1   /**
2    * Copyright (c) 2000-2008 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.concurrent.ThreadPoolExecutor;
26  
27  /**
28   * <a href="SerialDestination.java.html"><b><i>View Source</i></b></a>
29   *
30   * <p>
31   * Destination that delivers a message to a list of message listeners one at a
32   * time.
33   * </p>
34   *
35   * @author Michael C. Han
36   *
37   */
38  public class SerialDestination extends ParallelDestination {
39  
40      public SerialDestination(String name) {
41          super(name, _WORKERS_CORE_SIZE, _WORKERS_MAX_SIZE);
42      }
43  
44      protected void dispatch(
45          final MessageListener[] listeners, final String message) {
46  
47          ThreadPoolExecutor threadPoolExecutor = getThreadPoolExecutor();
48  
49          Runnable runnable = new Runnable() {
50  
51              public void run() {
52                  for (MessageListener listener : listeners) {
53                      listener.receive(message);
54                  }
55              }
56  
57          };
58  
59          threadPoolExecutor.execute(runnable);
60      }
61  
62      private static final int _WORKERS_CORE_SIZE = 1;
63  
64      private static final int _WORKERS_MAX_SIZE = 1;
65  
66  }