[ONOS-3875] Code Framework for YangUtils

Change-Id: I3844f8eca6f061900367637fb671cb828a8e6d09
diff --git a/utils/yangutils/src/main/java/org/onosproject/yangutils/datamodel/YangNodeType.java b/utils/yangutils/src/main/java/org/onosproject/yangutils/datamodel/YangNodeType.java
new file mode 100644
index 0000000..f3798f8
--- /dev/null
+++ b/utils/yangutils/src/main/java/org/onosproject/yangutils/datamodel/YangNodeType.java
@@ -0,0 +1,81 @@
+/*
+ * 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;
+
+/**
+ * Node type in data model tree corresponding to YANG schema.
+ */
+public enum YangNodeType {
+    /**
+     * Node contains module information.
+     */
+    MODULE_NODE,
+
+    /**
+     * Node contains sub module information.
+     */
+    SUB_MODULE_NODE,
+
+    /**
+     * Node contains "YANG's typedef" information.
+     */
+    TYPEDEF_NODE,
+
+    /**
+     * Node contains "YANG's type" information.
+     */
+    TYPE_NODE,
+
+    /**
+     * Node contains "YANG's choice" information.
+     */
+    CHOICE_NODE,
+
+    /**
+     * Node contains "YANG's case" information.
+     */
+    CASE_NODE,
+
+    /**
+     * Node contains "YANG's enumeration" information.
+     */
+    ENUMERATION_NODE,
+
+    /**
+     * Node contains grouping information.
+     */
+    GROUPING_NODE,
+
+    /**
+     * Node contains "YANG's uses" information.
+     */
+    USES_NODE,
+
+    /**
+     * Node contains augmentation information.
+     */
+    AUGMENT_NODE,
+
+    /**
+     * Node contains "YANG's container" information.
+     */
+    CONTAINER_NODE,
+
+    /**
+     * Node contains "YANG's list" information.
+     */
+    LIST_NODE
+}