Moving yangtools to separate repo

https://gerrit.onosproject.org/onos-yang-tools

Change-Id: I0dc994264b9b698cba2344b48e4e226b22951f55

@@ -33,7 +33,6 @@
     <modules>
     <modules>
         <module>junit</module>
         <module>junit</module>
         <module>misc</module>
         <module>misc</module>
-        <module>yangutils</module>
         <module>osgi</module>
         <module>osgi</module>
         <module>rest</module>
         <module>rest</module>
         <module>osgiwrap</module>
         <module>osgiwrap</module>

-<!--
-  ~ 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>
-    </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>

-/*-
- * 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.datamodel;
-
-import java.io.Serializable;
-import org.onosproject.yangutils.datamodel.utils.builtindatatype.DataTypeException;
-import org.onosproject.yangutils.datamodel.utils.builtindatatype.YangBuiltInDataTypeInfo;
-import org.onosproject.yangutils.datamodel.utils.builtindatatype.YangDataTypes;
-import org.onosproject.yangutils.datamodel.utils.builtindatatype.YangInt16;
-import org.onosproject.yangutils.datamodel.utils.builtindatatype.YangInt32;
-import org.onosproject.yangutils.datamodel.utils.builtindatatype.YangInt64;
-import org.onosproject.yangutils.datamodel.utils.builtindatatype.YangInt8;
-import org.onosproject.yangutils.datamodel.utils.builtindatatype.YangUint16;
-import org.onosproject.yangutils.datamodel.utils.builtindatatype.YangUint32;
-import org.onosproject.yangutils.datamodel.utils.builtindatatype.YangUint64;
-import org.onosproject.yangutils.datamodel.utils.builtindatatype.YangUint8;
-
-/**
- * Factory to create an object of required type.
- */
-public final class BuiltInTypeObjectFactory implements Serializable {
-
-    private static final long serialVersionUID = 8006201671L;
-
-    /**
-     * Utility factory class, hence the object creation is forbidden.
-     */
-    private BuiltInTypeObjectFactory() {
-    }
-
-    /**
-     * Given the value represented in string return the corresponding types
-     * object with the value initialized.
-     *
-     * @param valueInStr  value represented in string
-     * @param builtInType built in data type
-     * @param <T>         the data type of the target object
-     * @return the target data type object with the value initialized
-     */
-    public static <T extends YangBuiltInDataTypeInfo<?>> T getDataObjectFromString(String valueInStr,
-                                                                                   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);
-            }
-            case DECIMAL64: {
-                return (T) new YangDecimal64(valueInStr);
-            }
-            default: {
-                throw new DataTypeException("YANG file error : Unsupported data type");
-            }
-        }
-    }
-}

-/*
- * 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.datamodel;
-
-import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.datamodel.utils.YangConstructType;
-
-/**
- * Abstraction of YANG collision function. Abstracted to unify the collision
- * detection functionality.
- */
-public interface CollisionDetector {
-    /**
-     * Checks for the colliding child.
-     *
-     * @param identifierName name of identifier for which collision to be
-     * checked
-     * @param dataType type of the YANG construct for which collision to be
-     * checked
-     * @throws DataModelException if there is any collision in YANG rules in
-     *             parsed data, corresponding exception should be thrown
-     */
-    void detectCollidingChild(String identifierName, YangConstructType dataType)
-            throws DataModelException;
-
-    /**
-     * Check for the self collision.
-     *
-     * @param identifierName name of identifier for which collision to be
-     * checked
-     * @param dataType type of the YANG construct for which collision to be
-     * checked
-     * @throws DataModelException if there is any collision in YANG rules in
-     *                            parsed data, corresponding exception should be thrown
-     */
-    void detectSelfCollision(String identifierName, YangConstructType dataType)
-            throws DataModelException;
-}

-/*
- * 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.datamodel;
-
-/**
- * Abstraction of location information, this is used during resolution is
- * carried out and line/character position in line is required to point
- * out the error location in YANG file.
- */
-public interface LocationInfo {
-
-    /**
-     * Returns the line number YANG construct in file.
-     *
-     * @return the line number YANG construct in file
-     */
-    int getLineNumber();
-
-    /**
-     * Returns the character position in line.
-     *
-     * @return the character position in line
-     */
-    int getCharPosition();
-
-    /**
-     * Sets line number of YANG construct.
-     *
-     * @param lineNumber the line number of YANG construct in file
-     */
-    void setLineNumber(int lineNumber);
-
-    /**
-     * Sets character position of YANG construct.
-     *
-     * @param charPositionInLine character position of YANG construct in file
-     */
-    void setCharPosition(int charPositionInLine);
-}

-/*
- * 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.datamodel;
-
-import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.datamodel.utils.ResolvableStatus;
-
-/**
- * Abstraction of YANG resolvable information. Abstracted to obtain the
- * information required for linking resolution.
- *
- * @param <T>  YANG resolvable info
- */
-public interface Resolvable<T> {
-
-    /**
-     * Returns the status of resolution. If completely resolved returns enum
-     * value "RESOLVED", if not returns "UNRESOLVED", in case reference of
-     * grouping/typedef is added to uses/type but it's not resolved
-     * "INTRA_FILE_RESOLVED" is returned.
-     *
-     * @return status of resolution
-     */
-    ResolvableStatus getResolvableStatus();
-
-    /**
-     * Set the status of type/uses resolution. If completely resolved set enum
-     * value "RESOLVED", if not set it to "UNRESOLVED", in case reference of
-     * grouping/typedef is added to uses/type but it's not resolved
-     * "INTRA_FILE_RESOLVED" should be set.
-     *
-     * @param resolvableStatus status of resolution
-     */
-    void setResolvableStatus(ResolvableStatus resolvableStatus);
-
-    /**
-     * Resolves the linking.
-     *
-     * @return list of entities to be added for resolution
-     * @throws DataModelException data model exception
-     */
-    T resolve()
-            throws DataModelException;
-}

-/*
- * 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.datamodel;
-
-/**
- * Type of the resolvable info.
- */
-public enum ResolvableType {
-
-    /**
-     * Identifies the derived data type.
-     */
-    YANG_DERIVED_DATA_TYPE,
-
-    /**
-     * Identifies the uses.
-     */
-    YANG_USES,
-
-    /**
-     * Identifies the if-feature.
-     */
-    YANG_IF_FEATURE,
-
-    /**
-     * Identifies the leafref.
-     */
-    YANG_LEAFREF,
-
-    /**
-     * Identifies the base.
-     */
-    YANG_BASE,
-
-    /**
-     * Identifies the identityref.
-     */
-    YANG_IDENTITYREF,
-
-    /**
-     * Identifies the augment.
-     */
-    YANG_AUGMENT
-}

-/*
- * 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.datamodel;
-
-/**
- * Represents class having rpc and notification.
- */
-public interface RpcNotificationContainer {
-}

-/*
- * 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.datamodel;
-
-/**
- * Represents data model tree traversal types.
- */
-public enum TraversalType {
-
-    /**
-     * Start of traversal at the tree root.
-     */
-    ROOT,
-
-    /**
-     * Child node traversal.
-     */
-    CHILD,
-
-    /**
-     * Sibling node traversal.
-     */
-    SIBILING,
-
-    /**
-     * Parent node traversal.
-     */
-    PARENT
-}

-/*
- * 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.datamodel;
-
-import java.util.LinkedList;
-import java.util.List;
-import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.datamodel.utils.Parsable;
-import org.onosproject.yangutils.datamodel.utils.YangConstructType;
-
-/**
- * Represents data model node to maintain information defined in YANG app-data-structure.
- */
-public class YangAppDataStructure implements Parsable {
-
-    /**
-     * Data structure information.
-     */
-    private YangDataStructure dataStructure;
-
-    /**
-     * List of key names.
-     */
-    private List<String> keyList;
-
-    /**
-     * Prefix of app-data-structure.
-     */
-    private String prefix;
-
-    /**
-     * Returns the YANG data structure information.
-     *
-     * @return the YANG data structure information
-     */
-    public YangDataStructure getDataStructure() {
-        return dataStructure;
-    }
-
-    /**
-     * Sets the YANG data structure information.
-     *
-     * @param dataStructure the YANG data structure to set
-     */
-    public void setDataStructure(YangDataStructure dataStructure) {
-        this.dataStructure = dataStructure;
-    }
-
-    /**
-     * Returns the list of key field names.
-     *
-     * @return the list of key field names
-     */
-    public List<String> getKeyList() {
-        return keyList;
-    }
-
-    /**
-     * Sets the list of key field names.
-     *
-     * @param keyList the list of key field names
-     */
-    public void setKeyList(List<String> keyList) {
-        this.keyList = keyList;
-    }
-
-    /**
-     * Adds a key field name.
-     *
-     * @param key key field name
-     */
-    public void addKey(String key) {
-        if (getKeyList() == null) {
-            setKeyList(new LinkedList<>());
-        }
-        getKeyList().add(key);
-    }
-
-    /**
-     * Returns the prefix.
-     *
-     * @return the prefix
-     */
-    public String getPrefix() {
-        return prefix;
-    }
-
-    /**
-     * Sets the prefix information.
-     *
-     * @param prefix the prefix to set
-     */
-    public void setPrefix(String prefix) {
-        this.prefix = prefix;
-    }
-
-    @Override
-    public YangConstructType getYangConstructType() {
-        return YangConstructType.APP_DATA_STRUCTURE;
-    }
-
-    @Override
-    public void validateDataOnEntry() throws DataModelException {
-        // TODO : to be implemented
-    }
-
-    @Override
-    public void validateDataOnExit() throws DataModelException {
-        // TODO : to be implemented
-    }
-}

-/*
- * 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.datamodel;
-
-/**
- * Represents data model node to maintain YANG app error message information.
- */
-public interface YangAppErrorHolder {
-
-    /**
-     * Sets the application's error information.
-     *
-     * @param yangAppErrorInfo the application's error information
-     */
-    void setAppErrorInfo(YangAppErrorInfo yangAppErrorInfo);
-
-    /**
-     * Returns application's error information.
-     *
-     * @return application's error information
-     */
-    YangAppErrorInfo getAppErrorInfo();
-
-}

-/*
- * 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.datamodel;
-
-import java.io.Serializable;
-
-/**
- * Represents data model to maintain yang app error information.
- */
-public class YangAppErrorInfo implements Serializable {
-
-    private static final long serialVersionUID = 807201693L;
-
-    /**
-     * Application's error message, to be used for data error.
-     */
-    private String errorMessage;
-
-    /**
-     * Error tag, to be filled in data validation error response.
-     */
-    private String errorTag;
-
-    /**
-     * Application's error tag, to be filled in data validation error response.
-     */
-    private String errorAppTag;
-
-    /**
-     * Application's error path, to be filled in data validation error response.
-     */
-    private String errorAppPath;
-
-    /**
-     * Application's error info, to be filled in data validation error response.
-     */
-    private String errorAppInfo;
-
-    /**
-     * Creates a YANG app error info object.
-     */
-    @SuppressWarnings("unused")
-    public YangAppErrorInfo() {
-    }
-
-    /**
-     * Returns application's error message, to be used for data error.
-     *
-     * @return Application's error message, to be used for data error
-     */
-    public String getGetErrorMessage() {
-        return errorMessage;
-    }
-
-    /**
-     * Sets Application's error message, to be used for data error.
-     *
-     * @param errMsg Application's error message, to be used for data error
-     */
-    public void setErrorMessage(String errMsg) {
-        errorMessage = errMsg;
-    }
-
-    /**
-     * Returns error tag, to be used for data error.
-     *
-     * @return error tag, to be used for data error
-     */
-    public String getGetErrorTag() {
-        return errorTag;
-    }
-
-    /**
-     * Sets error tag, to be used for data error.
-     *
-     * @param errTag error tag, to be used for data error
-     */
-    public void setErrorTag(String errTag) {
-        errorTag = errTag;
-    }
-
-    /**
-     * Returns application's error tag, to be used for data error.
-     *
-     * @return application's error tag, to be used for data error
-     */
-    public String getGetErrorAppTag() {
-        return errorAppTag;
-    }
-
-    /**
-     * Sets application's error tag, to be used for data error.
-     *
-     * @param errTag application's error tag, to be used for data error
-     */
-    public void setErrorAppTag(String errTag) {
-        errorAppTag = errTag;
-    }
-
-    /**
-     * Returns application's error path, to be used for data error.
-     *
-     * @return application's error path, to be used for data error
-     */
-    public String getGetErrorAppPath() {
-        return errorAppPath;
-    }
-
-    /**
-     * Sets application's error path, to be used for data error.
-     *
-     * @param errPath application's error path, to be used for data error
-     */
-    public void setErrorAppPath(String errPath) {
-        errorAppPath = errPath;
-    }
-
-    /**
-     * Returns application's error info, to be used for data error.
-     *
-     * @return application's error info, to be used for data error
-     */
-    public String getGetErrorAppInfo() {
-        return errorAppInfo;
-    }
-
-    /**
-     * Sets application's error info, to be used for data error.
-     *
-     * @param errInfo application's error info, to be used for data error
-     */
-    public void setErrorAppInfo(String errInfo) {
-        errorAppInfo = errInfo;
-    }
-}

-/*
- * 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.datamodel;
-
-import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.datamodel.utils.Parsable;
-import org.onosproject.yangutils.datamodel.utils.YangConstructType;
-
-/**
- * Represents data model node to maintain information defined in YANG extended name.
- */
-public class YangAppExtendedName implements Parsable {
-
-    /**
-     * App extended name information.
-     */
-    private String yangAppExtendedName;
-
-    /**
-     * Prefix of extended name.
-     */
-    private String prefix;
-
-    /**
-     * Returns the YANG app extended name information.
-     *
-     * @return the YANG app extended name information
-     */
-    public String getYangAppExtendedName() {
-        return yangAppExtendedName;
-    }
-
-    /**
-     * Sets the YANG app extended name information.
-     *
-     * @param yangAppExtendedName the YANG app extended name to set
-     */
-    public void setYangAppExtendedName(String yangAppExtendedName) {
-        this.yangAppExtendedName = yangAppExtendedName;
-    }
-
-    /**
-     * Returns the prefix.
-     *
-     * @return the prefix
-     */
-    public String getPrefix() {
-        return prefix;
-    }
-
-    /**
-     * Sets the prefix information.
-     *
-     * @param prefix the prefix to set
-     */
-    public void setPrefix(String prefix) {
-        this.prefix = prefix;
-    }
-
-    @Override
-    public YangConstructType getYangConstructType() {
-        return YangConstructType.APP_EXTENDED_NAME_DATA;
-    }
-
-    @Override
-    public void validateDataOnEntry() throws DataModelException {
-        // TODO : to be implemented
-    }
-
-    @Override
-    public void validateDataOnExit() throws DataModelException {
-        // TODO : to be implemented
-    }
-}

-/*
- * 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.datamodel;
-
-import java.io.Serializable;
-import java.util.List;
-
-/**
- * Representation of data model node to maintain absolute path defined in YANG path-arg.
- */
-public class YangAtomicPath implements Serializable {
-
-    private static final long serialVersionUID = 806201688L;
-
-    // YANG node identifier.
-    private YangNodeIdentifier nodeIdentifier;
-
-    // List of path predicates expression.
-    private List<YangPathPredicate> pathPredicatesList;
-
-    /**
-     * Resolved node for the absolute path.
-     */
-    private YangNode resolvedNode;
-
-    /**
-     * Returns the node identifier.
-     *
-     * @return the node identifier
-     */
-    public YangNodeIdentifier getNodeIdentifier() {
-        return nodeIdentifier;
-    }
-
-    /**
-     * Sets the node identifier.
-     *
-     * @param nodeIdentifier Sets the node identifier
-     */
-    public void setNodeIdentifier(YangNodeIdentifier nodeIdentifier) {
-        this.nodeIdentifier = nodeIdentifier;
-    }
-
-    /**
-     * Returns the path predicate expression.
-     *
-     * @return the path predicate expression
-     */
-    public List<YangPathPredicate> getPathPredicatesList() {
-        return pathPredicatesList;
-    }
-
-    /**
-     * Sets the path predicate expression.
-     *
-     * @param pathPredicatesList Sets the path predicate expression
-     */
-    public void setPathPredicatesList(List<YangPathPredicate> pathPredicatesList) {
-        this.pathPredicatesList = pathPredicatesList;
-    }
-
-    /**
-     * Adds predicate expression in data holder.
-     *
-     * @param predicatesExp the predicate expression to be added
-     */
-    public void addLeavesPredicate(YangPathPredicate predicatesExp) {
-        getPathPredicatesList().add(predicatesExp);
-    }
-
-
-    /**
-     * Returns resolved node.
-     *
-     * @return resolved node
-     */
-    public YangNode getResolvedNode() {
-        return resolvedNode;
-    }
-
-    /**
-     * Sets resolved node.
-     *
-     * @param resolvedNode resolved node
-     */
-    public void setResolvedNode(YangNode resolvedNode) {
-        this.resolvedNode = resolvedNode;
-    }
-}

-/*
- * 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.datamodel;
-
-import java.util.List;
-
-/**
- * Represents YANG constructs which can be augmented.
- */
-public interface YangAugmentableNode {
-
-    /**
-     * Adds augment info to the augment info list.
-     *
-     * @param augmentInfo augment info of node
-     */
-    void addAugmentation(YangAugmentedInfo augmentInfo);
-
-    /**
-     * Removes augment info from the node.
-     *
-     * @param augmentInfo augment info of node
-     */
-    void removeAugmentation(YangAugmentedInfo augmentInfo);
-
-    /**
-     * Returns list of augment info.
-     *
-     * @return list of augment info
-     */
-    List<YangAugmentedInfo> getAugmentedInfoList();
-}

-/*
- * 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.datamodel;
-
-/**
- * Abstraction of an entity which represents YANG augmented info.
- */
-public interface YangAugmentedInfo {
-}

-/*
- * 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.datamodel;
-
-/**
- * Abstraction of an entity which represent operation parameter info for augmentable node.
- */
-public interface YangAugmentedOpParamInfo extends YangAugmentedInfo {
-
-    /**
-     * Returns class object of base class.
-     *
-     * @return class object of base class
-     */
-    Class<?> getBaseClass();
-
-    /**
-     * Returns if augmented info's contents matches.
-     *
-     * @param augmentedInfo augmented info
-     * @return true or false
-     */
-    boolean isFilterContentMatch(Object augmentedInfo);
-}

-/*
- * 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.datamodel;
-
-import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.datamodel.utils.ResolvableStatus;
-
-import java.io.Serializable;
-
-/**
- * Reference RFC 6020.
- *
- * Represents data model node to maintain information defined in YANG base.
- *  The "base" statement, which is optional, takes as an argument a
- * string that is the name of an existing identity, from which the new
- * identity is derived.  If no "base" statement is present, the identity
- * is defined from scratch.
- *
- * If a prefix is present on the base name, it refers to an identity
- * defined in the module that was imported with that prefix, or the
- * local module if the prefix matches the local module's prefix.
- * Otherwise, an identity with the matching name MUST be defined in the
- * current module or an included submodule.
- */
-
-/**
- * Represents data model node to maintain information defined in YANG base.
- */
- public class YangBase implements Resolvable, Serializable {
-
-    private static final long serialVersionUID = 806201693L;
-
-    // YANG node identifier.
-    private YangNodeIdentifier baseIdentifier;
-
-    // Referred identity parent information.
-    private YangIdentity referredIdentity;
-
-     /**
-     * Status of resolution. If completely resolved enum value is "RESOLVED",
-     * if not enum value is "UNRESOLVED", in case reference of grouping/typedef/base/identityref
-     * is added to uses/type/base/identityref but it's not resolved value of enum should be
-     * "INTRA_FILE_RESOLVED".
-     */
-    private ResolvableStatus resolvableStatus;
-
-    // Creates a base type of node.
-    public YangBase() {
-        resolvableStatus = ResolvableStatus.UNRESOLVED;
-    }
-
-    /**
-     * Returns the YANG node identifier.
-     *
-     * @return the YANG node identifier
-     */
-    public YangNodeIdentifier getBaseIdentifier() {
-        return baseIdentifier;
-    }
-
-    /**
-     * Sets the YANG node identifier.
-     *
-     * @param baseIdentifier the YANG node identifier to set
-     */
-    public void setBaseIdentifier(YangNodeIdentifier baseIdentifier) {
-        this.baseIdentifier = baseIdentifier;
-    }
-
-    /**
-     * Returns the parent identity node.
-     *
-     * @return the parent identity node
-     */
-    public YangIdentity getReferredIdentity() {
-        return referredIdentity;
-    }
-
-    /**
-     * Sets the parent identity node.
-     *
-     * @param referredIdentity the parent identity node to set
-     */
-    public void setReferredIdentity(YangIdentity referredIdentity) {
-        this.referredIdentity = referredIdentity;
-    }
-
-    @Override
-    public ResolvableStatus getResolvableStatus() {
-        return resolvableStatus;
-    }
-
-    @Override
-    public void setResolvableStatus(ResolvableStatus resolvableStatus) {
-        this.resolvableStatus = resolvableStatus;
-    }
-
-    @Override
-    public Object resolve() throws DataModelException {
-        return null;
-    }
-}

-/*
- * 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.datamodel;
-
-import java.io.Serializable;
-import java.util.Set;
-
-import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.datamodel.utils.Parsable;
-import org.onosproject.yangutils.datamodel.utils.YangConstructType;
-
-import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.findReferredNode;
-
-/*-
- *   Reference 6020.
- *
- *  The "belongs-to" statement specifies the module to which the
- *  submodule belongs.  The argument is an identifier that is the name of
- *  the module.
- *
- *  A submodule MUST only be included by the module to which it belongs,
- *  or by another submodule that belongs to that module.
- *
- *  The mandatory "prefix" sub-statement assigns a prefix for the module
- *  to which the submodule belongs.  All definitions in the local
- *  submodule and any included submodules can be accessed by using the
- *  prefix.
- *
- *  The belongs-to's sub-statements
- *
- *                +--------------+---------+-------------+
- *                | substatement | section | cardinality |
- *                +--------------+---------+-------------+
- *                | prefix       | 7.1.4   | 1           |
- *                +--------------+---------+-------------+
- */
-
-/**
- * Represents the belongs-to data type information.
- */
-public class YangBelongsTo implements Parsable, LocationInfo, Serializable {
-
-    private static final long serialVersionUID = 806201639L;
-
-    /**
-     * Reference RFC 6020.
-     *
-     * The "belongs-to" statement specifies the module to which the submodule
-     * belongs. The argument is an identifier that is the name of the module.
-     */
-    private String belongsToModuleName;
-
-    /**
-     * Module node to which sub-module belongs to.
-     */
-    private YangNode moduleNode;
-
-    /**
-     * Reference RFC 6020.
-     *
-     * The mandatory "prefix" substatement assigns a prefix for the module to
-     * which the submodule belongs. All definitions in the local submodule and
-     * any included submodules can be accessed by using the prefix.
-     */
-    private String prefix;
-
-    // Error Line number.
-    private transient int lineNumber;
-
-    // Error character position.
-    private transient int charPosition;
-
-    /**
-     * Create a belongs to object.
-     */
-    public YangBelongsTo() {
-
-    }
-
-    /**
-     * Returns the belongs to module name.
-     *
-     * @return the belongs to module name
-     */
-    public String getBelongsToModuleName() {
-        return belongsToModuleName;
-    }
-
-    /**
-     * Sets the belongs to module name.
-     *
-     * @param belongsToModuleName the belongs to module name to set
-     */
-    public void setBelongsToModuleName(String belongsToModuleName) {
-        this.belongsToModuleName = belongsToModuleName;
-    }
-
-    /**
-     * Returns the prefix.
-     *
-     * @return the prefix
-     */
-    public String getPrefix() {
-        return prefix;
-    }
-
-    /**
-     * Sets the prefix.
-     *
-     * @param prefix the prefix to set
-     */
-    public void setPrefix(String prefix) {
-        this.prefix = prefix;
-    }
-
-    /**
-     * Returns the module data model node.
-     *
-     * @return the module data model node
-     */
-    public YangNode getModuleNode() {
-        return moduleNode;
-    }
-
-    /**
-     * Sets the module node.
-     *
-     * @param moduleNode module data model node
-     */
-    public void setModuleNode(YangNode moduleNode) {
-        this.moduleNode = moduleNode;
-    }
-
-    /**
-     * Returns the type of the data as belongs-to.
-     *
-     * @return ParsedDataType returns BELONGS_TO_DATA
-     */
-    @Override
-    public YangConstructType getYangConstructType() {
-        return YangConstructType.BELONGS_TO_DATA;
-    }
-
-    /**
-     * Validates the data on entering the corresponding parse tree node.
-     *
-     * @throws DataModelException a violation of data model rules
-     */
-    @Override
-    public void validateDataOnEntry() throws DataModelException {
-        // TODO auto-generated method stub, to be implemented by parser
-    }
-
-    /**
-     * Validates the data on exiting the corresponding parse tree node.
-     *
-     * @throws DataModelException a violation of data model rules
-     */
-    @Override
-    public void validateDataOnExit() throws DataModelException {
-        // TODO auto-generated method stub, to be implemented by parser
-    }
-
-    @Override
-    public int getLineNumber() {
-        return lineNumber;
-    }
-
-    @Override
-    public int getCharPosition() {
-        return charPosition;
-    }
-
-    @Override
-    public void setLineNumber(int lineNumber) {
-        this.lineNumber = lineNumber;
-    }
-
-    @Override
-    public void setCharPosition(int charPositionInLine) {
-        charPosition = charPositionInLine;
-    }
-
-    /**
-     * Links the belongs to with a module.
-     *
-     * @param yangNodeSet YANG file information set
-     * @throws DataModelException a violation in data model rule
-     */
-    public void linkWithModule(Set<YangNode> yangNodeSet)
-            throws DataModelException {
-        String belongsToModuleName = getBelongsToModuleName();
-        YangNode moduleNode = findReferredNode(yangNodeSet, belongsToModuleName);
-        if (moduleNode != null) {
-            if (moduleNode instanceof YangModule) {
-                setModuleNode(moduleNode);
-                return;
-            }
-        }
-        DataModelException exception = new DataModelException("YANG file error : Module " + belongsToModuleName +
-                "to which sub-module belongs to is not found.");
-        exception.setLine(getLineNumber());
-        exception.setCharPosition(getCharPosition());
-        throw exception;
-    }
-}

-/*
- * 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.datamodel;
-
-import java.io.Serializable;
-import java.util.Base64;
-
-import org.onosproject.yangutils.datamodel.utils.builtindatatype.YangBuiltInDataTypeInfo;
-import org.onosproject.yangutils.datamodel.utils.builtindatatype.YangDataTypes;
-
-/*
- * Reference RFC 6020.
- *
- * The binary built-in type represents any binary data,
- * i.e., a sequence of octets.
- */
-public class YangBinary implements YangBuiltInDataTypeInfo<YangBinary>, Serializable, Comparable<YangBinary> {
-
-    private static final long serialVersionUID = 2106201608L;
-
-    // Binary data is a decoded value by base64 decoding scheme from data input (jason)
-    private byte[] binaryData;
-
-    /**
-     * Creates a binary object corresponding to the base 64 encoding value.
-     *
-     * @param strValue base64 encoded value
-     */
-    public YangBinary(String strValue) {
-        setBinaryData(Base64.getDecoder().decode(strValue));
-    }
-
-    /**
-     * Retrieves decoded binary data.
-     *
-     * @return binary data
-     */
-    public byte[] getBinaryData() {
-        return binaryData;
-    }
-
-    /**
-     * Sets binary data.
-     *
-     * @param binaryData binary data
-     */
-    public void setBinaryData(byte[] binaryData) {
-        this.binaryData = binaryData;
-    }
-
-    /**
-     * Encodes binary data by base64 encoding scheme.
-     *
-     * @return encoded binary data
-     */
-    public String toString() {
-        return Base64.getEncoder()
-                     .encodeToString(binaryData);
-    }
-
-    @Override
-    public YangDataTypes getYangType() {
-        return YangDataTypes.BINARY;
-    }
-
-    @Override
-    public int compareTo(YangBinary o) {
-        for (int i = 0, j = 0; i < this.binaryData.length && j < o.binaryData.length; i++, j++) {
-            int a = (this.binaryData[i] & 0xff);
-            int b = (o.binaryData[j] & 0xff);
-            if (a != b) {
-                return a - b;
-            }
-        }
-        return this.binaryData.length - o.binaryData.length;
-    }
-}

-/*
- * 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.datamodel;
-
-import java.io.Serializable;
-import java.util.Objects;
-
-import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-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,
- *  MUST be present if the type is "bits".  It is repeatedly used to
- *  specify each assigned named bit of a bits type.  It takes as an
- *  argument a string that is the assigned name of the bit.  It is
- *  followed by a block of sub-statements that holds detailed bit
- *  information.
- *  All assigned names in a bits type MUST be unique.
- *
- *  The bit's sub-statements
- *
- *                +--------------+---------+-------------+------------------+
- *                | substatement | section | cardinality |data model mapping|
- *                +--------------+---------+-------------+------------------+
- *                | description  | 7.19.3  | 0..1        | - string         |
- *                | reference    | 7.19.4  | 0..1        | - string         |
- *                | status       | 7.19.2  | 0..1        | - YangStatus     |
- *                | position     | 9.7.4.2 | 0..1        | - int            |
- *                +--------------+---------+-------------+------------------+
- */
-
-/**
- * Represents the bit data type information.
- */
-public class YangBit implements YangCommonInfo, Parsable, Serializable {
-
-    private static final long serialVersionUID = 806201640L;
-
-    /**
-     * Name of the bit.
-     */
-    private String bitName;
-
-    /**
-     * Description of the bit field.
-     */
-    private String description;
-
-    /**
-     * Reference info of the bit field.
-     */
-    private String reference;
-
-    /**
-     * Status of the bit field.
-     */
-    private YangStatusType status;
-
-    /**
-     * Position of the bit whose name bit is described.
-     */
-    private int position;
-
-    /**
-     * Create a YANG bit type object.
-     */
-    public YangBit() {
-
-    }
-
-    /**
-     * Returns bit name.
-     *
-     * @return the bit name
-     */
-    public String getBitName() {
-        return bitName;
-    }
-
-    /**
-     * Sets the bit name.
-     *
-     * @param bitName the bit name to set
-     */
-    public void setBitName(String bitName) {
-        this.bitName = bitName;
-    }
-
-    /**
-     * Returns description.
-     *
-     * @return the description
-     */
-    @Override
-    public String getDescription() {
-        return description;
-    }
-
-    /**
-     * Sets the description.
-     *
-     * @param description set the description
-     */
-    @Override
-    public void setDescription(String description) {
-        this.description = description;
-    }
-
-    /**
-     * Returns textual reference.
-     *
-     * @return the reference
-     */
-    @Override
-    public String getReference() {
-        return reference;
-    }
-
-    /**
-     * Sets the textual reference.
-     *
-     * @param reference the reference to set
-     */
-    @Override
-    public void setReference(String reference) {
-        this.reference = reference;
-    }
-
-    /**
-     * Returns status.
-     *
-     * @return the status
-     */
-    @Override
-    public YangStatusType getStatus() {
-        return status;
-    }
-
-    /**
-     * Sets the status.
-     *
-     * @param status the status to set
-     */
-    @Override
-    public void setStatus(YangStatusType status) {
-        this.status = status;
-    }
-
-    /**
-     * Returns bit position.
-     *
-     * @return the position
-     */
-    public int getPosition() {
-        return position;
-    }
-
-    /**
-     * Sets the bit position.
-     *
-     * @param position the position to set
-     */
-    public void setPosition(int position) {
-        this.position = position;
-    }
-
-    /**
-     * Returns the type of the data.
-     *
-     * @return ParsedDataType returns BIT_DATA
-     */
-    @Override
-    public YangConstructType getYangConstructType() {
-        return YangConstructType.BIT_DATA;
-    }
-
-    @Override
-    public boolean equals(Object obj) {
-
-        if (this == obj) {
-            return true;
-        }
-        if (obj instanceof YangBit) {
-            final YangBit other = (YangBit) obj;
-            return Objects.equals(bitName, other.bitName);
-        }
-        return false;
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hashCode(bitName);
-    }
-
-    /**
-     * Validates the data on entering the corresponding parse tree node.
-     *
-     * @throws DataModelException a violation of data model rules
-     */
-    @Override
-    public void validateDataOnEntry() throws DataModelException {
-        // TODO auto-generated method stub, to be implemented by parser
-    }
-
-    /**
-     * Validates the data on exiting the corresponding parse tree node.
-     *
-     * @throws DataModelException a violation of data model rules
-     */
-    @Override
-    public void validateDataOnExit() throws DataModelException {
-        // TODO auto-generated method stub, to be implemented by parser
-    }
-}

-/*
- * 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.datamodel;
-
-import java.io.Serializable;
-import java.util.BitSet;
-import java.util.HashMap;
-import java.util.Map;
-import java.util.regex.Pattern;
-
-import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.datamodel.utils.Parsable;
-import org.onosproject.yangutils.datamodel.utils.YangConstructType;
-
-/*
- * Reference RFC 6020.
- *
- * The bits built-in type represents a bit set.  That is, a bits value
- * is a set of flags identified by small integer position numbers
- * starting at 0.  Each bit number has an assigned name.
- */
-
-/**
- * Represents the bits data type information.
- */
-public class YangBits implements Parsable, Serializable {
-
-    private static final long serialVersionUID = 806201641L;
-    private static final String SPACE = " ";
-
-    // Bits name
-    private String bitsName;
-    // Bits data contains bit-positions will be used to send to ONOS application
-    private BitSet bitDataSet;
-    /**
-     * Mapping bit name to YangBit. In data input (jason), only bit name will be received.
-     * By using the bit name corresponding (yang) bit-position will be retrieved from bitNameMap map.
-     */
-    private Map<String, YangBit> bitNameMap;
-    /**
-     * Mapping bit position to YangBit. The bit-position received from ONOS application
-     * will be converted into bit-name by using bitPositionMap map to send (jason) output data as response.
-     */
-    private Map<Integer, YangBit> bitPositionMap;
-
-    /**
-     * Creates a YANG bits type object.
-     */
-    public YangBits() {
-        bitDataSet = new BitSet();
-        setBitNameMap(new HashMap<>());
-        setBitPositionMap(new HashMap<>());
-    }
-
-    /**
-     * Returns the bits name.
-     *
-     * @return the bits name
-     */
-    public String getBitsName() {
-        return bitsName;
-    }
-
-    /**
-     * Sets the bits name.
-     *
-     * @param bitsName the bits name
-     */
-    public void setBitsName(String bitsName) {
-        this.bitsName = bitsName;
-    }
-
-    /**
-     * Returns the bit data set.
-     *
-     * @return the bit data set
-     */
-    public BitSet getBitDataSet() {
-        return bitDataSet;
-    }
-
-    /**
-     * Sets the bit data set.
-     *
-     * @param bitNames the set of bit names
-     * @throws DataModelException due to violation in data model rules
-     */
-    public void setBitDataSet(String[] bitNames) throws DataModelException {
-        YangBit bit;
-        for (String bitName : bitNames) {
-            bit = bitNameMap.get(bitName);
-            if (bit == null) {
-                throw new DataModelException("YANG file error: Unable to find " +
-                                                     "corresponding bit position for bit name: " + bitName);
-            }
-            bitDataSet.set(bit.getPosition());
-        }
-    }
-
-    /**
-     * Returns the bit name map.
-     *
-     * @return the bit name map
-     */
-    public Map<String, YangBit> getBitNameMap() {
-        return bitNameMap;
-    }
-
-    /**
-     * Sets the bit name map.
-     *
-     * @param bitNameMap the bit name map
-     */
-    public void setBitNameMap(Map<String, YangBit> bitNameMap) {
-        this.bitNameMap = bitNameMap;
-    }
-
-    /**
-     * Checks whether bit name already available.
-     *
-     * @param bitName bit name
-     * @return true if bit name already available otherwise returns false
-     */
-    public boolean isBitNameExists(String bitName) {
-        return bitNameMap.containsKey(bitName);
-    }
-
-    /**
-     * Returns the bit position map.
-     *
-     * @return the bit position map
-     */
-    public Map<Integer, YangBit> getBitPositionMap() {
-        return bitPositionMap;
-    }
-
-    /**
-     * Sets the bit position map.
-     *
-     * @param bitPositionMap the bit position map
-     */
-    public void setBitPositionMap(Map<Integer, YangBit> bitPositionMap) {
-        this.bitPositionMap = bitPositionMap;
-    }
-
-    /**
-     * Checks whether bit position already available.
-     *
-     * @param bitPosition bit position
-     * @return true if bit position already available otherwise returns false
-     */
-    public boolean isBitPositionExists(Integer bitPosition) {
-        return bitPositionMap.containsKey(bitPosition);
-    }
-
-    /**
-     * Adds bit info.
-     *
-     * @param bitInfo the bit information to be added
-     * @throws DataModelException due to violation in data model rules
-     */
-    public void addBitInfo(YangBit bitInfo) throws DataModelException {
-        if (bitNameMap.put(bitInfo.getBitName(), bitInfo) != null) {
-            throw new DataModelException("YANG file error: Duplicate bit name detected, same as bit name \""
-                                                 + bitInfo.getBitName() + "\"");
-        }
-        if (bitPositionMap.put(bitInfo.getPosition(), bitInfo) != null) {
-            throw new DataModelException("YANG file error: Duplicate bit position detected, same as bit position \""
-                    + bitInfo.getPosition() + "\"");
-        }
-    }
-
-    /**
-     * Returns the type of the data.
-     *
-     * @return ParsedDataType returns BITS_DATA
-     */
-    @Override
-    public YangConstructType getYangConstructType() {
-        return YangConstructType.BITS_DATA;
-    }
-
-    @Override
-    public String toString() {
-        YangBit bit;
-        String bits = new String();
-        for (int i = bitDataSet.nextSetBit(0); i >= 0; i = bitDataSet.nextSetBit(i + 1)) {
-            bit = bitPositionMap.get(i);
-            if (bit == null) {
-                return null;
-            }
-            if (bits.isEmpty()) {
-                bits =  bit.getBitName();
-            } else {
-                bits += " " + bit.getBitName();
-            }
-        }
-        return bits.trim();
-    }
-
-    /**
-     * Returns the object of YANG bits based on specific set of bit names.
-     *
-     * @param bits set of bit names
-     * @return Object of YANG bits
-     */
-    public YangBits fromString(String bits) {
-        try {
-            String[] bitNames = bits.trim().split(Pattern.quote(SPACE));
-            setBitDataSet(bitNames);
-            return this;
-        } catch (Exception e) {
-        }
-        return null;
-    }
-
-    /**
-     * Validates the data on entering the corresponding parse tree node.
-     *
-     * @throws DataModelException a violation of data model rules
-     */
-    @Override
-    public void validateDataOnEntry() throws DataModelException {
-        // TODO auto-generated method stub, to be implemented by parser
-    }
-
-    /**
-     * Validates the data on exiting the corresponding parse tree node.
-     *
-     * @throws DataModelException a violation of data model rules
-     */
-    @Override
-    public void validateDataOnExit() throws DataModelException {
-        // TODO auto-generated method stub, to be implemented by parser
-    }
-}

-/*
- * 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.datamodel;
-
-/**
- * Abstraction of YANG entity's common meta data. Abstracted to unify the
- * parsing and translator processing.
- */
-public interface YangCommonInfo extends YangDesc, YangReference, YangStatus {
-}

-/*
- * 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.datamodel;
-
-import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.datamodel.utils.Parsable;
-import org.onosproject.yangutils.datamodel.utils.YangConstructType;
-
-/**
- * Represents data model node to maintain information defined in YANG compiler-annotation.
- */
-public class YangCompilerAnnotation implements Parsable {
-
-    /**
-     * App data structure information.
-     */
-    private YangAppDataStructure yangAppDataStructure;
-
-    /**
-     * App extended name information.
-     */
-    private YangAppExtendedName yangAppExtendedName;
-
-    /**
-     * Prefix of compiler-annotation.
-     */
-    private String prefix;
-
-    /**
-     * Path of compiler-annotation.
-     */
-    private String path;
-
-    /**
-     * Returns the YANG app data structure information.
-     *
-     * @return the YANG app data structure information
-     */
-    public YangAppDataStructure getYangAppDataStructure() {
-        return yangAppDataStructure;
-    }
-
-    /**
-     * Sets the YANG app data structure information.
-     *
-     * @param yangAppDataStructure the YANG app data structure to set
-     */
-    public void setYangAppDataStructure(YangAppDataStructure yangAppDataStructure) {
-        this.yangAppDataStructure = yangAppDataStructure;
-    }
-
-    /**
-     * Returns the prefix.
-     *
-     * @return the prefix
-     */
-    public String getPrefix() {
-        return prefix;
-    }
-
-    /**
-     * Sets the prefix information.
-     *
-     * @param prefix the prefix to set
-     */
-    public void setPrefix(String prefix) {
-        this.prefix = prefix;
-    }
-
-    /**
-     * Returns the path.
-     *
-     * @return the path
-     */
-    public String getPath() {
-        return path;
-    }
-
-    /**
-     * Sets the path.
-     *
-     * @param path the path to set
-     */
-    public void setPath(String path) {
-        this.path = path;
-    }
-
-    /**
-     * Returns the YANG app extended name information.
-     *
-     * @return the YANG app extended name information
-     */
-    public YangAppExtendedName getYangAppExtendedName() {
-        return yangAppExtendedName;
-    }
-
-    /**
-     * Sets the YANG app extended name information.
-     *
-     * @param yangAppExtendedName the YANG app extended name to set
-     */
-    public void setYangAppExtendedName(YangAppExtendedName yangAppExtendedName) {
-        this.yangAppExtendedName = yangAppExtendedName;
-    }
-
-    @Override
-    public YangConstructType getYangConstructType() {
-        return YangConstructType.COMPILER_ANNOTATION_DATA;
-    }
-
-    @Override
-    public void validateDataOnEntry() throws DataModelException {
-        // TODO : to be implemented
-    }
-
-    @Override
-    public void validateDataOnExit() throws DataModelException {
-        // TODO : to be implemented
-    }
-}

-/*
- * 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.datamodel;
-
-/**
- * Abstraction of YANG data node, used by YMS to abstractly refer the data
- * nodes in YANG data tree.
- */
-public interface YangDataNode {
-}

-/*
- * 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.datamodel;
-
-/**
- * Represents ENUM to identify the YANG data type.
- */
-public enum YangDataStructure {
-
-    MAP,
-
-    LIST,
-
-    SET;
-
-    /**
-     * Returns YANG data structure type for corresponding data structure name.
-     *
-     * @param name data structure name from YANG file.
-     * @return YANG data structure for corresponding data structure name.
-     */
-    public static YangDataStructure getType(String name) {
-        name = name.replace("\"", "");
-        for (YangDataStructure dataStructure : values()) {
-            if (dataStructure.name().toLowerCase().equals(name)) {
-                return dataStructure;
-            }
-        }
-        return null;
-    }
-}

-/*
- * 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.datamodel;
-
-/**
- * Abstraction of textual description for a YANG entity. Abstracted to unify the
- * parsing and translator processing of description.
- */
-public interface YangDesc {
-
-    /**
-     * Returns the description of YANG entity.
-     *
-     * @return the description of YANG entity.
-     */
-    String getDescription();
-
-    /**
-     * Set the description of YANG entity.
-     *
-     * @param description set the description of YANG entity.
-     */
-    void setDescription(String description);
-}

-/*
- * 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.datamodel;
-
-/**
- * Abstraction of information about entity being resolved.
- *
- * @param <T> type of entity being resolved, uses / grouping
- */
-public interface YangEntityToResolveInfo<T> {
-
-    /**
-     * Retrieves the entity to be resolved.
-     *
-     * @return entity to be resolved
-     */
-    T getEntityToResolve();
-
-    /**
-     * Sets entity to be resolved.
-     *
-     * @param entityToResolve entity to be resolved
-     */
-    void setEntityToResolve(T entityToResolve);
-
-    /**
-     * Retrieves the parent node which contains the entity to be resolved.
-     *
-     * @return parent node which contains the entity to be resolved
-     */
-    YangNode getHolderOfEntityToResolve();
-
-    /**
-     * Sets parent node which contains the entity to be resolved.
-     *
-     * @param holderOfEntityToResolve parent node which contains the entity to
-     *                                be resolved
-     */
-    void setHolderOfEntityToResolve(YangNode holderOfEntityToResolve);
-}

-/*
- * 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.datamodel;
-
-import java.io.Serializable;
-
-/**
- * Represents implementation of information about entity being resolved.
- *
- * @param <T> type of entity being resolved, uses / grouping
- */
-public class YangEntityToResolveInfoImpl<T> implements YangEntityToResolveInfo<T>, Serializable, LocationInfo {
-
-    private static final long serialVersionUID = 806201659L;
-
-    /**
-     * Parsable node for which resolution is to be performed.
-     */
-    private T entityToResolve;
-
-    /**
-     * Holder of the YANG construct for which resolution has to be carried out.
-     */
-    private YangNode holderOfEntityToResolve;
-
-    /**
-     * Error line number.
-     */
-    private transient int lineNumber;
-
-    /**
-     * Error character position in number.
-     */
-    private transient int charPositionInLine;
-
-    @Override
-    public T getEntityToResolve() {
-        return entityToResolve;
-    }
-
-    @Override
-    public void setEntityToResolve(T entityToResolve) {
-        this.entityToResolve = entityToResolve;
-    }
-
-    @Override
-    public YangNode getHolderOfEntityToResolve() {
-        return holderOfEntityToResolve;
-    }
-
-    @Override
-    public void setHolderOfEntityToResolve(YangNode holderOfEntityToResolve) {
-        this.holderOfEntityToResolve = holderOfEntityToResolve;
-    }
-
-    @Override
-    public int getLineNumber() {
-        return lineNumber;
-    }
-
-    @Override
-    public int getCharPosition() {
-        return charPositionInLine;
-    }
-
-    @Override
-    public void setLineNumber(int lineNumber) {
-        this.lineNumber = lineNumber;
-    }
-
-    @Override
-    public void setCharPosition(int charPositionInLine) {
-        this.charPositionInLine = charPositionInLine;
-    }
-}

-/*
- * 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.datamodel;
-
-import java.io.Serializable;
-import java.util.Objects;
-
-import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-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"
- *  statement, MUST be present if the type is "enumeration".  It is
- *  repeatedly used to specify each assigned name of an enumeration type.
- *  It takes as an argument a string which is the assigned name.  The
- *  string MUST NOT be empty and MUST NOT have any leading or trailing
- *  whitespace characters.  The use of Unicode control codes SHOULD be
- *  avoided.
- *
- *  The statement is optionally followed by a block of sub-statements that
- *  holds detailed ENUM information.
- *  All assigned names in an enumeration MUST be unique.
- *
- *  The ENUM's sub-statements
- *
- *                +--------------+---------+-------------+------------------+
- *                | substatement | section | cardinality |data model mapping|
- *                +--------------+---------+-------------+------------------+
- *                | description  | 7.19.3  | 0..1        | - string         |
- *                | reference    | 7.19.4  | 0..1        | - string         |
- *                | status       | 7.19.2  | 0..1        | - YangStatus     |
- *                | value        | 9.6.4.2 | 0..1        | - int            |
- *                +--------------+---------+-------------+------------------+
- */
-
-/**
- * Represents the ENUM data type information.
- */
-public class YangEnum implements YangCommonInfo, Parsable, Comparable<YangEnum>, Serializable {
-
-    private static final long serialVersionUID = 806201643L;
-
-    /**
-     * Named value for the ENUM.
-     */
-    private String namedValue;
-
-    /**
-     * Description of the ENUM value.
-     */
-    private String description;
-
-    /**
-     * Reference info of the ENUM value.
-     */
-    private String reference;
-
-    /**
-     * Status of the ENUM value.
-     */
-    private YangStatusType status;
-
-    /**
-     * Value of ENUM.
-     */
-    private int value;
-
-    /**
-     * Create a YANG ENUM.
-     */
-    public YangEnum() {
-
-    }
-
-    /**
-     * Returns the named value.
-     *
-     * @return the named value
-     */
-    public String getNamedValue() {
-        return namedValue;
-    }
-
-    /**
-     * Sets the named value.
-     *
-     * @param namedValue the named value to set
-     */
-    public void setNamedValue(String namedValue) {
-        this.namedValue = namedValue;
-    }
-
-    /**
-     * Returns the description.
-     *
-     * @return the description
-     */
-    @Override
-    public String getDescription() {
-        return description;
-    }
-
-    /**
-     * Sets the description.
-     *
-     * @param description set the description
-     */
-    @Override
-    public void setDescription(String description) {
-        this.description = description;
-    }
-
-    /**
-     * Returns the textual reference.
-     *
-     * @return the reference
-     */
-    @Override
-    public String getReference() {
-        return reference;
-    }
-
-    /**
-     * Sets the textual reference.
-     *
-     * @param reference the reference to set
-     */
-    @Override
-    public void setReference(String reference) {
-        this.reference = reference;
-    }
-
-    /**
-     * Returns the status.
-     *
-     * @return the status
-     */
-    @Override
-    public YangStatusType getStatus() {
-        return status;
-    }
-
-    /**
-     * Sets the status.
-     *
-     * @param status the status to set
-     */
-    @Override
-    public void setStatus(YangStatusType status) {
-        this.status = status;
-    }
-
-    /**
-     * Returns the value.
-     *
-     * @return the value
-     */
-    public int getValue() {
-        return value;
-    }
-
-    /**
-     * Sets the value.
-     *
-     * @param value the value to set
-     */
-    public void setValue(int value) {
-        this.value = value;
-    }
-
-    /**
-     * Returns the type of the data.
-     *
-     * @return ParsedDataType returns ENUM_DATA
-     */
-    @Override
-    public YangConstructType getYangConstructType() {
-        return YangConstructType.ENUM_DATA;
-    }
-
-    @Override
-    public boolean equals(Object obj) {
-        if (this == obj) {
-            return true;
-        }
-        if (obj instanceof YangEnum) {
-            final YangEnum other = (YangEnum) obj;
-            return Objects.equals(namedValue, other.namedValue);
-        }
-        return false;
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hashCode(namedValue);
-    }
-
-    /**
-     * Validates the data on entering the corresponding parse tree node.
-     *
-     * @throws DataModelException a violation of data model rules
-     */
-    @Override
-    public void validateDataOnEntry() throws DataModelException {
-        // TODO auto-generated method stub, to be implemented by parser
-    }
-
-    /**
-     * Validates the data on exiting the corresponding parse tree node.
-     *
-     * @throws DataModelException a violation of data model rules
-     */
-    @Override
-    public void validateDataOnExit() throws DataModelException {
-        // TODO auto-generated method stub, to be implemented by parser
-    }
-
-    @Override
-    public int compareTo(YangEnum otherEnum) {
-        if (namedValue.equals(otherEnum.getNamedValue())) {
-            return 0;
-        }
-        return new Integer(value).compareTo(otherEnum.getValue());
-    }
-}

-/*
- * 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.datamodel;
-
-import java.util.SortedSet;
-import java.util.TreeSet;
-
-import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-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
- *  assigned names.
- */
-
-/**
- * Represents the enumeration data type information.
- */
-public class YangEnumeration
-        extends YangNode
-        implements Parsable, CollisionDetector {
-
-    private static final long serialVersionUID = 806201606L;
-
-    // Enumeration info set.
-    private SortedSet<YangEnum> enumSet;
-
-    // Enumeration name.
-    private String name;
-
-    /**
-     * Creates an enumeration object.
-     */
-    public YangEnumeration() {
-        super(YangNodeType.ENUMERATION_NODE);
-        setEnumSet(new TreeSet<YangEnum>());
-    }
-
-    /**
-     * Returns the ENUM set.
-     *
-     * @return the ENUM set
-     */
-    public SortedSet<YangEnum> getEnumSet() {
-        return enumSet;
-    }
-
-    /**
-     * Sets the ENUM set.
-     *
-     * @param enumSet the ENUM set to set
-     */
-    private void setEnumSet(SortedSet<YangEnum> enumSet) {
-        this.enumSet = enumSet;
-    }
-
-    /**
-     * Adds ENUM information.
-     *
-     * @param enumInfo the ENUM information to be added
-     * @throws DataModelException due to violation in data model rules
-     */
-    public void addEnumInfo(YangEnum enumInfo)
-            throws DataModelException {
-        if (!getEnumSet().add(enumInfo)) {
-            throw new DataModelException("YANG ENUM already exists");
-        }
-    }
-
-    /**
-     * Returns enumeration name.
-     *
-     * @return the enumeration name
-     */
-    @Override
-    public String getName() {
-        return name;
-    }
-
-    /**
-     * Sets the enumeration name.
-     *
-     * @param name enumeration name
-     */
-    @Override
-    public void setName(String name) {
-        this.name = name;
-    }
-
-    /**
-     * Returns the type of the data.
-     *
-     * @return returns ENUMERATION_DATA
-     */
-    @Override
-    public YangConstructType getYangConstructType() {
-        return YangConstructType.ENUMERATION_DATA;
-    }
-
-    /**
-     * Validates the data on entering the corresponding parse tree node.
-     *
-     * @throws DataModelException a violation of data model rules
-     */
-    @Override
-    public void validateDataOnEntry()
-            throws DataModelException {
-        // TODO auto-generated method stub, to be implemented by parser
-    }
-
-    /**
-     * Validates the data on exiting the corresponding parse tree node.
-     *
-     * @throws DataModelException a violation of data model rules
-     */
-    @Override
-    public void validateDataOnExit()
-            throws DataModelException {
-        // TODO auto-generated method stub, to be implemented by parser
-    }
-
-    @Override
-    public void detectCollidingChild(String identifierName, YangConstructType dataType)
-            throws DataModelException {
-        /*
-        Do nothing, since it is not part of the schema tree, it is only type of an existing node in schema tree.
-         */
-    }
-
-    @Override
-    public void detectSelfCollision(String identifierName, YangConstructType dataType)
-            throws DataModelException {
-        /*
-        Do nothing, since it is not part of the schema tree, it is only type of an existing node in schema tree.
-         */
-    }
-}

-/*
- * 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.datamodel;
-
-import java.io.Serializable;
-import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.datamodel.utils.Parsable;
-import org.onosproject.yangutils.datamodel.utils.YangConstructType;
-
-/*-
- * Reference RFC 6020.
- *
- * The "extension" statement allows the definition of new statements
- * within the YANG language.  This new statement definition can be
- * imported and used by other modules.
- *
- * The statement's argument is an identifier that is the new keyword for
- * the extension and must be followed by a block of sub-statements that
- * holds detailed extension information.  The purpose of the "extension"
- * statement is to define a keyword, so that it can be imported and used
- * by other modules.
- *
- * The extension can be used like a normal YANG statement, with the
- * statement name followed by an argument if one is defined by the
- * extension, and an optional block of sub-statements.  The statement's
- * name is created by combining the prefix of the module in which the
- * extension was defined, a colon (":"), and the extension's keyword,
- * with no interleaving whitespace.  The sub-statements of an extension
- * are defined by the extension, using some mechanism outside the scope
- * of this specification.  Syntactically, the sub-statements MUST be YANG
- * statements, or also defined using "extension" statements.
- *
- * The extension's Sub-statements
- *
- *                +--------------+---------+-------------+------------------+
- *                | substatement | section | cardinality |data model mapping|
- *                +--------------+---------+-------------+------------------+
- *                | description  | 7.19.3  | 0..1        | -string          |
- *                | reference    | 7.19.4  | 0..1        | -string          |
- *                | status       | 7.19.2  | 0..1        | -YangStatus      |
- *                | argument     | 7.17.2  | 0..1        | -string          |
- *                +--------------+---------+-------------+------------------+
- */
-
-/**
- * Represents data model node to maintain information defined in YANG extension.
- */
-public class YangExtension
-        implements YangCommonInfo, Serializable, Parsable {
-
-    private static final long serialVersionUID = 806201605L;
-
-    /**
-     * Name of the extension.
-     */
-    private String name;
-
-    /**
-     * Name of the argument.
-     */
-    private String argumentName;
-
-    /**
-     * Description of extension.
-     */
-    private String description;
-
-    /**
-     * Reference of the extension.
-     */
-    private String reference;
-
-    /**
-     * Status of the extension.
-     */
-    private YangStatusType status = YangStatusType.CURRENT;
-
-    /**
-     * Returns the YANG name of extension.
-     *
-     * @return the name of extension as defined in YANG file
-     */
-    public String getName() {
-        return name;
-    }
-
-    /**
-     * Sets the YANG name of extension.
-     *
-     * @param name the name of extension as defined in YANG file
-     */
-    public void setName(String name) {
-        this.name = name;
-    }
-
-    /**
-     * Returns the YANG argument name of extension.
-     *
-     * @return the name of argument as defined in YANG file
-     */
-    public String getArgumentName() {
-        return argumentName;
-    }
-
-    /**
-     * Sets the YANG argument name of extension.
-     *
-     * @param argumentName the name of argument as defined in YANG file
-     */
-    public void setArgumentName(String argumentName) {
-        this.argumentName = argumentName;
-    }
-
-    /**
-     * Returns the description.
-     *
-     * @return the description
-     */
-    @Override
-    public String getDescription() {
-        return description;
-    }
-
-    /**
-     * Sets the description.
-     *
-     * @param description set the description
-     */
-    @Override
-    public void setDescription(String description) {
-        this.description = description;
-    }
-
-    /**
-     * Returns the textual reference.
-     *
-     * @return the reference
-     */
-    @Override
-    public String getReference() {
-        return reference;
-    }
-
-    /**
-     * Sets the textual reference.
-     *
-     * @param reference the reference to set
-     */
-    @Override
-    public void setReference(String reference) {
-        this.reference = reference;
-    }
-
-    /**
-     * Returns the status.
-     *
-     * @return the status
-     */
-    @Override
-    public YangStatusType getStatus() {
-        return status;
-    }
-
-    /**
-     * Sets the status.
-     *
-     * @param status the status to set
-     */
-    @Override
-    public void setStatus(YangStatusType status) {
-        this.status = status;
-    }
-
-    /**
-     * Returns the type of the data.
-     *
-     * @return returns EXTENSION_DATA
-     */
-    @Override
-    public YangConstructType getYangConstructType() {
-        return YangConstructType.EXTENSION_DATA;
-    }
-
-    /**
-     * Validates the data on entering the corresponding parse tree node.
-     *
-     * @throws DataModelException a violation of data model rules
-     */
-    @Override
-    public void validateDataOnEntry()
-            throws DataModelException {
-        // TODO auto-generated method stub, to be implemented by parser
-    }
-
-    /**
-     * Validates the data on exiting the corresponding parse tree node.
-     *
-     * @throws DataModelException a violation of data model rules
-     */
-    @Override
-    public void validateDataOnExit()
-            throws DataModelException {
-        // TODO : to be implemented
-    }
-}

-/*
- * 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.datamodel;
-
-import java.io.Serializable;
-import java.util.LinkedList;
-import java.util.List;
-import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.datamodel.utils.Parsable;
-import org.onosproject.yangutils.datamodel.utils.YangConstructType;
-
-/*
- * Reference RFC 6020.
- *
- * The "feature" statement is used to define a mechanism by which
- * portions of the schema are marked as conditional.  A feature name is
- * defined that can later be referenced using the "if-feature" statement.
- * Schema nodes tagged with a feature are ignored by the device unless
- * the device supports the given feature.  This allows portions of the
- * YANG module to be conditional based on conditions on the device.
- * The model can represent the abilities of the device within the model,
- * giving a richer model that allows for differing device abilities and roles.
- *
- * The argument to the "feature" statement is the name of the new
- * feature, and follows the rules for identifiers.  This name is used by the
- * "if-feature" statement to tie the schema nodes to the feature.
- *
- * The feature's Substatements
- *
- *                +--------------+---------+-------------+------------------+
- *                | substatement | section | cardinality |data model mapping|
- *                +--------------+---------+-------------+------------------+
- *                | description  | 7.19.3  | 0..1        | -string          |
- *                | if-feature   | 7.18.2  | 0..n        | -YangIfFeature   |
- *                | reference    | 7.19.4  | 0..1        | -string          |
- *                | status       | 7.19.2  | 0..1        | -YangStatus      |
- *                +--------------+---------+-------------+------------------+
- */
-
-/**
- * Represents data model node to maintain information defined in YANG feature.
- */
-public class YangFeature implements YangCommonInfo, Parsable, YangIfFeatureHolder, Serializable {
-
-    private static final long serialVersionUID = 806201635L;
-
-    /**
-     * Name of the feature.
-     */
-    private String name;
-
-    /**
-     * Description of feature.
-     */
-    private String description;
-
-    /**
-     * Reference of the feature.
-     */
-    private String reference;
-
-    /**
-     * Status of feature.
-     */
-    private YangStatusType statusType;
-
-    /**
-     * List of if-feature.
-     */
-    private List<YangIfFeature> ifFeatureList;
-
-    @Override
-    public String getDescription() {
-        return description;
-    }
-
-    @Override
-    public void setDescription(String description) {
-        this.description = description;
-    }
-
-    @Override
-    public String getReference() {
-        return reference;
-    }
-
-    @Override
-    public void setReference(String reference) {
-        this.reference = reference;
-    }
-
-    @Override
-    public YangStatusType getStatus() {
-        return statusType;
-    }
-
-    @Override
-    public void setStatus(YangStatusType status) {
-        this.statusType = status;
-    }
-
-    public String getName() {
-        return name;
-    }
-
-    public void setName(String name) {
-        this.name = name;
-    }
-
-    @Override
-    public YangConstructType getYangConstructType() {
-        return YangConstructType.FEATURE_DATA;
-    }
-
-    @Override
-    public void validateDataOnEntry() throws DataModelException {
-        //TODO : To be implemented
-    }
-
-    @Override
-    public void validateDataOnExit() throws DataModelException {
-        //TODO : To be implemented
-    }
-
-    @Override
-    public List<YangIfFeature> getIfFeatureList() {
-        return ifFeatureList;
-    }
-
-    @Override
-    public void addIfFeatureList(YangIfFeature ifFeature) {
-        if (getIfFeatureList() == null) {
-            setIfFeatureList(new LinkedList<>());
-        }
-        getIfFeatureList().add(ifFeature);
-    }
-
-    @Override
-    public void setIfFeatureList(List<YangIfFeature> ifFeatureList) {
-        this.ifFeatureList = ifFeatureList;
-    }
-}

-/*Copyright 2016.year Open Networking Laboratory
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.*/
-
-package org.onosproject.yangutils.datamodel;
-
-import java.util.List;
-
-/**
- * Abstraction of feature entity. It is used to abstract the data holders of feature.
- */
-public interface YangFeatureHolder {
-
-    /**
-     * Returns the list of feature from data holder like container / list.
-     *
-     * @return the list of feature
-     */
-    List<YangFeature> getFeatureList();
-
-    /**
-     * Adds feature in feature list.
-     *
-     * @param feature the feature to be added
-     */
-    void addFeatureList(YangFeature feature);
-
-    /**
-     * Sets the list of feature.
-     *
-     * @param listOfFeature the list of feature to set
-     */
-    void setListOfFeature(List<YangFeature> listOfFeature);
-}

-/*
- * 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.datamodel;
-
-import java.util.LinkedList;
-import java.util.List;
-
-import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.datamodel.utils.Parsable;
-import org.onosproject.yangutils.datamodel.utils.YangConstructType;
-
-import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.detectCollidingChildUtil;
-
-/*-
- * Reference RFC 6020.
- *
- *  The "grouping" statement is used to define a reusable block of nodes,
- *  which may be used locally in the module, in modules that include it,
- *  and by other modules that import from it.  It takes one argument,
- *  which is an identifier, followed by a block of sub-statements that
- *  holds detailed grouping information.
- *
- *  The "grouping" statement is not a data definition statement and, as
- *  such, does not define any nodes in the schema tree.
- *
- *  A grouping is like a "structure" or a "record" in conventional
- *  programming languages.
- *  Once a grouping is defined, it can be referenced in a "uses"
- *  statement.  A grouping MUST NOT reference itself,
- *  neither directly nor indirectly through a chain of other groupings.
- *
- *  If the grouping is defined at the top level of a YANG module or
- *  submodule, the grouping's identifier MUST be unique within the
- *  module.
- *
- *  A grouping is more than just a mechanism for textual substitution,
- *  but defines a collection of nodes.  Identifiers appearing inside the
- *  grouping are resolved relative to the scope in which the grouping is
- *  defined, not where it is used.  Prefix mappings, type names, grouping
- *  names, and extension usage are evaluated in the hierarchy where the
- *  "grouping" statement appears.  For extensions, this means that
- *  extensions are applied to the grouping node, not the uses node.
- *
- *  The grouping's sub-statements
- *
- *                +--------------+---------+-------------+------------------+
- *                | substatement | section | cardinality |data model mapping|
- *                +--------------+---------+-------------+------------------+
- *                | anyxml       | 7.10    | 0..n        |-not supported    |
- *                | choice       | 7.9     | 0..n        |-child nodes      |
- *                | container    | 7.5     | 0..n        |-child nodes      |
- *                | description  | 7.19.3  | 0..1        |-string           |
- *                | grouping     | 7.11    | 0..n        |-child nodes      |
- *                | leaf         | 7.6     | 0..n        |-YangLeaf         |
- *                | leaf-list    | 7.7     | 0..n        |-YangLeafList     |
- *                | list         | 7.8     | 0..n        |-child nodes      |
- *                | reference    | 7.19.4  | 0..1        |-string           |
- *                | status       | 7.19.2  | 0..1        |-YangStatus       |
- *                | typedef      | 7.3     | 0..n        |-child nodes      |
- *                | uses         | 7.12    | 0..n        |-child nodes      |
- *                +--------------+---------+-------------+------------------+
- */
-
-/**
- * Represents data model node to maintain information defined in YANG grouping.
- */
-public class YangGrouping
-        extends YangNode
-        implements YangLeavesHolder, YangCommonInfo, Parsable, CollisionDetector, YangTranslatorOperatorNode {
-
-    private static final long serialVersionUID = 806201607L;
-
-    /**
-     * Name of the grouping.
-     */
-    private String name;
-
-    /**
-     * Description.
-     */
-    private String description;
-
-    /**
-     * List of leaves.
-     */
-    private List<YangLeaf> listOfLeaf;
-
-    /**
-     * List of leaf lists.
-     */
-    private List<YangLeafList> listOfLeafList;
-
-    /**
-     * Reference of the module.
-     */
-    private String reference;
-
-    /**
-     * Status of the node.
-     */
-    private YangStatusType status;
-
-    /**
-     * Creates the grouping node.
-     */
-    public YangGrouping() {
-        super(YangNodeType.GROUPING_NODE);
-        listOfLeaf = new LinkedList<YangLeaf>();
-        listOfLeafList = new LinkedList<YangLeafList>();
-    }
-
-    /**
-     * Returns YANG grouping name.
-     *
-     * @return YANG grouping name
-     */
-    @Override
-    public String getName() {
-        return name;
-    }
-
-    /**
-     * Sets YANG grouping name.
-     *
-     * @param name YANG grouping name
-     */
-    @Override
-    public void setName(String name) {
-        this.name = name;
-    }
-
-    /**
-     * Returns the description.
-     *
-     * @return the description
-     */
-    @Override
-    public String getDescription() {
-        return description;
-    }
-
-    /**
-     * Sets the description.
-     *
-     * @param description set the description
-     */
-    @Override
-    public void setDescription(String description) {
-        this.description = description;
-    }
-
-    /**
-     * Returns the list of leaves.
-     *
-     * @return the list of leaves
-     */
-    @Override
-    public List<YangLeaf> getListOfLeaf() {
-        return listOfLeaf;
-    }
-
-    /**
-     * Sets the list of leaves.
-     *
-     * @param leafsList the list of leaf to set
-     */
-    @Override
-    public void setListOfLeaf(List<YangLeaf> leafsList) {
-        listOfLeaf = leafsList;
-    }
-
-    /**
-     * Adds a leaf.
-     *
-     * @param leaf the leaf to be added
-     */
-    @Override
-    public void addLeaf(YangLeaf leaf) {
-        getListOfLeaf().add(leaf);
-    }
-
-    /**
-     * Returns the list of leaf-list.
-     *
-     * @return the list of leaf-list
-     */
-    @Override
-    public List<YangLeafList> getListOfLeafList() {
-        return listOfLeafList;
-    }
-
-    /**
-     * Sets the list of leaf-list.
-     *
-     * @param listOfLeafList the list of leaf-list to set
-     */
-    @Override
-    public void setListOfLeafList(List<YangLeafList> listOfLeafList) {
-        this.listOfLeafList = listOfLeafList;
-    }
-
-    /**
-     * Adds a leaf-list.
-     *
-     * @param leafList the leaf-list to be added
-     */
-    @Override
-    public void addLeafList(YangLeafList leafList) {
-        getListOfLeafList().add(leafList);
-    }
-
-    /**
-     * Returns the textual reference.
-     *
-     * @return the reference
-     */
-    @Override
-    public String getReference() {
-        return reference;
-    }
-
-    /**
-     * Sets the textual reference.
-     *
-     * @param reference the reference to set
-     */
-    @Override
-    public void setReference(String reference) {
-        this.reference = reference;
-    }
-
-    /**
-     * Returns the status.
-     *
-     * @return the status
-     */
-    @Override
-    public YangStatusType getStatus() {
-        return status;
-    }
-
-    /**
-     * Sets the status.
-     *
-     * @param status the status to set
-     */
-    @Override
-    public void setStatus(YangStatusType status) {
-        this.status = status;
-    }
-
-    /**
-     * Returns the type of the data.
-     *
-     * @return returns GROUPING_DATA
-     */
-    @Override
-    public YangConstructType getYangConstructType() {
-        return YangConstructType.GROUPING_DATA;
-    }
-
-    /**
-     * Validates the data on entering the corresponding parse tree node.
-     *
-     * @throws DataModelException a violation of data model rules
-     */
-    @Override
-    public void validateDataOnEntry()
-            throws DataModelException {
-        // TODO auto-generated method stub, to be implemented by parser
-    }
-
-    /**
-     * Validates the data on exiting the corresponding parse tree node.
-     *
-     * @throws DataModelException a violation of data model rules
-     */
-    @Override
-    public void validateDataOnExit()
-            throws DataModelException {
-        // TODO auto-generated method stub, to be implemented by parser
-    }
-
-    /*
-     * Reference RFC6020
-     *
-     * Once a grouping is defined, it can be referenced in a "uses"
-     * statement (see Section 7.12).  A grouping MUST NOT reference itself,
-     * neither directly nor indirectly through a chain of other groupings.
-     *
-     * If the grouping is defined at the top level of a YANG module or
-     * submodule, the grouping's identifier MUST be unique within the
-     * module.
-     */
-    @Override
-    public void detectCollidingChild(String identifierName, YangConstructType dataType)
-            throws DataModelException {
-        // Asks helper to detect colliding child.
-        detectCollidingChildUtil(identifierName, dataType, this);
-    }
-
-    @Override
-    public void detectSelfCollision(String identifierName, YangConstructType dataType)
-            throws DataModelException {
-        if (getName().equals(identifierName)) {
-            throw new DataModelException("YANG file error: Duplicate input identifier detected, same as grouping \"" +
-                    getName() + "\"");
-        }
-    }
-    // TODO  A grouping MUST NOT reference itself, neither directly nor indirectly through a chain of other groupings.
-}

-/*
- * 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.datamodel;
-
-import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.datamodel.utils.Parsable;
-import org.onosproject.yangutils.datamodel.utils.YangConstructType;
-
-import java.io.Serializable;
-
-/*-
- * Reference RFC 6020.
- *
- *  The "identity" statement is used to define a new globally unique,
- *  abstract, and untyped identity.  Its only purpose is to denote its
- *  name, semantics, and existence.  An identity can either be defined
- *  from scratch or derived from a base identity.  The identity's
- *  argument is an identifier that is the name of the identity.  It is
- *  followed by a block of substatements that holds detailed identity
- *  information.
- *
- *  The identity's Substatements
- *
- *                +--------------+---------+-------------+-----------------------+
- *                | substatement | section | cardinality |  data model mapping   |
- *                +--------------+---------+-------------+-----------------------+
- *                | base         | 7.16.2  | 0..1        |  -YangNodeIdentifier  |
- *                | description  | 7.19.3  | 0..1        |  -string              |
- *                | reference    | 7.19.4  | 0..1        |  -string              |
- *                | status       | 7.19.2  | 0..1        |  -YangStatus          |
- *                +--------------+---------+-------------+-----------------------+
- */
-
-/**
- * Represents data model node to maintain information defined in YANG identity.
- */
-public class YangIdentity extends YangNode implements YangCommonInfo, Parsable, Serializable {
-
-    private static final long serialVersionUID = 806201691L;
-
-    //Name of the identity.
-    private String name;
-
-    //Base node of identity.
-    private YangBase baseNode;
-
-    //Status of YANG identity.
-    private YangStatusType status;
-
-    //Description of YANG identity.
-    private String description;
-
-    //YANG reference of the identity.
-    private String reference;
-
-    //Creates a identity type of node.
-    public YangIdentity() {
-        super(YangNodeType.IDENTITY_NODE);
-    }
-
-    /**
-     * Returns the name of identity.
-     *
-     * @return the identity name
-     */
-    public String getName() {
-        return name;
-    }
-
-    /**
-     * Sets the name of identity.
-     *
-     * @param name the identity name to set
-     */
-    public void setName(String name) {
-        this.name = name;
-    }
-
-    @Override
-    public YangStatusType getStatus() {
-        return status;
-    }
-
-    @Override
-    public void setStatus(YangStatusType status) {
-        this.status = status;
-    }
-
-    @Override
-    public String getDescription() {
-        return description;
-    }
-
-    @Override
-    public void setDescription(String description) {
-        this.description = description;
-    }
-
-    @Override
-    public String getReference() {
-        return reference;
-    }
-
-    @Override
-    public void setReference(String reference) {
-        this.reference = reference;
-    }
-
-    @Override
-    public YangConstructType getYangConstructType() {
-        return YangConstructType.IDENTITY_DATA;
-    }
-
-    @Override
-    public void validateDataOnEntry() throws DataModelException {
-    }
-
-    @Override
-    public void validateDataOnExit() throws DataModelException {
-    }
-
-    /**
-     * Returns base node of identity.
-     *
-     * @return the base node of identity
-     */
-    public YangBase getBaseNode() {
-        return baseNode;
-    }
-
-    /**
-     * Sets the base node.
-     *
-     * @param baseNode the base node to set
-     */
-    public void setBaseNode(YangBase baseNode) {
-        this.baseNode = baseNode;
-    }
-}

-/*
- * 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.datamodel;
-
-import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.datamodel.utils.Parsable;
-import org.onosproject.yangutils.datamodel.utils.ResolvableStatus;
-import org.onosproject.yangutils.datamodel.utils.YangConstructType;
-
-import java.io.Serializable;
-
-/*-
- * Reference RFC 6020.
- *
- * The identityref type is used to reference an existing identity.
- *
- *  The identityref's base Statement :
- *       The "base" statement, which is a substatement to the "type"
- *  statement, MUST be present if the type is "identityref".  The
- *  argument is the name of an identity, as defined by an "identity"
- *  statement.  If a prefix is present on the identity name, it refers to
- *  an identity defined in the module that was imported with that prefix.
- *  Otherwise, an identity with the matching name MUST be defined in the
- *  current module or an included submodule.
- *  Valid values for an identityref are any identities derived from the
- *  identityref's base identity.  On a particular server, the valid
- *  values are further restricted to the set of identities defined in the
- *  modules supported by the server.
- */
-
-/**
- * Represents data model node to maintain information defined in YANG identityref.
- */
-public class YangIdentityRef extends YangNode implements Parsable, Resolvable, Serializable {
-
-    private static final long serialVersionUID = 806201692L;
-
-    // Get referred identity parent information.
-    private YangIdentity referredIdentity;
-
-    // YANG node identifier.
-    private YangNodeIdentifier baseIdentity;
-
-    /**
-     * Status of resolution. If completely resolved enum value is "RESOLVED",
-     * if not enum value is "UNRESOLVED", in case reference of grouping/typedef/identityref/base
-     * is added to uses/type/identityref/base but it's not resolved value of enum should be
-     * "INTRA_FILE_RESOLVED".
-     */
-    private ResolvableStatus resolvableStatus;
-
-    // Creates a specific identityref of node.
-    public YangIdentityRef() {
-        super(YangNodeType.IDENTITYREF_NODE);
-        baseIdentity = new YangNodeIdentifier();
-        resolvableStatus = ResolvableStatus.UNRESOLVED;
-    }
-
-    @Override
-    public ResolvableStatus getResolvableStatus() {
-        return resolvableStatus;
-    }
-
-    @Override
-    public void setResolvableStatus(ResolvableStatus resolvableStatus) {
-        this.resolvableStatus = resolvableStatus;
-    }
-
-    @Override
-    public Object resolve() throws DataModelException {
-
-        // Check if the derived info is present.
-        YangIdentity identity = getReferredIdentity();
-
-        if (identity == null) {
-            throw new DataModelException("Linker Error: Identity information is missing.");
-        }
-
-        while (identity.getBaseNode() != null) {
-            if (identity.getBaseNode().getResolvableStatus() != ResolvableStatus.RESOLVED) {
-                setResolvableStatus(ResolvableStatus.INTRA_FILE_RESOLVED);
-                return null;
-            }
-            identity = identity.getBaseNode().getReferredIdentity();
-        }
-        return null;
-    }
-
-    /**
-     * Returns the YANG base node identifier.
-     *
-     * @return the YANG base node identifier
-     */
-    public YangNodeIdentifier getBaseIdentity() {
-        return baseIdentity;
-    }
-
-    /**
-     * Sets the YANG node identifier.
-     *
-     * @param baseIdentity the YANG node identifier to set
-     */
-    public void setBaseIdentity(YangNodeIdentifier baseIdentity) {
-        this.baseIdentity = baseIdentity;
-    }
-
-    /**
-     * Returns the name of identity.
-     *
-     * @return the identity name
-     */
-    @Override
-    public String getName() {
-        return baseIdentity.getName();
-    }
-
-    /**
-     * Sets the name of identity.
-     *
-     * @param name the identity name to set
-     */
-    @Override
-    public void setName(String name) {
-        baseIdentity.setName(name);
-    }
-
-    /**
-     * Sets node identifier.
-     *
-     * @param nodeIdentifier the node identifier
-     */
-    public void setNodeIdentifier(YangNodeIdentifier nodeIdentifier) {
-        this.baseIdentity = nodeIdentifier;
-    }
-
-    /**
-     * Returns prefix associated with base.
-     *
-     * @return prefix associated with base
-     */
-    public String getPrefix() {
-        return baseIdentity.getPrefix();
-    }
-
-    /**
-     * Sets prefix associated with base.
-     *
-     * @param prefix prefix associated with base
-     */
-    public void setPrefix(String prefix) {
-        baseIdentity.setPrefix(prefix);
-    }
-
-    @Override
-    public YangConstructType getYangConstructType() {
-        return YangConstructType.IDENTITYREF_DATA;
-    }
-
-    @Override
-    public void validateDataOnEntry() throws DataModelException {
-    }
-
-    @Override
-    public void validateDataOnExit() throws DataModelException {
-    }
-
-    /**
-     * Returns the parent identity node.
-     *
-     * @return the parent identity node
-     */
-    public YangIdentity getReferredIdentity() {
-        return referredIdentity;
-    }
-
-    /**
-     * Sets the parent identity node.
-     *
-     * @param referredIdentity the parent identity node to set
-     */
-    public void setReferredIdentity(YangIdentity referredIdentity) {
-        this.referredIdentity = referredIdentity;
-    }
-}

-/*
- * 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.datamodel;
-
-import java.io.Serializable;
-import java.util.Iterator;
-import java.util.List;
-import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.datamodel.utils.Parsable;
-import org.onosproject.yangutils.datamodel.utils.ResolvableStatus;
-import org.onosproject.yangutils.datamodel.utils.YangConstructType;
-
-/*
- * Reference RFC 6020.
- *
- *  The "if-feature" statement makes its parent statement conditional.
- *  The argument is the name of a feature, as defined by a "feature"
- *  statement.  The parent statement is implemented by servers that
- *  support this feature.  If a prefix is present on the feature name, it
- *  refers to a feature defined in the module that was imported with that
- *  prefix, or the local module if the prefix matches the local module's
- *  prefix.  Otherwise, a feature with the matching name MUST be defined
- *  in the current module or an included submodule.
- *
- *  Since submodules cannot include the parent module, any features in
- *  the module that need to be exposed to submodules MUST be defined in a
- *  submodule.  Submodules can then include this submodule to find the
- *  definition of the feature.
- */
-
-/**
- * Represents data model node to maintain information defined in YANG if-feature.
- */
-public class YangIfFeature implements Parsable, Resolvable, Serializable {
-
-    private static final long serialVersionUID = 806201635L;
-
-    /**
-     * if-feature argument.
-     */
-    YangNodeIdentifier name;
-
-    /**
-     * Referred feature information.
-     */
-    YangFeature referredFeature;
-
-    /**
-     * Referred feature parent information.
-     */
-    YangNode referredFeatureHolder;
-
-    /**
-     * Status of resolution. If completely resolved enum value is "RESOLVED",
-     * if not enum value is "UNRESOLVED", in case reference of grouping/typedef
-     * is added to uses/type but it's not resolved value of enum should be
-     * "INTRA_FILE_RESOLVED".
-     */
-    private ResolvableStatus resolvableStatus;
-
-    /**
-     * Returns referred feature holder.
-     *
-     * @return referred feature holder
-     */
-    public YangNode getReferredFeatureHolder() {
-        return referredFeatureHolder;
-    }
-
-    /**
-     * Sets the referred feature holder.
-     *
-     * @param referredFeatureHolder referred feature holder
-     */
-    public void setReferredFeatureHolder(YangNode referredFeatureHolder) {
-        this.referredFeatureHolder = referredFeatureHolder;
-    }
-
-    /**
-     * Returns prefix associated with identifier.
-     *
-     * @return prefix associated with identifier
-     */
-    public String getPrefix() {
-        return name.getPrefix();
-    }
-
-    /**
-     * Sets prefix associated with identifier.
-     *
-     * @param prefix prefix associated with identifier
-     */
-    public void setPrefix(String prefix) {
-        name.setPrefix(prefix);
-    }
-
-    /**
-     * Returns referred feature associated with if-feature.
-     *
-     * @return referred feature associated with if-feature
-     */
-    public YangFeature getReferredFeature() {
-        return referredFeature;
-    }
-
-    /**
-     * Sets referred feature associated with if-feature.
-     *
-     * @param referredFeature referred feature associated with if-feature
-     */
-    public void setReferredFeature(YangFeature referredFeature) {
-        this.referredFeature = referredFeature;
-    }
-
-    /**
-     * Returns the YANG name of if-feature.
-     *
-     * @return the name of if-feature as defined in YANG file
-     */
-    public YangNodeIdentifier getName() {
-        return name;
-    }
-
-    /**
-     * Sets the YANG name of if-feature.
-     *
-     * @param name the name of if-feature as defined in YANG file
-     */
-    public void setName(YangNodeIdentifier name) {
-        this.name = name;
-    }
-
-    @Override
-    public YangConstructType getYangConstructType() {
-        return YangConstructType.IF_FEATURE_DATA;
-    }
-
-    @Override
-    public void validateDataOnEntry() throws DataModelException {
-        // do nothing, no validation required for if-feature
-    }
-
-    @Override
-    public void validateDataOnExit() throws DataModelException {
-        // do nothing, no validation required for if-feature
-    }
-
-    @Override
-    public ResolvableStatus getResolvableStatus() {
-        return resolvableStatus;
-    }
-
-    @Override
-    public void setResolvableStatus(ResolvableStatus resolvableStatus) {
-        this.resolvableStatus = resolvableStatus;
-    }
-
-    @Override
-    public Object resolve() throws DataModelException {
-        YangFeature feature = getReferredFeature();
-
-        // check whether feature has if-feature
-        List<YangIfFeature> ifFeatureList = feature.getIfFeatureList();
-        if (ifFeatureList != null && !ifFeatureList.isEmpty()) {
-            Iterator<YangIfFeature> ifFeatureIterator = ifFeatureList.iterator();
-            while (ifFeatureIterator.hasNext()) {
-                YangIfFeature ifFeature = ifFeatureIterator.next();
-                if (ifFeature.getResolvableStatus() != ResolvableStatus.RESOLVED) {
-                    setResolvableStatus(ResolvableStatus.INTRA_FILE_RESOLVED);
-                    return null;
-                }
-            }
-        }
-        return null;
-    }
-}

-/*Copyright 2016.year Open Networking Laboratory
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.*/
-
-package org.onosproject.yangutils.datamodel;
-
-import java.util.List;
-
-/**
- * Abstraction of if-feature entity. It is used to abstract the data holders of if-feature.
- */
-public interface YangIfFeatureHolder {
-
-    /**
-     * Returns the list of if-feature from data holder like container / list.
-     *
-     * @return the list of if-feature
-     */
-    List<YangIfFeature> getIfFeatureList();
-
-    /**
-     * Adds if-feature in if-feature list.
-     *
-     * @param ifFeature the if-feature to be added
-     */
-    void addIfFeatureList(YangIfFeature ifFeature);
-
-    /**
-     * Sets the list of if-feature.
-     *
-     * @param ifFeatureList the list of if-feature to set
-     */
-    void setIfFeatureList(List<YangIfFeature> ifFeatureList);
-}

-/*
- * 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.datamodel;
-
-import java.io.Serializable;
-import java.util.Date;
-import java.util.Set;
-
-import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.datamodel.utils.Parsable;
-import org.onosproject.yangutils.datamodel.utils.YangConstructType;
-
-import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.findReferredNode;
-
-/*
- *  Reference:RFC 6020.
- *  The "import" statement makes definitions from one module available
- *  inside another module or submodule.  The argument is the name of the
- *  module to import, and the statement is followed by a block of
- *  sub statements that holds detailed import information.
- *  When a module is imported, the importing module may:
- *  o  use any grouping and typedef defined at the top level in the
- *     imported module or its submodules.
- *
- *  o  use any extension, feature, and identity defined in the imported
- *     module or its submodules.
- *
- *  o  use any node in the imported module's schema tree in "must",
- *     "path", and "when" statements, or as the target node in "augment"
- *     and "deviation" statements.
- *
- *  The mandatory "prefix" sub statement assigns a prefix for the imported
- *  module that is scoped to the importing module or submodule.  Multiple
- *  "import" statements may be specified to import from different
- *  modules.
- *  When the optional "revision-date" sub-statement is present, any
- *  typedef, grouping, extension, feature, and identity referenced by
- *  definitions in the local module are taken from the specified revision
- *  of the imported module.  It is an error if the specified revision of
- *  the imported module does not exist.  If no "revision-date"
- *  sub-statement is present, it is undefined from which revision of the
- *  module they are taken.
- *
- *  Multiple revisions of the same module MUST NOT be imported.
- *
- *                       The import's Substatements
- *
- *                +---------------+---------+-------------+------------------+
- *                | substatement  | section | cardinality |data model mapping|
- *                +---------------+---------+-------------+------------------+
- *                | prefix        | 7.1.4   | 1           | string           |
- *                | revision-date | 7.1.5.1 | 0..1        | Date             |
- *                +---------------+---------+-------------+------------------+
- */
-
-/**
- * Represents the information about the imported modules.
- */
-public class YangImport
-        implements Parsable, LocationInfo, Serializable {
-
-    private static final long serialVersionUID = 806201642L;
-
-    /**
-     * Name of the module that is being imported.
-     */
-    private String name;
-
-    /**
-     * Prefix used to identify the entities from the imported module.
-     */
-    private String prefixId;
-
-    /**
-     * Reference:RFC 6020.
-     * <p>
-     * The import's "revision-date" statement is used to specify the exact
-     * version of the module to import. The "revision-date" statement MUST match
-     * the most recent "revision" statement in the imported module. organization
-     * which defined the YANG module.
-     */
-    private Date revision;
-
-    /**
-     * Reference to node which is imported.
-     */
-    private YangNode importedNode;
-
-    // Error Line number.
-    private transient int lineNumber;
-
-    // Error character position.
-    private transient int charPosition;
-
-    /**
-     * Creates a YANG import.
-     */
-    public YangImport() {
-    }
-
-    /**
-     * Returns the imported module name.
-     *
-     * @return the module name
-     */
-    public String getModuleName() {
-        return name;
-    }
-
-    /**
-     * Sets module name.
-     *
-     * @param moduleName the module name to set
-     */
-    public void setModuleName(String moduleName) {
-        name = moduleName;
-    }
-
-    /**
-     * Returns the prefix used to identify the entities from the imported module.
-     *
-     * @return the prefix used to identify the entities from the imported
-     * module
-     */
-    public String getPrefixId() {
-        return prefixId;
-    }
-
-    /**
-     * Sets prefix identifier.
-     *
-     * @param prefixId set the prefix identifier of the imported module
-     */
-    public void setPrefixId(String prefixId) {
-        this.prefixId = prefixId;
-    }
-
-    /**
-     * Returns the revision of the imported module.
-     *
-     * @return the revision of the imported module
-     */
-    public Date getRevision() {
-        return revision;
-    }
-
-    /**
-     * Sets the revision of the imported module.
-     *
-     * @param rev set the revision of the imported module
-     */
-    public void setRevision(Date rev) {
-        revision = rev;
-    }
-
-    /**
-     * Returns the type of the parsed data.
-     *
-     * @return returns IMPORT_DATA
-     */
-    @Override
-    public YangConstructType getYangConstructType() {
-        return YangConstructType.IMPORT_DATA;
-    }
-
-    /**
-     * Validates the data on entering the corresponding parse tree node.
-     *
-     * @throws DataModelException a violation of data model rules
-     */
-    @Override
-    public void validateDataOnEntry()
-            throws DataModelException {
-        // TODO auto-generated method stub, to be implemented by parser
-
-    }
-
-    /**
-     * Validates the data on exiting the corresponding parse tree node.
-     *
-     * @throws DataModelException a violation of data model rules
-     */
-    @Override
-    public void validateDataOnExit()
-            throws DataModelException {
-        // TODO auto-generated method stub, to be implemented by parser
-
-    }
-
-    /**
-     * Returns imported node.
-     *
-     * @return imported node
-     */
-    public YangNode getImportedNode() {
-        return importedNode;
-    }
-
-    /**
-     * Sets imported node.
-     *
-     * @param importedNode imported node
-     */
-    public void setImportedNode(YangNode importedNode) {
-        this.importedNode = importedNode;
-    }
-
-    @Override
-    public int getLineNumber() {
-        return lineNumber;
-    }
-
-    @Override
-    public int getCharPosition() {
-        return charPosition;
-    }
-
-    @Override
-    public void setLineNumber(int lineNumber) {
-        this.lineNumber = lineNumber;
-    }
-
-    @Override
-    public void setCharPosition(int charPositionInLine) {
-        charPosition = charPositionInLine;
-    }
-
-    /**
-     * Adds reference to an import.
-     *
-     * @param yangNodeSet YANG file info set
-     * @throws DataModelException a violation of data model rules
-     */
-    public void addReferenceToImport(Set<YangNode> yangNodeSet) throws DataModelException {
-        String importedModuleName = getModuleName();
-        Date importedModuleRevision = getRevision();
-        YangNode moduleNode = 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;
-            moduleNode = findReferredNode(yangNodeSet, importedModuleNameWithRevision);
-        }
-
-        /*
-         * 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);
-        }
-
-        if (moduleNode != null) {
-            if (moduleNode instanceof YangModule) {
-                if (getRevision() == null) {
-                    setImportedNode(moduleNode);
-                    return;
-                }
-                // Match revision if import is with revision.
-                if (((YangModule) moduleNode).getRevision().getRevDate().equals(importedModuleRevision)) {
-                    setImportedNode(moduleNode);
-                    return;
-                }
-            }
-        }
-
-        // Exception if there is no match.
-        DataModelException exception = new DataModelException("YANG file error : Imported module "
-                + importedModuleName + " with revision " + importedModuleRevision + " is not found.");
-        exception.setLine(getLineNumber());
-        exception.setCharPosition(getCharPosition());
-        throw exception;
-    }
-}

-/*
- * 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.datamodel;
-
-import java.io.Serializable;
-import java.util.Date;
-import java.util.Set;
-
-import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.datamodel.utils.Parsable;
-import org.onosproject.yangutils.datamodel.utils.YangConstructType;
-
-import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.findReferredNode;
-
-/*
- * Reference:RFC 6020.
- * The "include" statement is used to make content from a submodule
- *  available to that submodule's parent module, or to another submodule
- *  of that parent module.  The argument is an identifier that is the
- *  name of the submodule to include.
- *  The includes's Substatements
- *
- *                +---------------+---------+-------------+------------------+
- *                | substatement  | section | cardinality |data model mapping|
- *                +---------------+---------+-------------+------------------+
- *                | revision-date | 7.1.5.1 | 0..1        | string           |
- *                +---------------+---------+-------------+------------------+
- */
-
-/**
- * Represents the information about the included sub-modules.
- */
-public class YangInclude
-        implements Parsable, LocationInfo, Serializable {
-
-    private static final long serialVersionUID = 806201644L;
-
-    /**
-     * Name of the sub-module that is being included.
-     */
-    private String subModuleName;
-
-    /**
-     * The include's "revision-date" statement is used to specify the exact
-     * version of the submodule to import.
-     */
-    private Date revision;
-
-    /**
-     * Reference to node which is included.
-     */
-    private YangNode includedNode;
-
-    // Error Line number.
-    private transient int lineNumber;
-
-    // Error character position.
-    private transient int charPosition;
-
-    /**
-     * Creates a YANG include.
-     */
-    public YangInclude() {
-    }
-
-    /**
-     * Returns the name of included sub-module.
-     *
-     * @return the sub-module name
-     */
-    public String getSubModuleName() {
-        return subModuleName;
-    }
-
-    /**
-     * Sets the name of included sub-modules.
-     *
-     * @param subModuleName the sub-module name to set
-     */
-    public void setSubModuleName(String subModuleName) {
-        this.subModuleName = subModuleName;
-    }
-
-    /**
-     * Returns the revision.
-     *
-     * @return the revision
-     */
-    public Date getRevision() {
-        return revision;
-    }
-
-    /**
-     * Sets the revision.
-     *
-     * @param revision the revision to set
-     */
-    public void setRevision(Date revision) {
-        this.revision = revision;
-    }
-
-    /**
-     * Returns the type of parsed data.
-     *
-     * @return returns INCLUDE_DATA
-     */
-    @Override
-    public YangConstructType getYangConstructType() {
-        return YangConstructType.INCLUDE_DATA;
-    }
-
-    /**
-     * Validates the data on entering the corresponding parse tree node.
-     *
-     * @throws DataModelException a violation of data model rules
-     */
-    @Override
-    public void validateDataOnEntry()
-            throws DataModelException {
-        // TODO auto-generated method stub, to be implemented by parser
-
-    }
-
-    /**
-     * Validates the data on exiting the corresponding parse tree node.
-     *
-     * @throws DataModelException a violation of data model rules
-     */
-    @Override
-    public void validateDataOnExit()
-            throws DataModelException {
-        // TODO auto-generated method stub, to be implemented by parser
-
-    }
-
-    public YangNode getIncludedNode() {
-        return includedNode;
-    }
-
-    public void setIncludedNode(YangNode includedNode) {
-        this.includedNode = includedNode;
-    }
-
-    @Override
-    public int getLineNumber() {
-        return lineNumber;
-    }
-
-    @Override
-    public int getCharPosition() {
-        return charPosition;
-    }
-
-    @Override
-    public void setLineNumber(int lineNumber) {
-        this.lineNumber = lineNumber;
-    }
-
-    @Override
-    public void setCharPosition(int charPositionInLine) {
-        charPosition = charPositionInLine;
-    }
-
-    /**
-     * Adds reference to an include.
-     *
-     * @param yangNodeSet YANG node set
-     * @return YANG sub module node
-     * @throws DataModelException a violation of data model rules
-     */
-    public YangSubModule addReferenceToInclude(Set<YangNode> yangNodeSet) throws DataModelException {
-        String includedSubModuleName = getSubModuleName();
-        Date includedSubModuleRevision = getRevision();
-        YangNode subModuleNode = 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;
-            subModuleNode = findReferredNode(yangNodeSet, includedSubModuleNameWithRevision);
-        }
-
-        /*
-         * 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);
-        }
-
-        if (subModuleNode != null) {
-            if (subModuleNode instanceof YangSubModule) {
-                if (getRevision() == null) {
-                    setIncludedNode(subModuleNode);
-                    return (YangSubModule) subModuleNode;
-                }
-                // Match revision if inclusion is with revision.
-                if (((YangSubModule) subModuleNode).getRevision().getRevDate().equals(includedSubModuleRevision)) {
-                    setIncludedNode(subModuleNode);
-                    return (YangSubModule) subModuleNode;
-                }
-            }
-        }
-        // Exception if there is no match.
-        DataModelException exception = new DataModelException("YANG file error : Included sub module " +
-                includedSubModuleName + "with a given revision is not found.");
-        exception.setLine(getLineNumber());
-        exception.setCharPosition(getCharPosition());
-        throw exception;
-    }
-
-    /**
-     * Reports an error when included sub-module doesn't meet condition that
-     * "included sub-modules should belong module, as defined by the
-     * "belongs-to" statement or sub-modules are only allowed to include other
-     * sub-modules belonging to the same module.
-     *
-     * @throws DataModelException a violation in data model rule
-     */
-    public void reportIncludeError() throws DataModelException {
-        DataModelException exception = new DataModelException("YANG file error : Included sub-module " +
-                getSubModuleName() + "doesn't belongs to parent module also it doesn't belongs" +
-                "to sub-module belonging to the same parent module.");
-        exception.setLine(getLineNumber());
-        exception.setCharPosition(getCharPosition());
-        throw exception;
-    }
-}

-/*
- * 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.datamodel;
-
-import java.util.ArrayList;
-import java.util.LinkedList;
-import java.util.List;
-
-import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.datamodel.utils.Parsable;
-import org.onosproject.yangutils.datamodel.utils.YangConstructType;
-
-import static org.onosproject.yangutils.datamodel.utils.DataModelUtils.detectCollidingChildUtil;
-
-/*
- * Reference RFC 6020.
- *
- * The "input" statement, which is optional, is used to define input
- * parameters to the RPC operation.  It does not take an argument.  The
- * substatements to "input" define nodes under the RPC's input node.
- *
- * If a leaf in the input tree has a "mandatory" statement with the
- * value "true", the leaf MUST be present in a NETCONF RPC invocation.
- * Otherwise, the server MUST return a "missing-element" error.
- *
- * If a leaf in the input tree has a default value, the NETCONF server
- * MUST use this value in the same cases as described in Section 7.6.1.
- * In these cases, the server MUST operationally behave as if the leaf
- * was present in the NETCONF RPC invocation with the default value as
- * its value.
- *
- * If a "config" statement is present for any node in the input tree,
- * the "config" statement is ignored.
- *
- * If any node has a "when" statement that would evaluate to false, then
- * this node MUST NOT be present in the input tree.
- *
- * The input substatements
- *
- *     +--------------+---------+-------------+------------------+
- *     | substatement | section | cardinality |data model mapping|
- *     +--------------+---------+-------------+------------------+
- *     | anyxml       | 7.10    | 0..n        | -not supported   |
- *     | choice       | 7.9     | 0..n        | -child nodes     |
- *     | container    | 7.5     | 0..n        | -child nodes     |
- *     | grouping     | 7.11    | 0..n        | -child nodes     |
- *     | leaf         | 7.6     | 0..n        | -YangLeaf        |
- *     | leaf-list    | 7.7     | 0..n        | -YangLeafList    |
- *     | list         | 7.8     | 0..n        | -child nodes     |
- *     | typedef      | 7.3     | 0..n        | -child nodes     |
- *     | uses         | 7.12    | 0..n        | -child nodes     |
- *     +--------------+---------+-------------+------------------+
- */
-
-/**
- * Represents data model node to maintain information defined in YANG input.
- */
-public class YangInput
-        extends YangNode
-        implements YangLeavesHolder, Parsable, CollisionDetector, YangAugmentableNode, YangIsFilterContentNodes {
-
-    private static final long serialVersionUID = 806201608L;
-
-    /**
-     * Name of the input.
-     */
-    private String name;
-
-    /**
-     * List of leaves contained.
-     */
-    private List<YangLeaf> listOfLeaf;
-
-    /**
-     * List of leaf-lists contained.
-     */
-    private List<YangLeafList> listOfLeafList;
-
-    private List<YangAugmentedInfo> yangAugmentedInfo = new ArrayList<>();
-
-    /**
-     * Create a rpc input node.
-     */
-    public YangInput() {
-        super(YangNodeType.INPUT_NODE);
-        listOfLeaf = new LinkedList<>();
-        listOfLeafList = new LinkedList<>();
-    }
-
-    @Override
-    public void detectCollidingChild(String identifierName, YangConstructType dataType)
-            throws DataModelException {
-        // Detect colliding child.
-        detectCollidingChildUtil(identifierName, dataType, this);
-    }
-
-    @Override
-    public void detectSelfCollision(String identifierName, YangConstructType dataType)
-            throws DataModelException {
-        if (getName().equals(identifierName)) {
-            throw new DataModelException("YANG file error: Duplicate input identifier detected, same as input \""
-                    + getName() + "\"");
-        }
-    }
-
-    @Override
-    public YangConstructType getYangConstructType() {
-        return YangConstructType.INPUT_DATA;
-    }
-
-    @Override
-    public void validateDataOnEntry()
-            throws DataModelException {
-        //TODO: implement the method.
-    }
-
-    @Override
-    public void validateDataOnExit()
-            throws DataModelException {
-        //TODO: implement the method.
-    }
-
-    @Override
-    public List<YangLeaf> getListOfLeaf() {
-        return listOfLeaf;
-    }
-
-    @Override
-    public void setListOfLeaf(List<YangLeaf> leafsList) {
-        listOfLeaf = leafsList;
-    }
-
-    @Override
-    public void addLeaf(YangLeaf leaf) {
-        getListOfLeaf().add(leaf);
-    }
-
-    @Override
-    public List<YangLeafList> getListOfLeafList() {
-        return listOfLeafList;
-    }
-
-    @Override
-    public void setListOfLeafList(List<YangLeafList> listOfLeafList) {
-        this.listOfLeafList = listOfLeafList;
-    }
-
-    @Override
-    public void addLeafList(YangLeafList leafList) {
-        getListOfLeafList().add(leafList);
-    }
-
-    @Override
-    public String getName() {
-        return name;
-    }
-
-    @Override
-    public void setName(String name) {
-        this.name = name;
-    }
-
-    @Override
-    public void addAugmentation(YangAugmentedInfo augmentInfo) {
-        yangAugmentedInfo.add(augmentInfo);
-    }
-
-    @Override
-    public void removeAugmentation(YangAugmentedInfo augmentInfo) {
-        yangAugmentedInfo.remove(augmentInfo);
-    }
-
-    @Override
-    public List<YangAugmentedInfo> getAugmentedInfoList() {
-        return yangAugmentedInfo;
-    }
-}

-/*
- * 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.datamodel;
-
-/**
- * Represent the YANG nodes which can contain is filter content match.
- */
-public interface YangIsFilterContentNodes {
-}

-/*
- * 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.datamodel;
-
-import java.io.Serializable;
-import java.util.LinkedList;
-import java.util.List;
-import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
-import org.onosproject.yangutils.datamodel.utils.Parsable;
-import org.onosproject.yangutils.datamodel.utils.YangConstructType;
-
-/*
- * Reference:RFC 6020.
- *  The "leaf" statement is used to define a leaf node in the schema
- *  tree.  It takes one argument, which is an identifier, followed by a
- *  block of sub-statements that holds detailed leaf information.
- *
- *  A leaf node has a value, but no child nodes in the data tree.
- *  Conceptually, the value in the data tree is always in the canonical
- *  form.
- *
- *  A leaf node exists in zero or one instances in the data tree.
- *
- *  The "leaf" statement is used to define a scalar variable of a
- *  particular built-in or derived type.
- *
- * The leaf's sub-statements
- *
- *       +--------------+---------+-------------+------------------+
- *       | substatement | section | cardinality |data model mapping|
- *       +--------------+---------+-------------+------------------+
- *       | config       | 7.19.1  | 0..1        | - boolean        |
- *       | default      | 7.6.4   | 0..1        | - string         |
- *       | description  | 7.19.3  | 0..1        | - string         |
- *       | if-feature   | 7.18.2  | 0..n        | - YangIfFeature  |
- *       | mandatory    | 7.6.5   | 0..1        | - boolean        |
- *       | must         | 7.5.3   | 0..n        | - YangMust       |
- *       | reference    | 7.19.4  | 0..1        | - string         |
- *       | status       | 7.19.2  | 0..1        | - YangStatus     |
- *       | type         | 7.6.3   | 1           | - YangType       |
- *       | units        | 7.3.3   | 0..1        | - String         |
- *       | when         | 7.19.5  | 0..1        | - YangWhen       |
- *       +--------------+---------+-------------+------------------+
- */
-
-/**
- * Represents leaf data represented in YANG.
- */
-public class YangLeaf
-        implements YangCommonInfo, Parsable, Cloneable, Serializable,
-        YangMustHolder, YangIfFeatureHolder, YangWhenHolder, YangDataNode {
-
-    private static final long serialVersionUID = 806201635L;
-
-    /**
-     * Name of leaf.
-     */
-    private String name;
-
-    /**
-     * If the leaf is a config parameter.
-     */
-    private Boolean isConfig;
-
-    /**
-     * description of leaf.
-     */
-    private String description;
-
-    /**
-     * If mandatory leaf.
-     */
-    private boolean isMandatory;
-
-    /**
-     * The textual reference to this leaf.
-     */
-    private String reference;
-
-    /**
-     * Status of leaf in YANG definition.
-     */
-    private YangStatusType status = YangStatusType.CURRENT;
-
-    /**
-     * Textual units info.
-     */
-    private String units;
-
-    /**
-     * Data type of the leaf.
-     */
-    private YangType<?> dataType;
-
-    /**
-     * Default value in string, needs to be converted to the target object,
-     * based on the type.
-     */
-    private String defaultValueInString;
-
-    /**
-     * When data of the leaf.
-     */
-    private YangWhen when;
-
-    /**
-     * YANG Node in which the leaf is contained.
-     */
-    private transient YangLeavesHolder containedIn;
-
-    /**
-     * List of must statement constraints.
-     */
-    private List<YangMust> mustConstraintList;
-
-    /**
-     * List of if-feature.
-     */
-    private List<YangIfFeature> ifFeatureList;
-
-    /**
-     * Creates a YANG leaf.
-     */
-    public YangLeaf() {
-    }
-
-    /**
-     * Returns the name of leaf.
-     *
-     * @return the leaf name
-     */
-    public String getName() {
-        return name;
-    }
-
-    /**
-     * Sets the name of leaf.
-     *
-     * @param leafName the leaf name to set
-     */
-    public void setLeafName(String leafName) {
-        name = leafName;
-    }
-
-    /**
-     * Returns the config flag.
-     *
-     * @return if config flag
-     */
-    public Boolean isConfig() {
-        return isConfig;
-    }
-
-    /**
-     * Sets the config flag.
-     *
-     * @param isCfg the flag value to set
-     */
-    public void setConfig(boolean isCfg) {
-        isConfig = isCfg;
-    }
-
-    /**
-     * Returns the when.
-     *
-     * @return the when
-     */
-    @Override
-    public YangWhen getWhen() {
-        return when;
-    }
-
-    /**
-     * Sets the when.
-     *
-     * @param when the when to set
-     */
-    @Override
-    public void setWhen(YangWhen when) {
-        this.when = when;
-    }
-
-    /**
-     * Returns the description.
-     *
-     * @return the description
-     */
-    @Override
-    public String getDescription() {
-        return description;
-    }
-
-    /**
-     * Sets the description.
-     *
-     * @param description set the description
-     */
-    @Override
-    public void setDescription(String description) {
-        this.description = description;
-    }
-
-    /**
-     * Returns if the leaf is mandatory.
-     *
-     * @return if leaf is mandatory
-     */
-    public boolean isMandatory() {
-        return isMandatory;
-    }
-
-    /**
-     * Sets if the leaf is mandatory.
-     *
-     * @param isReq if the leaf is mandatory
-     */
-    public void setMandatory(boolean isReq) {
-        isMandatory = isReq;
-    }
-
-    /**
-     * Returns the textual reference.
-     *
-     * @return the reference
-     */
-    @Override
-    public String getReference() {
-        return reference;
-    }
-
-    /**
-     * Sets the textual reference.
-     *
-     * @param reference the reference to set
-     */
-    @Override
-    public void setReference(String reference) {
-        this.reference = reference;
-    }
-
-    /**
-     * Returns the status.
-     *
-     * @return the status
-     */
-    @Override
-    public YangStatusType getStatus() {
-        return status;
-    }
-
-    /**
-     * Sets the status.
-     *
-     * @param status the status to set
-     */
-    @Override
-    public void setStatus(YangStatusType status) {
-        this.status = status;
-    }
-
-    /**
-     * Returns the units.
-     *
-     * @return the units
-     */
-    public String getUnits() {
-        return units;
-    }
-
-    /**
-     * Sets the units.
-     *
-     * @param units the units to set
-     */
-    public void setUnits(String units) {
-        this.units = units;
-    }
-
-    /**
-     * Returns the default value.
-     *
-     * @return the default value
-     */
-    public String getDefaultValueInString() {
-        return defaultValueInString;
-    }
-
-    /**
-     * Sets the default value.
-     *
-     * @param defaultValueInString the default value
-     */
-    public void setDefaultValueInString(String defaultValueInString) {
-        this.defaultValueInString = defaultValueInString;
-    }
-
-    /**
-     * Returns the data type.
-     *
-     * @return the data type
-     */
-    public YangType<?> getDataType() {
-        return dataType;
-    }
-
-    /**
-     * Sets the data type.
-     *
-     * @param dataType the data type to set
-     */
-    public void setDataType(YangType<?> dataType) {
-        this.dataType = dataType;
-    }
-
-    /**
-     * Retrieves the YANG node in which the leaf is defined.
-     *
-     * @return the YANG node in which the leaf is defined
-     */
-    public YangLeavesHolder getContainedIn() {
-        return containedIn;
-    }
-
-    /**
-     * Assigns the YANG node in which the leaf is defined.
-     *
-     * @param containedIn the YANG node in which the leaf is defined
-     */
-    public void setContainedIn(YangLeavesHolder containedIn) {
-        this.containedIn = containedIn;
-    }
-
-    @Override
-    public YangLeaf clone()
-            throws CloneNotSupportedException {
-        return (YangLeaf) super.clone();
-    }
-
-    /**
-     * Returns the type of the parsed data.
-     *
-     * @return returns LEAF_DATA
-     */
-    @Override
-    public YangConstructType getYangConstructType() {
-        return YangConstructType.LEAF_DATA;
-    }
-
-    /**
-     * Validates the data on entering the corresponding parse tree node.
-     *
-     * @throws DataModelException a violation of data model rules
-     */
-    @Override
-    public void validateDataOnEntry()
-            throws DataModelException {
-        // TODO auto-generated method stub, to be implemented by parser
-
-    }
-
-    /**
-     * Validates the data on exiting the corresponding parse tree node.
-     *
-     * @throws DataModelException a violation of data model rules
-     */
-    @Override
-    public void validateDataOnExit()
-            throws DataModelException {
-        if (defaultValueInString != null && !defaultValueInString.isEmpty() && dataType != null) {
-            dataType.isValidValue(defaultValueInString);
-        }
-    }
-
-    @Override
-    public List<YangMust> getListOfMust() {
-        return mustConstraintList;
-    }
-
-    @Override
-    public void setListOfMust(List<YangMust> mustConstraintList) {
-        this.mustConstraintList = mustConstraintList;
-    }
-
-    @Override
-    public void addMust(YangMust must) {
-        if (getListOfMust() == null) {
-            setListOfMust(new LinkedList<>());
-        }
-        getListOfMust().add(must);
-    }
-
-    @Override
-    public List<YangIfFeature> getIfFeatureList() {
-        return ifFeatureList;
-    }
-
-    @Override
-    public void addIfFeatureList(YangIfFeature ifFeature) {
-        if (getIfFeatureList() == null) {
-            setIfFeatureList(new LinkedList<>());
-        }
-        getIfFeatureList().add(ifFeature);
-    }
-
-    @Override
-    public void setIfFeatureList(List<YangIfFeature> ifFeatureList) {
-        this.ifFeatureList = ifFeatureList;
-    }
-}