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1   /*
2    * Copyright 2002,2004 The Apache Software Foundation.
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *      http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  
17  package org.apache.commons.jelly.tags.threads;
18  
19  import org.apache.commons.jelly.JellyTagException;
20  import org.apache.commons.jelly.XMLOutput;
21  
22  /***
23   * This calls mutex.wait() on the mutex passed in via the "mutex" attribute.
24   *
25   * @author <a href="mailto:jason@jhorman.org">Jason Horman</a>
26   */
27  
28  public class WaitTag extends UseMutexTag {
29      /*** How long should the wait last. If <=0 it lasts until a notify. */
30      private long timeout = -1;
31  
32      /*** Start waiting */
33      public void useMutex(Object mutex, XMLOutput output) throws JellyTagException {
34          try {
35              if (timeout > 0) {
36                  mutex.wait(timeout);
37              } else {
38                  mutex.wait();
39              }
40          }
41          catch (InterruptedException e) {
42              throw new JellyTagException(e);
43          }
44      }
45  
46      /***
47       * Set how long the wait should last. If <= 0 the wait will last
48       * until a notify occurs.
49       * @param timeout in millis
50       */
51      public void setTimeout(long timeout) {
52          this.timeout = timeout;
53      }
54  }