[ONOS-4711] Removed cyclic dependencies

Change-Id: I9ffea9a1a1b72f6ed3a23c0edb04cfc37bd8e48e
(cherry picked from commit 8a5af14f)

@@ -31,11 +31,11 @@ import org.onosproject.yangutils.datamodel.YangRpc;
 import org.onosproject.yangutils.datamodel.YangType;
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
 
+
 /**
  * Represents utilities for data model tree.
  */
 public final class DataModelUtils {
-
     /**
      * Creates a new data model tree utility.
      */

@@ -17,7 +17,7 @@
 package org.onosproject.yangutils.linker;
 
 import java.util.Set;
-import org.onosproject.yangutils.plugin.manager.YangFileInfo;
+import org.onosproject.yangutils.datamodel.YangNode;
 
 /**
  * Abstraction of entity which provides linking service of YANG files.
@@ -28,7 +28,7 @@ public interface YangLinker {
      * Resolve the import and include dependencies for a given resolution
      * information.
      *
-     * @param yangFileInfoSet set of all dependent YANG files
+     * @param yangNodeSet set of all dependent YANG nodes
      */
-    void resolveDependencies(Set<YangFileInfo> yangFileInfoSet);
+    void resolveDependencies(Set<YangNode> yangNodeSet);
 }

@@ -25,7 +25,6 @@ import org.onosproject.yangutils.datamodel.YangSubModule;
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
 import org.onosproject.yangutils.linker.YangLinker;
 import org.onosproject.yangutils.linker.exceptions.LinkerException;
-import org.onosproject.yangutils.plugin.manager.YangFileInfo;
 
 import static org.onosproject.yangutils.utils.UtilConstants.NEW_LINE;
 
@@ -53,53 +52,51 @@ public class YangLinkerManager
     /**
      * Creates YANG nodes set.
      *
-     * @param yangFileInfoSet YANG file information set
+     * @param yangNodeSet YANG node information set
      */
-    public void createYangNodeSet(Set<YangFileInfo> yangFileInfoSet) {
-        for (YangFileInfo yangFileInfo : yangFileInfoSet) {
-            getYangNodeSet().add(yangFileInfo.getRootNode());
-        }
+    public void createYangNodeSet(Set<YangNode> yangNodeSet) {
+        getYangNodeSet().addAll(yangNodeSet);
     }
 
     @Override
-    public void resolveDependencies(Set<YangFileInfo> yangFileInfoSet) {
+    public void resolveDependencies(Set<YangNode> yangNodeSet) {
 
         // Create YANG node set.
-        createYangNodeSet(yangFileInfoSet);
+        createYangNodeSet(yangNodeSet);
 
         // Carry out linking of sub module with module.
-        linkSubModulesToParentModule(yangFileInfoSet);
+        linkSubModulesToParentModule(yangNodeSet);
 
         // Add references to import list.
-        addRefToYangFilesImportList(yangFileInfoSet);
+        addRefToYangFilesImportList(yangNodeSet);
 
         // Add reference to include list.
-        addRefToYangFilesIncludeList(yangFileInfoSet);
+        addRefToYangFilesIncludeList(yangNodeSet);
 
         // TODO check for circular import/include.
 
         // Carry out inter-file linking.
-        processInterFileLinking(yangFileInfoSet);
+        processInterFileLinking(yangNodeSet);
     }
 
     /**
      * Resolves sub-module linking by linking sub module with parent module.
      *
-     * @param yangFileInfoSet set of YANG files info
+     * @param yangNodeSet set of YANG files info
      * @throws LinkerException fails to link sub-module to parent module
      */
-    public void linkSubModulesToParentModule(Set<YangFileInfo> yangFileInfoSet)
+    public void linkSubModulesToParentModule(Set<YangNode> yangNodeSet)
             throws LinkerException {
-        for (YangFileInfo yangFileInfo : yangFileInfoSet) {
-            YangNode yangNode = yangFileInfo.getRootNode();
+        for (YangNode yangNode : yangNodeSet) {
             if (yangNode instanceof YangSubModule) {
                 try {
                     ((YangSubModule) yangNode).linkWithModule(getYangNodeSet());
                 } catch (DataModelException e) {
-                    String errorInfo = "YANG file error: " + yangFileInfo.getYangFileName() + " at line: "
+                    String errorInfo = "YANG file error: " + yangNode.getName() + " at line: "
                             + e.getLineNumber() + " at position: " + e.getCharPositionInLine() + NEW_LINE
                             + e.getMessage();
                     throw new LinkerException(errorInfo);
+                    // TODO add file path in exception message in util manager.
                 }
             }
         }
@@ -108,20 +105,20 @@ public class YangLinkerManager
     /**
      * Adds imported node information to the import list.
      *
-     * @param yangFileInfoSet set of YANG files info
+     * @param yangNodeSet set of YANG files info
      * @throws LinkerException fails to find imported module
      */
-    public void addRefToYangFilesImportList(Set<YangFileInfo> yangFileInfoSet) throws LinkerException {
-        for (YangFileInfo yangFileInfo : yangFileInfoSet) {
-            YangNode yangNode = yangFileInfo.getRootNode();
+    public void addRefToYangFilesImportList(Set<YangNode> yangNodeSet) throws LinkerException {
+        for (YangNode yangNode : yangNodeSet) {
             if (yangNode instanceof YangReferenceResolver) {
                 try {
                     ((YangReferenceResolver) yangNode).addReferencesToImportList(getYangNodeSet());
                 } catch (DataModelException e) {
-                    String errorInfo = "Error in file: " + yangFileInfo.getYangFileName() + " at line: "
+                    String errorInfo = "Error in file: " + yangNode.getName() + " at line: "
                             + e.getLineNumber() + " at position: " + e.getCharPositionInLine() + NEW_LINE
                             + e.getMessage();
                     throw new LinkerException(errorInfo);
+                    // TODO add file path in exception message in util manager.
                 }
             }
         }
@@ -130,20 +127,20 @@ public class YangLinkerManager
     /**
      * Adds included node information to the include list.
      *
-     * @param yangFileInfoSet set of YANG files info
+     * @param yangNodeSet set of YANG files info
      * @throws LinkerException fails to find included sub-module
      */
-    public void addRefToYangFilesIncludeList(Set<YangFileInfo> yangFileInfoSet) throws LinkerException {
-        for (YangFileInfo yangFileInfo : yangFileInfoSet) {
-            YangNode yangNode = yangFileInfo.getRootNode();
+    public void addRefToYangFilesIncludeList(Set<YangNode> yangNodeSet) throws LinkerException {
+        for (YangNode yangNode : yangNodeSet) {
             if (yangNode instanceof YangReferenceResolver) {
                 try {
                     ((YangReferenceResolver) yangNode).addReferencesToIncludeList(getYangNodeSet());
                 } catch (DataModelException e) {
-                    String errorInfo = "Error in file: " + yangFileInfo.getYangFileName() + " at line: "
+                    String errorInfo = "Error in file: " + yangNode.getName() + " at line: "
                             + e.getLineNumber() + " at position: " + e.getCharPositionInLine() + NEW_LINE
                             + e.getMessage();
                     throw new LinkerException(errorInfo);
+                    // TODO add file path in exception message in util manager.
                 }
             }
         }
@@ -152,20 +149,21 @@ public class YangLinkerManager
     /**
      * Processes inter file linking for type and uses.
      *
-     * @param yangFileInfoSet set of YANG files info
+     * @param yangNodeSet set of YANG files info
      * @throws LinkerException a violation in linker execution
      */
-    public void processInterFileLinking(Set<YangFileInfo> yangFileInfoSet)
+    public void processInterFileLinking(Set<YangNode> yangNodeSet)
             throws LinkerException {
-        for (YangFileInfo yangFileInfo : yangFileInfoSet) {
+        for (YangNode yangNode : yangNodeSet) {
             try {
-                ((YangReferenceResolver) yangFileInfo.getRootNode()).resolveInterFileLinking(ResolvableType.YANG_USES);
-                ((YangReferenceResolver) yangFileInfo.getRootNode())
+                ((YangReferenceResolver) yangNode).resolveInterFileLinking(ResolvableType.YANG_USES);
+                ((YangReferenceResolver) yangNode)
                         .resolveInterFileLinking(ResolvableType.YANG_DERIVED_DATA_TYPE);
             } catch (DataModelException e) {
-                String errorInfo = "Error in file: " + yangFileInfo.getYangFileName() + " at line: "
+                String errorInfo = "Error in file: " + yangNode.getName() + " at line: "
                         + e.getLineNumber() + " at position: " + e.getCharPositionInLine() + NEW_LINE + e.getMessage();
                 throw new LinkerException(errorInfo);
+                // TODO add file path in exception message in util manager.
             }
         }
     }

@@ -17,7 +17,6 @@
 package org.onosproject.yangutils.parser.impl;
 
 import java.io.IOException;
-
 import org.antlr.v4.runtime.ANTLRFileStream;
 import org.antlr.v4.runtime.ANTLRInputStream;
 import org.antlr.v4.runtime.CommonTokenStream;

@@ -31,7 +31,7 @@ import org.onosproject.yangutils.parser.exceptions.ParserException;
 import org.onosproject.yangutils.parser.impl.TreeWalkListener;
 
 import static org.onosproject.yangutils.datamodel.utils.YangConstructType.AUGMENT_DATA;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCapitalCase;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCapitalCase;
 
 /**
  * Represents a utility which provides listener utilities augment node.

+/*
+ * Copyright 2016-present Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.yangutils.plugin.manager;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+import java.nio.file.Files;
+import java.nio.file.StandardCopyOption;
+import java.util.ArrayList;
+import java.util.Enumeration;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Set;
+import java.util.jar.JarEntry;
+import java.util.jar.JarFile;
+import org.apache.maven.artifact.repository.ArtifactRepository;
+import org.apache.maven.model.Dependency;
+import org.apache.maven.model.Resource;
+import org.apache.maven.project.MavenProject;
+import org.onosproject.yangutils.datamodel.YangNode;
+import org.slf4j.Logger;
+import org.sonatype.plexus.build.incremental.BuildContext;
+
+import static org.onosproject.yangutils.utils.UtilConstants.HYPHEN;
+import static org.onosproject.yangutils.utils.UtilConstants.JAR;
+import static org.onosproject.yangutils.utils.UtilConstants.PERIOD;
+import static org.onosproject.yangutils.utils.UtilConstants.SLASH;
+import static org.onosproject.yangutils.utils.UtilConstants.TEMP;
+import static org.onosproject.yangutils.utils.UtilConstants.YANG_RESOURCES;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCamelCase;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getPackageDirPathFromJavaJPackage;
+import static org.slf4j.LoggerFactory.getLogger;
+
+/**
+ * Represents YANG plugin utilities.
+ */
+public final class YangPluginUtils {
+
+    private static final Logger log = getLogger(YangPluginUtils.class);
+
+    private static final String TARGET_RESOURCE_PATH = SLASH + TEMP + SLASH + YANG_RESOURCES + SLASH;
+
+    private static final String SERIALIZED_FILE_EXTENSION = ".ser";
+
+    private YangPluginUtils() {
+    }
+
+    /**
+     * Adds generated source directory to the compilation root.
+     *
+     * @param source  directory
+     * @param project current maven project
+     * @param context current build context
+     */
+    public static void addToCompilationRoot(String source, MavenProject project, BuildContext context) {
+        project.addCompileSourceRoot(source);
+        context.refresh(project.getBasedir());
+        log.info("Source directory added to compilation root: " + source);
+    }
+
+    /**
+     * Copies YANG files to the current project's output directory.
+     *
+     * @param yangFileInfo list of YANG files
+     * @param outputDir    project's output directory
+     * @param project      maven project
+     * @throws IOException when fails to copy files to destination resource directory
+     */
+    public static void copyYangFilesToTarget(Set<YangFileInfo> yangFileInfo, String outputDir, MavenProject project)
+            throws IOException {
+
+        List<File> files = getListOfFile(yangFileInfo);
+
+        String path = outputDir + TARGET_RESOURCE_PATH;
+        File targetDir = new File(path);
+        targetDir.mkdirs();
+
+        for (File file : files) {
+            Files.copy(file.toPath(),
+                    new File(path + file.getName()).toPath(),
+                    StandardCopyOption.REPLACE_EXISTING);
+        }
+        addToProjectResource(outputDir + SLASH + TEMP + SLASH, project);
+    }
+
+    /**
+     * Provides a list of files from list of strings.
+     *
+     * @param yangFileInfo set of yang file information
+     * @return list of files
+     */
+    private static List<File> getListOfFile(Set<YangFileInfo> yangFileInfo) {
+        List<File> files = new ArrayList<>();
+        Iterator<YangFileInfo> yangFileIterator = yangFileInfo.iterator();
+        while (yangFileIterator.hasNext()) {
+            YangFileInfo yangFile = yangFileIterator.next();
+            if (yangFile.isForTranslator()) {
+                files.add(new File(yangFile.getYangFileName()));
+            }
+        }
+        return files;
+    }
+
+    /**
+     * Serializes data-model.
+     *
+     * @param directory   base directory for serialized files
+     * @param fileInfoSet YANG file info set
+     * @param project     maven project
+     * @param operation   true if need to add to resource
+     * @throws IOException when fails to do IO operations
+     */
+    public static void serializeDataModel(String directory, Set<YangFileInfo> fileInfoSet,
+                                          MavenProject project, boolean operation) throws IOException {
+
+        String serFileDirPath = directory + TARGET_RESOURCE_PATH;
+        File dir = new File(serFileDirPath);
+        dir.mkdirs();
+
+        if (operation) {
+            addToProjectResource(directory + SLASH + TEMP + SLASH, project);
+        }
+
+        for (YangFileInfo fileInfo : fileInfoSet) {
+
+            String serFileName = serFileDirPath + getCamelCase(fileInfo.getRootNode().getName(), null)
+                    + SERIALIZED_FILE_EXTENSION;
+            fileInfo.setSerializedFile(serFileName);
+            FileOutputStream fileOutputStream = new FileOutputStream(serFileName);
+            ObjectOutputStream objectOutputStream = new ObjectOutputStream(fileOutputStream);
+            objectOutputStream.writeObject(fileInfo.getRootNode());
+            objectOutputStream.close();
+            fileOutputStream.close();
+        }
+    }
+
+    /**
+     * Returns de-serializes YANG data-model nodes.
+     *
+     * @param serailizedfileInfoSet YANG file info set
+     * @return de-serializes YANG data-model nodes
+     * @throws IOException when fails do IO operations
+     */
+    public static List<YangNode> deSerializeDataModel(List<String> serailizedfileInfoSet) throws IOException {
+
+        List<YangNode> nodes = new ArrayList<>();
+        for (String fileInfo : serailizedfileInfoSet) {
+            YangNode node = null;
+            try {
+                FileInputStream fileInputStream = new FileInputStream(fileInfo);
+                ObjectInputStream objectInputStream = new ObjectInputStream(fileInputStream);
+                node = (YangNode) objectInputStream.readObject();
+                nodes.add(node);
+                objectInputStream.close();
+                fileInputStream.close();
+            } catch (IOException | ClassNotFoundException e) {
+                throw new IOException(fileInfo + " not found.");
+            }
+        }
+        return nodes;
+    }
+
+    /**
+     * Returns list of jar path.
+     *
+     * @param project         maven project
+     * @param localRepository local repository
+     * @param remoteRepos     remote repository
+     * @return list of jar paths
+     */
+    private static List<String> resolveDependecyJarPath(MavenProject project, ArtifactRepository localRepository,
+                                                        List<ArtifactRepository> remoteRepos) {
+
+        StringBuilder path = new StringBuilder();
+        List<String> jarPaths = new ArrayList<>();
+        for (Dependency dependency : project.getDependencies()) {
+
+            path.append(localRepository.getBasedir());
+            path.append(SLASH);
+            path.append(getPackageDirPathFromJavaJPackage(dependency.getGroupId()));
+            path.append(SLASH);
+            path.append(dependency.getArtifactId());
+            path.append(SLASH);
+            path.append(dependency.getVersion());
+            path.append(SLASH);
+            path.append(dependency.getArtifactId() + HYPHEN + dependency.getVersion() + PERIOD + JAR);
+            File jarFile = new File(path.toString());
+            if (jarFile.exists()) {
+                jarPaths.add(path.toString());
+            }
+            path.delete(0, path.length());
+        }
+
+        for (ArtifactRepository repo : remoteRepos) {
+            // TODO: add resolver for remote repo.
+        }
+        return jarPaths;
+    }
+
+    /**
+     * Resolves inter jar dependencies.
+     *
+     * @param project         current maven project
+     * @param localRepository local maven repository
+     * @param remoteRepos     list of remote repository
+     * @param directory       directory for serialized files
+     * @return list of resolved datamodel nodes
+     * @throws IOException when fails to do IO operations
+     */
+    public static List<YangNode> resolveInterJarDependencies(MavenProject project, ArtifactRepository localRepository,
+                                                             List<ArtifactRepository> remoteRepos, String directory)
+            throws IOException {
+
+        List<String> dependeciesJarPaths = resolveDependecyJarPath(project, localRepository, remoteRepos);
+        List<YangNode> resolvedDataModelNodes = new ArrayList<>();
+        for (String dependecy : dependeciesJarPaths) {
+            resolvedDataModelNodes.addAll(deSerializeDataModel(parseJarFile(dependecy, directory)));
+        }
+        return resolvedDataModelNodes;
+    }
+
+    /**
+     * Parses jar file and returns list of serialized file names.
+     *
+     * @param jarFile   jar file to be parsed
+     * @param directory directory for keeping the searized files
+     * @return list of serialized files
+     * @throws IOException when fails to do IO operations
+     */
+    public static List<String> parseJarFile(String jarFile, String directory)
+            throws IOException {
+
+        List<String> serailizedFiles = new ArrayList<>();
+        JarFile jar = new JarFile(jarFile);
+        Enumeration<?> enumEntries = jar.entries();
+
+        File serializedFileDir = new File(directory);
+        serializedFileDir.mkdirs();
+        while (enumEntries.hasMoreElements()) {
+            JarEntry file = (JarEntry) enumEntries.nextElement();
+            if (file.getName().endsWith(SERIALIZED_FILE_EXTENSION)) {
+                if (file.getName().contains(SLASH)) {
+                    String[] strArray = file.getName().split(SLASH);
+                    String tempPath = "";
+                    for (int i = 0; i < strArray.length - 1; i++) {
+                        tempPath = SLASH + tempPath + SLASH + strArray[i];
+                    }
+                    File dir = new File(directory + tempPath);
+                    dir.mkdirs();
+                }
+                File serailizedFile = new File(directory + SLASH + file.getName());
+                if (file.isDirectory()) {
+                    serailizedFile.mkdirs();
+                    continue;
+                }
+                InputStream inputStream = jar.getInputStream(file);
+
+                FileOutputStream fileOutputStream = new FileOutputStream(serailizedFile);
+                while (inputStream.available() > 0) {
+                    fileOutputStream.write(inputStream.read());
+                }
+                fileOutputStream.close();
+                inputStream.close();
+                serailizedFiles.add(serailizedFile.toString());
+            }
+        }
+        jar.close();
+        return serailizedFiles;
+    }
+
+    /* Adds directory to resources of project */
+    private static void addToProjectResource(String dir, MavenProject project) {
+        Resource rsc = new Resource();
+        rsc.setDirectory(dir);
+        project.addResource(rsc);
+    }
+}

@@ -21,7 +21,6 @@ import java.util.HashSet;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Set;
-
 import org.apache.maven.artifact.repository.ArtifactRepository;
 import org.apache.maven.plugin.AbstractMojo;
 import org.apache.maven.plugin.MojoExecutionException;
@@ -37,25 +36,25 @@ import org.onosproject.yangutils.linker.impl.YangLinkerManager;
 import org.onosproject.yangutils.parser.YangUtilsParser;
 import org.onosproject.yangutils.parser.exceptions.ParserException;
 import org.onosproject.yangutils.parser.impl.YangUtilsParserManager;
-import org.onosproject.yangutils.translator.tojava.utils.YangPluginConfig;
-import org.onosproject.yangutils.translator.tojava.utils.YangToJavaNamingConflictUtil;
 import org.onosproject.yangutils.utils.io.impl.YangFileScanner;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
+import org.onosproject.yangutils.utils.io.impl.YangToJavaNamingConflictUtil;
 import org.sonatype.plexus.build.incremental.BuildContext;
 
 import static org.apache.maven.plugins.annotations.LifecyclePhase.GENERATE_SOURCES;
 import static org.apache.maven.plugins.annotations.ResolutionScope.COMPILE;
+import static org.onosproject.yangutils.plugin.manager.YangPluginUtils.addToCompilationRoot;
+import static org.onosproject.yangutils.plugin.manager.YangPluginUtils.copyYangFilesToTarget;
+import static org.onosproject.yangutils.plugin.manager.YangPluginUtils.resolveInterJarDependencies;
+import static org.onosproject.yangutils.plugin.manager.YangPluginUtils.serializeDataModel;
 import static org.onosproject.yangutils.translator.tojava.JavaCodeGeneratorUtil.generateJavaCode;
 import static org.onosproject.yangutils.translator.tojava.JavaCodeGeneratorUtil.translatorErrorHandler;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getPackageDirPathFromJavaJPackage;
 import static org.onosproject.yangutils.utils.UtilConstants.DEFAULT_BASE_PKG;
 import static org.onosproject.yangutils.utils.UtilConstants.NEW_LINE;
 import static org.onosproject.yangutils.utils.UtilConstants.SLASH;
-import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.addToCompilationRoot;
-import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.copyYangFilesToTarget;
 import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.deleteDirectory;
 import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getDirectory;
-import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.resolveInterJarDependencies;
-import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.serializeDataModel;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getPackageDirPathFromJavaJPackage;
 
 /**
  * Represents ONOS YANG utility maven plugin.
@@ -75,6 +74,8 @@ public class YangUtilManager
     private YangLinker yangLinker = new YangLinkerManager();
     private YangFileInfo curYangFileInfo = new YangFileInfo();
 
+    private Set<YangNode> yangNodeSet = new HashSet<>();
+
     private static final String DEFAULT_PKG = SLASH + getPackageDirPathFromJavaJPackage(DEFAULT_BASE_PKG);
 
     /**
@@ -217,6 +218,15 @@ public class YangUtilManager
     }
 
     /**
+     * Returns the YANG node set.
+     *
+     * @return YANG node set
+     */
+    public Set<YangNode> getYangNodeSet() {
+        return yangNodeSet;
+    }
+
+    /**
      * Resolved inter-jar dependencies.
      *
      * @throws IOException when fails to do IO operations
@@ -244,10 +254,11 @@ public class YangUtilManager
      */
     public void resolveDependenciesUsingLinker()
             throws MojoExecutionException {
+        createYangNodeSet();
         for (YangFileInfo yangFileInfo : getYangFileInfoSet()) {
             setCurYangFileInfo(yangFileInfo);
             try {
-                yangLinker.resolveDependencies(getYangFileInfoSet());
+                yangLinker.resolveDependencies(getYangNodeSet());
             } catch (LinkerException e) {
                 throw new MojoExecutionException(e.getMessage());
             }
@@ -255,6 +266,15 @@ public class YangUtilManager
     }
 
     /**
+     * Creates YANG nodes set.
+     */
+    public void createYangNodeSet() {
+        for (YangFileInfo yangFileInfo : getYangFileInfoSet()) {
+            getYangNodeSet().add(yangFileInfo.getRootNode());
+        }
+    }
+
+    /**
      * Parses all the provided YANG files and generates YANG data model tree.
      *
      * @throws IOException a violation in IO

@@ -17,7 +17,7 @@
 package org.onosproject.yangutils.translator.tojava;
 
 import org.onosproject.yangutils.translator.exception.TranslatorException;
-import org.onosproject.yangutils.translator.tojava.utils.YangPluginConfig;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 /**
  * Abstraction of an entity which provides Code generator functionalities.

@@ -14,10 +14,7 @@
  * limitations under the License.
  */
 
-package org.onosproject.yangutils.translator.tojava.javamodel;
-
-import org.onosproject.yangutils.translator.tojava.JavaFileInfoContainer;
-import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFilesContainer;
+package org.onosproject.yangutils.translator.tojava;
 
 /**
  * Represents YANG java info containing interface for java code generator, java

@@ -20,7 +20,7 @@ import java.io.IOException;
 
 import org.onosproject.yangutils.datamodel.YangNode;
 import org.onosproject.yangutils.translator.exception.TranslatorException;
-import org.onosproject.yangutils.translator.tojava.utils.YangPluginConfig;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 import static org.onosproject.yangutils.translator.tojava.TraversalType.CHILD;
 import static org.onosproject.yangutils.translator.tojava.TraversalType.PARENT;

@@ -18,7 +18,7 @@ package org.onosproject.yangutils.translator.tojava;
 
 import java.io.Serializable;
 
-import org.onosproject.yangutils.translator.tojava.utils.YangPluginConfig;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 /**
  * Represents cached java file handle, which supports the addition of member attributes and

@@ -22,13 +22,13 @@ import java.util.Objects;
 import org.onosproject.yangutils.datamodel.YangNode;
 import org.onosproject.yangutils.translator.exception.TranslatorException;
 import org.onosproject.yangutils.translator.tojava.javamodel.JavaLeafInfoContainer;
-import org.onosproject.yangutils.translator.tojava.utils.AttributesJavaDataType;
-import org.onosproject.yangutils.translator.tojava.utils.YangToJavaNamingConflictUtil;
+import org.onosproject.yangutils.translator.tojava.javamodel.AttributesJavaDataType;
+import org.onosproject.yangutils.utils.io.impl.YangToJavaNamingConflictUtil;
 
 import com.google.common.base.MoreObjects;
 
-import static org.onosproject.yangutils.translator.tojava.utils.AttributesJavaDataType.getJavaImportClass;
-import static org.onosproject.yangutils.translator.tojava.utils.AttributesJavaDataType.getJavaImportPackage;
+import static org.onosproject.yangutils.translator.tojava.javamodel.AttributesJavaDataType.getJavaImportClass;
+import static org.onosproject.yangutils.translator.tojava.javamodel.AttributesJavaDataType.getJavaImportPackage;
 
 /**
  * Represents the information about individual imports in the generated file.

@@ -19,7 +19,7 @@ package org.onosproject.yangutils.translator.tojava;
 import java.io.File;
 import java.io.IOException;
 
-import org.onosproject.yangutils.translator.tojava.utils.YangPluginConfig;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.CONSTRUCTOR_IMPL_MASK;
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getConstructor;

@@ -21,7 +21,7 @@ import java.io.IOException;
 import org.onosproject.yangutils.datamodel.YangNode;
 import org.onosproject.yangutils.datamodel.YangTypeHolder;
 import org.onosproject.yangutils.translator.exception.TranslatorException;
-import org.onosproject.yangutils.translator.tojava.utils.YangPluginConfig;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_ENUM_CLASS;
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_INTERFACE_WITH_BUILDER;

@@ -28,19 +28,19 @@ import org.onosproject.yangutils.datamodel.YangEnumeration;
 import org.onosproject.yangutils.datamodel.YangNode;
 import org.onosproject.yangutils.translator.exception.TranslatorException;
 import org.onosproject.yangutils.translator.tojava.javamodel.YangJavaType;
-import org.onosproject.yangutils.translator.tojava.utils.YangPluginConfig;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.ENUM_IMPL_MASK;
 import static org.onosproject.yangutils.translator.tojava.JavaAttributeInfo.getAttributeInfoForTheData;
 import static org.onosproject.yangutils.translator.tojava.utils.JavaCodeSnippetGen.generateEnumAttributeString;
 import static org.onosproject.yangutils.translator.tojava.utils.JavaFileGenerator.generateEnumClassFile;
 import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getEnumJavaAttribute;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getPrefixForIdentifier;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getPrefixForIdentifier;
 import static org.onosproject.yangutils.translator.tojava.utils.TempJavaCodeFragmentFilesUtils.closeFile;
 import static org.onosproject.yangutils.utils.UtilConstants.EMPTY_STRING;
 import static org.onosproject.yangutils.utils.UtilConstants.REGEX_FOR_FIRST_DIGIT;
 import static org.onosproject.yangutils.utils.UtilConstants.YANG_AUTO_PREFIX;
-import static org.onosproject.yangutils.utils.io.impl.FileSystemUtil.createPackage;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.createPackage;
 
 /**
  * Represents implementation of java code fragments temporary implementations.

@@ -33,7 +33,7 @@ import org.onosproject.yangutils.translator.tojava.javamodel.YangJavaGrouping;
 import org.onosproject.yangutils.translator.tojava.javamodel.YangJavaModule;
 import org.onosproject.yangutils.translator.tojava.javamodel.YangJavaSubModule;
 import org.onosproject.yangutils.translator.tojava.utils.JavaExtendsListHolder;
-import org.onosproject.yangutils.translator.tojava.utils.YangPluginConfig;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.getParentNodeInGenCode;
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.BUILDER_CLASS_MASK;
@@ -55,7 +55,7 @@ import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.
 import static org.onosproject.yangutils.translator.tojava.JavaAttributeInfo.getAttributeInfoForTheData;
 import static org.onosproject.yangutils.translator.tojava.JavaQualifiedTypeInfo.getQualifiedInfoOfFromString;
 import static org.onosproject.yangutils.translator.tojava.JavaQualifiedTypeInfo.getQualifiedTypeInfoOfCurNode;
-import static org.onosproject.yangutils.translator.tojava.utils.AttributesJavaDataType.updateJavaFileInfo;
+import static org.onosproject.yangutils.translator.tojava.javamodel.AttributesJavaDataType.updateJavaFileInfo;
 import static org.onosproject.yangutils.translator.tojava.utils.JavaCodeSnippetGen.getJavaAttributeDefination;
 import static org.onosproject.yangutils.translator.tojava.utils.JavaCodeSnippetGen.getJavaClassDefClose;
 import static org.onosproject.yangutils.translator.tojava.utils.JavaFileGenerator.generateBuilderClassFile;
@@ -63,9 +63,9 @@ import static org.onosproject.yangutils.translator.tojava.utils.JavaFileGenerato
 import static org.onosproject.yangutils.translator.tojava.utils.JavaFileGenerator.generateImplClassFile;
 import static org.onosproject.yangutils.translator.tojava.utils.JavaFileGenerator.generateInterfaceFile;
 import static org.onosproject.yangutils.translator.tojava.utils.JavaFileGeneratorUtils.getFileObject;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCamelCase;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCapitalCase;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getPackageDirPathFromJavaJPackage;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCamelCase;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCapitalCase;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getPackageDirPathFromJavaJPackage;
 import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getRootPackage;
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getBuildString;
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getDefaultConstructorString;
@@ -104,7 +104,7 @@ import static org.onosproject.yangutils.utils.UtilConstants.REFERENCE_CARDINALIT
 import static org.onosproject.yangutils.utils.UtilConstants.SEMI_COLAN;
 import static org.onosproject.yangutils.utils.UtilConstants.SERVICE;
 import static org.onosproject.yangutils.utils.UtilConstants.SLASH;
-import static org.onosproject.yangutils.utils.io.impl.FileSystemUtil.createPackage;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.createPackage;
 import static org.onosproject.yangutils.utils.io.impl.FileSystemUtil.readAppendFile;
 import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.getJavaDoc;
 import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.JavaDocType.GETTER_METHOD;

@@ -25,7 +25,7 @@ import org.onosproject.yangutils.datamodel.YangNode;
 import org.onosproject.yangutils.datamodel.YangNotification;
 import org.onosproject.yangutils.translator.tojava.javamodel.YangJavaModule;
 import org.onosproject.yangutils.translator.tojava.javamodel.YangJavaSubModule;
-import org.onosproject.yangutils.translator.tojava.utils.YangPluginConfig;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_EVENT_CLASS;
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_EVENT_LISTENER_INTERFACE;
@@ -46,10 +46,10 @@ import static org.onosproject.yangutils.translator.tojava.utils.JavaFileGenerato
 import static org.onosproject.yangutils.translator.tojava.utils.JavaFileGenerator.generateManagerClassFile;
 import static org.onosproject.yangutils.translator.tojava.utils.JavaFileGenerator.generateServiceInterfaceFile;
 import static org.onosproject.yangutils.translator.tojava.utils.JavaFileGeneratorUtils.getFileObject;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCamelCase;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCapitalCase;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCamelCase;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCapitalCase;
 import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getEnumJavaAttribute;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getSmallCase;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getSmallCase;
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getGetterForClass;
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getRpcManagerMethod;
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getRpcServiceMethod;
@@ -67,7 +67,7 @@ import static org.onosproject.yangutils.utils.UtilConstants.NEW_LINE;
 import static org.onosproject.yangutils.utils.UtilConstants.RPC_INPUT_VAR_NAME;
 import static org.onosproject.yangutils.utils.UtilConstants.SLASH;
 import static org.onosproject.yangutils.utils.UtilConstants.VOID;
-import static org.onosproject.yangutils.utils.io.impl.FileSystemUtil.createPackage;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.createPackage;
 import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.generateJavaDocForRpc;
 import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.getJavaDoc;
 import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.JavaDocType.ENUM_ATTRIBUTE;

@@ -26,7 +26,7 @@ import org.onosproject.yangutils.datamodel.YangType;
 import org.onosproject.yangutils.datamodel.YangTypeHolder;
 import org.onosproject.yangutils.translator.exception.TranslatorException;
 import org.onosproject.yangutils.translator.tojava.javamodel.YangJavaType;
-import org.onosproject.yangutils.translator.tojava.utils.YangPluginConfig;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_TYPEDEF_CLASS;
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_UNION_CLASS;
@@ -36,13 +36,13 @@ import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.
 import static org.onosproject.yangutils.translator.tojava.JavaAttributeInfo.getAttributeInfoForTheData;
 import static org.onosproject.yangutils.translator.tojava.utils.JavaFileGenerator.generateTypeDefClassFile;
 import static org.onosproject.yangutils.translator.tojava.utils.JavaFileGenerator.generateUnionClassFile;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCamelCase;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCamelCase;
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getOfMethodStringAndJavaDoc;
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getTypeConstructorStringAndJavaDoc;
 import static org.onosproject.yangutils.translator.tojava.utils.TempJavaCodeFragmentFilesUtils.closeFile;
 import static org.onosproject.yangutils.utils.UtilConstants.EMPTY_STRING;
 import static org.onosproject.yangutils.utils.UtilConstants.NEW_LINE;
-import static org.onosproject.yangutils.utils.io.impl.FileSystemUtil.createPackage;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.createPackage;
 
 /**
  * Represents implementation of java data type code fragments temporary implementations.

@@ -14,10 +14,9 @@
  * limitations under the License.
  */
 
-package org.onosproject.yangutils.translator.tojava.utils;
+package org.onosproject.yangutils.translator.tojava.javamodel;
 
 import java.util.Stack;
-
 import org.onosproject.yangutils.datamodel.YangDataTypes;
 import org.onosproject.yangutils.datamodel.YangDerivedInfo;
 import org.onosproject.yangutils.datamodel.YangEnumeration;
@@ -26,48 +25,35 @@ import org.onosproject.yangutils.datamodel.YangType;
 import org.onosproject.yangutils.datamodel.YangTypeDef;
 import org.onosproject.yangutils.datamodel.YangUnion;
 import org.onosproject.yangutils.translator.exception.TranslatorException;
+import org.onosproject.yangutils.translator.tojava.JavaCodeGeneratorInfo;
 import org.onosproject.yangutils.translator.tojava.JavaFileInfo;
 import org.onosproject.yangutils.translator.tojava.JavaFileInfoContainer;
-import org.onosproject.yangutils.translator.tojava.javamodel.JavaCodeGeneratorInfo;
-import org.onosproject.yangutils.translator.tojava.javamodel.YangJavaEnumeration;
-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.YangJavaUnion;
+import org.onosproject.yangutils.utils.io.impl.YangToJavaNamingConflictUtil;
 
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCamelCase;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCapitalCase;
-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.translator.tojava.javamodel.YangJavaModelUtils.getCurNodePackage;
 import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getRootPackage;
 import static org.onosproject.yangutils.utils.UtilConstants.BIG_INTEGER;
 import static org.onosproject.yangutils.utils.UtilConstants.BOOLEAN_DATA_TYPE;
 import static org.onosproject.yangutils.utils.UtilConstants.BOOLEAN_WRAPPER;
 import static org.onosproject.yangutils.utils.UtilConstants.BYTE;
 import static org.onosproject.yangutils.utils.UtilConstants.BYTE_WRAPPER;
-import static org.onosproject.yangutils.utils.UtilConstants.EMPTY_STRING;
-import static org.onosproject.yangutils.utils.UtilConstants.FROM_STRING_METHOD_NAME;
 import static org.onosproject.yangutils.utils.UtilConstants.INT;
 import static org.onosproject.yangutils.utils.UtilConstants.INTEGER_WRAPPER;
 import static org.onosproject.yangutils.utils.UtilConstants.JAVA_LANG;
 import static org.onosproject.yangutils.utils.UtilConstants.JAVA_MATH;
 import static org.onosproject.yangutils.utils.UtilConstants.LONG;
 import static org.onosproject.yangutils.utils.UtilConstants.LONG_WRAPPER;
-import static org.onosproject.yangutils.utils.UtilConstants.NEW;
-import static org.onosproject.yangutils.utils.UtilConstants.PARSE_BOOLEAN;
-import static org.onosproject.yangutils.utils.UtilConstants.PARSE_BYTE;
-import static org.onosproject.yangutils.utils.UtilConstants.PARSE_INT;
-import static org.onosproject.yangutils.utils.UtilConstants.PARSE_LONG;
-import static org.onosproject.yangutils.utils.UtilConstants.PARSE_SHORT;
 import static org.onosproject.yangutils.utils.UtilConstants.PERIOD;
 import static org.onosproject.yangutils.utils.UtilConstants.SHORT;
 import static org.onosproject.yangutils.utils.UtilConstants.SHORT_WRAPPER;
-import static org.onosproject.yangutils.utils.UtilConstants.SPACE;
 import static org.onosproject.yangutils.utils.UtilConstants.STRING_DATA_TYPE;
 import static org.onosproject.yangutils.utils.UtilConstants.YANG_BINARY_CLASS;
 import static org.onosproject.yangutils.utils.UtilConstants.YANG_BITS_CLASS;
 import static org.onosproject.yangutils.utils.UtilConstants.YANG_DECIMAL64_CLASS;
 import static org.onosproject.yangutils.utils.UtilConstants.YANG_TYPES_PKG;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCamelCase;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCapitalCase;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getPackageDirPathFromJavaJPackage;
 
 /**
  * Represents java data types info corresponding to YANG type.
@@ -121,51 +107,6 @@ public final class AttributesJavaDataType {
     }
 
     /**
-     * Returns from string method parsed string.
-     *
-     * @param targetDataType target data type
-     * @param yangType       YANG type
-     * @return parsed string
-     */
-    public static String getParseFromStringMethod(String targetDataType, YangType<?> yangType) {
-
-        YangDataTypes type = yangType.getDataType();
-
-        switch (type) {
-            case INT8:
-                return BYTE_WRAPPER + PERIOD + PARSE_BYTE;
-            case INT16:
-                return SHORT_WRAPPER + PERIOD + PARSE_SHORT;
-            case INT32:
-                return INTEGER_WRAPPER + PERIOD + PARSE_INT;
-            case INT64:
-                return LONG_WRAPPER + PERIOD + PARSE_LONG;
-            case UINT8:
-                return SHORT_WRAPPER + PERIOD + PARSE_SHORT;
-            case UINT16:
-                return INTEGER_WRAPPER + PERIOD + PARSE_INT;
-            case UINT32:
-                return LONG_WRAPPER + PERIOD + PARSE_LONG;
-            case UINT64:
-                return NEW + SPACE + BIG_INTEGER;
-            case STRING:
-                return EMPTY_STRING;
-            case EMPTY:
-            case BOOLEAN:
-                return BOOLEAN_WRAPPER + PERIOD + PARSE_BOOLEAN;
-            case DECIMAL64:
-            case BITS:
-            case BINARY:
-            case UNION:
-            case ENUMERATION:
-            case DERIVED:
-                return targetDataType + PERIOD + FROM_STRING_METHOD_NAME;
-            default:
-                throw new TranslatorException("given data type is not supported.");
-        }
-    }
-
-    /**
      * Returns java import class.
      *
      * @param yangType     YANG type

@@ -17,7 +17,7 @@ package org.onosproject.yangutils.translator.tojava.javamodel;
 
 import org.onosproject.yangutils.datamodel.YangType;
 import org.onosproject.yangutils.translator.tojava.JavaQualifiedTypeInfoContainer;
-import org.onosproject.yangutils.translator.tojava.utils.YangToJavaNamingConflictUtil;
+import org.onosproject.yangutils.utils.io.impl.YangToJavaNamingConflictUtil;
 
 /**
  * Represent java based identification of the YANG leaves.

@@ -16,7 +16,7 @@
 package org.onosproject.yangutils.translator.tojava.javamodel;
 
 import org.onosproject.yangutils.translator.tojava.JavaQualifiedTypeInfoContainer;
-import org.onosproject.yangutils.translator.tojava.utils.YangToJavaNamingConflictUtil;
+import org.onosproject.yangutils.utils.io.impl.YangToJavaNamingConflictUtil;
 
 /**
  * Represent java based identification of the YANG leaves.

@@ -20,12 +20,13 @@ import java.io.IOException;
 import org.onosproject.yangutils.datamodel.YangAugment;
 import org.onosproject.yangutils.translator.exception.TranslatorException;
 import org.onosproject.yangutils.translator.tojava.JavaCodeGenerator;
+import org.onosproject.yangutils.translator.tojava.JavaCodeGeneratorInfo;
 import org.onosproject.yangutils.translator.tojava.JavaFileInfo;
 import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFiles;
-import org.onosproject.yangutils.translator.tojava.utils.YangPluginConfig;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_INTERFACE_WITH_BUILDER;
-import static org.onosproject.yangutils.translator.tojava.utils.YangJavaModelUtils.generateCodeOfAugmentableNode;
+import static org.onosproject.yangutils.translator.tojava.javamodel.YangJavaModelUtils.generateCodeOfAugmentableNode;
 
 /**
  * Represents augment information extended to support java code generation.

@@ -20,12 +20,13 @@ import java.io.IOException;
 import org.onosproject.yangutils.datamodel.YangCase;
 import org.onosproject.yangutils.translator.exception.TranslatorException;
 import org.onosproject.yangutils.translator.tojava.JavaCodeGenerator;
+import org.onosproject.yangutils.translator.tojava.JavaCodeGeneratorInfo;
 import org.onosproject.yangutils.translator.tojava.JavaFileInfo;
 import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFiles;
-import org.onosproject.yangutils.translator.tojava.utils.YangPluginConfig;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_INTERFACE_WITH_BUILDER;
-import static org.onosproject.yangutils.translator.tojava.utils.YangJavaModelUtils.generateCodeOfAugmentableNode;
+import static org.onosproject.yangutils.translator.tojava.javamodel.YangJavaModelUtils.generateCodeOfAugmentableNode;
 
 /**
  * Represents case information extended to support java code generation.

@@ -20,12 +20,13 @@ import java.io.IOException;
 import org.onosproject.yangutils.datamodel.YangChoice;
 import org.onosproject.yangutils.translator.exception.TranslatorException;
 import org.onosproject.yangutils.translator.tojava.JavaCodeGenerator;
+import org.onosproject.yangutils.translator.tojava.JavaCodeGeneratorInfo;
 import org.onosproject.yangutils.translator.tojava.JavaFileInfo;
 import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFiles;
-import org.onosproject.yangutils.translator.tojava.utils.YangPluginConfig;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.INTERFACE_MASK;
-import static org.onosproject.yangutils.translator.tojava.utils.YangJavaModelUtils.generateCodeAndUpdateInParent;
+import static org.onosproject.yangutils.translator.tojava.javamodel.YangJavaModelUtils.generateCodeAndUpdateInParent;
 
 /**
  * Represents choice information extended to support java code generation.

@@ -20,12 +20,13 @@ import java.io.IOException;
 import org.onosproject.yangutils.datamodel.YangContainer;
 import org.onosproject.yangutils.translator.exception.TranslatorException;
 import org.onosproject.yangutils.translator.tojava.JavaCodeGenerator;
+import org.onosproject.yangutils.translator.tojava.JavaCodeGeneratorInfo;
 import org.onosproject.yangutils.translator.tojava.JavaFileInfo;
 import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFiles;
-import org.onosproject.yangutils.translator.tojava.utils.YangPluginConfig;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_INTERFACE_WITH_BUILDER;
-import static org.onosproject.yangutils.translator.tojava.utils.YangJavaModelUtils.generateCodeAndUpdateInParent;
+import static org.onosproject.yangutils.translator.tojava.javamodel.YangJavaModelUtils.generateCodeAndUpdateInParent;
 
 /**
  * Represents container information extended to support java code generation.

@@ -21,12 +21,13 @@ import java.io.IOException;
 import org.onosproject.yangutils.datamodel.YangEnumeration;
 import org.onosproject.yangutils.translator.exception.TranslatorException;
 import org.onosproject.yangutils.translator.tojava.JavaCodeGenerator;
+import org.onosproject.yangutils.translator.tojava.JavaCodeGeneratorInfo;
 import org.onosproject.yangutils.translator.tojava.JavaFileInfo;
 import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFiles;
-import org.onosproject.yangutils.translator.tojava.utils.YangPluginConfig;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_ENUM_CLASS;
-import static org.onosproject.yangutils.translator.tojava.utils.YangJavaModelUtils.generateCodeOfNode;
+import static org.onosproject.yangutils.translator.tojava.javamodel.YangJavaModelUtils.generateCodeOfNode;
 
 /**
  * Represents YANG java enumeration information extended to support java code generation.

@@ -20,11 +20,12 @@ import java.io.IOException;
 import org.onosproject.yangutils.datamodel.YangGrouping;
 import org.onosproject.yangutils.translator.exception.TranslatorException;
 import org.onosproject.yangutils.translator.tojava.JavaCodeGenerator;
+import org.onosproject.yangutils.translator.tojava.JavaCodeGeneratorInfo;
 import org.onosproject.yangutils.translator.tojava.JavaFileInfo;
 import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFiles;
-import org.onosproject.yangutils.translator.tojava.utils.YangPluginConfig;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
-import static org.onosproject.yangutils.translator.tojava.utils.YangJavaModelUtils.updatePackageInfo;
+import static org.onosproject.yangutils.translator.tojava.javamodel.YangJavaModelUtils.updatePackageInfo;
 
 /**
  * Represents grouping information extended to support java code generation.

@@ -21,12 +21,13 @@ import java.io.IOException;
 import org.onosproject.yangutils.datamodel.YangInput;
 import org.onosproject.yangutils.translator.exception.TranslatorException;
 import org.onosproject.yangutils.translator.tojava.JavaCodeGenerator;
+import org.onosproject.yangutils.translator.tojava.JavaCodeGeneratorInfo;
 import org.onosproject.yangutils.translator.tojava.JavaFileInfo;
 import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFiles;
-import org.onosproject.yangutils.translator.tojava.utils.YangPluginConfig;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_INTERFACE_WITH_BUILDER;
-import static org.onosproject.yangutils.translator.tojava.utils.YangJavaModelUtils.generateCodeOfAugmentableNode;
+import static org.onosproject.yangutils.translator.tojava.javamodel.YangJavaModelUtils.generateCodeOfAugmentableNode;
 
 /**
  * Represents input information extended to support java code generation.

@@ -17,10 +17,10 @@ package org.onosproject.yangutils.translator.tojava.javamodel;
 
 import org.onosproject.yangutils.datamodel.YangLeaf;
 import org.onosproject.yangutils.translator.tojava.JavaQualifiedTypeInfo;
-import org.onosproject.yangutils.translator.tojava.utils.YangToJavaNamingConflictUtil;
+import org.onosproject.yangutils.utils.io.impl.YangToJavaNamingConflictUtil;
 
 import static org.onosproject.yangutils.translator.tojava.JavaQualifiedTypeInfo.updateLeavesJavaQualifiedInfo;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCamelCase;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCamelCase;
 
 /**
  * Represents java information corresponding to the YANG leaf.

@@ -17,10 +17,10 @@ package org.onosproject.yangutils.translator.tojava.javamodel;
 
 import org.onosproject.yangutils.datamodel.YangLeafList;
 import org.onosproject.yangutils.translator.tojava.JavaQualifiedTypeInfo;
-import org.onosproject.yangutils.translator.tojava.utils.YangToJavaNamingConflictUtil;
+import org.onosproject.yangutils.utils.io.impl.YangToJavaNamingConflictUtil;
 
 import static org.onosproject.yangutils.translator.tojava.JavaQualifiedTypeInfo.updateLeavesJavaQualifiedInfo;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCamelCase;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCamelCase;
 
 /**
  * Represents java information corresponding to the YANG leaf-list.

@@ -20,12 +20,13 @@ import java.io.IOException;
 import org.onosproject.yangutils.datamodel.YangList;
 import org.onosproject.yangutils.translator.exception.TranslatorException;
 import org.onosproject.yangutils.translator.tojava.JavaCodeGenerator;
+import org.onosproject.yangutils.translator.tojava.JavaCodeGeneratorInfo;
 import org.onosproject.yangutils.translator.tojava.JavaFileInfo;
 import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFiles;
-import org.onosproject.yangutils.translator.tojava.utils.YangPluginConfig;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_INTERFACE_WITH_BUILDER;
-import static org.onosproject.yangutils.translator.tojava.utils.YangJavaModelUtils.generateCodeAndUpdateInParent;
+import static org.onosproject.yangutils.translator.tojava.javamodel.YangJavaModelUtils.generateCodeAndUpdateInParent;
 
 /**
  * Represents YANG list information extended to support java code generation.

@@ -14,24 +14,23 @@
  * limitations under the License.
  */
 
-package org.onosproject.yangutils.translator.tojava.utils;
+package org.onosproject.yangutils.translator.tojava.javamodel;
 
 import java.io.IOException;
-
 import org.onosproject.yangutils.datamodel.RpcNotificationContainer;
 import org.onosproject.yangutils.datamodel.YangCase;
 import org.onosproject.yangutils.datamodel.YangChoice;
 import org.onosproject.yangutils.datamodel.YangLeavesHolder;
 import org.onosproject.yangutils.datamodel.YangNode;
 import org.onosproject.yangutils.datamodel.YangTypeHolder;
+import org.onosproject.yangutils.datamodel.utils.DataModelUtils;
 import org.onosproject.yangutils.translator.exception.TranslatorException;
+import org.onosproject.yangutils.translator.tojava.JavaCodeGeneratorInfo;
+import org.onosproject.yangutils.translator.tojava.JavaFileInfo;
 import org.onosproject.yangutils.translator.tojava.JavaFileInfoContainer;
 import org.onosproject.yangutils.translator.tojava.JavaQualifiedTypeInfo;
 import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFiles;
-import org.onosproject.yangutils.translator.tojava.javamodel.JavaCodeGeneratorInfo;
-import org.onosproject.yangutils.translator.tojava.javamodel.YangJavaEnumeration;
-import org.onosproject.yangutils.translator.tojava.javamodel.YangJavaModule;
-import org.onosproject.yangutils.translator.tojava.javamodel.YangJavaSubModule;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.isRpcChildNodePresent;
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_EVENT_CLASS;
@@ -39,10 +38,10 @@ import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_EVENT_SUBJECT_CLASS;
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_SERVICE_AND_MANAGER;
 import static org.onosproject.yangutils.translator.tojava.TempJavaFragmentFiles.addCurNodeInfoInParentTempFile;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCamelCase;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCapitalCase;
-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.UtilConstants.PERIOD;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCamelCase;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCapitalCase;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getPackageDirPathFromJavaJPackage;
 
 /**
  * Represents utility class for YANG java model.
@@ -349,4 +348,26 @@ public final class YangJavaModelUtils {
         javaCodeGeneratorInfo.getJavaFileInfo().addGeneratedFileTypes(GENERATE_EVENT_LISTENER_INTERFACE);
     }
 
+    /**
+     * Returns the node package string.
+     *
+     * @param curNode current java node whose package string needs to be set
+     * @return returns the root package string
+     */
+    public static String getCurNodePackage(YangNode curNode) {
+
+        String pkg;
+        if (!(curNode instanceof JavaFileInfoContainer)
+                || curNode.getParent() == null) {
+            throw new TranslatorException("missing parent node to get current node's package");
+        }
+
+        YangNode parentNode = DataModelUtils.getParentNodeInGenCode(curNode);
+        if (!(parentNode instanceof JavaFileInfoContainer)) {
+            throw new TranslatorException("missing parent java node to get current node's package");
+        }
+        JavaFileInfo parentJavaFileHandle = ((JavaFileInfoContainer) parentNode).getJavaFileInfo();
+        pkg = parentJavaFileHandle.getPackage() + PERIOD + parentJavaFileHandle.getJavaName();
+        return pkg.toLowerCase();
+    }
 }

@@ -24,16 +24,17 @@ import org.onosproject.yangutils.datamodel.YangNode;
 import org.onosproject.yangutils.datamodel.YangNotification;
 import org.onosproject.yangutils.translator.exception.TranslatorException;
 import org.onosproject.yangutils.translator.tojava.JavaCodeGenerator;
+import org.onosproject.yangutils.translator.tojava.JavaCodeGeneratorInfo;
 import org.onosproject.yangutils.translator.tojava.JavaFileInfo;
 import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFiles;
-import org.onosproject.yangutils.translator.tojava.utils.YangPluginConfig;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_EVENT_CLASS;
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_EVENT_LISTENER_INTERFACE;
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_EVENT_SUBJECT_CLASS;
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_SERVICE_AND_MANAGER;
 import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getRootPackage;
-import static org.onosproject.yangutils.translator.tojava.utils.YangJavaModelUtils.generateCodeOfRootNode;
+import static org.onosproject.yangutils.translator.tojava.javamodel.YangJavaModelUtils.generateCodeOfRootNode;
 import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.searchAndDeleteTempDir;
 
 /**

@@ -22,17 +22,18 @@ import org.onosproject.yangutils.datamodel.YangNode;
 import org.onosproject.yangutils.datamodel.YangNotification;
 import org.onosproject.yangutils.translator.exception.TranslatorException;
 import org.onosproject.yangutils.translator.tojava.JavaCodeGenerator;
+import org.onosproject.yangutils.translator.tojava.JavaCodeGeneratorInfo;
 import org.onosproject.yangutils.translator.tojava.JavaFileInfo;
 import org.onosproject.yangutils.translator.tojava.JavaFileInfoContainer;
 import org.onosproject.yangutils.translator.tojava.JavaQualifiedTypeInfo;
 import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFiles;
 import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFilesContainer;
 import org.onosproject.yangutils.translator.tojava.utils.JavaExtendsListHolder;
-import org.onosproject.yangutils.translator.tojava.utils.YangPluginConfig;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_INTERFACE_WITH_BUILDER;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCapitalCase;
-import static org.onosproject.yangutils.translator.tojava.utils.YangJavaModelUtils.generateCodeOfAugmentableNode;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCapitalCase;
+import static org.onosproject.yangutils.translator.tojava.javamodel.YangJavaModelUtils.generateCodeOfAugmentableNode;
 import static org.onosproject.yangutils.utils.UtilConstants.EVENT_LISTENER_STRING;
 import static org.onosproject.yangutils.utils.UtilConstants.EVENT_STRING;
 

@@ -21,12 +21,13 @@ import java.io.IOException;
 import org.onosproject.yangutils.datamodel.YangOutput;
 import org.onosproject.yangutils.translator.exception.TranslatorException;
 import org.onosproject.yangutils.translator.tojava.JavaCodeGenerator;
+import org.onosproject.yangutils.translator.tojava.JavaCodeGeneratorInfo;
 import org.onosproject.yangutils.translator.tojava.JavaFileInfo;
 import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFiles;
-import org.onosproject.yangutils.translator.tojava.utils.YangPluginConfig;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_INTERFACE_WITH_BUILDER;
-import static org.onosproject.yangutils.translator.tojava.utils.YangJavaModelUtils.generateCodeOfAugmentableNode;
+import static org.onosproject.yangutils.translator.tojava.javamodel.YangJavaModelUtils.generateCodeOfAugmentableNode;
 
 /**
  * Represents output information extended to support java code generation.

@@ -26,19 +26,20 @@ import org.onosproject.yangutils.datamodel.YangRpc;
 import org.onosproject.yangutils.translator.exception.TranslatorException;
 import org.onosproject.yangutils.translator.tojava.JavaAttributeInfo;
 import org.onosproject.yangutils.translator.tojava.JavaCodeGenerator;
+import org.onosproject.yangutils.translator.tojava.JavaCodeGeneratorInfo;
 import org.onosproject.yangutils.translator.tojava.JavaFileInfo;
 import org.onosproject.yangutils.translator.tojava.JavaFileInfoContainer;
 import org.onosproject.yangutils.translator.tojava.JavaQualifiedTypeInfo;
 import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFiles;
 import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFilesContainer;
 import org.onosproject.yangutils.translator.tojava.TempJavaFragmentFiles;
-import org.onosproject.yangutils.translator.tojava.utils.YangPluginConfig;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.getParentNodeInGenCode;
 import static org.onosproject.yangutils.translator.tojava.JavaAttributeInfo.getAttributeInfoForTheData;
 import static org.onosproject.yangutils.translator.tojava.JavaQualifiedTypeInfo.getQualifiedTypeInfoOfCurNode;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCapitalCase;
-import static org.onosproject.yangutils.translator.tojava.utils.YangJavaModelUtils.updatePackageInfo;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCapitalCase;
+import static org.onosproject.yangutils.translator.tojava.javamodel.YangJavaModelUtils.updatePackageInfo;
 import static org.onosproject.yangutils.utils.UtilConstants.ACTIVATE;
 import static org.onosproject.yangutils.utils.UtilConstants.COMPONENT;
 import static org.onosproject.yangutils.utils.UtilConstants.DEACTIVATE;

@@ -26,16 +26,17 @@ import org.onosproject.yangutils.datamodel.YangNotification;
 import org.onosproject.yangutils.datamodel.YangSubModule;
 import org.onosproject.yangutils.translator.exception.TranslatorException;
 import org.onosproject.yangutils.translator.tojava.JavaCodeGenerator;
+import org.onosproject.yangutils.translator.tojava.JavaCodeGeneratorInfo;
 import org.onosproject.yangutils.translator.tojava.JavaFileInfo;
 import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFiles;
-import org.onosproject.yangutils.translator.tojava.utils.YangPluginConfig;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_EVENT_CLASS;
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_EVENT_LISTENER_INTERFACE;
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_EVENT_SUBJECT_CLASS;
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_SERVICE_AND_MANAGER;
 import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getRootPackage;
-import static org.onosproject.yangutils.translator.tojava.utils.YangJavaModelUtils.generateCodeOfRootNode;
+import static org.onosproject.yangutils.translator.tojava.javamodel.YangJavaModelUtils.generateCodeOfRootNode;
 import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.searchAndDeleteTempDir;
 
 /**

@@ -18,8 +18,7 @@ package org.onosproject.yangutils.translator.tojava.javamodel;
 import org.onosproject.yangutils.datamodel.YangType;
 import org.onosproject.yangutils.translator.exception.TranslatorException;
 import org.onosproject.yangutils.translator.tojava.JavaQualifiedTypeInfo;
-import org.onosproject.yangutils.translator.tojava.utils.AttributesJavaDataType;
-import org.onosproject.yangutils.translator.tojava.utils.YangToJavaNamingConflictUtil;
+import org.onosproject.yangutils.utils.io.impl.YangToJavaNamingConflictUtil;
 
 /**
  * Represents java information corresponding to the YANG type.

@@ -20,12 +20,13 @@ import java.io.IOException;
 import org.onosproject.yangutils.datamodel.YangTypeDef;
 import org.onosproject.yangutils.translator.exception.TranslatorException;
 import org.onosproject.yangutils.translator.tojava.JavaCodeGenerator;
+import org.onosproject.yangutils.translator.tojava.JavaCodeGeneratorInfo;
 import org.onosproject.yangutils.translator.tojava.JavaFileInfo;
 import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFiles;
-import org.onosproject.yangutils.translator.tojava.utils.YangPluginConfig;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_TYPEDEF_CLASS;
-import static org.onosproject.yangutils.translator.tojava.utils.YangJavaModelUtils.generateCodeOfNode;
+import static org.onosproject.yangutils.translator.tojava.javamodel.YangJavaModelUtils.generateCodeOfNode;
 
 /**
  * Represents type define information extended to support java code generation.

@@ -20,12 +20,13 @@ import java.io.IOException;
 import org.onosproject.yangutils.datamodel.YangUnion;
 import org.onosproject.yangutils.translator.exception.TranslatorException;
 import org.onosproject.yangutils.translator.tojava.JavaCodeGenerator;
+import org.onosproject.yangutils.translator.tojava.JavaCodeGeneratorInfo;
 import org.onosproject.yangutils.translator.tojava.JavaFileInfo;
 import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFiles;
-import org.onosproject.yangutils.translator.tojava.utils.YangPluginConfig;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_UNION_CLASS;
-import static org.onosproject.yangutils.translator.tojava.utils.YangJavaModelUtils.generateCodeOfNode;
+import static org.onosproject.yangutils.translator.tojava.javamodel.YangJavaModelUtils.generateCodeOfNode;
 
 /**
  * Represents union information extended to support java code generation.

@@ -25,13 +25,14 @@ import org.onosproject.yangutils.datamodel.YangNode;
 import org.onosproject.yangutils.datamodel.YangUses;
 import org.onosproject.yangutils.translator.exception.TranslatorException;
 import org.onosproject.yangutils.translator.tojava.JavaCodeGenerator;
+import org.onosproject.yangutils.translator.tojava.JavaCodeGeneratorInfo;
 import org.onosproject.yangutils.translator.tojava.JavaFileInfo;
 import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFiles;
-import org.onosproject.yangutils.translator.tojava.utils.YangPluginConfig;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.getParentNodeInGenCode;
 import static org.onosproject.yangutils.translator.tojava.TempJavaFragmentFiles.addCurNodeAsAttributeInTargetTempFile;
-import static org.onosproject.yangutils.translator.tojava.utils.YangJavaModelUtils.updatePackageInfo;
+import static org.onosproject.yangutils.translator.tojava.javamodel.YangJavaModelUtils.updatePackageInfo;
 
 /**
  * Represents uses information extended to support java code generation.

@@ -17,9 +17,9 @@
 package org.onosproject.yangutils.translator.tojava.utils;
 
 import org.onosproject.yangutils.datamodel.YangNode;
+import org.onosproject.yangutils.datamodel.YangNotification;
 import org.onosproject.yangutils.translator.tojava.JavaQualifiedTypeInfo;
 import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFilesContainer;
-import org.onosproject.yangutils.translator.tojava.javamodel.YangJavaNotification;
 
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.BUILDER_CLASS_MASK;
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.BUILDER_INTERFACE_MASK;
@@ -236,7 +236,7 @@ public final class ClassDefinitionGenerator {
         if (holder.getExtendsList() != null && !holder.getExtendsList().isEmpty()) {
             curNode = curNode.getChild();
             while (curNode != null) {
-                if (curNode instanceof YangJavaNotification) {
+                if (curNode instanceof YangNotification) {
                     return getRpcInterfaceDefinitionWhenItExtends(yangName, holder);
                 }
                 curNode = curNode.getNextSibling();

@@ -17,9 +17,10 @@
 package org.onosproject.yangutils.translator.tojava.utils;
 
 import org.onosproject.yangutils.translator.tojava.JavaQualifiedTypeInfo;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getEnumJavaAttribute;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getSmallCase;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getSmallCase;
 import static org.onosproject.yangutils.utils.UtilConstants.ARRAY_LIST;
 import static org.onosproject.yangutils.utils.UtilConstants.AUGMENTED_INFO;
 import static org.onosproject.yangutils.utils.UtilConstants.CLOSE_CURLY_BRACKET;

@@ -27,7 +27,7 @@ import org.onosproject.yangutils.translator.tojava.JavaFileInfoContainer;
 import org.onosproject.yangutils.translator.tojava.JavaImportData;
 import org.onosproject.yangutils.translator.tojava.JavaQualifiedTypeInfo;
 
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCapitalCase;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCapitalCase;
 import static org.onosproject.yangutils.translator.tojava.utils.TempJavaCodeFragmentFilesUtils.getTempJavaFragement;
 
 /**

@@ -28,7 +28,8 @@ import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFiles;
 import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFilesContainer;
 import org.onosproject.yangutils.translator.tojava.TempJavaEnumerationFragmentFiles;
 import org.onosproject.yangutils.translator.tojava.TempJavaServiceFragmentFiles;
-import org.onosproject.yangutils.translator.tojava.javamodel.JavaCodeGeneratorInfo;
+import org.onosproject.yangutils.translator.tojava.JavaCodeGeneratorInfo;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.BUILDER_CLASS_MASK;
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.BUILDER_INTERFACE_MASK;
@@ -65,7 +66,7 @@ import static org.onosproject.yangutils.translator.tojava.utils.JavaCodeSnippetG
 import static org.onosproject.yangutils.translator.tojava.utils.JavaFileGeneratorUtils.getDataFromTempFileHandle;
 import static org.onosproject.yangutils.translator.tojava.utils.JavaFileGeneratorUtils.getEnumsValueAttribute;
 import static org.onosproject.yangutils.translator.tojava.utils.JavaFileGeneratorUtils.initiateJavaFileGeneration;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCapitalCase;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCapitalCase;
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.addActivateMethod;
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.addDeActivateMethod;
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getAddAugmentInfoMethodImpl;

@@ -31,6 +31,7 @@ import org.onosproject.yangutils.translator.tojava.TempJavaServiceFragmentFiles;
 import org.onosproject.yangutils.translator.tojava.TempJavaTypeFragmentFiles;
 import org.onosproject.yangutils.utils.io.impl.CopyrightHeader;
 import org.onosproject.yangutils.utils.io.impl.JavaDocGen.JavaDocType;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.BUILDER_CLASS_MASK;
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.BUILDER_INTERFACE_MASK;
@@ -64,8 +65,8 @@ import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.
 import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.SETTER_FOR_INTERFACE_MASK;
 import static org.onosproject.yangutils.translator.tojava.GeneratedTempFileType.TO_STRING_IMPL_MASK;
 import static org.onosproject.yangutils.translator.tojava.utils.ClassDefinitionGenerator.generateClassDefinition;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getJavaPackageFromPackagePath;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getSmallCase;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getJavaPackageFromPackagePath;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getSmallCase;
 import static org.onosproject.yangutils.utils.UtilConstants.CLOSE_PARENTHESIS;
 import static org.onosproject.yangutils.utils.UtilConstants.COMPONENT_ANNOTATION;
 import static org.onosproject.yangutils.utils.UtilConstants.EQUAL;

@@ -16,16 +16,18 @@
 
 package org.onosproject.yangutils.translator.tojava.utils;
 
+import java.io.File;
+import java.io.IOException;
 import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.List;
-
 import org.onosproject.yangutils.datamodel.YangNode;
-import org.onosproject.yangutils.datamodel.utils.DataModelUtils;
 import org.onosproject.yangutils.translator.exception.TranslatorException;
-import org.onosproject.yangutils.translator.tojava.JavaFileInfoContainer;
 import org.onosproject.yangutils.translator.tojava.JavaFileInfo;
+import org.onosproject.yangutils.translator.tojava.JavaFileInfoContainer;
+import org.onosproject.yangutils.utils.io.impl.YangIoUtils;
+import org.onosproject.yangutils.utils.io.impl.YangToJavaNamingConflictUtil;
 
+import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.getParentNodeInGenCode;
 import static org.onosproject.yangutils.utils.UtilConstants.COLAN;
 import static org.onosproject.yangutils.utils.UtilConstants.DEFAULT_BASE_PKG;
 import static org.onosproject.yangutils.utils.UtilConstants.EMPTY_STRING;
@@ -33,23 +35,17 @@ import static org.onosproject.yangutils.utils.UtilConstants.HYPHEN;
 import static org.onosproject.yangutils.utils.UtilConstants.JAVA_KEY_WORDS;
 import static org.onosproject.yangutils.utils.UtilConstants.PERIOD;
 import static org.onosproject.yangutils.utils.UtilConstants.QUOTES;
-import static org.onosproject.yangutils.utils.UtilConstants.REGEX_FOR_DIGITS_WITH_SINGLE_LETTER;
 import static org.onosproject.yangutils.utils.UtilConstants.REGEX_FOR_FIRST_DIGIT;
-import static org.onosproject.yangutils.utils.UtilConstants.REGEX_FOR_HYPHEN;
-import static org.onosproject.yangutils.utils.UtilConstants.REGEX_FOR_IDENTIFIER_SPECIAL_CHAR;
-import static org.onosproject.yangutils.utils.UtilConstants.REGEX_FOR_PERIOD;
-import static org.onosproject.yangutils.utils.UtilConstants.REGEX_FOR_SINGLE_LETTER;
-import static org.onosproject.yangutils.utils.UtilConstants.REGEX_FOR_UNDERSCORE;
 import static org.onosproject.yangutils.utils.UtilConstants.REGEX_WITH_ALL_SPECIAL_CHAR;
-import static org.onosproject.yangutils.utils.UtilConstants.REGEX_WITH_DIGITS;
-import static org.onosproject.yangutils.utils.UtilConstants.REGEX_WITH_SINGLE_CAPITAL_CASE;
-import static org.onosproject.yangutils.utils.UtilConstants.REGEX_WITH_SINGLE_CAPITAL_CASE_AND_DIGITS_SMALL_CASES;
-import static org.onosproject.yangutils.utils.UtilConstants.REGEX_WITH_UPPERCASE;
 import static org.onosproject.yangutils.utils.UtilConstants.REVISION_PREFIX;
 import static org.onosproject.yangutils.utils.UtilConstants.SLASH;
 import static org.onosproject.yangutils.utils.UtilConstants.UNDER_SCORE;
 import static org.onosproject.yangutils.utils.UtilConstants.VERSION_PREFIX;
-import static org.onosproject.yangutils.utils.UtilConstants.YANG_AUTO_PREFIX;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.addPackageInfo;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.createDirectories;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getAbsolutePackagePath;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getJavaPackageFromPackagePath;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getPackageDirPathFromJavaJPackage;
 
 /**
  * Represents an utility Class for translating the name from YANG to java convention.
@@ -95,29 +91,6 @@ public final class JavaIdentifierSyntax {
     }
 
     /**
-     * Returns the node package string.
-     *
-     * @param curNode current java node whose package string needs to be set
-     * @return returns the root package string
-     */
-    public static String getCurNodePackage(YangNode curNode) {
-
-        String pkg;
-        if (!(curNode instanceof JavaFileInfoContainer)
-                || curNode.getParent() == null) {
-            throw new TranslatorException("missing parent node to get current node's package");
-        }
-
-        YangNode parentNode = DataModelUtils.getParentNodeInGenCode(curNode);
-        if (!(parentNode instanceof JavaFileInfoContainer)) {
-            throw new TranslatorException("missing parent java node to get current node's package");
-        }
-        JavaFileInfo parentJavaFileHandle = ((JavaFileInfoContainer) parentNode).getJavaFileInfo();
-        pkg = parentJavaFileHandle.getPackage() + PERIOD + parentJavaFileHandle.getJavaName();
-        return pkg.toLowerCase();
-    }
-
-    /**
      * Returns version.
      *
      * @param ver YANG version
@@ -193,7 +166,7 @@ public final class JavaIdentifierSyntax {
         for (String member : pkgArr) {
             boolean presenceOfKeyword = JAVA_KEY_WORDS.contains(member.toLowerCase());
             if (presenceOfKeyword || member.matches(REGEX_FOR_FIRST_DIGIT)) {
-                String prefix = getPrefixForIdentifier(conflictResolver);
+                String prefix = YangIoUtils.getPrefixForIdentifier(conflictResolver);
                 member = prefix + member;
             }
             pkg = pkg + member;
@@ -206,252 +179,6 @@ public final class JavaIdentifierSyntax {
     }
 
     /**
-     * Prefix for adding with identifier and namespace, when it is a java keyword or starting with digits.
-     *
-     * @param conflictResolver object of YANG to java naming conflict util
-     * @return prefix which needs to be added
-     */
-    public static String getPrefixForIdentifier(YangToJavaNamingConflictUtil conflictResolver) {
-
-        String prefixForIdentifier = null;
-        if (conflictResolver != null) {
-            prefixForIdentifier = conflictResolver.getPrefixForIdentifier();
-        }
-        if (prefixForIdentifier != null) {
-            prefixForIdentifier = prefixForIdentifier.replaceAll(REGEX_WITH_ALL_SPECIAL_CHAR, COLAN);
-            String[] strArray = prefixForIdentifier.split(COLAN);
-            try {
-                if (strArray[0].isEmpty()) {
-                    List<String> stringArrangement = new ArrayList<String>();
-                    for (int i = 1; i < strArray.length; i++) {
-                        stringArrangement.add(strArray[i]);
-                    }
-                    strArray = stringArrangement.toArray(new String[stringArrangement.size()]);
-                }
-                prefixForIdentifier = strArray[0];
-                for (int j = 1; j < strArray.length; j++) {
-                    prefixForIdentifier = prefixForIdentifier + strArray[j].substring(0, 1).toUpperCase() +
-                            strArray[j].substring(1);
-                }
-            } catch (ArrayIndexOutOfBoundsException outOfBoundsException) {
-                throw new TranslatorException("The given prefix in pom.xml is invalid.");
-            }
-        } else {
-            prefixForIdentifier = YANG_AUTO_PREFIX;
-        }
-        return prefixForIdentifier;
-    }
-
-    /**
-     * Returns the YANG identifier name as java identifier.
-     *
-     * @param yangIdentifier identifier in YANG file
-     * @param conflictResolver object of YANG to java naming conflict util
-     * @return corresponding java identifier
-     */
-    public static String getCamelCase(String yangIdentifier, YangToJavaNamingConflictUtil conflictResolver) {
-
-        if (conflictResolver != null) {
-            String replacementForHyphen = conflictResolver.getReplacementForHyphen();
-            String replacementForPeriod = conflictResolver.getReplacementForPeriod();
-            String replacementForUnderscore = conflictResolver.getReplacementForUnderscore();
-            if (replacementForPeriod != null) {
-                yangIdentifier = yangIdentifier.replaceAll(REGEX_FOR_PERIOD,
-                        PERIOD + replacementForPeriod.toLowerCase() + PERIOD);
-            }
-            if (replacementForUnderscore != null) {
-                yangIdentifier = yangIdentifier.replaceAll(REGEX_FOR_UNDERSCORE,
-                        UNDER_SCORE + replacementForUnderscore.toLowerCase() + UNDER_SCORE);
-            }
-            if (replacementForHyphen != null) {
-                yangIdentifier = yangIdentifier.replaceAll(REGEX_FOR_HYPHEN,
-                        HYPHEN + replacementForHyphen.toLowerCase() + HYPHEN);
-            }
-        }
-        yangIdentifier = yangIdentifier.replaceAll(REGEX_FOR_IDENTIFIER_SPECIAL_CHAR, COLAN);
-        String[] strArray = yangIdentifier.split(COLAN);
-        if (strArray[0].isEmpty()) {
-            List<String> stringArrangement = new ArrayList<String>();
-            for (int i = 1; i < strArray.length; i++) {
-                stringArrangement.add(strArray[i]);
-            }
-            strArray = stringArrangement.toArray(new String[stringArrangement.size()]);
-        }
-        return upperCaseConflictResolver(strArray, conflictResolver);
-    }
-
-    /**
-     * Resolves the conflict when input has upper case.
-     *
-     * @param stringArray containing strings for upper case conflict resolver
-     * @param conflictResolver object of YANG to java naming conflict util
-     * @return camel cased string
-     */
-    private static String upperCaseConflictResolver(String[] stringArray,
-            YangToJavaNamingConflictUtil conflictResolver) {
-
-        for (int l = 0; l < stringArray.length; l++) {
-            String[] upperCaseSplitArray = stringArray[l].split(REGEX_WITH_UPPERCASE);
-            for (int m = 0; m < upperCaseSplitArray.length; m++) {
-                if (upperCaseSplitArray[m].matches(REGEX_WITH_SINGLE_CAPITAL_CASE)) {
-                    int check = m;
-                    while (check + 1 < upperCaseSplitArray.length) {
-                        if (upperCaseSplitArray[check + 1].matches(REGEX_WITH_SINGLE_CAPITAL_CASE)) {
-                            upperCaseSplitArray[check + 1] = upperCaseSplitArray[check + 1].toLowerCase();
-                            check = check + 1;
-                        } else if (upperCaseSplitArray[check + 1]
-                                .matches(REGEX_WITH_SINGLE_CAPITAL_CASE_AND_DIGITS_SMALL_CASES)) {
-                            upperCaseSplitArray[check + 1] = upperCaseSplitArray[check + 1].toLowerCase();
-                            break;
-                        } else {
-                            break;
-                        }
-                    }
-                }
-            }
-            StringBuilder strBuilder = new StringBuilder();
-            for (String element : upperCaseSplitArray) {
-                strBuilder.append(element);
-            }
-            stringArray[l] = strBuilder.toString();
-        }
-        List<String> result = new ArrayList<String>();
-        for (String element : stringArray) {
-            String[] capitalCaseSplitArray = element.split(REGEX_WITH_UPPERCASE);
-            for (String letter : capitalCaseSplitArray) {
-                String[] arrayForAddition = letter.split(REGEX_WITH_DIGITS);
-                List<String> list = Arrays.asList(arrayForAddition);
-                for (String str : list) {
-                    if (str != null && !str.isEmpty()) {
-                        result.add(str);
-                    }
-                }
-            }
-        }
-        stringArray = result.toArray(new String[result.size()]);
-        return applyCamelCaseRule(stringArray, conflictResolver);
-    }
-
-    /**
-     * Applies the rule that a string does not end with a capitalized letter and capitalizes
-     * the letter next to a number in an array.
-     *
-     * @param stringArray containing strings for camel case separation
-     * @param conflictResolver object of YANG to java naming conflict util
-     * @return camel case rule checked string
-     */
-    private static String applyCamelCaseRule(String[] stringArray, YangToJavaNamingConflictUtil conflictResolver) {
-
-        String ruleChecker = stringArray[0].toLowerCase();
-        int i;
-        if (ruleChecker.matches(REGEX_FOR_FIRST_DIGIT)) {
-            i = 0;
-            ruleChecker = EMPTY_STRING;
-        } else {
-            i = 1;
-        }
-        for (; i < stringArray.length; i++) {
-            if (i + 1 == stringArray.length) {
-                if (stringArray[i].matches(REGEX_FOR_SINGLE_LETTER)
-                        || stringArray[i].matches(REGEX_FOR_DIGITS_WITH_SINGLE_LETTER)) {
-                    ruleChecker = ruleChecker + stringArray[i].toLowerCase();
-                    break;
-                }
-            }
-            if (stringArray[i].matches(REGEX_FOR_FIRST_DIGIT)) {
-                for (int j = 0; j < stringArray[i].length(); j++) {
-                    char letterCheck = stringArray[i].charAt(j);
-                    if (Character.isLetter(letterCheck)) {
-                        stringArray[i] = stringArray[i].substring(0, j)
-                                + stringArray[i].substring(j, j + 1).toUpperCase() + stringArray[i].substring(j + 1);
-                        break;
-                    }
-                }
-                ruleChecker = ruleChecker + stringArray[i];
-            } else {
-                ruleChecker = ruleChecker + stringArray[i].substring(0, 1).toUpperCase() + stringArray[i].substring(1);
-            }
-        }
-        String ruleCheckerWithPrefix = addPrefix(ruleChecker, conflictResolver);
-        return restrictConsecutiveCapitalCase(ruleCheckerWithPrefix);
-    }
-
-    /**
-     * Adds prefix, if the string begins with digit or is a java key word.
-     *
-     * @param camelCasePrefix string for adding prefix
-     * @param conflictResolver object of YANG to java naming conflict util
-     * @return prefixed camel case string
-     */
-    private static String addPrefix(String camelCasePrefix, YangToJavaNamingConflictUtil conflictResolver) {
-
-        String prefix = getPrefixForIdentifier(conflictResolver);
-        if (camelCasePrefix.matches(REGEX_FOR_FIRST_DIGIT)) {
-            camelCasePrefix = prefix + camelCasePrefix;
-        }
-        if (JAVA_KEY_WORDS.contains(camelCasePrefix)) {
-            camelCasePrefix = prefix + camelCasePrefix.substring(0, 1).toUpperCase()
-                    + camelCasePrefix.substring(1);
-        }
-        return camelCasePrefix;
-    }
-
-    /**
-     * Restricts consecutive capital cased string as a rule in camel case.
-     *
-     * @param consecCapitalCaseRemover which requires the restriction of consecutive capital case
-     * @return string without consecutive capital case
-     */
-    private static String restrictConsecutiveCapitalCase(String consecCapitalCaseRemover) {
-
-        for (int k = 0; k < consecCapitalCaseRemover.length(); k++) {
-            if (k + 1 < consecCapitalCaseRemover.length()) {
-                if (Character.isUpperCase(consecCapitalCaseRemover.charAt(k))) {
-                    if (Character.isUpperCase(consecCapitalCaseRemover.charAt(k + 1))) {
-                        consecCapitalCaseRemover = consecCapitalCaseRemover.substring(0, k + 1)
-                                + consecCapitalCaseRemover.substring(k + 1, k + 2).toLowerCase()
-                                + consecCapitalCaseRemover.substring(k + 2);
-                    }
-                }
-            }
-        }
-        return consecCapitalCaseRemover;
-    }
-
-    /**
-     * Returns the YANG identifier name as java identifier with first letter
-     * in capital.
-     *
-     * @param yangIdentifier identifier in YANG file
-     * @return corresponding java identifier
-     */
-    public static String getCapitalCase(String yangIdentifier) {
-        yangIdentifier = yangIdentifier.substring(0, 1).toUpperCase() + yangIdentifier.substring(1);
-        return restrictConsecutiveCapitalCase(yangIdentifier);
-    }
-
-    /**
-     * Returns the YANG identifier name as java identifier with first letter
-     * in small.
-     *
-     * @param yangIdentifier identifier in YANG file.
-     * @return corresponding java identifier
-     */
-    public static String getSmallCase(String yangIdentifier) {
-        return yangIdentifier.substring(0, 1).toLowerCase() + yangIdentifier.substring(1);
-    }
-
-    /**
-     * Returns the java Package from package path.
-     *
-     * @param packagePath package path
-     * @return java package
-     */
-    public static String getJavaPackageFromPackagePath(String packagePath) {
-        return packagePath.replace(SLASH, PERIOD);
-    }
-
-    /**
      * Returns enum's java name.
      *
      * @param name enum's name
@@ -479,12 +206,46 @@ public final class JavaIdentifierSyntax {
     }
 
     /**
-     * Returns the directory path corresponding to java package.
+     * Creates a package structure with package info java file if not present.
+     *
+     * @param yangNode YANG node for which code is being generated
+     * @throws IOException any IO exception
+     */
+    public static void createPackage(YangNode yangNode) throws IOException {
+        if (!(yangNode instanceof JavaFileInfoContainer)) {
+            throw new TranslatorException("current node must have java file info");
+        }
+        String pkgInfo;
+        JavaFileInfo javaFileInfo = ((JavaFileInfoContainer) yangNode).getJavaFileInfo();
+        String pkg = getAbsolutePackagePath(javaFileInfo.getBaseCodeGenPath(), javaFileInfo.getPackageFilePath());
+        if (!doesPackageExist(pkg)) {
+            try {
+                File pack = createDirectories(pkg);
+                YangNode parent = getParentNodeInGenCode(yangNode);
+                if (parent != null) {
+                    pkgInfo = ((JavaFileInfoContainer) parent).getJavaFileInfo().getJavaName();
+                    addPackageInfo(pack, pkgInfo, getJavaPackageFromPackagePath(pkg), true,
+                            ((JavaFileInfoContainer) parent).getJavaFileInfo().getPluginConfig());
+                } else {
+                    pkgInfo = ((JavaFileInfoContainer) yangNode).getJavaFileInfo().getJavaName();
+                    addPackageInfo(pack, pkgInfo, getJavaPackageFromPackagePath(pkg), false,
+                            ((JavaFileInfoContainer) yangNode).getJavaFileInfo().getPluginConfig());
+                }
+            } catch (IOException e) {
+                throw new IOException("failed to create package-info file");
+            }
+        }
+    }
+
+    /**
+     * Checks if the package directory structure created.
      *
-     * @param packagePath package path
-     * @return java package
+     * @param pkg Package to check if it is created
+     * @return existence status of package
      */
-    public static String getPackageDirPathFromJavaJPackage(String packagePath) {
-        return packagePath.replace(PERIOD, SLASH);
+    public static boolean doesPackageExist(String pkg) {
+        File pkgDir = new File(getPackageDirPathFromJavaJPackage(pkg));
+        File pkgWithFile = new File(pkgDir + SLASH + "package-info.java");
+        return pkgDir.exists() && pkgWithFile.isFile();
     }
 }

@@ -18,31 +18,28 @@ package org.onosproject.yangutils.translator.tojava.utils;
 
 import java.util.List;
 import java.util.Map;
-
-import org.onosproject.yangutils.datamodel.YangNode;
-import org.onosproject.yangutils.datamodel.YangNodeIdentifier;
+import org.onosproject.yangutils.datamodel.YangDataTypes;
+import org.onosproject.yangutils.datamodel.YangType;
 import org.onosproject.yangutils.translator.exception.TranslatorException;
 import org.onosproject.yangutils.translator.tojava.JavaAttributeInfo;
-import org.onosproject.yangutils.translator.tojava.javamodel.YangJavaAugment;
 import org.onosproject.yangutils.utils.io.impl.JavaDocGen;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_EVENT_SUBJECT_CLASS;
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_SERVICE_AND_MANAGER;
-import static org.onosproject.yangutils.translator.tojava.utils.AttributesJavaDataType.getParseFromStringMethod;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCamelCase;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCapitalCase;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getSmallCase;
 import static org.onosproject.yangutils.utils.UtilConstants.ACTIVATE;
 import static org.onosproject.yangutils.utils.UtilConstants.ACTIVATE_ANNOTATION;
 import static org.onosproject.yangutils.utils.UtilConstants.ADD_STRING;
 import static org.onosproject.yangutils.utils.UtilConstants.AND;
-import static org.onosproject.yangutils.utils.UtilConstants.AUGMENTABLE;
 import static org.onosproject.yangutils.utils.UtilConstants.AUGMENTATION;
 import static org.onosproject.yangutils.utils.UtilConstants.AUGMENTED_INFO;
+import static org.onosproject.yangutils.utils.UtilConstants.BIG_INTEGER;
 import static org.onosproject.yangutils.utils.UtilConstants.BOOLEAN_DATA_TYPE;
+import static org.onosproject.yangutils.utils.UtilConstants.BOOLEAN_WRAPPER;
 import static org.onosproject.yangutils.utils.UtilConstants.BUILD;
 import static org.onosproject.yangutils.utils.UtilConstants.BUILDER;
 import static org.onosproject.yangutils.utils.UtilConstants.BYTE;
+import static org.onosproject.yangutils.utils.UtilConstants.BYTE_WRAPPER;
 import static org.onosproject.yangutils.utils.UtilConstants.CASE;
 import static org.onosproject.yangutils.utils.UtilConstants.CATCH;
 import static org.onosproject.yangutils.utils.UtilConstants.CHECK_NOT_NULL_STRING;
@@ -74,8 +71,10 @@ import static org.onosproject.yangutils.utils.UtilConstants.IF;
 import static org.onosproject.yangutils.utils.UtilConstants.IMPL;
 import static org.onosproject.yangutils.utils.UtilConstants.INSTANCE_OF;
 import static org.onosproject.yangutils.utils.UtilConstants.INT;
+import static org.onosproject.yangutils.utils.UtilConstants.INTEGER_WRAPPER;
 import static org.onosproject.yangutils.utils.UtilConstants.LIST;
 import static org.onosproject.yangutils.utils.UtilConstants.LONG;
+import static org.onosproject.yangutils.utils.UtilConstants.LONG_WRAPPER;
 import static org.onosproject.yangutils.utils.UtilConstants.NEW;
 import static org.onosproject.yangutils.utils.UtilConstants.NEW_LINE;
 import static org.onosproject.yangutils.utils.UtilConstants.NULL;
@@ -88,6 +87,11 @@ import static org.onosproject.yangutils.utils.UtilConstants.OPEN_CURLY_BRACKET;
 import static org.onosproject.yangutils.utils.UtilConstants.OPEN_PARENTHESIS;
 import static org.onosproject.yangutils.utils.UtilConstants.OTHER;
 import static org.onosproject.yangutils.utils.UtilConstants.OVERRIDE;
+import static org.onosproject.yangutils.utils.UtilConstants.PARSE_BOOLEAN;
+import static org.onosproject.yangutils.utils.UtilConstants.PARSE_BYTE;
+import static org.onosproject.yangutils.utils.UtilConstants.PARSE_INT;
+import static org.onosproject.yangutils.utils.UtilConstants.PARSE_LONG;
+import static org.onosproject.yangutils.utils.UtilConstants.PARSE_SHORT;
 import static org.onosproject.yangutils.utils.UtilConstants.PERIOD;
 import static org.onosproject.yangutils.utils.UtilConstants.PUBLIC;
 import static org.onosproject.yangutils.utils.UtilConstants.QUOTES;
@@ -96,6 +100,7 @@ import static org.onosproject.yangutils.utils.UtilConstants.RPC_INPUT_VAR_NAME;
 import static org.onosproject.yangutils.utils.UtilConstants.SEMI_COLAN;
 import static org.onosproject.yangutils.utils.UtilConstants.SET_METHOD_PREFIX;
 import static org.onosproject.yangutils.utils.UtilConstants.SHORT;
+import static org.onosproject.yangutils.utils.UtilConstants.SHORT_WRAPPER;
 import static org.onosproject.yangutils.utils.UtilConstants.SIXTEEN_SPACE_INDENTATION;
 import static org.onosproject.yangutils.utils.UtilConstants.SPACE;
 import static org.onosproject.yangutils.utils.UtilConstants.STARTED_LOG_INFO;
@@ -113,7 +118,6 @@ import static org.onosproject.yangutils.utils.UtilConstants.TWELVE_SPACE_INDENTA
 import static org.onosproject.yangutils.utils.UtilConstants.VALUE;
 import static org.onosproject.yangutils.utils.UtilConstants.VOID;
 import static org.onosproject.yangutils.utils.UtilConstants.YANG_UTILS_TODO;
-import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.getJavaDoc;
 import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.JavaDocType.BUILD_METHOD;
 import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.JavaDocType.CONSTRUCTOR;
 import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.JavaDocType.DEFAULT_CONSTRUCTOR;
@@ -123,6 +127,10 @@ import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.JavaDocType.MAN
 import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.JavaDocType.OF_METHOD;
 import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.JavaDocType.SETTER_METHOD;
 import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.JavaDocType.TYPE_CONSTRUCTOR;
+import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.getJavaDoc;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCamelCase;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCapitalCase;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getSmallCase;
 import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.trimAtLast;
 
 /**
@@ -904,7 +912,8 @@ public final class MethodsGenerator {
      * @return string and java doc for constructor of type class
      */
     public static String getTypeConstructorStringAndJavaDoc(JavaAttributeInfo attr,
-            String generatedJavaClassName, YangPluginConfig pluginConfig) {
+                                                            String generatedJavaClassName,
+                                                            YangPluginConfig pluginConfig) {
 
         String attrType = getReturnType(attr);
         String attrName = attr.getAttributeName();
@@ -989,36 +998,6 @@ public final class MethodsGenerator {
     }
 
     /**
-     * Provides string to be added in augment node's constructor.
-     *
-     * @param curNode current YANG node
-     * @return constructors string
-     */
-    public static String getAugmentsAddToAugmentedMethod(YangNode curNode) {
-
-        if (!(curNode instanceof YangJavaAugment)) {
-            throw new TranslatorException("current node should be of type augment node.");
-        }
-        YangJavaAugment augment = (YangJavaAugment) curNode;
-        List<YangNodeIdentifier> targetNodes = augment.getTargetNode();
-
-        String name = targetNodes.get(targetNodes.size() - 1).getName();
-        String captialCase = getCapitalCase(name);
-        String smallCase = getSmallCase(captialCase);
-        return EIGHT_SPACE_INDENTATION + captialCase + IMPL + SPACE + smallCase + IMPL + SPACE + EQUAL + SPACE
-                + NEW + SPACE + captialCase + BUILDER + OPEN_PARENTHESIS + CLOSE_PARENTHESIS + PERIOD + NEW + SPACE
-                + captialCase + IMPL + OPEN_PARENTHESIS + CLOSE_PARENTHESIS + SEMI_COLAN + NEW_LINE
-                + EIGHT_SPACE_INDENTATION + smallCase + IMPL + PERIOD + ADD_STRING + AUGMENTATION
-                + OPEN_PARENTHESIS + THIS + CLOSE_PARENTHESIS + SEMI_COLAN + NEW_LINE;
-
-    }
-
-    private static String getAugmentsAddToAugmentedMethodStart() {
-        return FOUR_SPACE_INDENTATION + PUBLIC + SPACE + VOID + SPACE + ADD_STRING + AUGMENTABLE + OPEN_PARENTHESIS
-                + CLOSE_PARENTHESIS + SPACE + OPEN_CURLY_BRACKET;
-    }
-
-    /**
      * Returns of method for enum class.
      *
      * @param className    class name
@@ -1029,7 +1008,8 @@ public final class MethodsGenerator {
      * @return of method
      */
     public static String getEnumsOfMethod(String className, JavaAttributeInfo attr,
-            Map<String, Integer> enumMap, List<String> enumList, YangPluginConfig pluginConfig) {
+                                          Map<String, Integer> enumMap, List<String> enumList,
+                                          YangPluginConfig pluginConfig) {
         String attrType = getReturnType(attr);
         String attrName = attr.getAttributeName();
 
@@ -1083,4 +1063,48 @@ public final class MethodsGenerator {
                 + STOPPED_LOG_INFO + FOUR_SPACE_INDENTATION + CLOSE_CURLY_BRACKET + NEW_LINE;
     }
 
+    /**
+     * Returns from string method parsed string.
+     *
+     * @param targetDataType target data type
+     * @param yangType       YANG type
+     * @return parsed string
+     */
+    public static String getParseFromStringMethod(String targetDataType, YangType<?> yangType) {
+
+        YangDataTypes type = yangType.getDataType();
+
+        switch (type) {
+            case INT8:
+                return BYTE_WRAPPER + PERIOD + PARSE_BYTE;
+            case INT16:
+                return SHORT_WRAPPER + PERIOD + PARSE_SHORT;
+            case INT32:
+                return INTEGER_WRAPPER + PERIOD + PARSE_INT;
+            case INT64:
+                return LONG_WRAPPER + PERIOD + PARSE_LONG;
+            case UINT8:
+                return SHORT_WRAPPER + PERIOD + PARSE_SHORT;
+            case UINT16:
+                return INTEGER_WRAPPER + PERIOD + PARSE_INT;
+            case UINT32:
+                return LONG_WRAPPER + PERIOD + PARSE_LONG;
+            case UINT64:
+                return NEW + SPACE + BIG_INTEGER;
+            case STRING:
+                return EMPTY_STRING;
+            case EMPTY:
+            case BOOLEAN:
+                return BOOLEAN_WRAPPER + PERIOD + PARSE_BOOLEAN;
+            case DECIMAL64:
+            case BITS:
+            case BINARY:
+            case UNION:
+            case ENUMERATION:
+            case DERIVED:
+                return targetDataType + PERIOD + FROM_STRING_METHOD_NAME;
+            default:
+                throw new TranslatorException("given data type is not supported.");
+        }
+    }
 }

@@ -19,51 +19,29 @@ package org.onosproject.yangutils.translator.tojava.utils;
 import java.io.File;
 import java.io.IOException;
 import java.util.List;
-
 import org.onosproject.yangutils.datamodel.YangNode;
-import org.onosproject.yangutils.datamodel.YangNodeIdentifier;
-import org.onosproject.yangutils.translator.exception.TranslatorException;
-import org.onosproject.yangutils.translator.tojava.JavaFileInfoContainer;
 import org.onosproject.yangutils.translator.tojava.JavaQualifiedTypeInfo;
 import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFiles;
 import org.onosproject.yangutils.translator.tojava.TempJavaCodeFragmentFilesContainer;
 import org.onosproject.yangutils.translator.tojava.TempJavaFragmentFiles;
-import org.onosproject.yangutils.translator.tojava.javamodel.YangJavaAugment;
-import org.onosproject.yangutils.translator.tojava.javamodel.YangJavaModule;
 
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCapitalCase;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getSmallCase;
 import static org.onosproject.yangutils.utils.UtilConstants.ACTIVATE_ANNOTATION_IMPORT;
-import static org.onosproject.yangutils.utils.UtilConstants.ADD_STRING;
-import static org.onosproject.yangutils.utils.UtilConstants.AUGMENTATION;
 import static org.onosproject.yangutils.utils.UtilConstants.AUGMENTATION_HOLDER;
 import static org.onosproject.yangutils.utils.UtilConstants.AUGMENTED_INFO;
-import static org.onosproject.yangutils.utils.UtilConstants.BUILDER;
-import static org.onosproject.yangutils.utils.UtilConstants.CLOSE_PARENTHESIS;
 import static org.onosproject.yangutils.utils.UtilConstants.COMPONENT_ANNOTATION_IMPORT;
 import static org.onosproject.yangutils.utils.UtilConstants.DEACTIVATE_ANNOTATION_IMPORT;
-import static org.onosproject.yangutils.utils.UtilConstants.EIGHT_SPACE_INDENTATION;
 import static org.onosproject.yangutils.utils.UtilConstants.ENUM;
-import static org.onosproject.yangutils.utils.UtilConstants.EQUAL;
 import static org.onosproject.yangutils.utils.UtilConstants.FOUR_SPACE_INDENTATION;
-import static org.onosproject.yangutils.utils.UtilConstants.IMPL;
-import static org.onosproject.yangutils.utils.UtilConstants.IMPORT;
 import static org.onosproject.yangutils.utils.UtilConstants.LISTENER_SERVICE;
 import static org.onosproject.yangutils.utils.UtilConstants.LOGGER_FACTORY_IMPORT;
 import static org.onosproject.yangutils.utils.UtilConstants.LOGGER_IMPORT;
-import static org.onosproject.yangutils.utils.UtilConstants.NEW;
 import static org.onosproject.yangutils.utils.UtilConstants.NEW_LINE;
 import static org.onosproject.yangutils.utils.UtilConstants.OPEN_CURLY_BRACKET;
-import static org.onosproject.yangutils.utils.UtilConstants.OPEN_PARENTHESIS;
-import static org.onosproject.yangutils.utils.UtilConstants.PERIOD;
 import static org.onosproject.yangutils.utils.UtilConstants.PUBLIC;
-import static org.onosproject.yangutils.utils.UtilConstants.SEMI_COLAN;
 import static org.onosproject.yangutils.utils.UtilConstants.SERVICE_ANNOTATION_IMPORT;
 import static org.onosproject.yangutils.utils.UtilConstants.SPACE;
-import static org.onosproject.yangutils.utils.UtilConstants.THIS;
 import static org.onosproject.yangutils.utils.UtilConstants.TYPE;
 import static org.onosproject.yangutils.utils.io.impl.FileSystemUtil.updateFileHandle;
-
 import static java.util.Collections.sort;
 
 /**
@@ -121,84 +99,6 @@ public final class TempJavaCodeFragmentFilesUtils {
     }
 
     /**
-     * Updated imports with augmented nodes import.
-     *
-     * @param curNode   current YANG node
-     * @param imports   list of imports
-     * @param operation to add or to delete
-     */
-    public static void addAugmentedNodesImport(YangNode curNode, List<String> imports, boolean operation) {
-
-        String nodesImport = "";
-
-        if (!(curNode instanceof YangJavaAugment)) {
-            throw new TranslatorException("current node should be of type augment node.");
-        }
-        YangJavaAugment augment = (YangJavaAugment) curNode;
-        List<YangNodeIdentifier> targetNodes = augment.getTargetNode();
-        YangNode parent = curNode.getParent();
-        if (parent instanceof YangJavaModule) {
-            // Add impl class import.
-            nodesImport = getAugmendtedNodesImports(parent, targetNodes, true) + SEMI_COLAN + NEW_LINE;
-            performOperationOnImports(imports, nodesImport, operation);
-            // Add builder class import.
-            if (targetNodes.size() > 2) {
-                nodesImport = getAugmendtedNodesImports(parent, targetNodes, false) + SEMI_COLAN + NEW_LINE;
-                performOperationOnImports(imports, nodesImport, operation);
-            }
-        }
-        // TODO: add functionality for submodule and uses.
-    }
-
-    /**
-     * Returns imports for augmented node.
-     *
-     * @param parent      parent YANG node
-     * @param targetNodes list of target nodes
-     * @param isImplClass if impl class's import required
-     * @return imports for augmented node
-     */
-    private static String getAugmendtedNodesImports(YangNode parent, List<YangNodeIdentifier> targetNodes,
-            boolean isImplClass) {
-        String pkgInfo = ((JavaFileInfoContainer) parent).getJavaFileInfo().getPackage();
-
-        for (int i = 0; i < targetNodes.size() - 1; i++) {
-            pkgInfo = pkgInfo + PERIOD + targetNodes.get(i).getName();
-        }
-        String classInfo = targetNodes.get(targetNodes.size() - 1).getName();
-        if (!isImplClass) {
-            return IMPORT + pkgInfo.toLowerCase() + PERIOD + getCapitalCase(classInfo) + BUILDER;
-        }
-        return IMPORT + pkgInfo.toLowerCase() + PERIOD + getCapitalCase(classInfo) + BUILDER + PERIOD
-                + getCapitalCase(classInfo) + IMPL;
-    }
-
-    /**
-     * Provides string to be added in augment node's constructor.
-     *
-     * @param curNode current YANG node
-     * @return constructors string
-     */
-    public static String getAugmentsAddToAugmentedClassString(YangNode curNode) {
-
-        if (!(curNode instanceof YangJavaAugment)) {
-            throw new TranslatorException("current node should be of type augment node.");
-        }
-        YangJavaAugment augment = (YangJavaAugment) curNode;
-        List<YangNodeIdentifier> targetNodes = augment.getTargetNode();
-
-        String name = targetNodes.get(targetNodes.size() - 1).getName();
-        String captialCase = getCapitalCase(name);
-        String smallCase = getSmallCase(captialCase);
-        return EIGHT_SPACE_INDENTATION + captialCase + IMPL + SPACE + smallCase + IMPL + SPACE + EQUAL + SPACE + NEW
-                + SPACE + captialCase + BUILDER + OPEN_PARENTHESIS + CLOSE_PARENTHESIS + PERIOD + NEW + SPACE
-                + captialCase + IMPL + OPEN_PARENTHESIS + CLOSE_PARENTHESIS + SEMI_COLAN + NEW_LINE
-                + EIGHT_SPACE_INDENTATION + smallCase + IMPL + PERIOD + ADD_STRING + AUGMENTATION + OPEN_PARENTHESIS
-                + THIS + CLOSE_PARENTHESIS + SEMI_COLAN + NEW_LINE;
-
-    }
-
-    /**
      * Adds import for array list.
      *
      * @param curNode   current YANG node

@@ -25,24 +25,12 @@ import java.io.PrintWriter;
 import java.util.ArrayList;
 import java.util.List;
 
-import org.onosproject.yangutils.datamodel.YangNode;
-import org.onosproject.yangutils.translator.exception.TranslatorException;
-import org.onosproject.yangutils.translator.tojava.JavaFileInfo;
-import org.onosproject.yangutils.translator.tojava.JavaFileInfoContainer;
-
-import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.getParentNodeInGenCode;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getJavaPackageFromPackagePath;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getPackageDirPathFromJavaJPackage;
 import static org.onosproject.yangutils.utils.UtilConstants.EIGHT_SPACE_INDENTATION;
 import static org.onosproject.yangutils.utils.UtilConstants.EMPTY_STRING;
 import static org.onosproject.yangutils.utils.UtilConstants.FOUR_SPACE_INDENTATION;
 import static org.onosproject.yangutils.utils.UtilConstants.MULTIPLE_NEW_LINE;
 import static org.onosproject.yangutils.utils.UtilConstants.NEW_LINE;
-import static org.onosproject.yangutils.utils.UtilConstants.SLASH;
 import static org.onosproject.yangutils.utils.UtilConstants.SPACE;
-import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.addPackageInfo;
-import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.createDirectories;
-import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getAbsolutePackagePath;
 
 /**
  * Represents utility to handle file system operations.
@@ -56,50 +44,6 @@ public final class FileSystemUtil {
     }
 
     /**
-     * Checks if the package directory structure created.
-     *
-     * @param pkg Package to check if it is created
-     * @return existence status of package
-     */
-    public static boolean doesPackageExist(String pkg) {
-        File pkgDir = new File(getPackageDirPathFromJavaJPackage(pkg));
-        File pkgWithFile = new File(pkgDir + SLASH + "package-info.java");
-        return pkgDir.exists() && pkgWithFile.isFile();
-    }
-
-    /**
-     * Creates a package structure with package info java file if not present.
-     *
-     * @param yangNode YANG node for which code is being generated
-     * @throws IOException any IO exception
-     */
-    public static void createPackage(YangNode yangNode) throws IOException {
-        if (!(yangNode instanceof JavaFileInfoContainer)) {
-            throw new TranslatorException("current node must have java file info");
-        }
-        String pkgInfo;
-        JavaFileInfo javaFileInfo = ((JavaFileInfoContainer) yangNode).getJavaFileInfo();
-        String pkg = getAbsolutePackagePath(javaFileInfo.getBaseCodeGenPath(), javaFileInfo.getPackageFilePath());
-        if (!doesPackageExist(pkg)) {
-            try {
-                File pack = createDirectories(pkg);
-                YangNode parent = getParentNodeInGenCode(yangNode);
-                if (parent != null) {
-                    pkgInfo = ((JavaFileInfoContainer) parent).getJavaFileInfo().getJavaName();
-                    addPackageInfo(pack, pkgInfo, getJavaPackageFromPackagePath(pkg), true,
-                            ((JavaFileInfoContainer) parent).getJavaFileInfo().getPluginConfig());
-                } else {
-                    pkgInfo = ((JavaFileInfoContainer) yangNode).getJavaFileInfo().getJavaName();
-                    addPackageInfo(pack, pkgInfo, getJavaPackageFromPackagePath(pkg), false,
-                            ((JavaFileInfoContainer) yangNode).getJavaFileInfo().getPluginConfig());
-                }
-            } catch (IOException e) {
-                throw new IOException("failed to create package-info file");
-            }
-        }
-    }
-
-    /**
      * Reads the contents from source file and append its contents to append
      * file.
      *

@@ -16,10 +16,7 @@
 
 package org.onosproject.yangutils.utils.io.impl;
 
-import org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax;
-import org.onosproject.yangutils.translator.tojava.utils.YangPluginConfig;
-
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCamelCase;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCamelCase;
 import static org.onosproject.yangutils.utils.UtilConstants.BUILDER;
 import static org.onosproject.yangutils.utils.UtilConstants.BUILDER_CLASS_JAVA_DOC;
 import static org.onosproject.yangutils.utils.UtilConstants.BUILDER_INTERFACE_JAVA_DOC;
@@ -202,7 +199,7 @@ public final class JavaDocGen {
      */
     public static String getJavaDoc(JavaDocType type, String name, boolean isList, YangPluginConfig pluginConfig) {
 
-        name = JavaIdentifierSyntax.getSmallCase(getCamelCase(name, pluginConfig.getConflictResolver()));
+        name = YangIoUtils.getSmallCase(getCamelCase(name, pluginConfig.getConflictResolver()));
         switch (type) {
             case IMPL_CLASS: {
                 return generateForClass(name);

@@ -19,73 +19,60 @@ package org.onosproject.yangutils.utils.io.impl;
 import java.io.BufferedReader;
 import java.io.BufferedWriter;
 import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileOutputStream;
 import java.io.FileReader;
 import java.io.FileWriter;
 import java.io.IOException;
-import java.io.InputStream;
-import java.io.ObjectInputStream;
-import java.io.ObjectOutputStream;
-import java.nio.file.Files;
-import java.nio.file.StandardCopyOption;
 import java.util.ArrayList;
-import java.util.Enumeration;
-import java.util.Iterator;
+import java.util.Arrays;
 import java.util.LinkedList;
 import java.util.List;
-import java.util.Set;
 import java.util.Stack;
-import java.util.jar.JarEntry;
-import java.util.jar.JarFile;
 import java.util.regex.Pattern;
-
 import org.apache.commons.io.FileUtils;
-import org.apache.maven.artifact.repository.ArtifactRepository;
-import org.apache.maven.model.Dependency;
-import org.apache.maven.model.Resource;
-import org.apache.maven.project.MavenProject;
-import org.onosproject.yangutils.datamodel.YangNode;
-import org.onosproject.yangutils.plugin.manager.YangFileInfo;
-import org.onosproject.yangutils.translator.tojava.utils.YangPluginConfig;
-import org.slf4j.Logger;
-import org.sonatype.plexus.build.incremental.BuildContext;
-
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCamelCase;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getPackageDirPathFromJavaJPackage;
+import org.onosproject.yangutils.translator.exception.TranslatorException;
+
+import static org.onosproject.yangutils.utils.UtilConstants.COLAN;
 import static org.onosproject.yangutils.utils.UtilConstants.COMMA;
 import static org.onosproject.yangutils.utils.UtilConstants.EMPTY_STRING;
 import static org.onosproject.yangutils.utils.UtilConstants.HASH;
 import static org.onosproject.yangutils.utils.UtilConstants.HYPHEN;
-import static org.onosproject.yangutils.utils.UtilConstants.JAR;
+import static org.onosproject.yangutils.utils.UtilConstants.JAVA_KEY_WORDS;
 import static org.onosproject.yangutils.utils.UtilConstants.NEW_LINE;
 import static org.onosproject.yangutils.utils.UtilConstants.OPEN_PARENTHESIS;
 import static org.onosproject.yangutils.utils.UtilConstants.ORG;
 import static org.onosproject.yangutils.utils.UtilConstants.PACKAGE;
 import static org.onosproject.yangutils.utils.UtilConstants.PERIOD;
+import static org.onosproject.yangutils.utils.UtilConstants.REGEX_FOR_DIGITS_WITH_SINGLE_LETTER;
+import static org.onosproject.yangutils.utils.UtilConstants.REGEX_FOR_FIRST_DIGIT;
+import static org.onosproject.yangutils.utils.UtilConstants.REGEX_FOR_HYPHEN;
+import static org.onosproject.yangutils.utils.UtilConstants.REGEX_FOR_IDENTIFIER_SPECIAL_CHAR;
+import static org.onosproject.yangutils.utils.UtilConstants.REGEX_FOR_PERIOD;
+import static org.onosproject.yangutils.utils.UtilConstants.REGEX_FOR_SINGLE_LETTER;
+import static org.onosproject.yangutils.utils.UtilConstants.REGEX_FOR_UNDERSCORE;
+import static org.onosproject.yangutils.utils.UtilConstants.REGEX_WITH_ALL_SPECIAL_CHAR;
+import static org.onosproject.yangutils.utils.UtilConstants.REGEX_WITH_DIGITS;
+import static org.onosproject.yangutils.utils.UtilConstants.REGEX_WITH_SINGLE_CAPITAL_CASE;
+import static org.onosproject.yangutils.utils.UtilConstants.REGEX_WITH_SINGLE_CAPITAL_CASE_AND_DIGITS_SMALL_CASES;
+import static org.onosproject.yangutils.utils.UtilConstants.REGEX_WITH_UPPERCASE;
 import static org.onosproject.yangutils.utils.UtilConstants.SEMI_COLAN;
 import static org.onosproject.yangutils.utils.UtilConstants.SLASH;
 import static org.onosproject.yangutils.utils.UtilConstants.SPACE;
-import static org.onosproject.yangutils.utils.UtilConstants.TEMP;
 import static org.onosproject.yangutils.utils.UtilConstants.TWELVE_SPACE_INDENTATION;
-import static org.onosproject.yangutils.utils.UtilConstants.YANG_RESOURCES;
+import static org.onosproject.yangutils.utils.UtilConstants.UNDER_SCORE;
+import static org.onosproject.yangutils.utils.UtilConstants.YANG_AUTO_PREFIX;
 import static org.onosproject.yangutils.utils.io.impl.FileSystemUtil.appendFileContents;
 import static org.onosproject.yangutils.utils.io.impl.FileSystemUtil.updateFileHandle;
-import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.getJavaDoc;
 import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.JavaDocType.PACKAGE_INFO;
-import static org.slf4j.LoggerFactory.getLogger;
+import static org.onosproject.yangutils.utils.io.impl.JavaDocGen.getJavaDoc;
 
 /**
  * Represents common utility functionalities for code generation.
  */
 public final class YangIoUtils {
 
-    private static final Logger log = getLogger(YangIoUtils.class);
-    private static final String TARGET_RESOURCE_PATH = SLASH + TEMP + SLASH + YANG_RESOURCES + SLASH;
     private static final int LINE_SIZE = 118;
     private static final int SUB_LINE_SIZE = 112;
     private static final int ZERO = 0;
-    private static final String SERIALIZED_FILE_EXTENSION = ".ser";
 
     /**
      * Creates an instance of YANG io utils.
@@ -223,19 +210,6 @@ public final class YangIoUtils {
     }
 
     /**
-     * Adds generated source directory to the compilation root.
-     *
-     * @param source  directory
-     * @param project current maven project
-     * @param context current build context
-     */
-    public static void addToCompilationRoot(String source, MavenProject project, BuildContext context) {
-        project.addCompileSourceRoot(source);
-        context.refresh(project.getBasedir());
-        log.info("Source directory added to compilation root: " + source);
-    }
-
-    /**
      * Removes extra char from the string.
      *
      * @param valueString    string to be trimmed
@@ -303,49 +277,6 @@ public final class YangIoUtils {
     }
 
     /**
-     * Copies YANG files to the current project's output directory.
-     *
-     * @param yangFileInfo list of YANG files
-     * @param outputDir    project's output directory
-     * @param project      maven project
-     * @throws IOException when fails to copy files to destination resource directory
-     */
-    public static void copyYangFilesToTarget(Set<YangFileInfo> yangFileInfo, String outputDir, MavenProject project)
-            throws IOException {
-
-        List<File> files = getListOfFile(yangFileInfo);
-
-        String path = outputDir + TARGET_RESOURCE_PATH;
-        File targetDir = new File(path);
-        targetDir.mkdirs();
-
-        for (File file : files) {
-            Files.copy(file.toPath(),
-                    new File(path + file.getName()).toPath(),
-                    StandardCopyOption.REPLACE_EXISTING);
-        }
-        addToProjectResource(outputDir + SLASH + TEMP + SLASH, project);
-    }
-
-    /**
-     * Provides a list of files from list of strings.
-     *
-     * @param yangFileInfo set of yang file information
-     * @return list of files
-     */
-    private static List<File> getListOfFile(Set<YangFileInfo> yangFileInfo) {
-        List<File> files = new ArrayList<>();
-        Iterator<YangFileInfo> yangFileIterator = yangFileInfo.iterator();
-        while (yangFileIterator.hasNext()) {
-            YangFileInfo yangFile = yangFileIterator.next();
-            if (yangFile.isForTranslator()) {
-                files.add(new File(yangFile.getYangFileName()));
-            }
-        }
-        return files;
-    }
-
-    /**
      * Merges the temp java files to main java files.
      *
      * @param appendFile temp file
@@ -501,173 +432,258 @@ public final class YangIoUtils {
     }
 
     /**
-     * Serializes data-model.
+     * Returns the java Package from package path.
      *
-     * @param directory base directory for serialized files
-     * @param fileInfoSet YANG file info set
-     * @param project maven project
-     * @param operation true if need to add to resource
-     * @throws IOException when fails to do IO operations
+     * @param packagePath package path
+     * @return java package
      */
-    public static void serializeDataModel(String directory, Set<YangFileInfo> fileInfoSet,
-            MavenProject project, boolean operation) throws IOException {
+    public static String getJavaPackageFromPackagePath(String packagePath) {
+        return packagePath.replace(SLASH, PERIOD);
+    }
 
-        String serFileDirPath = directory + TARGET_RESOURCE_PATH;
-        File dir = new File(serFileDirPath);
-        dir.mkdirs();
+    /**
+     * Returns the directory path corresponding to java package.
+     *
+     * @param packagePath package path
+     * @return java package
+     */
+    public static String getPackageDirPathFromJavaJPackage(String packagePath) {
+        return packagePath.replace(PERIOD, SLASH);
+    }
 
-        if (operation) {
-            addToProjectResource(directory + SLASH + TEMP + SLASH, project);
+    /**
+     * Returns the YANG identifier name as java identifier with first letter
+     * in small.
+     *
+     * @param yangIdentifier identifier in YANG file.
+     * @return corresponding java identifier
+     */
+    public static String getSmallCase(String yangIdentifier) {
+        return yangIdentifier.substring(0, 1).toLowerCase() + yangIdentifier.substring(1);
+    }
+
+    /**
+     * Returns the YANG identifier name as java identifier with first letter
+     * in capital.
+     *
+     * @param yangIdentifier identifier in YANG file
+     * @return corresponding java identifier
+     */
+    public static String getCapitalCase(String yangIdentifier) {
+        yangIdentifier = yangIdentifier.substring(0, 1).toUpperCase() + yangIdentifier.substring(1);
+        return restrictConsecutiveCapitalCase(yangIdentifier);
     }
 
-        for (YangFileInfo fileInfo : fileInfoSet) {
+    /**
+     * Restricts consecutive capital cased string as a rule in camel case.
+     *
+     * @param consecCapitalCaseRemover which requires the restriction of consecutive capital case
+     * @return string without consecutive capital case
+     */
+    public static String restrictConsecutiveCapitalCase(String consecCapitalCaseRemover) {
 
-            String serFileName = serFileDirPath + getCamelCase(fileInfo.getRootNode().getName(), null)
-                    + SERIALIZED_FILE_EXTENSION;
-            fileInfo.setSerializedFile(serFileName);
-            FileOutputStream fileOutputStream = new FileOutputStream(serFileName);
-            ObjectOutputStream objectOutputStream = new ObjectOutputStream(fileOutputStream);
-            objectOutputStream.writeObject(fileInfo.getRootNode());
-            objectOutputStream.close();
-            fileOutputStream.close();
+        for (int k = 0; k < consecCapitalCaseRemover.length(); k++) {
+            if (k + 1 < consecCapitalCaseRemover.length()) {
+                if (Character.isUpperCase(consecCapitalCaseRemover.charAt(k))) {
+                    if (Character.isUpperCase(consecCapitalCaseRemover.charAt(k + 1))) {
+                        consecCapitalCaseRemover = consecCapitalCaseRemover.substring(0, k + 1)
+                                + consecCapitalCaseRemover.substring(k + 1, k + 2).toLowerCase()
+                                + consecCapitalCaseRemover.substring(k + 2);
                     }
                 }
-
-    /* Adds directory to resources of project */
-    private static void addToProjectResource(String dir, MavenProject project) {
-        Resource rsc = new Resource();
-        rsc.setDirectory(dir);
-        project.addResource(rsc);
+            }
+        }
+        return consecCapitalCaseRemover;
     }
 
     /**
-     * Returns de-serializes YANG data-model nodes.
+     * Adds prefix, if the string begins with digit or is a java key word.
      *
-     * @param serailizedfileInfoSet YANG file info set
-     * @return de-serializes YANG data-model nodes
-     * @throws IOException when fails do IO operations
+     * @param camelCasePrefix string for adding prefix
+     * @param conflictResolver object of YANG to java naming conflict util
+     * @return prefixed camel case string
      */
-    public static List<YangNode> deSerializeDataModel(List<String> serailizedfileInfoSet) throws IOException {
+    public static String addPrefix(String camelCasePrefix, YangToJavaNamingConflictUtil conflictResolver) {
 
-        List<YangNode> nodes = new ArrayList<>();
-        for (String fileInfo : serailizedfileInfoSet) {
-            YangNode node = null;
-            try {
-                FileInputStream fileInputStream = new FileInputStream(fileInfo);
-                ObjectInputStream objectInputStream = new ObjectInputStream(fileInputStream);
-                node = (YangNode) objectInputStream.readObject();
-                nodes.add(node);
-                objectInputStream.close();
-                fileInputStream.close();
-            } catch (IOException | ClassNotFoundException e) {
-                throw new IOException(fileInfo + " not found.");
+        String prefix = getPrefixForIdentifier(conflictResolver);
+        if (camelCasePrefix.matches(REGEX_FOR_FIRST_DIGIT)) {
+            camelCasePrefix = prefix + camelCasePrefix;
         }
+        if (JAVA_KEY_WORDS.contains(camelCasePrefix)) {
+            camelCasePrefix = prefix + camelCasePrefix.substring(0, 1).toUpperCase()
+                    + camelCasePrefix.substring(1);
         }
-        return nodes;
+        return camelCasePrefix;
     }
 
     /**
-     * Resolves inter jar dependencies.
+     * Applies the rule that a string does not end with a capitalized letter and capitalizes
+     * the letter next to a number in an array.
      *
-     * @param project current maven project
-     * @param localRepository local maven repository
-     * @param remoteRepos list of remote repository
-     * @param directory directory for serialized files
-     * @return list of resolved datamodel nodes
-     * @throws IOException when fails to do IO operations
+     * @param stringArray containing strings for camel case separation
+     * @param conflictResolver object of YANG to java naming conflict util
+     * @return camel case rule checked string
      */
-    public static List<YangNode> resolveInterJarDependencies(MavenProject project, ArtifactRepository localRepository,
-            List<ArtifactRepository> remoteRepos, String directory) throws IOException {
+    public static String applyCamelCaseRule(String[] stringArray, YangToJavaNamingConflictUtil conflictResolver) {
 
-        List<String> dependeciesJarPaths = resolveDependecyJarPath(project, localRepository, remoteRepos);
-        List<YangNode> resolvedDataModelNodes = new ArrayList<>();
-        for (String dependecy : dependeciesJarPaths) {
-            resolvedDataModelNodes.addAll(deSerializeDataModel(parseJarFile(dependecy, directory)));
+        String ruleChecker = stringArray[0].toLowerCase();
+        int i;
+        if (ruleChecker.matches(REGEX_FOR_FIRST_DIGIT)) {
+            i = 0;
+            ruleChecker = EMPTY_STRING;
+        } else {
+            i = 1;
+        }
+        for (; i < stringArray.length; i++) {
+            if (i + 1 == stringArray.length) {
+                if (stringArray[i].matches(REGEX_FOR_SINGLE_LETTER)
+                        || stringArray[i].matches(REGEX_FOR_DIGITS_WITH_SINGLE_LETTER)) {
+                    ruleChecker = ruleChecker + stringArray[i].toLowerCase();
+                    break;
+                }
+            }
+            if (stringArray[i].matches(REGEX_FOR_FIRST_DIGIT)) {
+                for (int j = 0; j < stringArray[i].length(); j++) {
+                    char letterCheck = stringArray[i].charAt(j);
+                    if (Character.isLetter(letterCheck)) {
+                        stringArray[i] = stringArray[i].substring(0, j)
+                                + stringArray[i].substring(j, j + 1).toUpperCase() + stringArray[i].substring(j + 1);
+                        break;
+                    }
+                }
+                ruleChecker = ruleChecker + stringArray[i];
+            } else {
+                ruleChecker = ruleChecker + stringArray[i].substring(0, 1).toUpperCase() + stringArray[i].substring(1);
             }
-        return resolvedDataModelNodes;
+        }
+        String ruleCheckerWithPrefix = addPrefix(ruleChecker, conflictResolver);
+        return restrictConsecutiveCapitalCase(ruleCheckerWithPrefix);
     }
 
     /**
-     * Returns list of jar path.
+     * Resolves the conflict when input has upper case.
      *
-     * @return list of jar paths
+     * @param stringArray containing strings for upper case conflict resolver
+     * @param conflictResolver object of YANG to java naming conflict util
+     * @return camel cased string
      */
-    private static List<String> resolveDependecyJarPath(MavenProject project, ArtifactRepository localRepository,
-            List<ArtifactRepository> remoteRepos) {
+    public static String upperCaseConflictResolver(String[] stringArray,
+                                                   YangToJavaNamingConflictUtil conflictResolver) {
+
+        for (int l = 0; l < stringArray.length; l++) {
+            String[] upperCaseSplitArray = stringArray[l].split(REGEX_WITH_UPPERCASE);
+            for (int m = 0; m < upperCaseSplitArray.length; m++) {
+                if (upperCaseSplitArray[m].matches(REGEX_WITH_SINGLE_CAPITAL_CASE)) {
+                    int check = m;
+                    while (check + 1 < upperCaseSplitArray.length) {
+                        if (upperCaseSplitArray[check + 1].matches(REGEX_WITH_SINGLE_CAPITAL_CASE)) {
+                            upperCaseSplitArray[check + 1] = upperCaseSplitArray[check + 1].toLowerCase();
+                            check = check + 1;
+                        } else if (upperCaseSplitArray[check + 1]
+                                .matches(REGEX_WITH_SINGLE_CAPITAL_CASE_AND_DIGITS_SMALL_CASES)) {
+                            upperCaseSplitArray[check + 1] = upperCaseSplitArray[check + 1].toLowerCase();
+                            break;
+                        } else {
+                            break;
+                        }
+                    }
+                }
+            }
+            StringBuilder strBuilder = new StringBuilder();
+            for (String element : upperCaseSplitArray) {
+                strBuilder.append(element);
+            }
+            stringArray[l] = strBuilder.toString();
+        }
+        List<String> result = new ArrayList<String>();
+        for (String element : stringArray) {
+            String[] capitalCaseSplitArray = element.split(REGEX_WITH_UPPERCASE);
+            for (String letter : capitalCaseSplitArray) {
+                String[] arrayForAddition = letter.split(REGEX_WITH_DIGITS);
+                List<String> list = Arrays.asList(arrayForAddition);
+                for (String str : list) {
+                    if (str != null && !str.isEmpty()) {
+                        result.add(str);
+                    }
+                }
+            }
+        }
+        stringArray = result.toArray(new String[result.size()]);
+        return applyCamelCaseRule(stringArray, conflictResolver);
+    }
 
-        StringBuilder path = new StringBuilder();
-        List<String> jarPaths = new ArrayList<>();
-        for (Dependency dependency : project.getDependencies()) {
+    /**
+     * Returns the YANG identifier name as java identifier.
+     *
+     * @param yangIdentifier identifier in YANG file
+     * @param conflictResolver object of YANG to java naming conflict util
+     * @return corresponding java identifier
+     */
+    public static String getCamelCase(String yangIdentifier, YangToJavaNamingConflictUtil conflictResolver) {
 
-            path.append(localRepository.getBasedir());
-            path.append(SLASH);
-            path.append(getPackageDirPathFromJavaJPackage(dependency.getGroupId()));
-            path.append(SLASH);
-            path.append(dependency.getArtifactId());
-            path.append(SLASH);
-            path.append(dependency.getVersion());
-            path.append(SLASH);
-            path.append(dependency.getArtifactId() + HYPHEN + dependency.getVersion() + PERIOD + JAR);
-            File jarFile = new File(path.toString());
-            if (jarFile.exists()) {
-                jarPaths.add(path.toString());
+        if (conflictResolver != null) {
+            String replacementForHyphen = conflictResolver.getReplacementForHyphen();
+            String replacementForPeriod = conflictResolver.getReplacementForPeriod();
+            String replacementForUnderscore = conflictResolver.getReplacementForUnderscore();
+            if (replacementForPeriod != null) {
+                yangIdentifier = yangIdentifier.replaceAll(REGEX_FOR_PERIOD,
+                        PERIOD + replacementForPeriod.toLowerCase() + PERIOD);
             }
-            path.delete(0, path.length());
+            if (replacementForUnderscore != null) {
+                yangIdentifier = yangIdentifier.replaceAll(REGEX_FOR_UNDERSCORE,
+                        UNDER_SCORE + replacementForUnderscore.toLowerCase() + UNDER_SCORE);
             }
-
-        for (ArtifactRepository repo : remoteRepos) {
-            // TODO: add resolver for remote repo.
+            if (replacementForHyphen != null) {
+                yangIdentifier = yangIdentifier.replaceAll(REGEX_FOR_HYPHEN,
+                        HYPHEN + replacementForHyphen.toLowerCase() + HYPHEN);
+            }
+        }
+        yangIdentifier = yangIdentifier.replaceAll(REGEX_FOR_IDENTIFIER_SPECIAL_CHAR, COLAN);
+        String[] strArray = yangIdentifier.split(COLAN);
+        if (strArray[0].isEmpty()) {
+            List<String> stringArrangement = new ArrayList<String>();
+            for (int i = 1; i < strArray.length; i++) {
+                stringArrangement.add(strArray[i]);
             }
-        return jarPaths;
+            strArray = stringArrangement.toArray(new String[stringArrangement.size()]);
+        }
+        return upperCaseConflictResolver(strArray, conflictResolver);
     }
 
     /**
-     * Parses jar file and returns list of serialized file names.
+     * Prefix for adding with identifier and namespace, when it is a java keyword or starting with digits.
      *
-     * @param jarFile jar file to be parsed
-     * @param directory directory for keeping the searized files
-     * @return list of serialized files
-     * @throws IOException when fails to do IO operations
+     * @param conflictResolver object of YANG to java naming conflict util
+     * @return prefix which needs to be added
      */
-    public static List<String> parseJarFile(String jarFile, String directory)
-            throws IOException {
+    public static String getPrefixForIdentifier(YangToJavaNamingConflictUtil conflictResolver) {
 
-        List<String> serailizedFiles = new ArrayList<>();
-        JarFile jar = new JarFile(jarFile);
-        Enumeration<?> enumEntries = jar.entries();
-
-        File serializedFileDir = new File(directory);
-        serializedFileDir.mkdirs();
-        while (enumEntries.hasMoreElements()) {
-            JarEntry file = (JarEntry) enumEntries.nextElement();
-            if (file.getName().endsWith(SERIALIZED_FILE_EXTENSION)) {
-                if (file.getName().contains(SLASH)) {
-                    String[] strArray = file.getName().split(SLASH);
-                    String tempPath = "";
-                    for (int i = 0; i < strArray.length - 1; i++) {
-                        tempPath = SLASH + tempPath + SLASH + strArray[i];
-                    }
-                    File dir = new File(directory + tempPath);
-                    dir.mkdirs();
-                }
-                File serailizedFile = new File(directory + SLASH + file.getName());
-                if (file.isDirectory()) {
-                    serailizedFile.mkdirs();
-                    continue;
+        String prefixForIdentifier = null;
+        if (conflictResolver != null) {
+            prefixForIdentifier = conflictResolver.getPrefixForIdentifier();
         }
-                InputStream inputStream = jar.getInputStream(file);
-
-                FileOutputStream fileOutputStream = new FileOutputStream(serailizedFile);
-                while (inputStream.available() > 0) {
-                    fileOutputStream.write(inputStream.read());
+        if (prefixForIdentifier != null) {
+            prefixForIdentifier = prefixForIdentifier.replaceAll(REGEX_WITH_ALL_SPECIAL_CHAR, COLAN);
+            String[] strArray = prefixForIdentifier.split(COLAN);
+            try {
+                if (strArray[0].isEmpty()) {
+                    List<String> stringArrangement = new ArrayList<String>();
+                    for (int i = 1; i < strArray.length; i++) {
+                        stringArrangement.add(strArray[i]);
                     }
-                fileOutputStream.close();
-                inputStream.close();
-                serailizedFiles.add(serailizedFile.toString());
+                    strArray = stringArrangement.toArray(new String[stringArrangement.size()]);
                 }
+                prefixForIdentifier = strArray[0];
+                for (int j = 1; j < strArray.length; j++) {
+                    prefixForIdentifier = prefixForIdentifier + strArray[j].substring(0, 1).toUpperCase() +
+                            strArray[j].substring(1);
                 }
-        jar.close();
-        return serailizedFiles;
+            } catch (ArrayIndexOutOfBoundsException outOfBoundsException) {
+                throw new TranslatorException("The given prefix in pom.xml is invalid.");
+            }
+        } else {
+            prefixForIdentifier = YANG_AUTO_PREFIX;
+        }
+        return prefixForIdentifier;
     }
-
 }

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package org.onosproject.yangutils.translator.tojava.utils;
+package org.onosproject.yangutils.utils.io.impl;
 
 /**
  * Representation of plugin configurations required for YANG utils.

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package org.onosproject.yangutils.translator.tojava.utils;
+package org.onosproject.yangutils.utils.io.impl;
 
 /**
  * Representation of YANG to java naming conflict resolver util.

@@ -22,7 +22,7 @@ import org.onosproject.yangutils.linker.impl.YangLinkerManager;
 import org.onosproject.yangutils.parser.exceptions.ParserException;
 import org.onosproject.yangutils.parser.impl.YangUtilsParserManager;
 import org.onosproject.yangutils.plugin.manager.YangUtilManager;
-import org.onosproject.yangutils.translator.tojava.utils.YangPluginConfig;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 import org.onosproject.yangutils.utils.io.impl.YangFileScanner;
 
 import java.io.IOException;

@@ -34,10 +34,9 @@ import org.onosproject.yangutils.datamodel.utils.ResolvableStatus;
 import org.onosproject.yangutils.linker.impl.YangLinkerManager;
 import org.onosproject.yangutils.parser.exceptions.ParserException;
 import org.onosproject.yangutils.parser.impl.YangUtilsParserManager;
-import org.onosproject.yangutils.plugin.manager.YangFileInfo;
 import org.onosproject.yangutils.plugin.manager.YangUtilManager;
-import org.onosproject.yangutils.translator.tojava.utils.YangPluginConfig;
 import org.onosproject.yangutils.utils.io.impl.YangFileScanner;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 import static org.hamcrest.CoreMatchers.nullValue;
 import static org.hamcrest.MatcherAssert.assertThat;
@@ -67,29 +66,30 @@ public class InterFileLinkingTest {
         String searchDir = "src/test/resources/interfiletype";
         utilManager.createYangFileInfoSet(YangFileScanner.getYangFiles(searchDir));
         utilManager.parseYangFileInfoSet();
+        utilManager.createYangNodeSet();
 
         YangNode refNode = null;
         YangNode selfNode = null;
 
         // Create YANG node set
-        yangLinkerManager.createYangNodeSet(utilManager.getYangFileInfoSet());
+        yangLinkerManager.createYangNodeSet(utilManager.getYangNodeSet());
 
         // Add references to import list.
-        yangLinkerManager.addRefToYangFilesImportList(utilManager.getYangFileInfoSet());
+        yangLinkerManager.addRefToYangFilesImportList(utilManager.getYangNodeSet());
 
         // Carry out inter-file linking.
-        yangLinkerManager.processInterFileLinking(utilManager.getYangFileInfoSet());
+        yangLinkerManager.processInterFileLinking(utilManager.getYangNodeSet());
 
-        Iterator<YangFileInfo> yangFileInfoIterator = utilManager.getYangFileInfoSet().iterator();
+        Iterator<YangNode> yangNodeIterator = utilManager.getYangNodeSet().iterator();
 
-        YangFileInfo yangFileInfo = yangFileInfoIterator.next();
+        YangNode rootNode = yangNodeIterator.next();
 
-        if (yangFileInfo.getRootNode().getName().equals("module1")) {
-            selfNode = yangFileInfo.getRootNode();
-            refNode = yangFileInfoIterator.next().getRootNode();
+        if (rootNode.getName().equals("module1")) {
+            selfNode = rootNode;
+            refNode = yangNodeIterator.next();
         } else {
-            refNode = yangFileInfo.getRootNode();
-            selfNode = yangFileInfoIterator.next().getRootNode();
+            refNode = rootNode;
+            selfNode = yangNodeIterator.next();
         }
 
         // Check whether the data model tree returned is of type module.
@@ -136,29 +136,30 @@ public class InterFileLinkingTest {
         String searchDir = "src/test/resources/interfileuses";
         utilManager.createYangFileInfoSet(YangFileScanner.getYangFiles(searchDir));
         utilManager.parseYangFileInfoSet();
+        utilManager.createYangNodeSet();
 
         YangNode refNode = null;
         YangNode selfNode = null;
 
         // Create YANG node set
-        yangLinkerManager.createYangNodeSet(utilManager.getYangFileInfoSet());
+        yangLinkerManager.createYangNodeSet(utilManager.getYangNodeSet());
 
         // Add references to import list.
-        yangLinkerManager.addRefToYangFilesImportList(utilManager.getYangFileInfoSet());
+        yangLinkerManager.addRefToYangFilesImportList(utilManager.getYangNodeSet());
 
         // Carry out inter-file linking.
-        yangLinkerManager.processInterFileLinking(utilManager.getYangFileInfoSet());
+        yangLinkerManager.processInterFileLinking(utilManager.getYangNodeSet());
 
-        Iterator<YangFileInfo> yangFileInfoIterator = utilManager.getYangFileInfoSet().iterator();
+        Iterator<YangNode> yangNodeIterator = utilManager.getYangNodeSet().iterator();
 
-        YangFileInfo yangFileInfo = yangFileInfoIterator.next();
+        YangNode rootNode = yangNodeIterator.next();
 
-        if (yangFileInfo.getRootNode().getName().equals("module1")) {
-            selfNode = yangFileInfo.getRootNode();
-            refNode = yangFileInfoIterator.next().getRootNode();
+        if (rootNode.getName().equals("module1")) {
+            selfNode = rootNode;
+            refNode = yangNodeIterator.next();
         } else {
-            refNode = yangFileInfo.getRootNode();
-            selfNode = yangFileInfoIterator.next().getRootNode();
+            refNode = rootNode;
+            selfNode = yangNodeIterator.next();
         }
 
         // Check whether the data model tree returned is of type module.
@@ -193,14 +194,6 @@ public class InterFileLinkingTest {
         // Check whether uses get resolved.
         assertThat(uses.getResolvableStatus(),
                 is(ResolvableStatus.RESOLVED));
-
-//        leafIterator = yangNode.getListOfLeaf().listIterator();
-//        leafInfo = leafIterator.next();
-//
-//        // Check whether the information in the leaf is correct under module.
-//        assertThat(leafInfo.getName(), is("hello"));
-//        assertThat(leafInfo.getDataType().getDataTypeName(), is("string"));
-//        assertThat(leafInfo.getDataType().getDataType(), is(YangDataTypes.STRING));
     }
 
     /**
@@ -213,32 +206,33 @@ public class InterFileLinkingTest {
         String searchDir = "src/test/resources/interfiletypewithinclude";
         utilManager.createYangFileInfoSet(YangFileScanner.getYangFiles(searchDir));
         utilManager.parseYangFileInfoSet();
+        utilManager.createYangNodeSet();
 
         YangNode refNode = null;
         YangNode selfNode = null;
 
         // Create YANG node set
-        yangLinkerManager.createYangNodeSet(utilManager.getYangFileInfoSet());
+        yangLinkerManager.createYangNodeSet(utilManager.getYangNodeSet());
 
         // Carry out linking of sub module with module.
-        yangLinkerManager.linkSubModulesToParentModule(utilManager.getYangFileInfoSet());
+        yangLinkerManager.linkSubModulesToParentModule(utilManager.getYangNodeSet());
 
         // Add reference to include list.
-        yangLinkerManager.addRefToYangFilesIncludeList(utilManager.getYangFileInfoSet());
+        yangLinkerManager.addRefToYangFilesIncludeList(utilManager.getYangNodeSet());
 
         // Carry out inter-file linking.
-        yangLinkerManager.processInterFileLinking(utilManager.getYangFileInfoSet());
+        yangLinkerManager.processInterFileLinking(utilManager.getYangNodeSet());
 
-        Iterator<YangFileInfo> yangFileInfoIterator = utilManager.getYangFileInfoSet().iterator();
+        Iterator<YangNode> yangNodeIterator = utilManager.getYangNodeSet().iterator();
 
-        YangFileInfo yangFileInfo = yangFileInfoIterator.next();
+        YangNode rootNode = yangNodeIterator.next();
 
-        if (yangFileInfo.getRootNode().getName().equals("module1")) {
-            selfNode = yangFileInfo.getRootNode();
-            refNode = yangFileInfoIterator.next().getRootNode();
+        if (rootNode.getName().equals("module1")) {
+            selfNode = rootNode;
+            refNode = yangNodeIterator.next();
         } else {
-            refNode = yangFileInfo.getRootNode();
-            selfNode = yangFileInfoIterator.next().getRootNode();
+            refNode = rootNode;
+            selfNode = yangNodeIterator.next();
         }
 
         // Check whether the data model tree returned is of type module.
@@ -285,32 +279,33 @@ public class InterFileLinkingTest {
         String searchDir = "src/test/resources/interfileuseswithinclude";
         utilManager.createYangFileInfoSet(YangFileScanner.getYangFiles(searchDir));
         utilManager.parseYangFileInfoSet();
+        utilManager.createYangNodeSet();
 
         YangNode refNode = null;
         YangNode selfNode = null;
 
         // Create YANG node set
-        yangLinkerManager.createYangNodeSet(utilManager.getYangFileInfoSet());
+        yangLinkerManager.createYangNodeSet(utilManager.getYangNodeSet());
 
         // Carry out linking of sub module with module.
-        yangLinkerManager.linkSubModulesToParentModule(utilManager.getYangFileInfoSet());
+        yangLinkerManager.linkSubModulesToParentModule(utilManager.getYangNodeSet());
 
         // Add reference to include list.
-        yangLinkerManager.addRefToYangFilesIncludeList(utilManager.getYangFileInfoSet());
+        yangLinkerManager.addRefToYangFilesIncludeList(utilManager.getYangNodeSet());
 
         // Carry out inter-file linking.
-        yangLinkerManager.processInterFileLinking(utilManager.getYangFileInfoSet());
+        yangLinkerManager.processInterFileLinking(utilManager.getYangNodeSet());
 
-        Iterator<YangFileInfo> yangFileInfoIterator = utilManager.getYangFileInfoSet().iterator();
+        Iterator<YangNode> yangNodeIterator = utilManager.getYangNodeSet().iterator();
 
-        YangFileInfo yangFileInfo = yangFileInfoIterator.next();
+        YangNode rootNode = yangNodeIterator.next();
 
-        if (yangFileInfo.getRootNode().getName().equals("module1")) {
-            selfNode = yangFileInfo.getRootNode();
-            refNode = yangFileInfoIterator.next().getRootNode();
+        if (rootNode.getName().equals("module1")) {
+            selfNode = rootNode;
+            refNode = yangNodeIterator.next();
         } else {
-            refNode = yangFileInfo.getRootNode();
-            selfNode = yangFileInfoIterator.next().getRootNode();
+            refNode = rootNode;
+            selfNode = yangNodeIterator.next();
         }
 
         // Check whether the data model tree returned is of type module.
@@ -345,14 +340,6 @@ public class InterFileLinkingTest {
         // Check whether uses get resolved.
         assertThat(uses.getResolvableStatus(),
                 is(ResolvableStatus.RESOLVED));
-
-//        leafIterator = yangNode.getListOfLeaf().listIterator();
-//        leafInfo = leafIterator.next();
-//
-//        // Check whether the information in the leaf is correct under module.
-//        assertThat(leafInfo.getName(), is("hello"));
-//        assertThat(leafInfo.getDataType().getDataTypeName(), is("string"));
-//        assertThat(leafInfo.getDataType().getDataType(), is(YangDataTypes.STRING));
     }
 
     /**
@@ -365,29 +352,30 @@ public class InterFileLinkingTest {
         String searchDir = "src/test/resources/interfiletypewithrevision";
         utilManager.createYangFileInfoSet(YangFileScanner.getYangFiles(searchDir));
         utilManager.parseYangFileInfoSet();
+        utilManager.createYangNodeSet();
 
         YangNode refNode = null;
         YangNode selfNode = null;
 
         // Create YANG node set
-        yangLinkerManager.createYangNodeSet(utilManager.getYangFileInfoSet());
+        yangLinkerManager.createYangNodeSet(utilManager.getYangNodeSet());
 
         // Add references to import list.
-        yangLinkerManager.addRefToYangFilesImportList(utilManager.getYangFileInfoSet());
+        yangLinkerManager.addRefToYangFilesImportList(utilManager.getYangNodeSet());
 
         // Carry out inter-file linking.
-        yangLinkerManager.processInterFileLinking(utilManager.getYangFileInfoSet());
+        yangLinkerManager.processInterFileLinking(utilManager.getYangNodeSet());
 
-        Iterator<YangFileInfo> yangFileInfoIterator = utilManager.getYangFileInfoSet().iterator();
+        Iterator<YangNode> yangNodeIterator = utilManager.getYangNodeSet().iterator();
 
-        YangFileInfo yangFileInfo = yangFileInfoIterator.next();
+        YangNode rootNode = yangNodeIterator.next();
 
-        if (yangFileInfo.getRootNode().getName().equals("module1")) {
-            selfNode = yangFileInfo.getRootNode();
-            refNode = yangFileInfoIterator.next().getRootNode();
+        if (rootNode.getName().equals("module1")) {
+            selfNode = rootNode;
+            refNode = yangNodeIterator.next();
         } else {
-            refNode = yangFileInfo.getRootNode();
-            selfNode = yangFileInfoIterator.next().getRootNode();
+            refNode = rootNode;
+            selfNode = yangNodeIterator.next();
         }
 
         // Check whether the data model tree returned is of type module.
@@ -434,29 +422,30 @@ public class InterFileLinkingTest {
         String searchDir = "src/test/resources/interfiletypewithrevisioninname";
         utilManager.createYangFileInfoSet(YangFileScanner.getYangFiles(searchDir));
         utilManager.parseYangFileInfoSet();
+        utilManager.createYangNodeSet();
 
         YangNode refNode = null;
         YangNode selfNode = null;
 
         // Create YANG node set
-        yangLinkerManager.createYangNodeSet(utilManager.getYangFileInfoSet());
+        yangLinkerManager.createYangNodeSet(utilManager.getYangNodeSet());
 
         // Add references to import list.
-        yangLinkerManager.addRefToYangFilesImportList(utilManager.getYangFileInfoSet());
+        yangLinkerManager.addRefToYangFilesImportList(utilManager.getYangNodeSet());
 
         // Carry out inter-file linking.
-        yangLinkerManager.processInterFileLinking(utilManager.getYangFileInfoSet());
+        yangLinkerManager.processInterFileLinking(utilManager.getYangNodeSet());
 
-        Iterator<YangFileInfo> yangFileInfoIterator = utilManager.getYangFileInfoSet().iterator();
+        Iterator<YangNode> yangNodeIterator = utilManager.getYangNodeSet().iterator();
 
-        YangFileInfo yangFileInfo = yangFileInfoIterator.next();
+        YangNode rootNode = yangNodeIterator.next();
 
-        if (yangFileInfo.getRootNode().getName().equals("module1")) {
-            selfNode = yangFileInfo.getRootNode();
-            refNode = yangFileInfoIterator.next().getRootNode();
+        if (rootNode.getName().equals("module1")) {
+            selfNode = rootNode;
+            refNode = yangNodeIterator.next();
         } else {
-            refNode = yangFileInfo.getRootNode();
-            selfNode = yangFileInfoIterator.next().getRootNode();
+            refNode = rootNode;
+            selfNode = yangNodeIterator.next();
         }
 
         // Check whether the data model tree returned is of type module.
@@ -503,27 +492,28 @@ public class InterFileLinkingTest {
         String searchDir = "src/test/resources/hierarchicalinterfiletype";
         utilManager.createYangFileInfoSet(YangFileScanner.getYangFiles(searchDir));
         utilManager.parseYangFileInfoSet();
+        utilManager.createYangNodeSet();
 
         YangNode refNode1 = null;
         YangNode refNode2 = null;
         YangNode selfNode = null;
 
         // Create YANG node set
-        yangLinkerManager.createYangNodeSet(utilManager.getYangFileInfoSet());
+        yangLinkerManager.createYangNodeSet(utilManager.getYangNodeSet());
 
         // Add references to import list.
-        yangLinkerManager.addRefToYangFilesImportList(utilManager.getYangFileInfoSet());
+        yangLinkerManager.addRefToYangFilesImportList(utilManager.getYangNodeSet());
 
         // Carry out inter-file linking.
-        yangLinkerManager.processInterFileLinking(utilManager.getYangFileInfoSet());
+        yangLinkerManager.processInterFileLinking(utilManager.getYangNodeSet());
 
-        for (YangFileInfo yangFile : utilManager.getYangFileInfoSet()) {
-            if (yangFile.getRootNode().getName().equals("ietf-network-topology")) {
-                selfNode = yangFile.getRootNode();
-            } else if (yangFile.getRootNode().getName().equals("ietf-network")) {
-                refNode1 = yangFile.getRootNode();
+        for (YangNode rootNode : utilManager.getYangNodeSet()) {
+            if (rootNode.getName().equals("ietf-network-topology")) {
+                selfNode = rootNode;
+            } else if (rootNode.getName().equals("ietf-network")) {
+                refNode1 = rootNode;
             } else {
-                refNode2 = yangFile.getRootNode();
+                refNode2 = rootNode;
             }
         }
 
@@ -571,24 +561,25 @@ public class InterFileLinkingTest {
         String searchDir = "src/test/resources/hierarchicalintrawithinterfiletype";
         utilManager.createYangFileInfoSet(YangFileScanner.getYangFiles(searchDir));
         utilManager.parseYangFileInfoSet();
+        utilManager.createYangNodeSet();
 
         YangNode refNode1 = null;
         YangNode selfNode = null;
 
         // Create YANG node set
-        yangLinkerManager.createYangNodeSet(utilManager.getYangFileInfoSet());
+        yangLinkerManager.createYangNodeSet(utilManager.getYangNodeSet());
 
         // Add references to import list.
-        yangLinkerManager.addRefToYangFilesImportList(utilManager.getYangFileInfoSet());
+        yangLinkerManager.addRefToYangFilesImportList(utilManager.getYangNodeSet());
 
         // Carry out inter-file linking.
-        yangLinkerManager.processInterFileLinking(utilManager.getYangFileInfoSet());
+        yangLinkerManager.processInterFileLinking(utilManager.getYangNodeSet());
 
-        for (YangFileInfo yangFile : utilManager.getYangFileInfoSet()) {
-            if (yangFile.getRootNode().getName().equals("ietf-network")) {
-                selfNode = yangFile.getRootNode();
-            } else if (yangFile.getRootNode().getName().equals("ietf-inet-types")) {
-                refNode1 = yangFile.getRootNode();
+        for (YangNode rootNode : utilManager.getYangNodeSet()) {
+            if (rootNode.getName().equals("ietf-network")) {
+                selfNode = rootNode;
+            } else if (rootNode.getName().equals("ietf-inet-types")) {
+                refNode1 = rootNode;
             }
         }
 

-/*
- * Copyright 2016-present Open Networking Laboratory
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.onosproject.yangutils.linker;
-
-import java.io.File;
-import java.io.IOException;
-import java.util.ArrayList;
-import java.util.Iterator;
-import java.util.List;
-import java.util.ListIterator;
-
-import org.apache.maven.plugin.MojoExecutionException;
-import org.junit.Test;
-import org.onosproject.yangutils.datamodel.YangContainer;
-import org.onosproject.yangutils.datamodel.YangDerivedInfo;
-import org.onosproject.yangutils.datamodel.YangGrouping;
-import org.onosproject.yangutils.datamodel.YangLeaf;
-import org.onosproject.yangutils.datamodel.YangNode;
-import org.onosproject.yangutils.plugin.manager.YangFileInfo;
-import org.onosproject.yangutils.plugin.manager.YangUtilManager;
-import org.onosproject.yangutils.utils.io.impl.YangFileScanner;
-
-import static org.hamcrest.MatcherAssert.assertThat;
-import static org.hamcrest.core.Is.is;
-import static org.onosproject.yangutils.datamodel.YangDataTypes.DERIVED;
-import static org.onosproject.yangutils.datamodel.YangDataTypes.STRING;
-import static org.onosproject.yangutils.datamodel.utils.ResolvableStatus.RESOLVED;
-import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.deSerializeDataModel;
-import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.deleteDirectory;
-import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.parseJarFile;
-
-/**
- * Unit test case for inter-jar linker.
- */
-public class InterJarLinkingTest {
-
-    private final YangUtilManager utilManager = new YangUtilManager();
-
-    private static final String TARGET = "target/interJarFileLinking";
-    private static final String SEARCH_DIR_FOR_YANG_FILES = "src/test/resources/interJarFileLinking/yangFiles";
-    private static final String SEARCH_DIR_FOR_SINGLE_JAR_FILES = "src/test/resources/interJarFileLinking/"
-            + "jarFiles/single";
-    private static final String SEARCH_DIR_FOR_MULTI_JAR_FILES = "src/test/resources/interJarFileLinking/"
-            + "jarFiles/multi";
-
-    /**
-     * Unit test case for a single jar dependency.
-     *
-     * @throws IOException when fails to do IO operations
-     * @throws MojoExecutionException when fails to do mojo operations
-     */
-    @Test
-    public void processSingleJarLinking()
-            throws IOException, MojoExecutionException {
-        utilManager.createYangFileInfoSet(YangFileScanner.getYangFiles(SEARCH_DIR_FOR_YANG_FILES));
-
-        int size1 = utilManager.getYangFileInfoSet().size();
-
-        for (String file : getListOfTestJar(SEARCH_DIR_FOR_SINGLE_JAR_FILES)) {
-            addInterJarRootNodes(file);
-        }
-
-        utilManager.parseYangFileInfoSet();
-
-        utilManager.resolveDependenciesUsingLinker();
-
-        Iterator<YangFileInfo> yangFileInfoIterator = utilManager.getYangFileInfoSet().iterator();
-
-        YangFileInfo yangFileInfo = yangFileInfoIterator.next();
-
-        int size2 = utilManager.getYangFileInfoSet().size();
-        assertThat(true, is(size1 != size2));
-        assertThat(true, is(yangFileInfo.getRootNode().getName().equals("port-pair")));
-
-        deleteDirectory(TARGET);
-
-    }
-
-    /**
-     * Unit test case for a multiple jar dependency.
-     *
-     * @throws IOException when fails to do IO operations
-     * @throws MojoExecutionException when fails to do mojo operations
-     */
-    @Test
-    public void processMultipleJarLinking()
-            throws IOException, MojoExecutionException {
-        utilManager.createYangFileInfoSet(YangFileScanner.getYangFiles(SEARCH_DIR_FOR_YANG_FILES));
-
-        int size1 = utilManager.getYangFileInfoSet().size();
-
-        for (String file : getListOfTestJar(SEARCH_DIR_FOR_MULTI_JAR_FILES)) {
-            addInterJarRootNodes(file);
-        }
-
-        utilManager.parseYangFileInfoSet();
-
-        utilManager.resolveDependenciesUsingLinker();
-
-        Iterator<YangFileInfo> yangFileInfoIterator = utilManager.getYangFileInfoSet().iterator();
-
-        YangFileInfo yangFileInfo = yangFileInfoIterator.next();
-
-        int size2 = utilManager.getYangFileInfoSet().size();
-        assertThat(true, is(size1 != size2));
-        assertThat(true, is(yangFileInfo.getRootNode().getName().equals("port-pair")));
-
-        yangFileInfo = yangFileInfoIterator.next();
-        assertThat(true, is(yangFileInfo.getRootNode().getName().equals("flow-classifier")));
-
-        /*
-         * grouping flow-classifier {
-         *      container flow-classifier {
-         *           leaf id {
-         *                type flow-classifier-id;
-         *           }
-         *
-         *           leaf tenant-id {
-         *                type port-pair:tenant-id;
-         *           }
-         *           .
-         *           .
-         *           .
-         *
-         */
-
-        YangNode node = yangFileInfo.getRootNode();
-        node = node.getChild();
-        while (node != null) {
-            if (node instanceof YangGrouping) {
-                break;
-            }
-            node = node.getNextSibling();
-        }
-
-        node = node.getChild();
-        ListIterator<YangLeaf> leafIterator = ((YangContainer) node).getListOfLeaf().listIterator();
-        YangLeaf leafInfo = leafIterator.next();
-
-        assertThat(leafInfo.getName(), is("id"));
-        assertThat(leafInfo.getDataType().getDataTypeName(), is("flow-classifier-id"));
-        assertThat(leafInfo.getDataType().getDataType(), is(DERIVED));
-
-        leafInfo = leafIterator.next();
-
-        assertThat(leafInfo.getName(), is("tenant-id"));
-        assertThat(leafInfo.getDataType().getDataType(), is(DERIVED));
-
-        assertThat(true, is(((YangDerivedInfo<?>) leafInfo.getDataType().getDataTypeExtendedInfo()).getReferredTypeDef()
-                .getName().equals("tenant-id")));
-
-        assertThat(leafInfo.getDataType().getResolvableStatus(), is(RESOLVED));
-
-        YangDerivedInfo<?> derivedInfo = (YangDerivedInfo<?>) leafInfo.getDataType().getDataTypeExtendedInfo();
-
-        // Check for the effective built-in type.
-        assertThat(derivedInfo.getEffectiveBuiltInType(), is(STRING));
-
-        deleteDirectory(TARGET);
-    }
-
-    /**
-     * Returns list of test jar files.
-     *
-     * @param searchdir search directory
-     * @return list of test jar files
-     */
-    private List<String> getListOfTestJar(String searchdir) {
-        List<String> jarFiles = new ArrayList<>();
-
-        File directory = new File(searchdir + "/");
-        File[] files = directory.listFiles();
-
-        for (File file : files) {
-            jarFiles.add(file.toString());
-        }
-
-        return jarFiles;
-    }
-
-    /**
-     * Adds data model nodes of jar to file info set.
-     *
-     * @param jarFile jar file name
-     * @throws IOException when fails to do IO operations
-     */
-    private void addInterJarRootNodes(String jarFile) throws IOException {
-        try {
-            List<YangNode> interJarResolvedNodes = deSerializeDataModel(parseJarFile(jarFile, TARGET));
-
-            for (YangNode node : interJarResolvedNodes) {
-                YangFileInfo dependentFileInfo = new YangFileInfo();
-                dependentFileInfo.setRootNode(node);
-                dependentFileInfo.setForTranslator(false);
-                dependentFileInfo.setYangFileName(node.getName());
-                utilManager.getYangFileInfoSet().add(dependentFileInfo);
-            }
-        } catch (IOException e) {
-            throw new IOException("failed to resolve in interjar scenario.");
-        }
-    }
-
-}

@@ -17,6 +17,7 @@
 package org.onosproject.yangutils.linker;
 
 import java.io.IOException;
+import java.util.List;
 import java.util.ListIterator;
 import org.junit.Rule;
 import org.junit.Test;
@@ -92,13 +93,15 @@ public class IntraFileUsesLinkingTest {
         assertThat(uses.getResolvableStatus(),
                 is(ResolvableStatus.RESOLVED));
 
-//        leafIterator = yangNode.getListOfLeaf().listIterator();
-//        leafInfo = leafIterator.next();
-//
-//        // Check whether the information in the leaf is correct under module.
-//        assertThat(leafInfo.getName(), is("hello"));
-//        assertThat(leafInfo.getDataType().getDataTypeName(), is("string"));
-//        assertThat(leafInfo.getDataType().getDataType(), is(YangDataTypes.STRING));
+        ListIterator<List<YangLeaf>> leafIterator1 = uses.getUsesResolvedLeavesList().listIterator();
+        List<YangLeaf> leafInfo1 = leafIterator1.next();
+        ListIterator<YangLeaf> leafIterator2 = leafInfo1.listIterator();
+        YangLeaf leafInfo2 = leafIterator2.next();
+
+        // Check whether the information in the leaf is correct under module.
+        assertThat(leafInfo2.getName(), is("hello"));
+        assertThat(leafInfo2.getDataType().getDataTypeName(), is("string"));
+        assertThat(leafInfo2.getDataType().getDataType(), is(YangDataTypes.STRING));
 
     }
 
@@ -161,28 +164,32 @@ public class IntraFileUsesLinkingTest {
         assertThat(uses.getResolvableStatus(),
                 is(ResolvableStatus.RESOLVED));
 
-//        leafIterator = yangNode.getListOfLeaf().listIterator();
-//        leafInfo = leafIterator.next();
-//
-//        // Check whether the information in the leaf is correct under module.
-//        assertThat(leafInfo.getName(), is("treat"));
-//        assertThat(leafInfo.getDataType().getDataTypeName(), is("string"));
-//        assertThat(leafInfo.getDataType().getDataType(), is(YangDataTypes.STRING));
-
-//        // Check whether container is the child of module.
-//        assertThat((grouping.getNextSibling() instanceof YangContainer), is(true));
-//        container = (YangContainer) grouping.getNextSibling();
-//
-//        // Check whether the container name is set correctly which is under module.
-//        assertThat(container.getName(), is("test"));
-//
-//        leafIterator = container.getListOfLeaf().listIterator();
-//        leafInfo = leafIterator.next();
-//
-//        // Check whether the information in the leaf is correct under container which is under module.
-//        assertThat(leafInfo.getName(), is("leaf2"));
-//        assertThat(leafInfo.getDataType().getDataTypeName(), is("string"));
-//        assertThat(leafInfo.getDataType().getDataType(), is(YangDataTypes.STRING));
+        ListIterator<List<YangLeaf>> leafIterator1 = uses.getUsesResolvedLeavesList().listIterator();
+        List<YangLeaf> leafInfo1 = leafIterator1.next();
+        ListIterator<YangLeaf> leafIterator2 = leafInfo1.listIterator();
+        YangLeaf leafInfo2 = leafIterator2.next();
+
+        // Check whether the information in the leaf is correct under module.
+        assertThat(leafInfo2.getName(), is("treat"));
+        assertThat(leafInfo2.getDataType().getDataTypeName(), is("string"));
+        assertThat(leafInfo2.getDataType().getDataType(), is(YangDataTypes.STRING));
+
+        ListIterator<YangNode> usesChildren = uses.getUsesResolvedNodeList().listIterator();
+        YangNode usesChild = usesChildren.next();
+        // Check whether container is the child of module.
+        assertThat((usesChild instanceof YangContainer), is(true));
+        container = (YangContainer) usesChild;
+
+        // Check whether the container name is set correctly which is under module.
+        assertThat(container.getName(), is("test"));
+
+        leafIterator = container.getListOfLeaf().listIterator();
+        leafInfo = leafIterator.next();
+
+        // Check whether the information in the leaf is correct under container which is under module.
+        assertThat(leafInfo.getName(), is("leaf2"));
+        assertThat(leafInfo.getDataType().getDataTypeName(), is("string"));
+        assertThat(leafInfo.getDataType().getDataType(), is(YangDataTypes.STRING));
     }
 
     /**
@@ -241,52 +248,56 @@ public class IntraFileUsesLinkingTest {
         assertThat(uses.getResolvableStatus(),
                 is(ResolvableStatus.RESOLVED));
 
-//        // Check whether list is the sibling of uses which has been deep copied from grouping.
-//        assertThat((yangNode.getChild().getChild().getNextSibling().getChild().getNextSibling() instanceof YangList),
-//                is(true));
-//        YangList yangList = (YangList) yangNode.getChild().getChild().getNextSibling().getChild().getNextSibling();
-//
-//        // Check whether the list name is set correctly.
-//        assertThat(yangList.getName(), is("valid"));
-//
-//        leafIterator = yangList.getListOfLeaf().listIterator();
-//        leafInfo = leafIterator.next();
-//
-//        // Check whether the information in the leaf is correct under list which is deep copied.
-//        assertThat(leafInfo.getName(), is("invalid-interval"));
-//        assertThat(leafInfo.getDataType().getDataTypeName(), is("uint16"));
-//        assertThat(leafInfo.getDataType().getDataType(), is(YangDataTypes.UINT16));
-//        assertThat(leafInfo.getUnits(), is("\"seconds\""));
-//        assertThat(leafInfo.getReference(), is("\"RFC 6020\""));
-//
-//        // Check whether uses is output's child.
-//        assertThat((yangNode.getChild().getChild().getNextSibling().getNextSibling().getChild() instanceof YangUses),
-//                is(true));
-//        YangUses usesInOuput = (YangUses) yangNode.getChild().getChild().getNextSibling().getNextSibling().getChild();
-//
-//        // Check whether uses get resolved.
-//        assertThat(usesInOuput.getResolvableStatus(),
-//                is(ResolvableStatus.RESOLVED));
-//
-//        // Check whether list is the sibling of uses which has been deep copied from grouping.
-//        assertThat((yangNode.getChild().getChild().getNextSibling().getChild().getNextSibling() instanceof YangList),
-//                is(true));
-//
-//        YangList yangListInOutput = (YangList) yangNode.getChild().getChild().getNextSibling().getNextSibling()
-//                .getChild().getNextSibling();
-//
-//        // Check whether the list name is set correctly.
-//        assertThat(yangListInOutput.getName(), is("valid"));
-//
-//        leafIterator = yangListInOutput.getListOfLeaf().listIterator();
-//        leafInfo = leafIterator.next();
-//
-//        // Check whether the information in the leaf is correct under list which is deep copied.
-//        assertThat(leafInfo.getName(), is("invalid-interval"));
-//        assertThat(leafInfo.getDataType().getDataTypeName(), is("uint16"));
-//        assertThat(leafInfo.getDataType().getDataType(), is(YangDataTypes.UINT16));
-//        assertThat(leafInfo.getUnits(), is("\"seconds\""));
-//        assertThat(leafInfo.getReference(), is("\"RFC 6020\""));
+        ListIterator<YangNode> usesChildren = uses.getUsesResolvedNodeList().listIterator();
+        YangNode usesChild = usesChildren.next();
+
+        // Check whether list is the sibling of uses which has been deep copied from grouping.
+        assertThat((usesChild instanceof YangList), is(true));
+
+        YangList yangList = (YangList) usesChild;
+
+        // Check whether the list name is set correctly.
+        assertThat(yangList.getName(), is("valid"));
+
+        leafIterator = yangList.getListOfLeaf().listIterator();
+        leafInfo = leafIterator.next();
+
+        // Check whether the information in the leaf is correct under list which is deep copied.
+        assertThat(leafInfo.getName(), is("invalid-interval"));
+        assertThat(leafInfo.getDataType().getDataTypeName(), is("uint16"));
+        assertThat(leafInfo.getDataType().getDataType(), is(YangDataTypes.UINT16));
+        assertThat(leafInfo.getUnits(), is("\"seconds\""));
+        assertThat(leafInfo.getReference(), is("\"RFC 6020\""));
+
+        // Check whether uses is output's child.
+        assertThat((yangNode.getChild().getChild().getNextSibling().getNextSibling().getChild() instanceof YangUses),
+                is(true));
+        YangUses usesInOuput = (YangUses) yangNode.getChild().getChild().getNextSibling().getNextSibling().getChild();
+
+        // Check whether uses get resolved.
+        assertThat(usesInOuput.getResolvableStatus(),
+                is(ResolvableStatus.RESOLVED));
+
+        ListIterator<YangNode> usesInOuputChildren = usesInOuput.getUsesResolvedNodeList().listIterator();
+        YangNode usesInOuputChild = usesInOuputChildren.next();
+
+        // Check whether list is the sibling of uses which has been deep copied from grouping.
+        assertThat((usesInOuputChild instanceof YangList), is(true));
+
+        YangList yangListInOutput = (YangList) usesInOuputChild;
+
+        // Check whether the list name is set correctly.
+        assertThat(yangListInOutput.getName(), is("valid"));
+
+        leafIterator = yangListInOutput.getListOfLeaf().listIterator();
+        leafInfo = leafIterator.next();
+
+        // Check whether the information in the leaf is correct under list which is deep copied.
+        assertThat(leafInfo.getName(), is("invalid-interval"));
+        assertThat(leafInfo.getDataType().getDataTypeName(), is("uint16"));
+        assertThat(leafInfo.getDataType().getDataType(), is(YangDataTypes.UINT16));
+        assertThat(leafInfo.getUnits(), is("\"seconds\""));
+        assertThat(leafInfo.getReference(), is("\"RFC 6020\""));
     }
 
     /**
@@ -342,6 +353,24 @@ public class IntraFileUsesLinkingTest {
         assertThat(firstUses.getResolvableStatus(),
                 is(ResolvableStatus.RESOLVED));
 
+        ListIterator<YangNode> firstUsesChildren = firstUses.getUsesResolvedNodeList().listIterator();
+        YangNode firstUsesChild = firstUsesChildren.next();
+
+        // Check whether list is the sibling of uses.
+        assertThat((firstUsesChild instanceof YangList), is(true));
+        YangList yangList = (YangList) firstUsesChild;
+        assertThat(yangList.getName(), is("valid"));
+
+        leafIterator = yangList.getListOfLeaf().listIterator();
+        leafInfo = leafIterator.next();
+
+        // Check whether the information in the leaf is correct under list which has been deep copied from grouping.
+        assertThat(leafInfo.getName(), is("invalid-interval"));
+        assertThat(leafInfo.getDataType().getDataTypeName(), is("uint16"));
+        assertThat(leafInfo.getDataType().getDataType(), is(YangDataTypes.UINT16));
+        assertThat(leafInfo.getUnits(), is("\"seconds\""));
+        assertThat(leafInfo.getReference(), is("\"RFC 6020\""));
+
         // Check whether container is the sibling of uses.
         assertThat((firstUses.getNextSibling() instanceof YangContainer), is(true));
         YangContainer yangContainer = (YangContainer) firstUses.getNextSibling();
@@ -349,14 +378,6 @@ public class IntraFileUsesLinkingTest {
         // Check whether the container name is set correctly.
         assertThat(yangContainer.getName(), is("design"));
 
-//        leafIterator = yangContainer.getListOfLeaf().listIterator();
-//        leafInfo = leafIterator.next();
-//
-//        // Check whether the information in the leaf is correct under design-container.
-//        assertThat(leafInfo.getName(), is("ink"));
-//        assertThat(leafInfo.getDataType().getDataTypeName(), is("int32"));
-//        assertThat(leafInfo.getDataType().getDataType(), is(YangDataTypes.INT32));
-
         // Check whether uses is design-container's child.
         assertThat((yangContainer.getChild() instanceof YangUses), is(true));
         YangUses secondUses = (YangUses) yangContainer.getChild();
@@ -365,6 +386,16 @@ public class IntraFileUsesLinkingTest {
         assertThat(secondUses.getResolvableStatus(),
                 is(ResolvableStatus.RESOLVED));
 
+        ListIterator<List<YangLeaf>> leafIterator1 = secondUses.getUsesResolvedLeavesList().listIterator();
+        List<YangLeaf> leafInfo1 = leafIterator1.next();
+        ListIterator<YangLeaf> leafIterator2 = leafInfo1.listIterator();
+        YangLeaf leafInfo2 = leafIterator2.next();
+
+        // Check whether the information in the leaf is correct under design-container.
+        assertThat(leafInfo2.getName(), is("ink"));
+        assertThat(leafInfo2.getDataType().getDataTypeName(), is("int32"));
+        assertThat(leafInfo2.getDataType().getDataType(), is(YangDataTypes.INT32));
+
         // Check whether container is the sibling of uses.
         assertThat((secondUses.getNextSibling() instanceof YangContainer), is(true));
         YangContainer yangContainer2 = (YangContainer) secondUses.getNextSibling();
@@ -386,85 +417,88 @@ public class IntraFileUsesLinkingTest {
         assertThat(thirdUses.getResolvableStatus(),
                 is(ResolvableStatus.RESOLVED));
 
-//        // Check whether container is the sibling of uses.
-//        assertThat((thirdUses.getNextSibling() instanceof YangContainer), is(true));
-//
-//        YangContainer yangContainer3 = (YangContainer) thirdUses.getNextSibling();
-//        assertThat(yangContainer3.getName(), is("value"));
-//
-//        leafIterator = yangContainer3.getListOfLeaf().listIterator();
-//        leafInfo = leafIterator.next();
-//
-//        // Check whether the information in the leaf is correct under container
-//        // which has been deep copied from grouping.
-//        assertThat(leafInfo.getName(), is("zip-code"));
-//        assertThat(leafInfo.getDataType().getDataTypeName(), is("string"));
-//        assertThat(leafInfo.getDataType().getDataType(), is(YangDataTypes.STRING));
-//
-//        // Check whether uses is the sibling of container-design.
-//        assertThat((yangContainer.getNextSibling() instanceof YangUses), is(true));
-//        YangUses fourthUses = (YangUses) yangContainer.getNextSibling();
-//
-//        // Check whether uses get resolved.
-//        assertThat(fourthUses.getResolvableStatus(),
-//                is(ResolvableStatus.RESOLVED));
-//
-//        // Check whether uses is the sibling of previous uses.
-//        assertThat((fourthUses.getNextSibling() instanceof YangUses), is(true));
-//        YangUses fifthUses = (YangUses) fourthUses.getNextSibling();
-//
-//        // Check whether uses get resolved.
-//        assertThat(fifthUses.getResolvableStatus(),
-//                is(ResolvableStatus.RESOLVED));
-//
-//        // Check whether list is the sibling of uses.
-//        assertThat((fifthUses.getNextSibling() instanceof YangList), is(true));
-//        YangList yangList = (YangList) fifthUses.getNextSibling();
-//        assertThat(yangList.getName(), is("valid"));
-//
-//        leafIterator = yangList.getListOfLeaf().listIterator();
-//        leafInfo = leafIterator.next();
-//
-//        // Check whether the information in the leaf is correct under list which has been deep copied from grouping.
-//        assertThat(leafInfo.getName(), is("invalid-interval"));
-//        assertThat(leafInfo.getDataType().getDataTypeName(), is("uint16"));
-//        assertThat(leafInfo.getDataType().getDataType(), is(YangDataTypes.UINT16));
-//        assertThat(leafInfo.getUnits(), is("\"seconds\""));
-//        assertThat(leafInfo.getReference(), is("\"RFC 6020\""));
-//
-//        // Check whether typedef is the sibling of list.
-//        assertThat((yangList.getNextSibling() instanceof YangTypeDef), is(true));
-//        YangTypeDef yangTypeDef = (YangTypeDef) yangList.getNextSibling();
-//        assertThat(yangTypeDef.getName(), is("my-type"));
-//
-//        leafIterator = grouping.getListOfLeaf().listIterator();
-//        leafInfo = leafIterator.next();
-//
-//        // Check whether the information in the leaf is correct under grouping.
-//        assertThat(leafInfo.getName(), is("zip-code"));
-//        assertThat(leafInfo.getDataType().getDataTypeName(), is("string"));
-//        assertThat(leafInfo.getDataType().getDataType(), is(YangDataTypes.STRING));
-//
-//        // Check whether uses is endpoint-grouping's sibling.
-//        assertThat((grouping.getNextSibling() instanceof YangUses), is(true));
-//        YangUses endpointUses = (YangUses) grouping.getNextSibling();
-//
-//        // Check whether uses get resolved.
-//        assertThat(endpointUses.getResolvableStatus(),
-//                is(ResolvableStatus.RESOLVED));
-//
-//        assertThat((endpointUses.getNextSibling().getNextSibling().getNextSibling().getNextSibling().getNextSibling()
-//                .getNextSibling() instanceof YangUses), is(true));
-//
-//        YangUses yangUsesInEndpoint = (YangUses) endpointUses.getNextSibling().getNextSibling().getNextSibling()
-//                .getNextSibling().getNextSibling().getNextSibling();
-//        assertThat(yangUsesInEndpoint.getResolvableStatus(),
-//                is(ResolvableStatus.RESOLVED));
-//
-//        assertThat((yangUsesInEndpoint.getNextSibling() instanceof YangContainer), is(true));
-//        YangContainer yangContainerInEndPoint = (YangContainer) yangUsesInEndpoint.getNextSibling();
-//
-//        assertThat(yangContainerInEndPoint.getName(), is("design"));
+        ListIterator<YangNode> thirdUsesChildren = thirdUses.getUsesResolvedNodeList().listIterator();
+        YangNode thirdUsesChild = thirdUsesChildren.next();
+
+        // Check whether container is the child of uses.
+        assertThat((thirdUsesChild instanceof YangContainer), is(true));
+
+        YangContainer yangContainer3 = (YangContainer) thirdUsesChild;
+        assertThat(yangContainer3.getName(), is("value"));
+
+        leafIterator = yangContainer3.getListOfLeaf().listIterator();
+        leafInfo = leafIterator.next();
+
+        // Check whether the information in the leaf is correct under container
+        // which has been deep copied from grouping.
+        assertThat(leafInfo.getName(), is("zip-code"));
+        assertThat(leafInfo.getDataType().getDataTypeName(), is("string"));
+        assertThat(leafInfo.getDataType().getDataType(), is(YangDataTypes.STRING));
+
+
+        // Check whether uses is the sibling of container-design.
+        assertThat((yangContainer.getNextSibling() instanceof YangUses), is(true));
+        YangUses fourthUses = (YangUses) yangContainer.getNextSibling();
+        assertThat(fourthUses.getName(), is("fourth"));
+        // Check whether uses get resolved.
+        assertThat(fourthUses.getResolvableStatus(),
+                is(ResolvableStatus.RESOLVED));
+
+        ListIterator<List<YangLeaf>> fourthUsesChildren = fourthUses.getUsesResolvedLeavesList().listIterator();
+        List<YangLeaf> fourthUsesChild = fourthUsesChildren.next();
+        ListIterator<YangLeaf> fourthUsesChildren1 = fourthUsesChild.listIterator();
+        YangLeaf fourthUsesChild1 = fourthUsesChildren1.next();
+
+        // Check whether the information in the leaf is correct under correct-container.
+        assertThat(fourthUsesChild1.getName(), is("correct"));
+        assertThat(fourthUsesChild1.getDataType().getDataTypeName(), is("my-type"));
+        assertThat(fourthUsesChild1.getDataType().getDataType(), is(YangDataTypes.DERIVED));
+
+        // Check whether uses is the sibling of previous uses.
+        assertThat((fourthUses.getNextSibling() instanceof YangUses), is(true));
+        YangUses fifthUses = (YangUses) fourthUses.getNextSibling();
+        assertThat(fifthUses.getName(), is("fifth"));
+
+        // Check whether uses get resolved.
+        assertThat(fifthUses.getResolvableStatus(),
+                is(ResolvableStatus.RESOLVED));
+
+        ListIterator<List<YangLeaf>> fifthUsesChildren = fifthUses.getUsesResolvedLeavesList().listIterator();
+        List<YangLeaf> fifthUsesChild = fifthUsesChildren.next();
+        ListIterator<YangLeaf> fifthUsesChildren1 = fifthUsesChild.listIterator();
+        YangLeaf fifthUsesChild1 = fifthUsesChildren1.next();
+
+        //Check whether the information in the leaf is correct under correct-container.
+        assertThat(fifthUsesChild1.getName(), is("abc"));
+        assertThat(fifthUsesChild1.getDataType().getDataTypeName(), is("string"));
+        assertThat(fifthUsesChild1.getDataType().getDataType(), is(YangDataTypes.STRING));
+
+        //Check whether uses is endpoint-grouping's sibling.
+        assertThat((grouping.getNextSibling() instanceof YangUses), is(true));
+        YangUses endpointUses = (YangUses) grouping.getNextSibling();
+
+        // Check whether uses get resolved.
+        assertThat(endpointUses.getResolvableStatus(),
+                is(ResolvableStatus.RESOLVED));
+        assertThat(endpointUses.getName(), is("endpoint"));
+
+        ListIterator<YangNode> endpointUsesUsesChildren = endpointUses.getUsesResolvedNodeList().listIterator();
+        YangNode endpointUsesUsesChild = endpointUsesUsesChildren.next();
+
+        // Check whether list is the sibling of uses.
+        assertThat((endpointUsesUsesChild instanceof YangList), is(true));
+        YangList yangList1 = (YangList) firstUsesChild;
+        assertThat(yangList1.getName(), is("valid"));
+
+        leafIterator = yangList1.getListOfLeaf().listIterator();
+        leafInfo = leafIterator.next();
+
+        // Check whether the information in the leaf is correct under list which has been deep copied from grouping.
+        assertThat(leafInfo.getName(), is("invalid-interval"));
+        assertThat(leafInfo.getDataType().getDataTypeName(), is("uint16"));
+        assertThat(leafInfo.getDataType().getDataType(), is(YangDataTypes.UINT16));
+        assertThat(leafInfo.getUnits(), is("\"seconds\""));
+        assertThat(leafInfo.getReference(), is("\"RFC 6020\""));
     }
 
     /**

@@ -26,8 +26,10 @@ import org.onosproject.yangutils.datamodel.YangNode;
 import org.onosproject.yangutils.datamodel.YangType;
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
 import org.onosproject.yangutils.translator.tojava.JavaFileInfo;
+import org.onosproject.yangutils.translator.tojava.javamodel.AttributesJavaDataType;
 import org.onosproject.yangutils.translator.tojava.javamodel.YangJavaModule;
 import org.onosproject.yangutils.translator.tojava.javamodel.YangJavaTypeDef;
+import org.onosproject.yangutils.utils.io.impl.YangToJavaNamingConflictUtil;
 
 import static org.hamcrest.core.Is.is;
 import static org.hamcrest.core.IsNot.not;
@@ -37,9 +39,9 @@ import static org.onosproject.yangutils.datamodel.YangDataTypes.DERIVED;
 import static org.onosproject.yangutils.datamodel.YangDataTypes.INT32;
 import static org.onosproject.yangutils.datamodel.YangDataTypes.STRING;
 import static org.onosproject.yangutils.datamodel.YangDataTypes.UINT8;
-import static org.onosproject.yangutils.translator.tojava.utils.AttributesJavaDataType.getJavaDataType;
-import static org.onosproject.yangutils.translator.tojava.utils.AttributesJavaDataType.getJavaImportClass;
-import static org.onosproject.yangutils.translator.tojava.utils.AttributesJavaDataType.getJavaImportPackage;
+import static org.onosproject.yangutils.translator.tojava.javamodel.AttributesJavaDataType.getJavaDataType;
+import static org.onosproject.yangutils.translator.tojava.javamodel.AttributesJavaDataType.getJavaImportClass;
+import static org.onosproject.yangutils.translator.tojava.javamodel.AttributesJavaDataType.getJavaImportPackage;
 import static org.onosproject.yangutils.utils.UtilConstants.JAVA_LANG;
 
 /**

@@ -22,6 +22,7 @@ import org.junit.Test;
 import org.onosproject.yangutils.datamodel.YangNode;
 import org.onosproject.yangutils.parser.exceptions.ParserException;
 import org.onosproject.yangutils.parser.impl.YangUtilsParserManager;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 import static org.onosproject.yangutils.translator.tojava.JavaCodeGeneratorUtil.generateJavaCode;
 import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.deleteDirectory;

@@ -22,6 +22,7 @@ import org.junit.Test;
 import org.onosproject.yangutils.datamodel.YangNode;
 import org.onosproject.yangutils.parser.exceptions.ParserException;
 import org.onosproject.yangutils.parser.impl.YangUtilsParserManager;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 import static org.onosproject.yangutils.translator.tojava.JavaCodeGeneratorUtil.generateJavaCode;
 import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.deleteDirectory;

@@ -23,16 +23,17 @@ import org.junit.Rule;
 import org.junit.Test;
 import org.junit.rules.ExpectedException;
 import org.onosproject.yangutils.translator.exception.TranslatorException;
+import org.onosproject.yangutils.utils.io.impl.YangToJavaNamingConflictUtil;
 
 import static org.hamcrest.core.Is.is;
 import static org.hamcrest.core.IsNot.not;
 import static org.junit.Assert.assertThat;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCamelCase;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCapitalCase;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getJavaPackageFromPackagePath;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getPackageDirPathFromJavaJPackage;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCamelCase;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCapitalCase;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getJavaPackageFromPackagePath;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getPackageDirPathFromJavaJPackage;
 import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getRootPackage;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getSmallCase;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getSmallCase;
 import static org.onosproject.yangutils.utils.UtilConstants.DEFAULT_BASE_PKG;
 import static org.onosproject.yangutils.utils.UtilConstants.PERIOD;
 

@@ -23,13 +23,14 @@ import org.junit.Test;
 import org.onosproject.yangutils.datamodel.YangType;
 import org.onosproject.yangutils.translator.tojava.JavaAttributeInfo;
 import org.onosproject.yangutils.translator.tojava.JavaQualifiedTypeInfo;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 import static org.hamcrest.core.Is.is;
 import static org.hamcrest.core.IsNot.not;
 import static org.junit.Assert.assertThat;
 import static org.onosproject.yangutils.datamodel.YangDataTypes.STRING;
 import static org.onosproject.yangutils.translator.tojava.GeneratedJavaFileType.GENERATE_SERVICE_AND_MANAGER;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getCapitalCase;
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.getCapitalCase;
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getBuild;
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getBuildForInterface;
 import static org.onosproject.yangutils.translator.tojava.utils.MethodsGenerator.getCheckNotNull;

@@ -22,6 +22,7 @@ import org.junit.Test;
 import org.onosproject.yangutils.datamodel.YangNode;
 import org.onosproject.yangutils.parser.exceptions.ParserException;
 import org.onosproject.yangutils.parser.impl.YangUtilsParserManager;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 import static org.onosproject.yangutils.translator.tojava.JavaCodeGeneratorUtil.generateJavaCode;
 import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.deleteDirectory;

@@ -22,6 +22,7 @@ import org.junit.Test;
 import org.onosproject.yangutils.datamodel.YangNode;
 import org.onosproject.yangutils.parser.exceptions.ParserException;
 import org.onosproject.yangutils.parser.impl.YangUtilsParserManager;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 import static org.onosproject.yangutils.translator.tojava.JavaCodeGeneratorUtil.generateJavaCode;
 import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.deleteDirectory;

@@ -22,6 +22,7 @@ import org.junit.Test;
 import org.onosproject.yangutils.datamodel.YangNode;
 import org.onosproject.yangutils.parser.exceptions.ParserException;
 import org.onosproject.yangutils.parser.impl.YangUtilsParserManager;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
 
 import static org.onosproject.yangutils.translator.tojava.JavaCodeGeneratorUtil.generateJavaCode;
 import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.deleteDirectory;

@@ -25,7 +25,6 @@ import org.junit.Test;
 import org.onosproject.yangutils.datamodel.YangNode;
 import org.onosproject.yangutils.translator.tojava.JavaFileInfo;
 import org.onosproject.yangutils.translator.tojava.javamodel.YangJavaModule;
-import org.onosproject.yangutils.translator.tojava.utils.YangPluginConfig;
 
 import static org.apache.commons.io.FileUtils.deleteDirectory;
 import static org.hamcrest.core.Is.is;
@@ -34,8 +33,8 @@ import static org.junit.Assert.assertThat;
 import static org.onosproject.yangutils.utils.UtilConstants.PERIOD;
 import static org.onosproject.yangutils.utils.UtilConstants.SLASH;
 import static org.onosproject.yangutils.utils.io.impl.FileSystemUtil.appendFileContents;
-import static org.onosproject.yangutils.utils.io.impl.FileSystemUtil.createPackage;
-import static org.onosproject.yangutils.utils.io.impl.FileSystemUtil.doesPackageExist;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.createPackage;
+import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.doesPackageExist;
 import static org.onosproject.yangutils.utils.io.impl.FileSystemUtil.updateFileHandle;
 
 /**

@@ -22,7 +22,6 @@ import java.lang.reflect.InvocationTargetException;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.rules.ExpectedException;
-import org.onosproject.yangutils.translator.tojava.utils.YangPluginConfig;
 
 import static org.hamcrest.core.Is.is;
 import static org.hamcrest.core.IsNot.not;

@@ -26,17 +26,15 @@ import org.apache.maven.project.MavenProject;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.rules.ExpectedException;
-import org.onosproject.yangutils.translator.tojava.utils.YangPluginConfig;
 import org.onosproject.yangutils.utils.UtilConstants;
 import org.sonatype.plexus.build.incremental.BuildContext;
 import org.sonatype.plexus.build.incremental.DefaultBuildContext;
 
-import static org.apache.commons.io.FileUtils.deleteDirectory;
 import static org.hamcrest.core.Is.is;
 import static org.hamcrest.core.IsNot.not;
 import static org.junit.Assert.assertThat;
 import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.addPackageInfo;
-import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.addToCompilationRoot;
+import static org.onosproject.yangutils.plugin.manager.YangPluginUtils.addToCompilationRoot;
 import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.deleteDirectory;
 import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.createDirectories;
 import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.trimAtLast;