From: Robert Varga <rovarga@cisco.com>
Date: Fri, 5 Feb 2016 15:45:18 +0000 (+0100)
Subject: Use a singleton instead of an ArrayList
X-Git-Tag: release/boron~394
X-Git-Url: https://git.opendaylight.org/gerrit/gitweb?p=controller.git;a=commitdiff_plain;h=f2d49be57f39eeaf5b645cf0d9312b44c72e52ba

Use a singleton instead of an ArrayList

Does not force instantiation on a backing array, hence it is
simpler/faster.

Change-Id: I0ab8af0b298e67fd571d7c4be0be5fca20cafbb3
Signed-off-by: Robert Varga <rovarga@cisco.com>
---

diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/entityownership/EntityOwnershipListenerSupport.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/entityownership/EntityOwnershipListenerSupport.java
index c31f127349..dd83e65f1d 100644
--- a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/entityownership/EntityOwnershipListenerSupport.java
+++ b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/entityownership/EntityOwnershipListenerSupport.java
@@ -12,8 +12,8 @@ import akka.actor.ActorRef;
 import akka.actor.PoisonPill;
 import com.google.common.collect.HashMultimap;
 import com.google.common.collect.Multimap;
-import java.util.Arrays;
 import java.util.Collection;
+import java.util.Collections;
 import java.util.HashSet;
 import java.util.IdentityHashMap;
 import java.util.Map;
@@ -77,7 +77,7 @@ class EntityOwnershipListenerSupport {
 
     void notifyEntityOwnershipListener(Entity entity, boolean wasOwner, boolean isOwner, boolean hasOwner,
             EntityOwnershipListener listener) {
-        notifyListeners(entity, wasOwner, isOwner, hasOwner, Arrays.asList(listener));
+        notifyListeners(entity, wasOwner, isOwner, hasOwner, Collections.singleton(listener));
     }
 
     private void notifyListeners(Entity entity, String mapKey, boolean wasOwner, boolean isOwner, boolean hasOwner) {