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Java > Open Source Codes > org > jboss > aspects > versioned > TxCache


1 /*
2   * JBoss, Home of Professional Open Source
3   * Copyright 2005, JBoss Inc., and individual contributors as indicated
4   * by the @authors tag. See the copyright.txt in the distribution for a
5   * full listing of individual contributors.
6   *
7   * This is free software; you can redistribute it and/or modify it
8   * under the terms of the GNU Lesser General Public License as
9   * published by the Free Software Foundation; either version 2.1 of
10   * the License, or (at your option) any later version.
11   *
12   * This software is distributed in the hope that it will be useful,
13   * but WITHOUT ANY WARRANTY; without even the implied warranty of
14   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15   * Lesser General Public License for more details.
16   *
17   * You should have received a copy of the GNU Lesser General Public
18   * License along with this software; if not, write to the Free
19   * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20   * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21   */
22 package org.jboss.aspects.versioned;
23 import org.jboss.util.LRUCachePolicy;
24
25 /**
26  * This is a LRU cache. The TxCache itself is not transactional
27  * but any accesses to objects within the cache ARE transactional.
28  */
29 public class TxCache extends LRUCachePolicy
30 {
31    protected long lockTimeout;
32    protected LocalSynchronizationManager synchManager;
33    protected DistributedVersionManager versionManager;
34    public TxCache(int maxSize, long lockTimeout)
35    {
36       super(2, maxSize);
37       this.lockTimeout = lockTimeout;
38       synchManager = new LocalSynchronizationManager(null);
39       versionManager = new DistributedVersionManager(lockTimeout, synchManager);
40       this.create();
41       this.start();
42    }
43
44    public void insert(Object JavaDoc key, Object JavaDoc obj)
45    {
46       try
47       {
48          Object JavaDoc versioned = versionManager.makeVersioned(obj);
49          super.insert(key, versioned);
50       }
51       catch (Exception JavaDoc ex)
52       {
53          throw new RuntimeException JavaDoc(ex);
54       }
55    }
56 }
57
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