BUG-2673: make CDS implement DOMDataTreeChangeListener

[controller.git] / opendaylight / md-sal / sal-dom-broker / src / main / java / org / opendaylight / controller / md / sal / dom / broker / impl / PingPongDataBroker.java

diff --git a/opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/broker/impl/PingPongDataBroker.java b/opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/broker/impl/PingPongDataBroker.java
index 715a13677af54e9796dfe076f4d7032cd361bc0a..b5ec58d54add8151632b955b30fe76f42fde894e 100644 (file)
--- a/opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/broker/impl/PingPongDataBroker.java
+++ b/opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/broker/impl/PingPongDataBroker.java
@@ -11,7 +11,11 @@ import com.google.common.base.Preconditions;
 import javax.annotation.Nonnull;
 import org.opendaylight.controller.md.sal.common.api.data.TransactionChainListener;
 import org.opendaylight.controller.md.sal.dom.api.DOMDataBroker;
+import org.opendaylight.controller.md.sal.dom.api.DOMDataTreeChangeListener;
+import org.opendaylight.controller.md.sal.dom.api.DOMDataTreeChangeService;
+import org.opendaylight.controller.md.sal.dom.api.DOMDataTreeIdentifier;
 import org.opendaylight.controller.md.sal.dom.spi.ForwardingDOMDataBroker;
+import org.opendaylight.yangtools.concepts.ListenerRegistration;
 
 /**
  * An implementation of a {@link DOMDataBroker}, which forwards most requests to a delegate.
@@ -20,7 +24,7 @@ import org.opendaylight.controller.md.sal.dom.spi.ForwardingDOMDataBroker;
  * guarantee transaction ordering between transactions allocated directly from the broker
  * and its transaction chains.
  */
-public final class PingPongDataBroker extends ForwardingDOMDataBroker implements AutoCloseable {
+public final class PingPongDataBroker extends ForwardingDOMDataBroker implements AutoCloseable, DOMDataTreeChangeService {
     private final DOMDataBroker delegate;
 
     /**
@@ -47,4 +51,13 @@ public final class PingPongDataBroker extends ForwardingDOMDataBroker implements
     public void close() {
         // TODO Auto-generated method stub
     }
+
+    @Override
+    public <L extends DOMDataTreeChangeListener> ListenerRegistration<L> registerDataTreeChangeListener(final DOMDataTreeIdentifier treeId, final L listener) {
+        if (delegate instanceof DOMDataTreeChangeService) {
+            return ((DOMDataTreeChangeService)delegate).registerDataTreeChangeListener(treeId, listener);
+        }
+
+        throw new UnsupportedOperationException("Delegate " + delegate + " does not support required functionality");
+    }
 }