[ONOS-3906] Utils for traversal of data model tree for translator.

Change-Id: I70f4d2b1c1d2ac791eb6a915b18d8e21b4a9a21a
diff --git a/utils/yangutils/src/main/java/org/onosproject/yangutils/translator/tojava/TraversalType.java b/utils/yangutils/src/main/java/org/onosproject/yangutils/translator/tojava/TraversalType.java
new file mode 100644
index 0000000..2bf3643
--- /dev/null
+++ b/utils/yangutils/src/main/java/org/onosproject/yangutils/translator/tojava/TraversalType.java
@@ -0,0 +1,43 @@
+/*
+ * 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.translator.tojava;
+
+/**
+ * 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
+}
diff --git a/utils/yangutils/src/main/java/org/onosproject/yangutils/translator/tojava/utils/package-info.java b/utils/yangutils/src/main/java/org/onosproject/yangutils/translator/tojava/utils/package-info.java
new file mode 100644
index 0000000..945d22f
--- /dev/null
+++ b/utils/yangutils/src/main/java/org/onosproject/yangutils/translator/tojava/utils/package-info.java
@@ -0,0 +1,20 @@
+/*
+ * 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.
+ */
+
+/**
+ * Translator's utils for YANG plugin.
+ */
+package org.onosproject.yangutils.translator.tojava.utils;