SFSBStressBean


1   /**
2    * EasyBeans
3    * Copyright (C) 2006 Bull S.A.S.
4    * Contact: easybeans@objectweb.org
5    *
6    * This library is free software; you can redistribute it and/or
7    * modify it under the terms of the GNU Lesser General Public
8    * License as published by the Free Software Foundation; either
9    * version 2.1 of the License, or any later version.
10   *
11   * This library is distributed in the hope that it will be useful,
12   * but WITHOUT ANY WARRANTY; without even the implied warranty of
13   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14   * Lesser General Public License for more details.
15   *
16   * You should have received a copy of the GNU Lesser General Public
17   * License along with this library; if not, write to the Free Software
18   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
19   * USA
20   *
21   * --------------------------------------------------------------------------
22   * $Id: SFSBStressBean.java 1146 2006-10-10 12:47:48Z benoitf $
23   * --------------------------------------------------------------------------
24   */
25  
26  package org.objectweb.easybeans.tests.common.ejbs.stateful.containermanaged.basic;
27  
28  import javax.ejb.Stateful  ;
29  
30  /**
31   * Bean used for testing concurrency on stateful.
32   * Calls should be thread safe on a bean.
33   * @author Florent Benoit
34   */
35  @Stateful  
36  public class SFSBStressBean implements SFSBStressBeanRemote {
37  
38      /**
39       * Default value.
40       */
41      private static int value = 0;
42  
43      /**
44       * Sleep time (so synchro can be seen more quickly).
45       */
46      private static final int SLEEP = 100;
47  
48  
49      /**
50       * Init the value.
51       */
52      public void initValue() {
53          value = 0;
54      }
55  
56      /**
57       * Test if a method is thread safe.
58       * It should be ensured by the container (only 1 call on an instance of this bean at once)
59       */
60      public void testThreadSafe() {
61          value++;
62          try {
63              Thread.sleep(SLEEP);
64          } catch (InterruptedException   e) {
65              // TODO Auto-generated catch block
66              e.printStackTrace();
67          }
68          if (value > 1) {
69              throw new IllegalStateException  ("Not thread safe");
70          }
71          value--;
72      }
73  }
74
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