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Java > Open Source Codes > org > jboss > aspects > asynch > AsynchMixin


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.asynch;
23
24 import java.io.Externalizable JavaDoc;
25 import java.io.IOException JavaDoc;
26 import java.io.ObjectInput JavaDoc;
27 import java.io.ObjectOutput JavaDoc;
28
29 /**
30  * Comment
31  *
32  * @author <a HREF="mailto:bill@jboss.org">Bill Burke</a>
33  * @version $Revision: 37406 $
34  */
35 public class AsynchMixin implements FutureHolder, AsynchProvider, Externalizable JavaDoc
36 {
37    private static final long serialVersionUID = 3408652015381364191L;
38
39    private transient ThreadLocal JavaDoc currentFuture = new ThreadLocal JavaDoc();
40
41    public AsynchMixin()
42    {
43    }
44
45    public void setFuture(Future future)
46    {
47       Future oldFuture = (Future) currentFuture.get();
48       try
49       {
50          if (oldFuture != null) oldFuture.release();
51       }
52       catch (Exception JavaDoc e)
53       {
54          // ignore
55 }
56       currentFuture.set(future);
57    }
58
59    public Future getFuture()
60    {
61       Future future = (Future) currentFuture.get();
62       currentFuture.set(null);
63       return future;
64    }
65
66    public void writeExternal(ObjectOutput JavaDoc out) throws IOException JavaDoc
67    {
68
69    }
70
71    public void readExternal(ObjectInput JavaDoc in) throws IOException JavaDoc, ClassNotFoundException JavaDoc
72    {
73       currentFuture = new ThreadLocal JavaDoc();
74    }
75 }
76
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