1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.kernel.messaging;
24  
25  import java.util.Set;
26  import java.util.concurrent.ThreadPoolExecutor;
27  
28  /**
29   * <a href="SerialDestination.java.html"><b><i>View Source</i></b></a>
30   *
31   * <p>
32   * Destination that delivers a message to a list of message listeners one at a
33   * time.
34   * </p>
35   *
36   * @author Michael C. Han
37   *
38   */
39  public class SerialDestination extends ArrayDispatcherDestination {
40  
41      public SerialDestination(String name) {
42          super(name, _WORKERS_CORE_SIZE, _WORKERS_MAX_SIZE);
43      }
44  
45      protected void dispatch(
46          final Set<MessageListener> listeners, final Message message) {
47  
48          ThreadPoolExecutor threadPoolExecutor = getThreadPoolExecutor();
49  
50          Runnable runnable = new Runnable() {
51  
52              public void run() {
53                  for (MessageListener listener : listeners) {
54                      listener.receive(message);
55                  }
56              }
57  
58          };
59  
60          threadPoolExecutor.execute(runnable);
61      }
62  
63      private static final int _WORKERS_CORE_SIZE = 1;
64  
65      private static final int _WORKERS_MAX_SIZE = 1;
66  
67  }