X-Git-Url: https://git.opendaylight.org/gerrit/gitweb?a=blobdiff_plain;ds=sidebyside;f=opendaylight%2Fmd-sal%2Fsal-binding-api%2Fsrc%2Fmain%2Fjava%2Forg%2Fopendaylight%2Fcontroller%2Fmd%2Fsal%2Fbinding%2Fapi%2FDataObjectModification.java;fp=opendaylight%2Fmd-sal%2Fsal-binding-api%2Fsrc%2Fmain%2Fjava%2Forg%2Fopendaylight%2Fcontroller%2Fmd%2Fsal%2Fbinding%2Fapi%2FDataObjectModification.java;h=3dc6e4030f56953620ab8762ecae7c32d4ffbd74;hb=0992b3023da383702cf44ab3e5a95272365169a4;hp=678ac34e39d25d54fc12316fc17df1d51c5ed28f;hpb=6a7e0492ef541f8aae9a6159862358443ed43f8e;p=controller.git

diff --git a/opendaylight/md-sal/sal-binding-api/src/main/java/org/opendaylight/controller/md/sal/binding/api/DataObjectModification.java b/opendaylight/md-sal/sal-binding-api/src/main/java/org/opendaylight/controller/md/sal/binding/api/DataObjectModification.java
index 678ac34e39..3dc6e4030f 100644
--- a/opendaylight/md-sal/sal-binding-api/src/main/java/org/opendaylight/controller/md/sal/binding/api/DataObjectModification.java
+++ b/opendaylight/md-sal/sal-binding-api/src/main/java/org/opendaylight/controller/md/sal/binding/api/DataObjectModification.java
@@ -65,7 +65,17 @@ public interface DataObjectModification<T extends DataObject> extends org.openda
     @Nonnull ModificationType getModificationType();
 
     /**
-     * Returns after state of top level container.
+     * Returns before-state of top level container. Implementations are encouraged,
+     * but not required to provide this state.
+     *
+     * @param root Class representing data container
+     * @return State of object before modification. Null if subtree was not present,
+     *         or the implementation cannot provide the state.
+     */
+    @Nullable T getDataBefore();
+
+    /**
+     * Returns after-state of top level container.
      *
      * @param root Class representing data container
      * @return State of object after modification. Null if subtree is not present.