[ONOS-3894, 4071] YANG Advanced Construct Union & Grouping

Change-Id: I0f828adb5884c2d7b6e4120f9843c416608ae5e7
diff --git a/utils/yangutils/src/main/java/org/onosproject/yangutils/datamodel/YangNodeIdentifier.java b/utils/yangutils/src/main/java/org/onosproject/yangutils/datamodel/YangNodeIdentifier.java
new file mode 100644
index 0000000..116ee7a
--- /dev/null
+++ b/utils/yangutils/src/main/java/org/onosproject/yangutils/datamodel/YangNodeIdentifier.java
@@ -0,0 +1,71 @@
+/*
+ * Copyright 2016 Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.yangutils.datamodel;
+
+/**
+ * YANG node identifier which is a combination of prefix and name.
+ */
+public class YangNodeIdentifier {
+
+    // Name of the node.
+    String name;
+
+    // Prefix of the node.
+    String prefix;
+
+    /**
+     * Creates an instance of YANG node identifier.
+     */
+    public YangNodeIdentifier() {
+    }
+
+    /**
+     * Returns name of the node identifier.
+     *
+     * @return name of the node identifier
+     */
+    public String getName() {
+        return name;
+    }
+
+    /**
+     * Set name of the node identifier.
+     *
+     * @param name node identifier name
+     */
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    /**
+     * Returns prefix of the node identifier.
+     *
+     * @return prefix of the node identifier
+     */
+    public String getPrefix() {
+        return prefix;
+    }
+
+    /**
+     * Set prefix of the node identifier.
+     *
+     * @param prefix prefix of the node identifier
+     */
+    public void setPrefix(String prefix) {
+        this.prefix = prefix;
+    }
+}