XPATH Datamodel For YangUtils

Change-Id: I39449323a6d43ad293ac7ae986dc983d35eb944b
diff --git a/utils/yangutils/datamodel/src/main/java/org/onosproject/yangutils/datamodel/YangPathPredicate.java b/utils/yangutils/datamodel/src/main/java/org/onosproject/yangutils/datamodel/YangPathPredicate.java
new file mode 100644
index 0000000..cf45349
--- /dev/null
+++ b/utils/yangutils/datamodel/src/main/java/org/onosproject/yangutils/datamodel/YangPathPredicate.java
@@ -0,0 +1,132 @@
+/*
+ * 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;
+
+/**
+ * Representation of data model node to maintain path predicate in YANG absolute-path or relative-path.
+ */
+public class YangPathPredicate<T> implements Serializable {
+
+    private static final long serialVersionUID = 806201689L;
+
+    // YANG node identifier.
+    private YangNodeIdentifier nodeIdentifier;
+
+    // Left axis node will represent the nodeidentifier before equality sign in path predicate.
+    private T leftAxisNode;
+
+    // YANG path operator.
+    private YangPathOperator pathOperator;
+
+    // YANG relative path.
+    private YangRelativePath rightRelativePath;
+
+    // Right axis node will represent the nodeidentifier after equality sign in path predicate.
+    private T rightAxisNode;
+
+    /**
+     * Returns the path expression operator.
+     *
+     * @return the path expression operator
+     */
+    public YangPathOperator getPathOperator() {
+        return pathOperator;
+    }
+
+    /**
+     * Sets the path expression operator.
+     *
+     * @param pathOperator Sets the path expression operator
+     */
+    public void setPathOperator(YangPathOperator pathOperator) {
+        this.pathOperator = pathOperator;
+    }
+
+    /**
+     * Returns the right relative path expression.
+     *
+     * @return the right relative path expression
+     */
+    public YangRelativePath getRightRelativePath() {
+        return rightRelativePath;
+    }
+
+    /**
+     * Sets the right relative path expression.
+     *
+     * @param rightRelativePath Sets the right relative path expression
+     */
+    public void setRightRelativePath(YangRelativePath rightRelativePath) {
+        this.rightRelativePath = rightRelativePath;
+    }
+
+    /**
+     * Returns the nodeidentifier.
+     *
+     * @return the nodeidentifier
+     */
+    public YangNodeIdentifier getNodeIdentifier() {
+        return nodeIdentifier;
+    }
+
+    /**
+     * Sets the YANG node identifier.
+     *
+     * @param nodeIdentifier Sets the node identifier
+     *
+     */
+    public void setNodeIdentifier(YangNodeIdentifier nodeIdentifier) {
+        this.nodeIdentifier = nodeIdentifier;
+    }
+
+    /**
+     * Returns the left axis node.
+     *
+     * @return the left axis node
+     */
+    public T getLeftAxisNode() {
+        return leftAxisNode;
+    }
+
+    /**
+     * Sets the left axis node.
+     *
+     * @param leftAxisNode Sets the left axis node
+     */
+    public void setLeftAxisNode(T leftAxisNode) {
+        this.leftAxisNode = leftAxisNode;
+    }
+
+    /**
+     * Returns the right axis node.
+     *
+     * @return the right axis node
+     */
+    public T getRightAxisNode() {
+        return rightAxisNode;
+    }
+
+    /**
+     * Sets the right axis node.
+     *
+     * @param rightAxisNode Sets the right axis node
+     */
+    public void setRightAxisNode(T rightAxisNode) {
+        this.rightAxisNode = rightAxisNode;
+    }
+}