1   /**
2    * Copyright (c) 2000-2010 Liferay, Inc. All rights reserved.
3    *
4    * This library is free software; you can redistribute it and/or modify it under
5    * the terms of the GNU Lesser General Public License as published by the Free
6    * Software Foundation; either version 2.1 of the License, or (at your option)
7    * any later version.
8    *
9    * This library is distributed in the hope that it will be useful, but WITHOUT
10   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
11   * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
12   * details.
13   */
14  
15  package com.liferay.portal.kernel.messaging;
16  
17  import com.liferay.portal.kernel.util.ThreadLocalRegistry;
18  
19  import java.util.Set;
20  import java.util.concurrent.ThreadPoolExecutor;
21  
22  /**
23   * <a href="SerialDestination.java.html"><b><i>View Source</i></b></a>
24   *
25   * <p>
26   * Destination that delivers a message to a list of message listeners one at a
27   * time.
28   * </p>
29   *
30   * @author Michael C. Han
31   */
32  public class SerialDestination extends BaseDestination {
33  
34      public SerialDestination() {
35      }
36  
37      /**
38       * @deprecated
39       */
40      public SerialDestination(String name) {
41          super(name, _WORKERS_CORE_SIZE, _WORKERS_MAX_SIZE);
42      }
43  
44      protected void dispatch(
45          final Set<MessageListener> messageListeners, final Message message) {
46  
47          ThreadPoolExecutor threadPoolExecutor = getThreadPoolExecutor();
48  
49          Runnable runnable = new Runnable() {
50  
51              public void run() {
52                  try {
53                      for (MessageListener messageListener : messageListeners) {
54                          messageListener.receive(message);
55                      }
56                  }
57                  finally {
58                      ThreadLocalRegistry.resetThreadLocals();
59                  }
60              }
61  
62          };
63  
64          threadPoolExecutor.execute(runnable);
65      }
66  
67      private static final int _WORKERS_CORE_SIZE = 1;
68  
69      private static final int _WORKERS_MAX_SIZE = 1;
70  
71  }