Initial sketch and implementaion of Objectives.

These objective will be used to provide a layer of abstraction
that isolates applications for device pipeline details.

initial objective support

Change-Id: I019302822421f0fe1f508f2f7527d91578e30116

initial implemetation of a simple pipeline behaviour

Change-Id: Id0d9167896c717d05cda90e1524fc24c76e9fc9b

initial implementation of objectives

Change-Id: I768fa2020308d5feb95eaaff355aa511b323beca
diff --git a/core/api/src/main/java/org/onosproject/net/behaviour/Pipeliner.java b/core/api/src/main/java/org/onosproject/net/behaviour/Pipeliner.java
new file mode 100644
index 0000000..6d35adf
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/net/behaviour/Pipeliner.java
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2015 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.net.behaviour;
+
+import org.onlab.osgi.ServiceDirectory;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.flowobjective.FilteringObjective;
+import org.onosproject.net.flowobjective.ForwardingObjective;
+
+import java.util.Collection;
+import java.util.concurrent.Future;
+
+/**
+ * Behaviour for handling various pipelines.
+ */
+public interface Pipeliner {
+
+    /**
+     * Injecting the service directory into the driver.
+     *
+     * @param deviceId the deviceId
+     * @param serviceDirectory the service directory.
+     */
+    void init(DeviceId deviceId, ServiceDirectory serviceDirectory);
+
+    /**
+     * Installs the filtering rules onto the device.
+     *
+     * @param filters the collection of filters
+     * @return a future indicating the success of the operation
+     */
+     Future<Boolean> filter(Collection<FilteringObjective> filters);
+
+    /**
+     * Installs the forwarding rules onto the device.
+     *
+     * @param forwardings the collection of forwarding objectives
+     * @return a future indicating the success of the operation
+     */
+    Future<Boolean> forward(Collection<ForwardingObjective> forwardings);
+
+}