1   /**
2    * Copyright (c) 2000-2010 Liferay, Inc. All rights reserved.
3    *
4    * The contents of this file are subject to the terms of the Liferay Enterprise
5    * Subscription License ("License"). You may not use this file except in
6    * compliance with the License. You can obtain a copy of the License by
7    * contacting Liferay, Inc. See the License for the specific language governing
8    * permissions and limitations under the License, including but not limited to
9    * distribution rights of the Software.
10   *
11   *
12   *
13   */
14  
15  package com.liferay.portal.kernel.cache.cluster;
16  
17  import java.util.Comparator;
18  
19  /**
20   * <a href="PortalCacheClusterEventCoalesceComparator.java.html"><b><i>View
21   * Source</i></b></a>
22   *
23   * @author Shuyang Zhou
24   */
25  public class PortalCacheClusterEventCoalesceComparator
26      implements Comparator<PortalCacheClusterEvent> {
27  
28      public int compare(
29          PortalCacheClusterEvent portalCacheClusterEvent1,
30          PortalCacheClusterEvent portalCacheClusterEvent2) {
31  
32          if ((portalCacheClusterEvent1 == null) ||
33              (portalCacheClusterEvent2 == null)) {
34  
35              return 1;
36          }
37  
38          if (portalCacheClusterEvent1.getCacheName().equals(
39                  portalCacheClusterEvent2.getCacheName()) &&
40              portalCacheClusterEvent1.getElementKey().equals(
41                  portalCacheClusterEvent2.getElementKey())) {
42  
43              return 0;
44          }
45          else {
46              return -1;
47          }
48      }
49  
50  }