datamodel node");
+        }
+        return javaFileInfo;
+    }
+
+    /**
+     * Set the java file info object.
+     *
+     * @param javaInfo java file info object
+     */
+    @Override
+    public void setJavaFileInfo(JavaFileInfo javaInfo) {
+        javaFileInfo = javaInfo;
+    }
+
+    /**
+     * Get the data of java imports to be included in generated file.
+     *
+     * @return data of java imports to be included in generated file
+     */
+    @Override
+    public JavaImportData getJavaImportData() {
+        return javaImportData;
+    }
+
+    /**
+     * Set the data of java imports to be included in generated file.
+     *
+     * @param javaImportData data of java imports to be included in generated
+     *            file
+     */
+    @Override
+    public void setJavaImportData(JavaImportData javaImportData) {
+        this.javaImportData = javaImportData;
+    }
+
+    /**
+     * Prepare the information for java code generation corresponding to YANG
+     * container info.
+     *
+     * @param codeGenDir code generation directory
+     */
+    @Override
+    public void generateCodeEntry(String codeGenDir) {
+        getJavaFileInfo().setJavaName(getCaptialCase(getCamelCase(getName())));
+        getJavaFileInfo().setPackage(getCurNodePackage(this));
+        getJavaFileInfo().setPackageFilePath(
+                getPackageDirPathFromJavaJPackage(getJavaFileInfo().getPackage()));
+        getJavaFileInfo().setBaseCodeGenPath(codeGenDir);
+        // TODO: generate type define temporary files
+    }
+
+    /**
+     * Create a java file using the YANG grouping info.
+     */
+    @Override
+    public void generateCodeExit() {
+        // TODO Auto-generated method stub
+
+    }
+
+}

+/*
+ * Copyright 2016 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.javamodel;
+
+import org.onosproject.yangutils.datamodel.YangUses;
+import org.onosproject.yangutils.translator.tojava.HasJavaFileInfo;
+import org.onosproject.yangutils.translator.tojava.HasJavaImportData;
+import org.onosproject.yangutils.translator.tojava.JavaCodeGenerator;
+import org.onosproject.yangutils.translator.tojava.JavaFileInfo;
+import org.onosproject.yangutils.translator.tojava.JavaImportData;
+
+import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_INTERFACE_WITH_BUILDER;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCamelCase;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCaptialCase;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCurNodePackage;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getPackageDirPathFromJavaJPackage;
+
+/**
+ * Uses information extended to support java code generation.
+ */
+public class YangJavaUses extends YangUses implements JavaCodeGenerator, HasJavaFileInfo, HasJavaImportData {
+
+    /**
+     * Contains the information of the java file being generated.
+     */
+    private JavaFileInfo javaFileInfo;
+
+    /**
+     * Contains information of the imports to be inserted in the java file
+     * generated.
+     */
+    private JavaImportData javaImportData;
+
+    /**
+     * Default constructor.
+     */
+    public YangJavaUses() {
+        super();
+        setJavaFileInfo(new JavaFileInfo());
+        setJavaImportData(new JavaImportData());
+        getJavaFileInfo().setGeneratedFileTypes(GENERATE_INTERFACE_WITH_BUILDER);
+    }
+
+    /**
+     * Get the generated java file information.
+     *
+     * @return generated java file information
+     */
+    @Override
+    public JavaFileInfo getJavaFileInfo() {
+        if (javaFileInfo == null) {
+            throw new RuntimeException("Missing java info in java datamodel node");
+        }
+        return javaFileInfo;
+    }
+
+    /**
+     * Set the java file info object.
+     *
+     * @param javaInfo java file info object
+     */
+    @Override
+    public void setJavaFileInfo(JavaFileInfo javaInfo) {
+        javaFileInfo = javaInfo;
+    }
+
+    /**
+     * Get the data of java imports to be included in generated file.
+     *
+     * @return data of java imports to be included in generated file
+     */
+    @Override
+    public JavaImportData getJavaImportData() {
+        return javaImportData;
+    }
+
+    /**
+     * Set the data of java imports to be included in generated file.
+     *
+     * @param javaImportData data of java imports to be included in generated
+     *            file
+     */
+    @Override
+    public void setJavaImportData(JavaImportData javaImportData) {
+        this.javaImportData = javaImportData;
+    }
+
+    /**
+     * Prepare the information for java code generation corresponding to YANG
+     * container info.
+     *
+     * @param codeGenDir code generation directory
+     */
+    @Override
+    public void generateCodeEntry(String codeGenDir) {
+        getJavaFileInfo().setJavaName(getCaptialCase(getCamelCase(getName())));
+        getJavaFileInfo().setPackage(getCurNodePackage(this));
+        getJavaFileInfo().setPackageFilePath(
+                getPackageDirPathFromJavaJPackage(getJavaFileInfo().getPackage()));
+        getJavaFileInfo().setBaseCodeGenPath(codeGenDir);
+        //TODO:addCurNodeLeavesInfoToTempFiles(this);
+        //TODO:addCurNodeInfoInParentTempFile(this, false);
+    }
+
+    /**
+     * Create a java file using the YANG grouping info.
+     */
+    @Override
+    public void generateCodeExit() {
+        // TODO Auto-generated method stub
+
+    }
+}

+/*
+ * Copyright 2016 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.
+ */
+
+/**
+ * Maintains application's schema mapped to java classes / interfaces.
+ */
+package org.onosproject.yangutils.translator.tojava.javamodel;

@@ -16,8 +16,12 @@
 
 
 package org.onosproject.yangutils.translator.tojava.utils;
 package org.onosproject.yangutils.translator.tojava.utils;
 
 
+import java.util.Set;
+import java.util.TreeSet;
+
 import org.onosproject.yangutils.datamodel.YangDataTypes;
 import org.onosproject.yangutils.datamodel.YangDataTypes;
 import org.onosproject.yangutils.datamodel.YangType;
 import org.onosproject.yangutils.datamodel.YangType;
+import org.onosproject.yangutils.translator.tojava.JavaQualifiedTypeInfo;
 import org.onosproject.yangutils.utils.UtilConstants;
 import org.onosproject.yangutils.utils.UtilConstants;
 
 
 /**
 /**
@@ -25,6 +29,8 @@ import org.onosproject.yangutils.utils.UtilConstants;
  */
  */
 public final class AttributesJavaDataType {
 public final class AttributesJavaDataType {
 
 
+    private static Set<JavaQualifiedTypeInfo> importInfo = new TreeSet<>();
+
     /**
     /**
      * Default constructor.
      * Default constructor.
      */
      */
@@ -32,6 +38,24 @@ public final class AttributesJavaDataType {
     }
     }
 
 
     /**
     /**
+     * Returns import info.
+     *
+     * @return import info
+     */
+    public static Set<JavaQualifiedTypeInfo> getImportInfo() {
+        return importInfo;
+    }
+
+    /**
+     * Adds import info to the import info set.
+     *
+     * @param importData import info
+     */
+    public static void addImportInfo(JavaQualifiedTypeInfo importData) {
+        getImportInfo().add(importData);
+    }
+
+    /**
      * Returns java type.
      * Returns java type.
      *
      *
      * @param yangType YANG type
      * @param yangType YANG type
@@ -134,7 +158,8 @@ public final class AttributesJavaDataType {
             } else if (type.equals(YangDataTypes.INSTANCE_IDENTIFIER)) {
             } else if (type.equals(YangDataTypes.INSTANCE_IDENTIFIER)) {
                 //TODO:INSTANCE_IDENTIFIER
                 //TODO:INSTANCE_IDENTIFIER
             } else if (type.equals(YangDataTypes.DERIVED)) {
             } else if (type.equals(YangDataTypes.DERIVED)) {
-                //TODO:DERIVED
+                return JavaIdentifierSyntax
+                        .getCaptialCase(JavaIdentifierSyntax.getCamelCase(yangType.getDataTypeName()));
             }
             }
         } else {
         } else {
             if (type.equals(YangDataTypes.UINT64)) {
             if (type.equals(YangDataTypes.UINT64)) {
@@ -160,7 +185,8 @@ public final class AttributesJavaDataType {
             } else if (type.equals(YangDataTypes.INSTANCE_IDENTIFIER)) {
             } else if (type.equals(YangDataTypes.INSTANCE_IDENTIFIER)) {
                 //TODO:INSTANCE_IDENTIFIER
                 //TODO:INSTANCE_IDENTIFIER
             } else if (type.equals(YangDataTypes.DERIVED)) {
             } else if (type.equals(YangDataTypes.DERIVED)) {
-                //TODO:DERIVED
+                return JavaIdentifierSyntax
+                        .getCaptialCase(JavaIdentifierSyntax.getCamelCase(yangType.getDataTypeName()));
             }
             }
         }
         }
         return null;
         return null;
@@ -171,9 +197,10 @@ public final class AttributesJavaDataType {
      *
      *
      * @param yangType YANG type
      * @param yangType YANG type
      * @param isListAttr if the attribute is of list type
      * @param isListAttr if the attribute is of list type
+     * @param classInfo java import class info
      * @return java import package
      * @return java import package
      */
      */
-    public static String getJavaImportPackage(YangType<?> yangType, boolean isListAttr) {
+    public static String getJavaImportPackage(YangType<?> yangType, boolean isListAttr, String classInfo) {
         YangDataTypes type = yangType.getDataType();
         YangDataTypes type = yangType.getDataType();
 
 
         if (isListAttr) {
         if (isListAttr) {
@@ -208,7 +235,11 @@ public final class AttributesJavaDataType {
             } else if (type.equals(YangDataTypes.INSTANCE_IDENTIFIER)) {
             } else if (type.equals(YangDataTypes.INSTANCE_IDENTIFIER)) {
                 //TODO:INSTANCE_IDENTIFIER
                 //TODO:INSTANCE_IDENTIFIER
             } else if (type.equals(YangDataTypes.DERIVED)) {
             } else if (type.equals(YangDataTypes.DERIVED)) {
-                //TODO:DERIVED
+                for (JavaQualifiedTypeInfo imports : getImportInfo()) {
+                    if (imports.getClassInfo().equals(classInfo)) {
+                        return imports.getPkgInfo();
+                    }
+                }
             }
             }
         } else {
         } else {
 
 
@@ -235,7 +266,11 @@ public final class AttributesJavaDataType {
             } else if (type.equals(YangDataTypes.INSTANCE_IDENTIFIER)) {
             } else if (type.equals(YangDataTypes.INSTANCE_IDENTIFIER)) {
                 //TODO:INSTANCE_IDENTIFIER
                 //TODO:INSTANCE_IDENTIFIER
             } else if (type.equals(YangDataTypes.DERIVED)) {
             } else if (type.equals(YangDataTypes.DERIVED)) {
-                //TODO:DERIVED
+                for (JavaQualifiedTypeInfo imports : getImportInfo()) {
+                    if (imports.getClassInfo().equals(classInfo)) {
+                        return imports.getPkgInfo();
+                    }
+                }
             }
             }
         }
         }
         return null;
         return null;