BUG-4295: instantiate MERGE operations lazily

[yangtools.git] / yang / yang-data-impl / src / main / java / org / opendaylight / yangtools / yang / data / impl / schema / tree / ContainerModificationStrategy.java

diff --git a/yang/yang-data-impl/src/main/java/org/opendaylight/yangtools/yang/data/impl/schema/tree/ContainerModificationStrategy.java b/yang/yang-data-impl/src/main/java/org/opendaylight/yangtools/yang/data/impl/schema/tree/ContainerModificationStrategy.java
index 58671b8c3e84460690d20ca37d2e5925c30b7795..8e28fdd86810222fd84dd49893c7dc163d04127b 100644 (file)
--- a/yang/yang-data-impl/src/main/java/org/opendaylight/yangtools/yang/data/impl/schema/tree/ContainerModificationStrategy.java
+++ b/yang/yang-data-impl/src/main/java/org/opendaylight/yangtools/yang/data/impl/schema/tree/ContainerModificationStrategy.java
@@ -8,6 +8,8 @@
 package org.opendaylight.yangtools.yang.data.impl.schema.tree;
 
 import static com.google.common.base.Preconditions.checkArgument;
+
+import com.google.common.base.Preconditions;
 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
 import org.opendaylight.yangtools.yang.data.api.schema.tree.TreeType;
@@ -30,4 +32,11 @@ class ContainerModificationStrategy extends AbstractDataNodeContainerModificatio
         checkArgument(original instanceof ContainerNode);
         return ImmutableContainerNodeBuilder.create((ContainerNode) original);
     }
+
+    @Override
+    protected NormalizedNode<?, ?> createEmptyValue(NormalizedNode<?, ?> original) {
+        Preconditions.checkArgument(original instanceof ContainerNode);
+        return ImmutableContainerNodeBuilder.create().withNodeIdentifier(((ContainerNode) original).getIdentifier())
+                .build();
+    }
 }