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


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 EDU.oswego.cs.dl.util.concurrent.FutureResult;
25 import org.jboss.aop.Dispatcher;
26 import org.jboss.util.id.GUID;
27
28 import java.lang.reflect.InvocationTargetException JavaDoc;
29
30 /**
31  * Comment
32  *
33  * @author <a HREF="mailto:bill@jboss.org">Bill Burke</a>
34  * @version $Revision: 37406 $
35  */
36 public class FutureImpl
37 implements RemotableFuture
38 {
39    private FutureResult result;
40    private GUID remoteObjectID;
41
42    public FutureImpl(FutureResult result)
43    {
44       this.result = result;
45    }
46
47    public void setRemoteObjectID(GUID remoteObjectID)
48    {
49       this.remoteObjectID = remoteObjectID;
50    }
51
52    public void release()
53    {
54       if (remoteObjectID != null)
55       {
56          Dispatcher.singleton.unregisterTarget(remoteObjectID);
57       }
58    }
59
60    public Object JavaDoc get() throws InterruptedException JavaDoc, InvocationTargetException JavaDoc
61    {
62       try
63       {
64          Object JavaDoc rtn = result.get();
65          release();
66          return rtn;
67       }
68       catch (InvocationTargetException JavaDoc e)
69       {
70          release();
71          throw e;
72       }
73    }
74
75    public Object JavaDoc get(long milliseconds) throws TimeoutException, InterruptedException JavaDoc, InvocationTargetException JavaDoc
76    {
77       try
78       {
79          Object JavaDoc rtn = result.timedGet(milliseconds);
80          release();
81          return rtn;
82       }
83       catch (EDU.oswego.cs.dl.util.concurrent.TimeoutException e)
84       {
85          throw new TimeoutException(e);
86       }
87       catch (InvocationTargetException JavaDoc e)
88       {
89          release();
90          throw e;
91       }
92    }
93
94    public boolean isDone()
95    {
96       return result.isReady();
97    }
98
99 }
100
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