1   /**
2    * Copyright (c) 2000-2009 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   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
12   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
14   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
15   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
16   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
17   * SOFTWARE.
18   */
19  
20  package com.liferay.portal.kernel.messaging;
21  
22  import java.util.Set;
23  import java.util.concurrent.ThreadPoolExecutor;
24  
25  /**
26   * <a href="SerialDestination.java.html"><b><i>View Source</i></b></a>
27   *
28   * <p>
29   * Destination that delivers a message to a list of message listeners one at a
30   * time.
31   * </p>
32   *
33   * @author Michael C. Han
34   *
35   */
36  public class SerialDestination extends ArrayDispatcherDestination {
37  
38      public SerialDestination(String name) {
39          super(name, _WORKERS_CORE_SIZE, _WORKERS_MAX_SIZE);
40      }
41  
42      protected void dispatch(
43          final Set<MessageListener> listeners, final Message message) {
44  
45          ThreadPoolExecutor threadPoolExecutor = getThreadPoolExecutor();
46  
47          Runnable runnable = new Runnable() {
48  
49              public void run() {
50                  for (MessageListener listener : listeners) {
51                      listener.receive(message);
52                  }
53              }
54  
55          };
56  
57          threadPoolExecutor.execute(runnable);
58      }
59  
60      private static final int _WORKERS_CORE_SIZE = 1;
61  
62      private static final int _WORKERS_MAX_SIZE = 1;
63  
64  }