X-Git-Url: https://git.opendaylight.org/gerrit/gitweb?a=blobdiff_plain;f=yang%2Fyang-data-api%2Fsrc%2Fmain%2Fjava%2Forg%2Fopendaylight%2Fyangtools%2Fyang%2Fdata%2Fapi%2Fschema%2Ftree%2FDataTreeCandidateNode.java;h=4a8ced9be79421fcc04fa63418336f3cd82aa2c1;hb=refs%2Fchanges%2F81%2F14281%2F2;hp=76f3f563cd8596544121258c8e390a6820501fc3;hpb=5d50486aed75e0b94a06952add2cc5d9a62ba053;p=yangtools.git

diff --git a/yang/yang-data-api/src/main/java/org/opendaylight/yangtools/yang/data/api/schema/tree/DataTreeCandidateNode.java b/yang/yang-data-api/src/main/java/org/opendaylight/yangtools/yang/data/api/schema/tree/DataTreeCandidateNode.java
index 76f3f563cd..4a8ced9be7 100644
--- a/yang/yang-data-api/src/main/java/org/opendaylight/yangtools/yang/data/api/schema/tree/DataTreeCandidateNode.java
+++ b/yang/yang-data-api/src/main/java/org/opendaylight/yangtools/yang/data/api/schema/tree/DataTreeCandidateNode.java
@@ -7,11 +7,12 @@
  */
 package org.opendaylight.yangtools.yang.data.api.schema.tree;
 
+import com.google.common.base.Optional;
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
 
-import com.google.common.base.Optional;
-
 /**
  * A single node within a {@link DataTreeCandidate}. The nodes are organized
  * in tree hierarchy, reflecting the modification from which this candidate
@@ -19,26 +20,36 @@ import com.google.common.base.Optional;
  * tree restricted to the modified nodes.
  */
 public interface DataTreeCandidateNode {
+
     /**
      * Get the node identifier.
      *
      * @return The node identifier.
      */
-    PathArgument getIdentifier();
+    @Nonnull PathArgument getIdentifier();
 
     /**
      * Get an unmodifiable iterable of modified child nodes.
      *
      * @return Unmodifiable iterable of modified child nodes.
      */
-    Iterable<DataTreeCandidateNode> getChildNodes();
+    @Nonnull Iterable<DataTreeCandidateNode> getChildNodes();
+
+    /**
+     * Returns modified child or null if child was not modified
+     * / does not exists.
+     *
+     * @param identifier Identifier of child node
+     * @return Modified child or null if child was not modified.
+     */
+    @Nullable DataTreeCandidateNode getModifiedChild(PathArgument identifier);
 
     /**
      * Return the type of modification this node is undergoing.
      *
      * @return Node modification type.
      */
-    ModificationType getModificationType();
+    @Nonnull ModificationType getModificationType();
 
     /**
      * Return the before-image of data corresponding to the node.