GlobalLockCoordinatorFactory


1   package org.objectweb.perseus.concurrency.distributed.globallock.lib;
2   
3   
4   /**
5    * Copyright (C) 2003-2004
6    * - France Telecom R&D
7    *
8    * This library is free software; you can redistribute it and/or
9    * modify it under the terms of the GNU Lesser General Public
10   * License as published by the Free Software Foundation; either
11   * version 2 of the License, or (at your option) any later version.
12   *
13   * This library is distributed in the hope that it will be useful,
14   * but WITHOUT ANY WARRANTY; without even the implied warranty of
15   * MERCHANTABILITY or FITNESS FOR AE PARTICULAR PURPOSE.  See the GNU
16   * Lesser General Public License for more details.
17   *
18   * You should have received a copy of the GNU Lesser General Public
19   * License along with this library; if not, write to the Free Software
20   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
21   *
22   * Release: 1.0
23   *
24   * Authors: Olivier Lobry (olivier.lobry@rd.francetelecom.com)
25   *
26   */
27  
28  
29  import org.objectweb.perseus.distribution.api.DistResCoordinator;
30  import org.objectweb.perseus.distribution.api.DistResCoordinatorService;
31  import org.objectweb.perseus.distribution.api.DistResCoordinatorFactory;
32  import org.objectweb.perseus.concurrency.distributed.globallock.lib.GlobalLockCoordinator;
33  import org.objectweb.perseus.concurrency.lib.LockValue;
34  import org.objectweb.perseus.concurrency.lib.RWLockValue;
35  
36  import java.io.Serializable  ;
37  
38  /**
39   * This class creates one coordinator per each global lock
40   */
41  
42  public class GlobalLockCoordinatorFactory implements DistResCoordinatorFactory {
43      LockValue lockValue;
44      public GlobalLockCoordinatorFactory() {
45          this(new RWLockValue());
46      }
47      public GlobalLockCoordinatorFactory(LockValue lockValue) {
48          this.lockValue = lockValue;
49      }
50      public DistResCoordinator newCoordinator(DistResCoordinatorService drcs,
51                                               Serializable   nodeId, Object   copy,
52                                               Object   resId) {
53          GlobalLockCoordinator glc;
54  
55          if (copy == null) {
56              glc = new GlobalLockCoordinator(resId, drcs, lockValue);
57          } else {
58              glc = (GlobalLockCoordinator) copy;
59              glc.initCopy(resId, drcs, lockValue);
60          }
61  
62          return glc;
63      }
64  }
65
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