2 * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.controller.sal.binding.impl;
10 import org.opendaylight.controller.sal.binding.api.NotificationListener;
11 import org.opendaylight.yangtools.yang.binding.Notification;
13 import com.google.common.base.Preconditions;
16 * An aggregated listener registration. This is a result of registering an invoker which can handle multiple
17 * interfaces at the same time. In order to support correct delivery, we need to maintain per-type registrations
18 * which get squashed if a notification which implements multiple interfaces is encountered.
20 * We take care of that by implementing alternate {@link #hashCode()}/{@link #equals(Object)}, which resolve
21 * to the backing aggregator.
23 * @param <N> Notification type
24 * @param <A> Aggregator type
26 abstract class AggregatedNotificationListenerRegistration<N extends Notification, A> extends AbstractNotificationListenerRegistration<N> {
27 private final A aggregator;
29 protected AggregatedNotificationListenerRegistration(final Class<? extends Notification> type, final NotificationListener<N> listener, final A aggregator) {
30 super(type, listener);
31 this.aggregator = Preconditions.checkNotNull(aggregator);
34 protected A getAggregator() {
39 public int hashCode() {
40 return aggregator.hashCode();
44 public boolean equals(final Object obj) {
51 if (!this.getClass().equals(obj.getClass())) {
55 return aggregator.equals(((AggregatedNotificationListenerRegistration<?, ?>)obj).aggregator);