YANG construct collision detection framework added
Change-Id: I1458f9e3192641f3f90c444798c31a64536ffa5d
diff --git a/src/main/java/org/onosproject/yangutils/datamodel/CollisionDetector.java b/src/main/java/org/onosproject/yangutils/datamodel/CollisionDetector.java
new file mode 100644
index 0000000..0913d03
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+++ b/src/main/java/org/onosproject/yangutils/datamodel/CollisionDetector.java
@@ -0,0 +1,50 @@
+/*
+ * 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;
+
+import org.onosproject.yangutils.datamodel.exceptions.DataModelException;
+import org.onosproject.yangutils.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;
+}