Initial sketch of YANG runtime API.
Change-Id: I166f877e484284aa7fa75b33d539f74d9835883b
diff --git a/runtime/src/main/java/org/onosproject/yang/DataNode.java b/runtime/src/main/java/org/onosproject/yang/DataNode.java
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+++ b/runtime/src/main/java/org/onosproject/yang/DataNode.java
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+/*
+ * 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.yang;
+
+/**
+ * Representation of a configuration data node capable of either carrying data
+ * or conveying the configuration tree structure.
+ */
+public interface DataNode {
+
+ // TODO: specify generic nature of holding data and/or tree structure
+ // TODO: determine whether there should be subclasses for leaf, container, etc.
+ // identifier
+ // type
+ // no parent!
+
+}