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.concurrent.ThreadPoolExecutor;
23  
24  /**
25   * <a href="SerialDestination.java.html"><b><i>View Source</i></b></a>
26   *
27   * <p>
28   * Destination that delivers a message to a list of message listeners one at a
29   * time.
30   * </p>
31   *
32   * @author Michael C. Han
33   *
34   */
35  public class SerialDestination extends ArrayDispatcherDestination {
36  
37      public SerialDestination(String name) {
38          super(name, _WORKERS_CORE_SIZE, _WORKERS_MAX_SIZE);
39      }
40  
41      protected void dispatch(
42          final MessageListener[] listeners, final Message message) {
43  
44          ThreadPoolExecutor threadPoolExecutor = getThreadPoolExecutor();
45  
46          Runnable runnable = new Runnable() {
47  
48              public void run() {
49                  for (MessageListener listener : listeners) {
50                      listener.receive(message);
51                  }
52              }
53  
54          };
55  
56          threadPoolExecutor.execute(runnable);
57      }
58  
59      private static final int _WORKERS_CORE_SIZE = 1;
60  
61      private static final int _WORKERS_MAX_SIZE = 1;
62  
63  }