SynchronousNotifier


1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  package org.apache.servicemix.beanflow.support;
18  
19  import java.util.ArrayList  ;
20  import java.util.List  ;
21  
22  /**
23   * A default {@link Notifier} which just performs the notifications
24   * synchronously as the state changes.
25   * 
26   * @version $Revision: $
27   */
28  public class SynchronousNotifier implements Notifier {
29      private List  <Runnable  > listeners = new ArrayList  <Runnable  >();
30  
31      public void addRunnable(Runnable   listener) {
32          synchronized (listeners) {
33              listeners.add(listener);
34          }
35      }
36  
37      public void removeRunnable(Runnable   listener) {
38          synchronized (listeners) {
39              listeners.remove(listener);
40          }
41      }
42  
43      public void run() {
44          Runnable  [] array = null;
45          synchronized (listeners) {
46              array = new Runnable  [listeners.size()];
47              listeners.toArray(array);
48          }
49          for (Runnable   listener : array) {
50              listener.run();
51          }
52      }
53  
54  }
55
A to Z: JavaDoc & Examples Daily Java News & Articles Open Source Projects Open Source Codes Free Computer Books Remove Frame
Popular Tags