X-Git-Url: https://git.opendaylight.org/gerrit/gitweb?a=blobdiff_plain;f=opendaylight%2Fmd-sal%2Fsal-distributed-datastore%2Fsrc%2Fmain%2Fjava%2Forg%2Fopendaylight%2Fcontroller%2Fcluster%2Fdatastore%2Fmodification%2FMutableCompositeModification.java;h=f2a8c00d19035120b8bcac7b522d3d97465cd29e;hb=a3cecfd01d0ef8922530924e3ee9684eb03ee5d6;hp=6372b21befbb02cd81f30658c8f67f64fcc59a1e;hpb=0ed60f58d8a8d73544df74f5bb4f93c13cd3ca7d;p=controller.git

diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/modification/MutableCompositeModification.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/modification/MutableCompositeModification.java
index 6372b21bef..f2a8c00d19 100644
--- a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/modification/MutableCompositeModification.java
+++ b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/modification/MutableCompositeModification.java
@@ -13,6 +13,7 @@ import java.io.IOException;
 import java.io.ObjectInput;
 import java.io.ObjectOutput;
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 import org.opendaylight.controller.cluster.datastore.DataStoreVersions;
 import org.opendaylight.controller.cluster.datastore.messages.VersionedExternalizableMessage;
@@ -29,6 +30,7 @@ public class MutableCompositeModification extends VersionedExternalizableMessage
     private static final long serialVersionUID = 1L;
 
     private final List<Modification> modifications = new ArrayList<>();
+    private List<Modification> immutableModifications = null;
 
     public MutableCompositeModification() {
         this(DataStoreVersions.CURRENT_VERSION);
@@ -63,12 +65,23 @@ public class MutableCompositeModification extends VersionedExternalizableMessage
      * @param modification the modification to add.
      */
     public void addModification(Modification modification) {
+        Preconditions.checkNotNull(modification);
         modifications.add(modification);
     }
 
+    public void addModifications(Iterable<Modification> newMods) {
+        for (Modification mod : newMods) {
+            addModification(mod);
+        }
+    }
+
     @Override
     public List<Modification> getModifications() {
-        return modifications;
+        if (immutableModifications == null) {
+            immutableModifications = Collections.unmodifiableList(modifications);
+        }
+
+        return immutableModifications;
     }
 
     @Override