[ONOS-4350] Inter Jar dependency implementation and code restructuring.

Change-Id: Iacac75e4187aed93ce1754c170a9c19707e5b8c3

+<!--
+  ~ 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.
+  -->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <parent>
+        <groupId>org.onosproject</groupId>
+        <artifactId>onos-yangutils</artifactId>
+        <version>1.7.0-SNAPSHOT</version>
+        <relativePath>../pom.xml</relativePath>
+    </parent>
+
+    <artifactId>yangutils-datamodel</artifactId>
+    <version>1.7.0-SNAPSHOT</version>
+    <name>onos-yang-utils-datamodel</name>
+    <packaging>jar</packaging>
+
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+</project>

@@ -17,7 +17,7 @@
 package org.onosproject.yangutils.datamodel;
 
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.utils.YangConstructType;
+import org.onosproject.yangutils.datamodel.utils.YangConstructType;
 
 /**
  * Abstraction of YANG collision function. Abstracted to unify the collision

@@ -14,9 +14,10 @@
  * limitations under the License.
  */
 
-package org.onosproject.yangutils.linker;
+package org.onosproject.yangutils.datamodel;
 
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
+import org.onosproject.yangutils.datamodel.utils.ResolvableStatus;
 
 /**
  * Abstraction of YANG resolvable information. Abstracted to obtain the

@@ -19,8 +19,8 @@ import java.util.LinkedList;
 import java.util.List;
 
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.parser.Parsable;
-import org.onosproject.yangutils.utils.YangConstructType;
+import org.onosproject.yangutils.datamodel.utils.Parsable;
+import org.onosproject.yangutils.datamodel.utils.YangConstructType;
 
 import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.detectCollidingChildUtil;
 
@@ -83,6 +83,8 @@ public class YangAugment
         extends YangNode
         implements YangLeavesHolder, YangCommonInfo, Parsable, CollisionDetector {
 
+    private static final long serialVersionUID = 806201602L;
+
     /**
      * Augment target node.
      */
@@ -140,7 +142,7 @@ public class YangAugment
      * @param nodeIdentifiers the augmented node
      */
     public void setTargetNode(List<YangNodeIdentifier> nodeIdentifiers) {
-        this.targetNode = nodeIdentifiers;
+        targetNode = nodeIdentifiers;
     }
 
     /**
@@ -173,9 +175,9 @@ public class YangAugment
     @Override
     public void detectSelfCollision(String identifierName, YangConstructType dataType)
             throws DataModelException {
-        if (this.getName().equals(identifierName)) {
+        if (getName().equals(identifierName)) {
             throw new DataModelException("YANG file error: Duplicate input identifier detected, same as input \""
-                    + this.getName() + "\"");
+                    + getName() + "\"");
         }
     }
 

@@ -15,10 +15,12 @@
  */
 package org.onosproject.yangutils.datamodel;
 
+import java.io.Serializable;
 import java.util.Set;
+
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.parser.Parsable;
-import org.onosproject.yangutils.utils.YangConstructType;
+import org.onosproject.yangutils.datamodel.utils.Parsable;
+import org.onosproject.yangutils.datamodel.utils.YangConstructType;
 
 import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.findReferredNode;
 
@@ -49,7 +51,9 @@ import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.findRefer
 /**
  * Represents the belongs-to data type information.
  */
-public class YangBelongsTo implements Parsable, LocationInfo {
+public class YangBelongsTo implements Parsable, LocationInfo, Serializable {
+
+    private static final long serialVersionUID = 806201639L;
 
     /**
      * Reference RFC 6020.
@@ -74,10 +78,10 @@ public class YangBelongsTo implements Parsable, LocationInfo {
     private String prefix;
 
     // Error Line number.
-    private int lineNumber;
+    private transient int lineNumber;
 
     // Error character position.
-    private int charPosition;
+    private transient int charPosition;
 
     /**
      * Create a belongs to object.
@@ -187,7 +191,7 @@ public class YangBelongsTo implements Parsable, LocationInfo {
 
     @Override
     public void setCharPosition(int charPositionInLine) {
-        this.charPosition = charPositionInLine;
+        charPosition = charPositionInLine;
     }
 
     /**

@@ -16,11 +16,12 @@
 
 package org.onosproject.yangutils.datamodel;
 
+import java.io.Serializable;
 import java.util.Objects;
 
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.parser.Parsable;
-import org.onosproject.yangutils.utils.YangConstructType;
+import org.onosproject.yangutils.datamodel.utils.Parsable;
+import org.onosproject.yangutils.datamodel.utils.YangConstructType;
 
 /*-
  *  The "bit" statement, which is a sub-statement to the "type" statement,
@@ -46,7 +47,9 @@ import org.onosproject.yangutils.utils.YangConstructType;
 /**
  * Represents the bit data type information.
  */
-public class YangBit implements YangCommonInfo, Parsable {
+public class YangBit implements YangCommonInfo, Parsable, Serializable {
+
+    private static final long serialVersionUID = 806201640L;
 
     /**
      * Name of the bit.
@@ -194,14 +197,14 @@ public class YangBit implements YangCommonInfo, Parsable {
         }
         if (obj instanceof YangBit) {
             final YangBit other = (YangBit) obj;
-            return Objects.equals(this.bitName, other.bitName);
+            return Objects.equals(bitName, other.bitName);
         }
         return false;
     }
 
     @Override
     public int hashCode() {
-        return Objects.hashCode(this.bitName);
+        return Objects.hashCode(bitName);
     }
 
     /**

@@ -16,12 +16,13 @@
 
 package org.onosproject.yangutils.datamodel;
 
+import java.io.Serializable;
 import java.util.HashSet;
 import java.util.Set;
 
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.parser.Parsable;
-import org.onosproject.yangutils.utils.YangConstructType;
+import org.onosproject.yangutils.datamodel.utils.Parsable;
+import org.onosproject.yangutils.datamodel.utils.YangConstructType;
 
 /*
  * Reference RFC 6020.
@@ -34,7 +35,9 @@ import org.onosproject.yangutils.utils.YangConstructType;
 /**
  * Represents the bits data type information.
  */
-public class YangBits implements Parsable {
+public class YangBits implements Parsable, Serializable {
+
+    private static final long serialVersionUID = 806201641L;
 
     // Bits information set.
     private Set<YangBit> bitSet;

@@ -19,11 +19,11 @@ import java.util.LinkedList;
 import java.util.List;
 
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.parser.Parsable;
-import org.onosproject.yangutils.utils.YangConstructType;
+import org.onosproject.yangutils.datamodel.utils.Parsable;
+import org.onosproject.yangutils.datamodel.utils.YangConstructType;
 
 import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.detectCollidingChildUtil;
-import static org.onosproject.yangutils.utils.YangConstructType.CASE_DATA;
+import static org.onosproject.yangutils.datamodel.utils.YangConstructType.CASE_DATA;
 
 /*-
  * Reference RFC 6020.
@@ -96,6 +96,8 @@ public class YangCase
         extends YangNode
         implements YangLeavesHolder, YangCommonInfo, Parsable, CollisionDetector, YangAugmentationHolder {
 
+    private static final long serialVersionUID = 806201603L;
+
     /**
      * Case name.
      */

@@ -16,10 +16,10 @@
 package org.onosproject.yangutils.datamodel;
 
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.parser.Parsable;
-import org.onosproject.yangutils.utils.YangConstructType;
+import org.onosproject.yangutils.datamodel.utils.Parsable;
+import org.onosproject.yangutils.datamodel.utils.YangConstructType;
 
-import static org.onosproject.yangutils.utils.YangConstructType.CHOICE_DATA;
+import static org.onosproject.yangutils.datamodel.utils.YangConstructType.CHOICE_DATA;
 
 /*-
  * Reference RFC 6020.
@@ -62,6 +62,8 @@ import static org.onosproject.yangutils.utils.YangConstructType.CHOICE_DATA;
 public class YangChoice extends YangNode
         implements YangCommonInfo, Parsable, CollisionDetector, YangAugmentationHolder {
 
+    private static final long serialVersionUID = 806201604L;
+
     /**
      * Name of choice.
      */
@@ -332,7 +334,7 @@ public class YangChoice extends YangNode
     @Override
     public void detectCollidingChild(String identifierName, YangConstructType dataType) throws DataModelException {
 
-        if (this.getParent() instanceof YangCase && dataType != YangConstructType.CASE_DATA) {
+        if (getParent() instanceof YangCase && dataType != YangConstructType.CASE_DATA) {
             ((CollisionDetector) getParent()).detectCollidingChild(identifierName, dataType);
         }
         YangNode node = getChild();

@@ -20,8 +20,8 @@ import java.util.LinkedList;
 import java.util.List;
 
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.parser.Parsable;
-import org.onosproject.yangutils.utils.YangConstructType;
+import org.onosproject.yangutils.datamodel.utils.Parsable;
+import org.onosproject.yangutils.datamodel.utils.YangConstructType;
 
 import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.detectCollidingChildUtil;
 
@@ -91,6 +91,8 @@ public class YangContainer
         extends YangNode
         implements YangLeavesHolder, YangCommonInfo, Parsable, CollisionDetector, YangAugmentationHolder {
 
+    private static final long serialVersionUID = 806201605L;
+
     /**
      * Name of the container.
      */

@@ -16,11 +16,12 @@
 
 package org.onosproject.yangutils.datamodel;
 
+import java.io.Serializable;
 import java.util.Objects;
 
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.parser.Parsable;
-import org.onosproject.yangutils.utils.YangConstructType;
+import org.onosproject.yangutils.datamodel.utils.Parsable;
+import org.onosproject.yangutils.datamodel.utils.YangConstructType;
 
 /*-
  * The "ENUM" statement, which is a sub-statement to the "type"
@@ -50,7 +51,9 @@ import org.onosproject.yangutils.utils.YangConstructType;
 /**
  * Represents the ENUM data type information.
  */
-public class YangEnum implements YangCommonInfo, Parsable, Comparable<YangEnum> {
+public class YangEnum implements YangCommonInfo, Parsable, Comparable<YangEnum>, Serializable {
+
+    private static final long serialVersionUID = 806201643L;
 
     /**
      * Named value for the ENUM.
@@ -197,14 +200,14 @@ public class YangEnum implements YangCommonInfo, Parsable, Comparable<YangEnum>
         }
         if (obj instanceof YangEnum) {
             final YangEnum other = (YangEnum) obj;
-            return Objects.equals(this.namedValue, other.namedValue);
+            return Objects.equals(namedValue, other.namedValue);
         }
         return false;
     }
 
     @Override
     public int hashCode() {
-        return Objects.hashCode(this.namedValue);
+        return Objects.hashCode(namedValue);
     }
 
     /**
@@ -229,9 +232,9 @@ public class YangEnum implements YangCommonInfo, Parsable, Comparable<YangEnum>
 
     @Override
     public int compareTo(YangEnum otherEnum) {
-        if (this.namedValue.equals(otherEnum.getNamedValue())) {
+        if (namedValue.equals(otherEnum.getNamedValue())) {
             return 0;
         }
-        return new Integer(this.value).compareTo(otherEnum.getValue());
+        return new Integer(value).compareTo(otherEnum.getValue());
     }
 }

@@ -20,8 +20,8 @@ import java.util.SortedSet;
 import java.util.TreeSet;
 
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.parser.Parsable;
-import org.onosproject.yangutils.utils.YangConstructType;
+import org.onosproject.yangutils.datamodel.utils.Parsable;
+import org.onosproject.yangutils.datamodel.utils.YangConstructType;
 
 /*
  * The enumeration built-in type represents values from a set of
@@ -35,6 +35,8 @@ public class YangEnumeration
         extends YangNode
         implements Parsable, CollisionDetector {
 
+    private static final long serialVersionUID = 806201606L;
+
     // Enumeration info set.
     private SortedSet<YangEnum> enumSet;
 

@@ -19,8 +19,8 @@ import java.util.LinkedList;
 import java.util.List;
 
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.parser.Parsable;
-import org.onosproject.yangutils.utils.YangConstructType;
+import org.onosproject.yangutils.datamodel.utils.Parsable;
+import org.onosproject.yangutils.datamodel.utils.YangConstructType;
 
 import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.detectCollidingChildUtil;
 
@@ -81,6 +81,8 @@ public class YangGrouping
         extends YangNode
         implements YangLeavesHolder, YangCommonInfo, Parsable, CollisionDetector {
 
+    private static final long serialVersionUID = 806201607L;
+
     /**
      * Name of the grouping.
      */

@@ -15,10 +15,12 @@
  */
 package org.onosproject.yangutils.datamodel;
 
+import java.io.Serializable;
 import java.util.Set;
+
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.parser.Parsable;
-import org.onosproject.yangutils.utils.YangConstructType;
+import org.onosproject.yangutils.datamodel.utils.Parsable;
+import org.onosproject.yangutils.datamodel.utils.YangConstructType;
 
 import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.findReferredNode;
 
@@ -67,7 +69,9 @@ import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.findRefer
  * Represents the information about the imported modules.
  */
 public class YangImport
-        implements Parsable, LocationInfo {
+        implements Parsable, LocationInfo, Serializable {
+
+    private static final long serialVersionUID = 806201642L;
 
     /**
      * Name of the module that is being imported.
@@ -95,10 +99,10 @@ public class YangImport
     private YangNode importedNode;
 
     // Error Line number.
-    private int lineNumber;
+    private transient int lineNumber;
 
     // Error character position.
-    private int charPosition;
+    private transient int charPosition;
 
     /**
      * Creates a YANG import.
@@ -230,7 +234,7 @@ public class YangImport
 
     @Override
     public void setCharPosition(int charPositionInLine) {
-        this.charPosition = charPositionInLine;
+        charPosition = charPositionInLine;
     }
 
     /**
@@ -244,8 +248,8 @@ public class YangImport
         String importedModuleRevision = getRevision();
         YangNode moduleNode = null;
         /*
-         * Find the imported module node for a given module name
-         * with a specified revision if revision is not null.
+         * Find the imported module node for a given module name with a
+         * specified revision if revision is not null.
          */
         if (importedModuleRevision != null) {
             String importedModuleNameWithRevision = importedModuleName + "@" + importedModuleRevision;
@@ -253,8 +257,8 @@ public class YangImport
         }
 
         /*
-         * Find the imported module node for a given module name
-         * without revision if can't find with revision.
+         * Find the imported module node for a given module name without
+         * revision if can't find with revision.
          */
         if (moduleNode == null) {
             moduleNode = findReferredNode(yangNodeSet, importedModuleName);

@@ -15,10 +15,12 @@
  */
 package org.onosproject.yangutils.datamodel;
 
+import java.io.Serializable;
 import java.util.Set;
+
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.parser.Parsable;
-import org.onosproject.yangutils.utils.YangConstructType;
+import org.onosproject.yangutils.datamodel.utils.Parsable;
+import org.onosproject.yangutils.datamodel.utils.YangConstructType;
 
 import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.findReferredNode;
 
@@ -41,7 +43,9 @@ import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.findRefer
  * Represents the information about the included sub-modules.
  */
 public class YangInclude
-        implements Parsable, LocationInfo {
+        implements Parsable, LocationInfo, Serializable {
+
+    private static final long serialVersionUID = 806201644L;
 
     /**
      * Name of the sub-module that is being included.
@@ -60,10 +64,10 @@ public class YangInclude
     private YangNode includedNode;
 
     // Error Line number.
-    private int lineNumber;
+    private transient int lineNumber;
 
     // Error character position.
-    private int charPosition;
+    private transient int charPosition;
 
     /**
      * Creates a YANG include.
@@ -166,7 +170,7 @@ public class YangInclude
 
     @Override
     public void setCharPosition(int charPositionInLine) {
-        this.charPosition = charPositionInLine;
+        charPosition = charPositionInLine;
     }
 
     /**
@@ -182,8 +186,8 @@ public class YangInclude
         YangNode subModuleNode = null;
 
         /*
-         * Find the included sub-module node for a given module name
-         * with a specified revision if revision is not null.
+         * Find the included sub-module node for a given module name with a
+         * specified revision if revision is not null.
          */
         if (includedSubModuleRevision != null) {
             String includedSubModuleNameWithRevision = includedSubModuleName + "@" + includedSubModuleRevision;
@@ -191,8 +195,8 @@ public class YangInclude
         }
 
         /*
-         * Find the imported sub module node for a given module name
-         * without revision if can't find with revision.
+         * Find the imported sub module node for a given module name without
+         * revision if can't find with revision.
          */
         if (subModuleNode == null) {
             subModuleNode = findReferredNode(yangNodeSet, includedSubModuleName);

@@ -20,8 +20,8 @@ import java.util.LinkedList;
 import java.util.List;
 
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.parser.Parsable;
-import org.onosproject.yangutils.utils.YangConstructType;
+import org.onosproject.yangutils.datamodel.utils.Parsable;
+import org.onosproject.yangutils.datamodel.utils.YangConstructType;
 
 import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.detectCollidingChildUtil;
 
@@ -72,6 +72,8 @@ public class YangInput
         extends YangNode
         implements YangLeavesHolder, Parsable, CollisionDetector, YangAugmentationHolder {
 
+    private static final long serialVersionUID = 806201608L;
+
     /**
      * Name of the input.
      */
@@ -106,9 +108,9 @@ public class YangInput
     @Override
     public void detectSelfCollision(String identifierName, YangConstructType dataType)
             throws DataModelException {
-        if (this.getName().equals(identifierName)) {
+        if (getName().equals(identifierName)) {
             throw new DataModelException("YANG file error: Duplicate input identifier detected, same as input \""
-                    + this.getName() + "\"");
+                    + getName() + "\"");
         }
     }
 

@@ -16,9 +16,11 @@
 
 package org.onosproject.yangutils.datamodel;
 
+import java.io.Serializable;
+
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.parser.Parsable;
-import org.onosproject.yangutils.utils.YangConstructType;
+import org.onosproject.yangutils.datamodel.utils.Parsable;
+import org.onosproject.yangutils.datamodel.utils.YangConstructType;
 
 /*
  * Reference:RFC 6020.
@@ -58,7 +60,9 @@ import org.onosproject.yangutils.utils.YangConstructType;
  * Represents leaf data represented in YANG.
  */
 public class YangLeaf
-        implements YangCommonInfo, Parsable, Cloneable {
+        implements YangCommonInfo, Parsable, Cloneable, Serializable {
+
+    private static final long serialVersionUID = 806201635L;
 
     /**
      * Name of leaf.
@@ -109,7 +113,7 @@ public class YangLeaf
     /**
      * YANG Node in which the leaf is contained.
      */
-    YangLeavesHolder containedIn;
+    private transient YangLeavesHolder containedIn;
 
     /**
      * Creates a YANG leaf.

@@ -16,9 +16,11 @@
 
 package org.onosproject.yangutils.datamodel;
 
+import java.io.Serializable;
+
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.parser.Parsable;
-import org.onosproject.yangutils.utils.YangConstructType;
+import org.onosproject.yangutils.datamodel.utils.Parsable;
+import org.onosproject.yangutils.datamodel.utils.YangConstructType;
 
 /*
  *  Reference:RFC 6020.
@@ -54,7 +56,9 @@ import org.onosproject.yangutils.utils.YangConstructType;
  * Represents leaf-list data represented in YANG.
  */
 public class YangLeafList
-        implements YangCommonInfo, Parsable, Cloneable {
+        implements YangCommonInfo, Parsable, Cloneable, Serializable {
+
+    private static final long serialVersionUID = 806201637L;
 
     /**
      * Name of leaf-list.
@@ -126,7 +130,7 @@ public class YangLeafList
     /**
      * YANG Node in which the leaf is contained.
      */
-    YangLeavesHolder containedIn;
+    private transient YangLeavesHolder containedIn;
 
     /**
      * Creates a YANG leaf-list.

@@ -16,6 +16,8 @@
 
 package org.onosproject.yangutils.datamodel;
 
+import java.io.Serializable;
+
 /*-
  * Reference RFC 6020.
  *
@@ -24,14 +26,14 @@ package org.onosproject.yangutils.datamodel;
  */
 
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.parser.Parsable;
-import org.onosproject.yangutils.utils.YangConstructType;
+import org.onosproject.yangutils.datamodel.utils.Parsable;
+import org.onosproject.yangutils.datamodel.utils.YangConstructType;
 import org.onosproject.yangutils.datamodel.utils.builtindatatype.YangUint64;
 
 /**
  * Represents the restriction for length data type.
  */
-public class YangLengthRestriction implements YangDesc, YangReference, YangAppErrorInfo, Parsable {
+public class YangLengthRestriction implements YangDesc, YangReference, YangAppErrorInfo, Parsable, Serializable {
 
     /*-
      * Reference RFC 6020.
@@ -69,6 +71,8 @@ public class YangLengthRestriction implements YangDesc, YangReference, YangAppEr
      *  +---------------+---------+-------------+-----------------+
      */
 
+    private static final long serialVersionUID = 806201645L;
+
     /**
      * Length restriction information.
      */
@@ -207,11 +211,11 @@ public class YangLengthRestriction implements YangDesc, YangReference, YangAppEr
 
     @Override
     public void validateDataOnEntry() throws DataModelException {
-        //TODO: implement the method.
+        // TODO: implement the method.
     }
 
     @Override
     public void validateDataOnExit() throws DataModelException {
-        //TODO: implement the method.
+        // TODO: implement the method.
     }
 }

@@ -20,8 +20,8 @@ import java.util.LinkedList;
 import java.util.List;
 
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.parser.Parsable;
-import org.onosproject.yangutils.utils.YangConstructType;
+import org.onosproject.yangutils.datamodel.utils.Parsable;
+import org.onosproject.yangutils.datamodel.utils.YangConstructType;
 
 import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.detectCollidingChildUtil;
 
@@ -71,6 +71,8 @@ public class YangList
         extends YangNode
         implements YangLeavesHolder, YangCommonInfo, Parsable, CollisionDetector, YangAugmentationHolder {
 
+    private static final long serialVersionUID = 806201609L;
+
     /**
      * Name of the YANG list.
      */
@@ -619,7 +621,7 @@ public class YangList
     }
 
     private boolean isUsesPresentInList() {
-        YangNode node = this.getChild();
+        YangNode node = getChild();
         while (node != null) {
             if (node instanceof YangUses) {
                 return true;
@@ -631,7 +633,7 @@ public class YangList
     }
 
     private boolean isListPresentInGrouping() {
-        YangNode node = this.getParent();
+        YangNode node = getParent();
         while (node != null) {
             if (node instanceof YangGrouping) {
                 return true;

@@ -19,9 +19,10 @@ import java.util.Iterator;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Set;
+
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.parser.Parsable;
-import org.onosproject.yangutils.utils.YangConstructType;
+import org.onosproject.yangutils.datamodel.utils.Parsable;
+import org.onosproject.yangutils.datamodel.utils.YangConstructType;
 
 import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.detectCollidingChildUtil;
 import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.linkInterFileReferences;
@@ -75,6 +76,8 @@ public class YangModule
         implements YangLeavesHolder, YangDesc, YangReference, Parsable, CollisionDetector, YangReferenceResolver,
         RpcNotificationContainer {
 
+    private static final long serialVersionUID = 806201610L;
+
     /**
      * Name of the module.
      */

@@ -15,9 +15,11 @@
  */
 package org.onosproject.yangutils.datamodel;
 
+import java.io.Serializable;
+
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.parser.Parsable;
-import org.onosproject.yangutils.utils.YangConstructType;
+import org.onosproject.yangutils.datamodel.utils.Parsable;
+import org.onosproject.yangutils.datamodel.utils.YangConstructType;
 
 /*-
  * The "must" statement, which is optional, takes as an argument a string that
@@ -46,7 +48,9 @@ import org.onosproject.yangutils.utils.YangConstructType;
 /**
  * Represents information defined in YANG must.
  */
-public class YangMust implements YangDesc, YangReference, Parsable {
+public class YangMust implements YangDesc, YangReference, Parsable, Serializable {
+
+    private static final long serialVersionUID = 806201646L;
 
     /**
      * Constraint info.

@@ -16,9 +16,11 @@
 
 package org.onosproject.yangutils.datamodel;
 
+import java.io.Serializable;
+
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.parser.Parsable;
-import org.onosproject.yangutils.utils.YangConstructType;
+import org.onosproject.yangutils.datamodel.utils.Parsable;
+import org.onosproject.yangutils.datamodel.utils.YangConstructType;
 
 /*
  *  Reference:RFC 6020.
@@ -32,7 +34,9 @@ import org.onosproject.yangutils.utils.YangConstructType;
 /**
  * Represents name space to be used for the XML data tree.
  */
-public class YangNameSpace implements Parsable {
+public class YangNameSpace implements Parsable, Serializable {
+
+    private static final long serialVersionUID = 806201647L;
 
     private String uri;
 

@@ -15,13 +15,17 @@
  */
 package org.onosproject.yangutils.datamodel;
 
+import java.io.Serializable;
+
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
 
 /**
  * Represents base class of a node in data model tree.
  */
 public abstract class YangNode
-        implements Cloneable {
+        implements Cloneable, Serializable {
+
+    private static final long serialVersionUID = 806201601L;
 
     /**
      * Type of node.

@@ -16,10 +16,14 @@
 
 package org.onosproject.yangutils.datamodel;
 
+import java.io.Serializable;
+
 /**
  * Represents YANG node identifier which is a combination of prefix and name.
  */
-public class YangNodeIdentifier {
+public class YangNodeIdentifier implements Serializable {
+
+    private static final long serialVersionUID = 806201648L;
 
     // Name of the node.
     private String name;

@@ -20,8 +20,8 @@ import java.util.LinkedList;
 import java.util.List;
 
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.parser.Parsable;
-import org.onosproject.yangutils.utils.YangConstructType;
+import org.onosproject.yangutils.datamodel.utils.Parsable;
+import org.onosproject.yangutils.datamodel.utils.YangConstructType;
 
 import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.detectCollidingChildUtil;
 
@@ -78,6 +78,8 @@ public class YangNotification
         extends YangNode
         implements YangLeavesHolder, YangCommonInfo, Parsable, CollisionDetector, YangAugmentationHolder {
 
+    private static final long serialVersionUID = 806201611L;
+
     /**
      * Name of the notification.
      */
@@ -127,9 +129,9 @@ public class YangNotification
     @Override
     public void detectSelfCollision(String identifierName, YangConstructType dataType)
             throws DataModelException {
-        if (this.getName().equals(identifierName)) {
+        if (getName().equals(identifierName)) {
             throw new DataModelException("YANG file error: Duplicate input identifier detected, same as notification \""
-                    + this.getName() + "\"");
+                    + getName() + "\"");
         }
     }
 

@@ -20,8 +20,8 @@ import java.util.LinkedList;
 import java.util.List;
 
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.parser.Parsable;
-import org.onosproject.yangutils.utils.YangConstructType;
+import org.onosproject.yangutils.datamodel.utils.Parsable;
+import org.onosproject.yangutils.datamodel.utils.YangConstructType;
 
 import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.detectCollidingChildUtil;
 
@@ -71,6 +71,8 @@ public class YangOutput
         extends YangNode
         implements YangLeavesHolder, Parsable, CollisionDetector, YangAugmentationHolder {
 
+    private static final long serialVersionUID = 806201612L;
+
     /**
      * Name of the output.
      */
@@ -105,9 +107,9 @@ public class YangOutput
     @Override
     public void detectSelfCollision(String identifierName, YangConstructType dataType)
             throws DataModelException {
-        if (this.getName().equals(identifierName)) {
+        if (getName().equals(identifierName)) {
             throw new DataModelException("YANG file error: Duplicate identifier detected, same as output \""
-                    + this.getName() + "\"");
+                    + getName() + "\"");
         }
     }
 

@@ -16,6 +16,7 @@
 
 package org.onosproject.yangutils.datamodel;
 
+import java.io.Serializable;
 import java.util.LinkedList;
 import java.util.List;
 
@@ -51,7 +52,9 @@ import java.util.List;
  * Represents pattern restriction information. The regular expression restriction on string
  * data type.
  */
-public class YangPatternRestriction {
+public class YangPatternRestriction implements Serializable {
+
+    private static final long serialVersionUID = 806201649L;
 
     /**
      * Pattern restriction defined for the current type.

@@ -13,6 +13,8 @@ See the License for the specific language governing permissions and
 limitations under the License.*/
 package org.onosproject.yangutils.datamodel;
 
+import java.io.Serializable;
+
 import org.onosproject.yangutils.datamodel.utils.builtindatatype.YangBuiltInDataTypeInfo;
 
 /**
@@ -20,7 +22,9 @@ import org.onosproject.yangutils.datamodel.utils.builtindatatype.YangBuiltInData
  *
  * @param <T> range type based on the data type
  */
-public class YangRangeInterval<T extends YangBuiltInDataTypeInfo<T>> {
+public class YangRangeInterval<T extends YangBuiltInDataTypeInfo<T>> implements Serializable {
+
+    private static final long serialVersionUID = 806201650L;
 
     /**
      * Starting value of the range interval.

@@ -16,14 +16,17 @@
 
 package org.onosproject.yangutils.datamodel;
 
+import java.io.Serializable;
 import java.util.LinkedList;
 import java.util.List;
+
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.parser.Parsable;
-import org.onosproject.yangutils.utils.YangConstructType;
+import org.onosproject.yangutils.datamodel.utils.Parsable;
+import org.onosproject.yangutils.datamodel.utils.YangConstructType;
 import org.onosproject.yangutils.datamodel.utils.builtindatatype.YangBuiltInDataTypeInfo;
 
 import static org.onosproject.yangutils.datamodel.utils.builtindatatype.BuiltInTypeObjectFactory.getDataObjectFromString;
+
 import static com.google.common.base.Preconditions.checkNotNull;
 
 /*-
@@ -57,7 +60,9 @@ import static com.google.common.base.Preconditions.checkNotNull;
  * @param <T> range type (data type)
  */
 public class YangRangeRestriction<T extends YangBuiltInDataTypeInfo<T>>
-        implements YangDesc, YangReference, YangAppErrorInfo, Parsable {
+        implements YangDesc, YangReference, YangAppErrorInfo, Parsable, Serializable {
+
+    private static final long serialVersionUID = 8062016051L;
 
     /**
      * Ascending list of range interval restriction. If the restriction is a
@@ -186,7 +191,8 @@ public class YangRangeRestriction<T extends YangBuiltInDataTypeInfo<T>>
 
         if (getAscendingRangeIntervals() == null
                 || getAscendingRangeIntervals().isEmpty()) {
-            // Throw exception, At least one default range needs to be set in constructor or in linker.
+            // Throw exception, At least one default range needs to be set in
+            // constructor or in linker.
             throw new DataModelException("Range interval missing in range restriction.");
 
         }
@@ -217,7 +223,8 @@ public class YangRangeRestriction<T extends YangBuiltInDataTypeInfo<T>>
 
         if (getAscendingRangeIntervals() == null
                 || getAscendingRangeIntervals().isEmpty()) {
-            // Throw exception, At least one default range needs to be set in constructor or in linker.
+            // Throw exception, At least one default range needs to be set in
+            // constructor or in linker.
             throw new DataModelException("Range interval missing in range restriction.");
         }
 
@@ -321,11 +328,11 @@ public class YangRangeRestriction<T extends YangBuiltInDataTypeInfo<T>>
 
     @Override
     public void validateDataOnEntry() throws DataModelException {
-        //TODO: implement the method.
+        // TODO: implement the method.
     }
 
     @Override
     public void validateDataOnExit() throws DataModelException {
-        //TODO: implement the method.
+        // TODO: implement the method.
     }
 }

@@ -15,9 +15,11 @@
  */
 package org.onosproject.yangutils.datamodel;
 
+import java.io.Serializable;
+
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.parser.Parsable;
-import org.onosproject.yangutils.utils.YangConstructType;
+import org.onosproject.yangutils.datamodel.utils.Parsable;
+import org.onosproject.yangutils.datamodel.utils.YangConstructType;
 
 /*
  *  Reference:RFC 6020.
@@ -42,7 +44,9 @@ import org.onosproject.yangutils.utils.YangConstructType;
 /**
  * Represents the information about the revision.
  */
-public class YangRevision implements YangDesc, YangReference, Parsable {
+public class YangRevision implements YangDesc, YangReference, Parsable, Serializable {
+
+    private static final long serialVersionUID = 8062016052L;
 
     /**
      * Revision date. Date string in the format "YYYY-MM-DD"

@@ -17,8 +17,8 @@
 package org.onosproject.yangutils.datamodel;
 
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.parser.Parsable;
-import org.onosproject.yangutils.utils.YangConstructType;
+import org.onosproject.yangutils.datamodel.utils.Parsable;
+import org.onosproject.yangutils.datamodel.utils.YangConstructType;
 
 import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.detectCollidingChildUtil;
 
@@ -59,6 +59,8 @@ import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.detectCol
 public class YangRpc extends YangNode implements YangCommonInfo, Parsable,
         CollisionDetector {
 
+    private static final long serialVersionUID = 806201613L;
+
     /**
      * Name of the rpc.
      */

@@ -16,9 +16,11 @@
 
 package org.onosproject.yangutils.datamodel;
 
+import java.io.Serializable;
+
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.parser.Parsable;
-import org.onosproject.yangutils.utils.YangConstructType;
+import org.onosproject.yangutils.datamodel.utils.Parsable;
+import org.onosproject.yangutils.datamodel.utils.YangConstructType;
 import org.onosproject.yangutils.datamodel.utils.builtindatatype.YangUint64;
 
 /*-
@@ -31,7 +33,7 @@ import org.onosproject.yangutils.datamodel.utils.builtindatatype.YangUint64;
 /**
  * Represents the restriction for string data type.
  */
-public class YangStringRestriction implements YangDesc, YangReference, YangAppErrorInfo, Parsable {
+public class YangStringRestriction implements YangDesc, YangReference, YangAppErrorInfo, Parsable, Serializable {
 
     /*-
      * Reference RFC 6020.
@@ -69,6 +71,8 @@ public class YangStringRestriction implements YangDesc, YangReference, YangAppEr
      *  +---------------+---------+-------------+-----------------+
      */
 
+    private static final long serialVersionUID = 8062016053L;
+
     /**
      * Length restriction information.
      */
@@ -242,11 +246,11 @@ public class YangStringRestriction implements YangDesc, YangReference, YangAppEr
 
     @Override
     public void validateDataOnEntry() throws DataModelException {
-        //TODO: implement the method.
+        // TODO: implement the method.
     }
 
     @Override
     public void validateDataOnExit() throws DataModelException {
-        //TODO: implement the method.
+        // TODO: implement the method.
     }
 }

@@ -19,9 +19,10 @@ import java.util.Iterator;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Set;
+
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.parser.Parsable;
-import org.onosproject.yangutils.utils.YangConstructType;
+import org.onosproject.yangutils.datamodel.utils.Parsable;
+import org.onosproject.yangutils.datamodel.utils.YangConstructType;
 
 import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.detectCollidingChildUtil;
 import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.linkInterFileReferences;
@@ -83,6 +84,8 @@ public class YangSubModule
         implements YangLeavesHolder, YangDesc, YangReference, Parsable, CollisionDetector, YangReferenceResolver,
         RpcNotificationContainer {
 
+    private static final long serialVersionUID = 806201614L;
+
     /**
      * Name of sub module.
      */

@@ -16,11 +16,12 @@
 
 package org.onosproject.yangutils.datamodel;
 
+import java.io.Serializable;
+
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.linker.Resolvable;
-import org.onosproject.yangutils.linker.ResolvableStatus;
-import org.onosproject.yangutils.parser.Parsable;
-import org.onosproject.yangutils.utils.YangConstructType;
+import org.onosproject.yangutils.datamodel.utils.Parsable;
+import org.onosproject.yangutils.datamodel.utils.ResolvableStatus;
+import org.onosproject.yangutils.datamodel.utils.YangConstructType;
 
 import static org.onosproject.yangutils.datamodel.YangDataTypes.DERIVED;
 
@@ -54,7 +55,9 @@ import static org.onosproject.yangutils.datamodel.YangDataTypes.DERIVED;
  * @param <T> YANG data type info
  */
 public class YangType<T>
-        implements Parsable, Resolvable {
+        implements Parsable, Resolvable, Serializable {
+
+    private static final long serialVersionUID = 8062016054L;
 
     /**
      * YANG node identifier.
@@ -248,9 +251,9 @@ public class YangType<T>
     @Override
     public void resolve()
             throws DataModelException {
-       /*
-        * Check whether the data type is derived.
-        */
+        /*
+         * Check whether the data type is derived.
+         */
         if (getDataType() != DERIVED) {
             throw new DataModelException("Linker Error: Resolve should only be called for derived data types.");
         }

@@ -17,9 +17,10 @@ package org.onosproject.yangutils.datamodel;
 
 import java.util.LinkedList;
 import java.util.List;
+
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.parser.Parsable;
-import org.onosproject.yangutils.utils.YangConstructType;
+import org.onosproject.yangutils.datamodel.utils.Parsable;
+import org.onosproject.yangutils.datamodel.utils.YangConstructType;
 
 import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.detectCollidingChildUtil;
 
@@ -58,6 +59,8 @@ import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.detectCol
  */
 public class YangTypeDef extends YangNode implements YangCommonInfo, Parsable, YangTypeHolder, CollisionDetector {
 
+    private static final long serialVersionUID = 806201615L;
+
     /**
      * Default value in string, needs to be converted to the target object,
      * based on the type.

@@ -18,9 +18,10 @@ package org.onosproject.yangutils.datamodel;
 
 import java.util.LinkedList;
 import java.util.List;
+
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.parser.Parsable;
-import org.onosproject.yangutils.utils.YangConstructType;
+import org.onosproject.yangutils.datamodel.utils.Parsable;
+import org.onosproject.yangutils.datamodel.utils.YangConstructType;
 
 /*
  * Reference RFC 6020.
@@ -49,6 +50,8 @@ import org.onosproject.yangutils.utils.YangConstructType;
  */
 public class YangUnion extends YangNode implements Parsable, YangTypeHolder {
 
+    private static final long serialVersionUID = 806201616L;
+
     // List of YANG type.
     private List<YangType<?>> typeList;
 
@@ -56,7 +59,7 @@ public class YangUnion extends YangNode implements Parsable, YangTypeHolder {
     private String name;
 
     // Current child union number.
-    private int childUnionNumber;
+    private transient int childUnionNumber;
 
     /**
      * Creates a YANG union node.

@@ -17,14 +17,14 @@ package org.onosproject.yangutils.datamodel;
 
 import java.util.LinkedList;
 import java.util.List;
+
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.linker.Resolvable;
-import org.onosproject.yangutils.linker.ResolvableStatus;
-import org.onosproject.yangutils.parser.Parsable;
-import org.onosproject.yangutils.utils.YangConstructType;
+import org.onosproject.yangutils.datamodel.utils.Parsable;
+import org.onosproject.yangutils.datamodel.utils.ResolvableStatus;
+import org.onosproject.yangutils.datamodel.utils.YangConstructType;
 
 import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.detectCollidingChildUtil;
-import static org.onosproject.yangutils.translator.tojava.utils.JavaIdentifierSyntax.getParentNodeInGenCode;
+import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.getParentNodeInGenCode;
 
 /*-
  * Reference RFC 6020.
@@ -63,6 +63,8 @@ public class YangUses
         extends YangNode
         implements YangCommonInfo, Parsable, Resolvable, CollisionDetector {
 
+    private static final long serialVersionUID = 806201617L;
+
     /**
      * YANG node identifier.
      */
@@ -99,17 +101,17 @@ public class YangUses
     /**
      * Effective list of nodes of grouping that needs to replicated at YANG uses.
      */
-    List<YangNode> resolvedGroupingNodes;
+    private List<YangNode> resolvedGroupingNodes;
 
     /**
      * Effective list of leaves of grouping that needs to replicated at YANG uses.
      */
-    List<List<YangLeaf>> resolvedGroupingLeaves;
+    private List<List<YangLeaf>> resolvedGroupingLeaves;
 
     /**
      * Effective list of leaf lists of grouping that needs to replicated at YANG uses.
      */
-    List<List<YangLeafList>> resolvedGroupingLeafLists;
+    private List<List<YangLeafList>> resolvedGroupingLeafLists;
 
     /**
      * Creates an YANG uses node.
@@ -313,17 +315,17 @@ public class YangUses
         YangNode childInGrouping = referredGrouping.getChild();
 
         while (childInGrouping != null) {
-            if ((childInGrouping instanceof YangEnumeration)
-                    || (childInGrouping instanceof YangUnion)
-                    || (childInGrouping instanceof YangTypeDef)) {
+            if (childInGrouping instanceof YangEnumeration
+                    || childInGrouping instanceof YangUnion
+                    || childInGrouping instanceof YangTypeDef) {
 
                 /*
-                 * No need to copy the leaves, union / enum class,
-                 * as these will be generated in the scope of grouping
+                 * No need to copy the leaves, union / enum class, as these will
+                 * be generated in the scope of grouping
                  */
                 childInGrouping = childInGrouping.getNextSibling();
                 continue;
-            } else if ((childInGrouping instanceof YangUses)) {
+            } else if (childInGrouping instanceof YangUses) {
                 addResolvedUsesInfoOfGrouping((YangUses) childInGrouping,
                         usesParentLeavesHolder);
             } else {
@@ -341,19 +343,16 @@ public class YangUses
      * @param usesHolder     holder of uses
      */
     private void addResolvedUsesInfoOfGrouping(YangUses usesInGrouping,
-                                               YangLeavesHolder usesHolder) throws DataModelException {
-        for (YangNode usesResolvedNode :
-                usesInGrouping.getUsesResolvedNodeList()) {
+            YangLeavesHolder usesHolder) throws DataModelException {
+        for (YangNode usesResolvedNode : usesInGrouping.getUsesResolvedNodeList()) {
             addNodeOfGrouping(usesResolvedNode);
         }
 
-        for (List<YangLeaf> leavesList :
-                usesInGrouping.getUsesResolvedLeavesList()) {
+        for (List<YangLeaf> leavesList : usesInGrouping.getUsesResolvedLeavesList()) {
             addLeavesOfGrouping(cloneLeavesList(leavesList, usesHolder));
         }
 
-        for (List<YangLeafList> listOfLeafLists :
-                usesInGrouping.getUsesResolvedListOfLeafList()) {
+        for (List<YangLeafList> listOfLeafLists : usesInGrouping.getUsesResolvedListOfLeafList()) {
             addListOfLeafListOfGrouping(
                     cloneListOfLeafList(listOfLeafLists, usesHolder));
         }
@@ -368,8 +367,8 @@ public class YangUses
      * @throws DataModelException a violation in data model rule
      */
     private List<YangLeaf> cloneLeavesList(List<YangLeaf> listOfLeaves,
-                                           YangLeavesHolder usesParentNode) throws DataModelException {
-        if ((listOfLeaves == null) || listOfLeaves.size() == 0) {
+            YangLeavesHolder usesParentNode) throws DataModelException {
+        if (listOfLeaves == null || listOfLeaves.size() == 0) {
             throw new DataModelException("No leaves to clone");
         }
 
@@ -399,8 +398,8 @@ public class YangUses
      * @return cloned list of leaf list
      */
     private List<YangLeafList> cloneListOfLeafList(List<YangLeafList> listOfLeafList,
-                                                   YangLeavesHolder usesParentNode) throws DataModelException {
-        if ((listOfLeafList == null) || listOfLeafList.size() == 0) {
+            YangLeavesHolder usesParentNode) throws DataModelException {
+        if (listOfLeafList == null || listOfLeafList.size() == 0) {
             throw new DataModelException("No leaf lists to clone");
         }
 
@@ -422,7 +421,6 @@ public class YangUses
         return newListOfLeafList;
     }
 
-
     @Override
     public ResolvableStatus getResolvableStatus() {
         return resolvableStatus;
@@ -449,7 +447,6 @@ public class YangUses
         }
     }
 
-
     /**
      * Adds the node under grouping to the effective uses resolved info.
      *

@@ -18,6 +18,7 @@ package org.onosproject.yangutils.datamodel.utils;
 
 import java.util.List;
 import java.util.Set;
+
 import org.onosproject.yangutils.datamodel.CollisionDetector;
 import org.onosproject.yangutils.datamodel.ResolvableType;
 import org.onosproject.yangutils.datamodel.YangLeaf;
@@ -29,8 +30,6 @@ import org.onosproject.yangutils.datamodel.YangResolutionInfo;
 import org.onosproject.yangutils.datamodel.YangRpc;
 import org.onosproject.yangutils.datamodel.YangType;
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.parser.Parsable;
-import org.onosproject.yangutils.utils.YangConstructType;
 
 /**
  * Represents utilities for data model tree.
@@ -177,7 +176,7 @@ public final class DataModelUtils {
      * @throws DataModelException a violation of data model rules
      */
     public static void resolveLinkingForResolutionList(List<YangResolutionInfo> resolutionList,
-                                                       YangReferenceResolver dataModelRootNode)
+            YangReferenceResolver dataModelRootNode)
             throws DataModelException {
 
         for (YangResolutionInfo resolutionInfo : resolutionList) {
@@ -193,11 +192,11 @@ public final class DataModelUtils {
      * @throws DataModelException a violation of data model rules
      */
     public static void linkInterFileReferences(List<YangResolutionInfo> resolutionList,
-                                               YangReferenceResolver dataModelRootNode)
+            YangReferenceResolver dataModelRootNode)
             throws DataModelException {
         /*
-         * Run through the resolution list, find type/uses referring to
-         * inter file typedef/grouping, ask for linking.
+         * Run through the resolution list, find type/uses referring to inter
+         * file typedef/grouping, ask for linking.
          */
         for (YangResolutionInfo resolutionInfo : resolutionList) {
             resolutionInfo.linkInterFile(dataModelRootNode);
@@ -240,4 +239,20 @@ public final class DataModelUtils {
         }
         return null;
     }
+
+    /**
+     * Returns the contained data model parent node.
+     *
+     * @param currentNode current node which parent contained node is required
+     * @return parent node in which the current node is an attribute
+     */
+    public static YangNode getParentNodeInGenCode(YangNode currentNode) {
+
+        /*
+         * TODO: recursive parent lookup to support choice/augment/uses. TODO:
+         * need to check if this needs to be updated for
+         * choice/case/augment/grouping
+         */
+        return currentNode.getParent();
+    }
 }

@@ -14,10 +14,9 @@
  * limitations under the License.
  */
 
-package org.onosproject.yangutils.parser;
+package org.onosproject.yangutils.datamodel.utils;
 
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.utils.YangConstructType;
 
 /**
  * Abstraction of an entity which process the data of lexer's parse tree.

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package org.onosproject.yangutils.linker;
+package org.onosproject.yangutils.datamodel.utils;
 
 /**
  * Represents the status of resolvable entity.

@@ -16,14 +16,6 @@
 
 package org.onosproject.yangutils.datamodel.utils;
 
-import java.util.regex.Pattern;
-import org.onosproject.yangutils.datamodel.YangDataTypes;
-import org.onosproject.yangutils.datamodel.YangRangeInterval;
-import org.onosproject.yangutils.datamodel.YangRangeRestriction;
-import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.utils.YangConstructType;
-import org.onosproject.yangutils.datamodel.utils.builtindatatype.YangBuiltInDataTypeInfo;
-
 import static org.onosproject.yangutils.datamodel.YangDataTypes.DECIMAL64;
 import static org.onosproject.yangutils.datamodel.YangDataTypes.INT16;
 import static org.onosproject.yangutils.datamodel.YangDataTypes.INT32;
@@ -33,12 +25,18 @@ import static org.onosproject.yangutils.datamodel.YangDataTypes.UINT16;
 import static org.onosproject.yangutils.datamodel.YangDataTypes.UINT32;
 import static org.onosproject.yangutils.datamodel.YangDataTypes.UINT64;
 import static org.onosproject.yangutils.datamodel.YangDataTypes.UINT8;
-import static org.onosproject.yangutils.utils.UtilConstants.ADD;
-import static org.onosproject.yangutils.utils.UtilConstants.EMPTY_STRING;
-import static org.onosproject.yangutils.utils.YangConstructType.LENGTH_DATA;
-import static org.onosproject.yangutils.utils.YangConstructType.RANGE_DATA;
+import static org.onosproject.yangutils.datamodel.utils.YangConstructType.LENGTH_DATA;
+import static org.onosproject.yangutils.datamodel.utils.YangConstructType.RANGE_DATA;
 import static org.onosproject.yangutils.datamodel.utils.builtindatatype.BuiltInTypeObjectFactory.getDataObjectFromString;
 
+import java.util.regex.Pattern;
+
+import org.onosproject.yangutils.datamodel.YangDataTypes;
+import org.onosproject.yangutils.datamodel.YangRangeInterval;
+import org.onosproject.yangutils.datamodel.YangRangeRestriction;
+import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
+import org.onosproject.yangutils.datamodel.utils.builtindatatype.YangBuiltInDataTypeInfo;
+
 /**
  * Represents restriction resolver which provide common utility used by parser
  * and during linking for restriction resolution.
@@ -46,6 +44,8 @@ import static org.onosproject.yangutils.datamodel.utils.builtindatatype.BuiltInT
 public final class RestrictionResolver {
 
     private static final String PIPE = "|";
+    private static final String ADD = "+";
+    private static final String EMPTY_STRING = "";
     private static final String INTERVAL = "..";
     private static final int MAX_RANGE_BOUNDARY = 2;
     private static final int MIN_RANGE_BOUNDARY = 1;
@@ -71,9 +71,9 @@ public final class RestrictionResolver {
      * @throws DataModelException a violation in data model rule
      */
     public static YangRangeRestriction processRangeRestriction(YangRangeRestriction refRangeRestriction,
-                                                               int lineNumber, int charPositionInLine,
-                                                               boolean hasReferredRestriction,
-                                                               String curRangeString, YangDataTypes effectiveType)
+            int lineNumber, int charPositionInLine,
+            boolean hasReferredRestriction,
+            String curRangeString, YangDataTypes effectiveType)
             throws DataModelException {
         YangBuiltInDataTypeInfo<?> startValue;
         YangBuiltInDataTypeInfo<?> endValue;
@@ -157,9 +157,9 @@ public final class RestrictionResolver {
      * @throws DataModelException a violation in data model rule
      */
     public static YangRangeRestriction processLengthRestriction(YangRangeRestriction refLengthRestriction,
-                                                                int lineNumber, int charPositionInLine,
-                                                                boolean hasReferredRestriction,
-                                                                String curLengthString) throws DataModelException {
+            int lineNumber, int charPositionInLine,
+            boolean hasReferredRestriction,
+            String curLengthString) throws DataModelException {
 
         YangBuiltInDataTypeInfo<?> startValue;
         YangBuiltInDataTypeInfo<?> endValue;
@@ -238,7 +238,7 @@ public final class RestrictionResolver {
      * @return true, if data type can have range restrictions, false otherwise
      */
     public static boolean isOfRangeRestrictedType(YangDataTypes dataType) {
-        return (dataType == INT8
+        return dataType == INT8
                 || dataType == INT16
                 || dataType == INT32
                 || dataType == INT64
@@ -246,7 +246,7 @@ public final class RestrictionResolver {
                 || dataType == UINT16
                 || dataType == UINT32
                 || dataType == UINT64
-                || dataType == DECIMAL64);
+                || dataType == DECIMAL64;
     }
 
     /**

@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.onosproject.yangutils.utils;
+package org.onosproject.yangutils.datamodel.utils;
 
 /**
  * Represents ENUM to represent the type of data in parse tree.

@@ -15,12 +15,16 @@
  */
 package org.onosproject.yangutils.datamodel.utils.builtindatatype;
 
+import java.io.Serializable;
+
 import org.onosproject.yangutils.datamodel.YangDataTypes;
 
 /**
  * Factory to create an object of required type.
  */
-public final class BuiltInTypeObjectFactory {
+public final class BuiltInTypeObjectFactory implements Serializable {
+
+    private static final long serialVersionUID = 8006201671L;
 
     /**
      * Utility factory class, hence the object creation is forbidden.
@@ -38,36 +42,36 @@ public final class BuiltInTypeObjectFactory {
      * @return the target data type object with the value initialized
      */
     public static <T extends YangBuiltInDataTypeInfo<?>> T getDataObjectFromString(String valueInStr,
-                                                                                   YangDataTypes builtInType) {
+            YangDataTypes builtInType) {
 
         switch (builtInType) {
-            case INT8: {
-                return (T) new YangInt8(valueInStr);
-            }
-            case INT16: {
-                return (T) new YangInt16(valueInStr);
-            }
-            case INT32: {
-                return (T) new YangInt32(valueInStr);
-            }
-            case INT64: {
-                return (T) new YangInt64(valueInStr);
-            }
-            case UINT8: {
-                return (T) new YangUint8(valueInStr);
-            }
-            case UINT16: {
-                return (T) new YangUint16(valueInStr);
-            }
-            case UINT32: {
-                return (T) new YangUint32(valueInStr);
-            }
-            case UINT64: {
-                return (T) new YangUint64(valueInStr);
-            }
-            default: {
-                throw new DataTypeException("YANG file error : Unsupported data type");
-            }
+        case INT8: {
+            return (T) new YangInt8(valueInStr);
+        }
+        case INT16: {
+            return (T) new YangInt16(valueInStr);
+        }
+        case INT32: {
+            return (T) new YangInt32(valueInStr);
+        }
+        case INT64: {
+            return (T) new YangInt64(valueInStr);
+        }
+        case UINT8: {
+            return (T) new YangUint8(valueInStr);
+        }
+        case UINT16: {
+            return (T) new YangUint16(valueInStr);
+        }
+        case UINT32: {
+            return (T) new YangUint32(valueInStr);
+        }
+        case UINT64: {
+            return (T) new YangUint64(valueInStr);
+        }
+        default: {
+            throw new DataTypeException("YANG file error : Unsupported data type");
+        }
         }
 
     }

@@ -16,13 +16,17 @@
 
 package org.onosproject.yangutils.datamodel.utils.builtindatatype;
 
+import java.io.Serializable;
 import java.util.Objects;
+
 import com.google.common.base.MoreObjects;
 
 /**
  * Represents binary data type.
  */
-public final class YangBinary {
+public final class YangBinary implements Serializable {
+
+    private static final long serialVersionUID = 8006201670L;
 
     private byte[] byteArray;
 
@@ -38,7 +42,7 @@ public final class YangBinary {
      * @param bytes byte array
      */
     public YangBinary(byte[] bytes) {
-        this.byteArray = bytes;
+        byteArray = bytes;
     }
 
     /**

@@ -16,13 +16,17 @@
 
 package org.onosproject.yangutils.datamodel.utils.builtindatatype;
 
+import java.io.Serializable;
 import java.util.Objects;
+
 import com.google.common.base.MoreObjects;
 
 /**
  * Represents bits data type.
  */
-public class YangBits {
+public class YangBits implements Serializable {
+
+    private static final long serialVersionUID = 8006201669L;
 
     private byte[] byteArray;
 
@@ -38,7 +42,7 @@ public class YangBits {
      * @param bytes byte array
      */
     public YangBits(byte[] bytes) {
-        this.byteArray = bytes;
+        byteArray = bytes;
     }
 
     /**

@@ -16,13 +16,17 @@
 
 package org.onosproject.yangutils.datamodel.utils.builtindatatype;
 
+import java.io.Serializable;
 import java.util.Objects;
+
 import com.google.common.base.MoreObjects;
 
 /**
  * Represents YANG decimal 64.
  */
-public class YangDecimal64 {
+public class YangDecimal64 implements Serializable {
+
+    private static final long serialVersionUID = 8006201668L;
 
     private int fractionDigit;
 
@@ -38,7 +42,7 @@ public class YangDecimal64 {
      * @param fractionDigit fraction digit
      */
     public YangDecimal64(int fractionDigit) {
-        this.setFractionDigit(fractionDigit);
+        setFractionDigit(fractionDigit);
     }
 
     /**

@@ -16,15 +16,18 @@
 
 package org.onosproject.yangutils.datamodel.utils.builtindatatype;
 
-import org.onosproject.yangutils.datamodel.YangDataTypes;
+import java.io.Serializable;
 
+import org.onosproject.yangutils.datamodel.YangDataTypes;
 
 /**
  * Handles the YANG's int16 data type processing.
  *
  * int16 represents integer values between -32768 and 32767, inclusively.
  */
-public class YangInt16 implements YangBuiltInDataTypeInfo<YangInt16> {
+public class YangInt16 implements YangBuiltInDataTypeInfo<YangInt16>, Serializable {
+
+    private static final long serialVersionUID = 8006201667L;
 
     /**
      * YANG's min keyword.

@@ -16,6 +16,8 @@
 
 package org.onosproject.yangutils.datamodel.utils.builtindatatype;
 
+import java.io.Serializable;
+
 import org.onosproject.yangutils.datamodel.YangDataTypes;
 
 /**
@@ -23,7 +25,9 @@ import org.onosproject.yangutils.datamodel.YangDataTypes;
  *
  * int32 represents integer values between -2147483648 and 2147483647, inclusively.
  */
-public class YangInt32 implements YangBuiltInDataTypeInfo<YangInt32> {
+public class YangInt32 implements YangBuiltInDataTypeInfo<YangInt32>, Serializable {
+
+    private static final long serialVersionUID = 8006201666L;
 
     /**
      * YANG's min keyword.
@@ -72,7 +76,6 @@ public class YangInt32 implements YangBuiltInDataTypeInfo<YangInt32> {
         }
     }
 
-
     /**
      * Returns YANG's int32 value.
      *

@@ -16,6 +16,8 @@
 
 package org.onosproject.yangutils.datamodel.utils.builtindatatype;
 
+import java.io.Serializable;
+
 import org.onosproject.yangutils.datamodel.YangDataTypes;
 
 /**
@@ -23,7 +25,9 @@ import org.onosproject.yangutils.datamodel.YangDataTypes;
  *
  * int8 represents integer values between -9223372036854775808 and 9223372036854775807, inclusively.
  */
-public class YangInt64 implements YangBuiltInDataTypeInfo<YangInt64> {
+public class YangInt64 implements YangBuiltInDataTypeInfo<YangInt64>, Serializable {
+
+    private static final long serialVersionUID = 8006201665L;
 
     /**
      * YANG's min keyword.
@@ -72,7 +76,6 @@ public class YangInt64 implements YangBuiltInDataTypeInfo<YangInt64> {
         }
     }
 
-
     /**
      * Returns YANG's int64 value.
      *

@@ -16,6 +16,8 @@
 
 package org.onosproject.yangutils.datamodel.utils.builtindatatype;
 
+import java.io.Serializable;
+
 import org.onosproject.yangutils.datamodel.YangDataTypes;
 
 /**
@@ -23,7 +25,9 @@ import org.onosproject.yangutils.datamodel.YangDataTypes;
  *
  * int8 represents integer values between -128 and 127, inclusively.
  */
-public class YangInt8 implements YangBuiltInDataTypeInfo<YangInt8> {
+public class YangInt8 implements YangBuiltInDataTypeInfo<YangInt8>, Serializable {
+
+    private static final long serialVersionUID = 8006201664L;
 
     /**
      * YANG's min keyword.

@@ -16,6 +16,8 @@
 
 package org.onosproject.yangutils.datamodel.utils.builtindatatype;
 
+import java.io.Serializable;
+
 import org.onosproject.yangutils.datamodel.YangDataTypes;
 
 /**
@@ -23,7 +25,9 @@ import org.onosproject.yangutils.datamodel.YangDataTypes;
  *
  * Uint16 represents integer values between 0 and 65535, inclusively.
  */
-public class YangUint16 implements YangBuiltInDataTypeInfo<YangUint16> {
+public class YangUint16 implements YangBuiltInDataTypeInfo<YangUint16>, Serializable {
+
+    private static final long serialVersionUID = 8006201663L;
 
     /**
      * YANG's min keyword.
@@ -100,4 +104,3 @@ public class YangUint16 implements YangBuiltInDataTypeInfo<YangUint16> {
     }
 
 }
-

@@ -16,6 +16,8 @@
 
 package org.onosproject.yangutils.datamodel.utils.builtindatatype;
 
+import java.io.Serializable;
+
 import org.onosproject.yangutils.datamodel.YangDataTypes;
 
 /**
@@ -23,7 +25,9 @@ import org.onosproject.yangutils.datamodel.YangDataTypes;
  *
  * Uint32 represents integer values between 0 and 4294967295, inclusively.
  */
-public class YangUint32 implements YangBuiltInDataTypeInfo<YangUint32> {
+public class YangUint32 implements YangBuiltInDataTypeInfo<YangUint32>, Serializable {
+
+    private static final long serialVersionUID = 8006201662L;
 
     private static final String MIN_KEYWORD = "min";
     private static final String MAX_KEYWORD = "max";

@@ -16,8 +16,10 @@
 
 package org.onosproject.yangutils.datamodel.utils.builtindatatype;
 
+import java.io.Serializable;
 import java.math.BigInteger;
 import java.util.regex.Pattern;
+
 import org.onosproject.yangutils.datamodel.YangDataTypes;
 
 /**
@@ -25,7 +27,9 @@ import org.onosproject.yangutils.datamodel.YangDataTypes;
  *
  * Uint64 represents integer values between 0 and 18446744073709551615, inclusively.
  */
-public class YangUint64 implements YangBuiltInDataTypeInfo<YangUint64> {
+public class YangUint64 implements YangBuiltInDataTypeInfo<YangUint64>, Serializable {
+
+    private static final long serialVersionUID = 8006201661L;
 
     /**
      * YANG's min keyword.

@@ -16,6 +16,8 @@
 
 package org.onosproject.yangutils.datamodel.utils.builtindatatype;
 
+import java.io.Serializable;
+
 import org.onosproject.yangutils.datamodel.YangDataTypes;
 
 /**
@@ -23,7 +25,9 @@ import org.onosproject.yangutils.datamodel.YangDataTypes;
  *
  * Uint8 represents integer values between 0 and 255, inclusively.
  */
-public class YangUint8 implements YangBuiltInDataTypeInfo<YangUint8> {
+public class YangUint8 implements YangBuiltInDataTypeInfo<YangUint8>, Serializable {
+
+    private static final long serialVersionUID = 8006201660L;
 
     /**
      * YANG's min keyword.

+<!--
+  ~ 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.
+  -->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <parent>
+        <groupId>org.onosproject</groupId>
+        <artifactId>onos-yangutils</artifactId>
+        <version>1.7.0-SNAPSHOT</version>
+        <relativePath>../pom.xml</relativePath>
+    </parent>
+
+    <artifactId>yangutils-maven-plugin</artifactId>
+    <version>1.0.0-SNAPSHOT</version>
+    <name>onos-yang-utils-plugin</name>
+    <packaging>maven-plugin</packaging>
+
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
+    <dependencies>
+         <dependency>
+            <groupId>org.onosproject</groupId>
+            <artifactId>yangutils-datamodel</artifactId>
+            <version>1.7.0-SNAPSHOT</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.maven</groupId>
+            <artifactId>maven-core</artifactId>
+            <version>3.3.9</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.maven</groupId>
+            <artifactId>maven-plugin-api</artifactId>
+            <version>3.3.9</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.maven.plugin-tools</groupId>
+            <artifactId>maven-plugin-annotations</artifactId>
+            <version>3.4</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.felix</groupId>
+            <artifactId>maven-scr-plugin</artifactId>
+            <version>1.21.0</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.maven</groupId>
+            <artifactId>maven-artifact</artifactId>
+            <version>3.3.9</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.maven</groupId>
+            <artifactId>maven-project</artifactId>
+            <version>3.0-alpha-2</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.maven</groupId>
+            <artifactId>maven-model</artifactId>
+            <version>3.3.9</version>
+        </dependency>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>4.12</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.sonatype.plexus</groupId>
+            <artifactId>plexus-build-api</artifactId>
+            <version>0.0.7</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>commons-io</groupId>
+            <artifactId>commons-io</artifactId>
+            <version>2.4</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.hamcrest</groupId>
+            <artifactId>hamcrest-all</artifactId>
+            <version>1.3</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.onosproject</groupId>
+            <artifactId>onlab-junit</artifactId>
+            <version>1.7.0-SNAPSHOT</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.antlr</groupId>
+            <artifactId>antlr4-runtime</artifactId>
+            <version>4.5.3</version>
+        </dependency>
+        <dependency>
+            <groupId>org.codehaus.mojo</groupId>
+            <artifactId>build-helper-maven-plugin</artifactId>
+            <version>1.10</version>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.antlr</groupId>
+                <artifactId>antlr4-maven-plugin</artifactId>
+                <version>4.5</version>
+                <executions>
+                    <execution>
+                        <phase>generate-sources</phase>
+                        <goals>
+                            <goal>antlr4</goal>
+                        </goals>
+                    </execution>
+                </executions>
+                <configuration>
+                    <sourceDirectory>src/main/resources</sourceDirectory>
+                    <outputDirectory>target/generated-sources/org/onosproject/yangutils/parser/antlrgencode</outputDirectory>
+                    <visitor>false</visitor>
+                    <listener>true</listener>
+                </configuration>
+            </plugin>
+            <plugin>
+                <artifactId>maven-clean-plugin</artifactId>
+                <version>3.0.0</version>
+                <executions>
+                    <execution>
+                        <id>Deleting auto-generated listener interfaces</id>
+                        <phase>generate-sources</phase>
+                        <goals>
+                            <goal>clean</goal>
+                        </goals>
+                    </execution>
+                </executions>
+                <configuration>
+                    <excludeDefaultDirectories>true</excludeDefaultDirectories>
+                    <filesets>
+                        <fileset>
+                            <directory>target</directory>
+                            <followSymlinks>false</followSymlinks>
+                            <useDefaultExcludes>true</useDefaultExcludes>
+                            <excludes>
+                                <exclude>**/generated-sources/org/onosproject/yangutils/parser/antlrgencode/GeneratedYangLexer.java</exclude>
+                                <exclude>**/generated-sources/org/onosproject/yangutils/parser/antlrgencode/GeneratedYang.tokens</exclude>
+                                <exclude>**/generated-sources/org/onosproject/yangutils/parser/antlrgencode/GeneratedYangParser.java</exclude>
+                                <exclude>**/generated-sources/org/onosproject/yangutils/parser/antlrgencode/GeneratedYangLexer.tokens</exclude>
+                                <exclude>**/generated-sources/org/onosproject/yangutils/parser/antlrgencode/YangLexer.java</exclude>
+                                <exclude>**/generated-sources/org/onosproject/yangutils/parser/antlrgencode/YangLexer.tokens</exclude>
+                            </excludes>
+                        </fileset>
+                    </filesets>
+                    <verbose>true</verbose>
+                </configuration>
+            </plugin>
+            <plugin>
+                <groupId>org.codehaus.mojo</groupId>
+                <artifactId>build-helper-maven-plugin</artifactId>
+                <version>1.10</version>
+                <executions>
+                    <execution>
+                        <id>add-source</id>
+                        <phase>generate-sources</phase>
+                        <goals>
+                            <goal>add-source</goal>
+                        </goals>
+                        <configuration>
+                            <sources>
+                                <source>target/generated-sources/org/onosproject/yangutils/parser/antlrgencode</source>
+                            </sources>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.felix</groupId>
+                <artifactId>maven-bundle-plugin</artifactId>
+                <extensions>true</extensions>
+                <configuration>
+                    <instructions>
+                        <Export-Package>
+                            org.onosproject.yangutils.parser.*
+                        </Export-Package>
+                    </instructions>
+                </configuration>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-plugin-plugin</artifactId>
+                <version>3.4</version>
+                <configuration>
+                    <skipErrorNoDescriptorsFound>true</skipErrorNoDescriptorsFound>
+                </configuration>
+                <executions>
+                    <execution>
+                        <phase>generate-sources</phase>
+                        <goals>
+                            <goal>descriptor</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>

@@ -15,6 +15,8 @@
  */
 package org.onosproject.yangutils.linker.impl;
 
+import java.io.Serializable;
+
 import org.onosproject.yangutils.datamodel.YangEntityToResolveInfo;
 import org.onosproject.yangutils.datamodel.YangNode;
 import org.onosproject.yangutils.datamodel.YangType;
@@ -26,7 +28,9 @@ import org.onosproject.yangutils.linker.exceptions.LinkerException;
  *
  * @param <T> type of entity being resolved, uses / grouping
  */
-public class YangEntityToResolveInfoImpl<T> implements YangEntityToResolveInfo<T> {
+public class YangEntityToResolveInfoImpl<T> implements YangEntityToResolveInfo<T>, Serializable {
+
+    private static final long serialVersionUID = 806201659L;
 
     // Parsable node for which resolution is to be performed.
     private T entityToResolve;

@@ -22,7 +22,8 @@ import org.antlr.v4.runtime.ParserRuleContext;
 import org.antlr.v4.runtime.tree.ErrorNode;
 import org.antlr.v4.runtime.tree.TerminalNode;
 import org.onosproject.yangutils.datamodel.YangNode;
-import org.onosproject.yangutils.parser.Parsable;
+import org.onosproject.yangutils.datamodel.utils.Parsable;
+import org.onosproject.yangutils.datamodel.utils.YangConstructType;
 import org.onosproject.yangutils.parser.antlrgencode.GeneratedYangListener;
 import org.onosproject.yangutils.parser.antlrgencode.GeneratedYangParser;
 import org.onosproject.yangutils.parser.impl.listeners.AugmentListener;
@@ -75,7 +76,6 @@ import org.onosproject.yangutils.parser.impl.listeners.UnitsListener;
 import org.onosproject.yangutils.parser.impl.listeners.UsesListener;
 import org.onosproject.yangutils.parser.impl.listeners.ValueListener;
 import org.onosproject.yangutils.parser.impl.listeners.VersionListener;
-import org.onosproject.yangutils.utils.YangConstructType;
 
 import static org.onosproject.yangutils.utils.UtilConstants.UNSUPPORTED_YANG_CONSTRUCT;
 import static org.onosproject.yangutils.utils.UtilConstants.CURRENTLY_UNSUPPORTED;

@@ -25,13 +25,19 @@ import org.onosproject.yangutils.datamodel.YangNodeIdentifier;
 import org.onosproject.yangutils.datamodel.YangSubModule;
 import org.onosproject.yangutils.datamodel.YangUses;
 import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.parser.Parsable;
+import org.onosproject.yangutils.datamodel.utils.Parsable;
 import org.onosproject.yangutils.parser.antlrgencode.GeneratedYangParser;
 import org.onosproject.yangutils.parser.exceptions.ParserException;
 import org.onosproject.yangutils.parser.impl.TreeWalkListener;
 
 import static org.onosproject.yangutils.datamodel.utils.GeneratedLanguage.JAVA_GENERATION;
-import static org.onosproject.yangutils.datamodel.utils.YangDataModelFactory.getYangAugmentNode;
+import static org.onosproject.yangutils.datamodel.utils.YangConstructType.AUGMENT_DATA;
+import static org.onosproject.yangutils.datamodel.utils.YangConstructType.CASE_DATA;
+import static org.onosproject.yangutils.datamodel.utils.YangConstructType.DATA_DEF_DATA;
+import static org.onosproject.yangutils.datamodel.utils.YangConstructType.DESCRIPTION_DATA;
+import static org.onosproject.yangutils.datamodel.utils.YangConstructType.REFERENCE_DATA;
+import static org.onosproject.yangutils.datamodel.utils.YangConstructType.STATUS_DATA;
+import static org.onosproject.yangutils.datamodel.utils.YangConstructType.WHEN_DATA;
 import static org.onosproject.yangutils.parser.impl.parserutils.AugmentListenerUtil.generateNameForAugmentNode;
 import static org.onosproject.yangutils.parser.impl.parserutils.AugmentListenerUtil.getParentsPrefix;
 import static org.onosproject.yangutils.parser.impl.parserutils.AugmentListenerUtil.parserException;
@@ -51,13 +57,7 @@ import static org.onosproject.yangutils.parser.impl.parserutils.ListenerUtil.get
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerValidation.checkStackIsNotEmpty;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerValidation.validateCardinalityMaxOne;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerValidation.validateMutuallyExclusiveChilds;
-import static org.onosproject.yangutils.utils.YangConstructType.AUGMENT_DATA;
-import static org.onosproject.yangutils.utils.YangConstructType.CASE_DATA;
-import static org.onosproject.yangutils.utils.YangConstructType.DATA_DEF_DATA;
-import static org.onosproject.yangutils.utils.YangConstructType.DESCRIPTION_DATA;
-import static org.onosproject.yangutils.utils.YangConstructType.REFERENCE_DATA;
-import static org.onosproject.yangutils.utils.YangConstructType.STATUS_DATA;
-import static org.onosproject.yangutils.utils.YangConstructType.WHEN_DATA;
+import static org.onosproject.yangutils.translator.tojava.YangDataModelFactory.getYangAugmentNode;
 
 /*
  * Reference: RFC6020 and YANG ANTLR Grammar

@@ -23,6 +23,7 @@ import org.onosproject.yangutils.parser.antlrgencode.GeneratedYangParser;
 import org.onosproject.yangutils.parser.exceptions.ParserException;
 import org.onosproject.yangutils.parser.impl.TreeWalkListener;
 
+import static org.onosproject.yangutils.datamodel.utils.YangConstructType.YANGBASE_DATA;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorLocation.ENTRY;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorLocation.EXIT;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorMessageConstruction.constructListenerErrorMessage;
@@ -31,7 +32,6 @@ import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorTyp
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorType.MISSING_HOLDER;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerValidation.checkStackIsEmpty;
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerValidation.checkStackIsNotEmpty;
-import static org.onosproject.yangutils.utils.YangConstructType.YANGBASE_DATA;
 
 /*
  * Reference: RFC6020 and YANG ANTLR Grammar