Bug 499: Added support for change listeners.

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

diff --git a/opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/store/impl/tree/TreeNodeUtils.java b/opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/store/impl/tree/TreeNodeUtils.java
index 67cfde2e8c06e571b4a1ce248b42ca549d5eb53b..dc893098775419177a8899e11cdd15c9dc98fd16 100644 (file)
--- a/opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/store/impl/tree/TreeNodeUtils.java
+++ b/opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/store/impl/tree/TreeNodeUtils.java
@@ -64,4 +64,11 @@ public class TreeNodeUtils {
         return new SimpleEntry<InstanceIdentifier,T>(parentPath,parent.get());
     }
 
+    public static <T extends StoreTreeNode<T>> Optional<T> getChild(final Optional<T> parent,final PathArgument child) {
+        if(parent.isPresent()) {
+            return parent.get().getChild(child);
+        }
+        return Optional.absent();
+    }
+
 }