X-Git-Url: https://git.opendaylight.org/gerrit/gitweb?a=blobdiff_plain;f=opendaylight%2Fmd-sal%2Fsal-common-api%2Fsrc%2Fmain%2Fjava%2Forg%2Fopendaylight%2Fcontroller%2Fmd%2Fsal%2Fcommon%2Fapi%2Fdata%2FDataChangeEvent.java;h=15d1daa1bbe882393f863e892728490c212f5e71;hb=8f15fef884bc20239625850c4a2fcdaf36395526;hp=144a81b2566f549c56e7cbb00bb0e9567db644f2;hpb=189b125d5e954d8fe7552c8f1abdde74b1232d91;p=controller.git

diff --git a/opendaylight/md-sal/sal-common-api/src/main/java/org/opendaylight/controller/md/sal/common/api/data/DataChangeEvent.java b/opendaylight/md-sal/sal-common-api/src/main/java/org/opendaylight/controller/md/sal/common/api/data/DataChangeEvent.java
index 144a81b256..15d1daa1bb 100644
--- a/opendaylight/md-sal/sal-common-api/src/main/java/org/opendaylight/controller/md/sal/common/api/data/DataChangeEvent.java
+++ b/opendaylight/md-sal/sal-common-api/src/main/java/org/opendaylight/controller/md/sal/common/api/data/DataChangeEvent.java
@@ -8,20 +8,37 @@
 package org.opendaylight.controller.md.sal.common.api.data;
 
 import org.opendaylight.yangtools.concepts.Immutable;
+import org.opendaylight.yangtools.concepts.Path;
 
-public interface DataChangeEvent<P,D> extends DataChange<P, D>, Immutable {
+public interface DataChangeEvent<P extends Path<P>,D> extends DataChange<P, D>, Immutable {
+
+    /**
+     * Returns a orignal subtree of data, which starts at the path
+     * where listener was registered.
+     *
+     */
+    D getOriginalConfigurationSubtree();
 
     /**
      * Returns a new subtree of data, which starts at the path
      * where listener was registered.
-     * 
+     *
+     */
+    D getOriginalOperationalSubtree();
+
+
+
+    /**
+     * Returns a updated subtree of data, which starts at the path
+     * where listener was registered.
+     *
      */
     D getUpdatedConfigurationSubtree();
 
     /**
-     * Returns a new subtree of data, which starts at the path
+     * Returns a udpated subtree of data, which starts at the path
      * where listener was registered.
-     * 
+     *
      */
     D getUpdatedOperationalSubtree();
 }