[ONOS-6017] Implement DefaultMappingKey and DefaultMappingValue

Change-Id: Ie41242436323d9fa89400c2ab661fcc35518b9c8
diff --git a/apps/mappingmanagement/api/src/main/java/org/onosproject/mapping/actions/MappingActions.java b/apps/mappingmanagement/api/src/main/java/org/onosproject/mapping/actions/MappingActions.java
new file mode 100644
index 0000000..676d65b
--- /dev/null
+++ b/apps/mappingmanagement/api/src/main/java/org/onosproject/mapping/actions/MappingActions.java
@@ -0,0 +1,63 @@
+/*
+ * 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.actions;
+
+/**
+ * Factory class for creating various mapping actions.
+ */
+public final class MappingActions {
+
+    /**
+     * Prevents instantiation from external.
+     */
+    private MappingActions() {}
+
+    /**
+     * Creates a drop mapping action.
+     *
+     * @return a drop mapping action
+     */
+    public static DropMappingAction drop() {
+        return new DropMappingAction();
+    }
+
+    /**
+     * Creates a forward mapping action.
+     *
+     * @return a forward mapping action
+     */
+    public static ForwardMappingAction forward() {
+        return new ForwardMappingAction();
+    }
+
+    /**
+     * Creates a native forward mapping action.
+     *
+     * @return a native forward mapping action
+     */
+    public static NativeForwardMappingAction nativeForward() {
+        return new NativeForwardMappingAction();
+    }
+
+    /**
+     * Creates a no action.
+     *
+     * @return a no action
+     */
+    public static NoMappingAction noAction() {
+        return new NoMappingAction();
+    }
+}