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=d62e176e62d1beeb22c934f7c82aa3a713909b91;hb=fd8c7a6e7445ca9788c2557caa9da5af8c8a2153;hp=144a81b2566f549c56e7cbb00bb0e9567db644f2;hpb=caee336f062eba4909ba53cbaccdde0714236134;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..d62e176e62 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
@@ -11,15 +11,31 @@ import org.opendaylight.yangtools.concepts.Immutable;
 
 public interface DataChangeEvent<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.
      * 
      */