[ONOS-5916] Add various MappingAddress impl classes with unit tests

Change-Id: Ie373601d1406d161e8071e78cd584e5cc8b8f5af
diff --git a/apps/mappingmanagement/api/src/main/java/org/onosproject/mapping/addresses/MappingAddress.java b/apps/mappingmanagement/api/src/main/java/org/onosproject/mapping/addresses/MappingAddress.java
new file mode 100644
index 0000000..5c7775b
--- /dev/null
+++ b/apps/mappingmanagement/api/src/main/java/org/onosproject/mapping/addresses/MappingAddress.java
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2017-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.mapping.addresses;
+
+/**
+ * Presentation of a single mapping selection.
+ */
+public interface MappingAddress {
+
+    String TYPE_SEPARATOR = ":";
+
+    /**
+     * Types of address to which the mapping criterion may apply.
+     */
+    enum Type {
+
+        /** IPv4 Address. */
+        IPV4,
+
+        /** IPv6 Address. */
+        IPV6,
+
+        /** Autonomous System Number. */
+        AS,
+
+        /** Ethernet Address (MAC Address). */
+        ETH,
+
+        /** Distinguished Name. */
+        DN,
+
+        /** Extension Address. */
+        EXTENSION
+    }
+
+    /**
+     * Returns the type of mapping address.
+     *
+     * @return type of mapping address
+     */
+    Type type();
+}