Merge "Bug 499: Added support for old DOM Broker APIs."

[controller.git] / opendaylight / md-sal / sal-common-impl / src / main / java / org / opendaylight / controller / md / sal / common / impl / ListenerRegistry.java

diff --git a/opendaylight/md-sal/sal-common-impl/src/main/java/org/opendaylight/controller/md/sal/common/impl/ListenerRegistry.java b/opendaylight/md-sal/sal-common-impl/src/main/java/org/opendaylight/controller/md/sal/common/impl/ListenerRegistry.java
index d884dc81e0865f83242602c1cc422957e6a569eb..f337b5509e1a4cda6d4c1488bef048be5d8adeef 100644 (file)
--- a/opendaylight/md-sal/sal-common-impl/src/main/java/org/opendaylight/controller/md/sal/common/impl/ListenerRegistry.java
+++ b/opendaylight/md-sal/sal-common-impl/src/main/java/org/opendaylight/controller/md/sal/common/impl/ListenerRegistry.java
@@ -1,12 +1,18 @@
+/*
+ * Copyright (c) 2014 Cisco Systems, Inc. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
 package org.opendaylight.controller.md.sal.common.impl;
 
+import static com.google.common.base.Preconditions.checkNotNull;
+
 import java.util.Collections;
 import java.util.EventListener;
 import java.util.HashSet;
 import java.util.Set;
-import java.util.concurrent.ConcurrentHashMap;
-
-import static com.google.common.base.Preconditions.*;
 
 import org.opendaylight.yangtools.concepts.AbstractObjectRegistration;
 import org.opendaylight.yangtools.concepts.ListenerRegistration;
@@ -25,15 +31,15 @@ public class ListenerRegistry<T extends EventListener> {
         return unmodifiableView;
     }
 
-    
+
     public ListenerRegistration<T> register(T listener) {
         checkNotNull(listener, "Listener should not be null.");
         ListenerRegistrationImpl<T> ret = new ListenerRegistrationImpl<T>(listener);
         listeners.add(ret);
         return ret;
     }
-    
-    
+
+
     @SuppressWarnings("rawtypes")
     private void remove(ListenerRegistrationImpl registration) {
         listeners.remove(registration);