01: /*
02: * JBoss, Home of Professional Open Source.
03: * Copyright 2006, Red Hat Middleware LLC, and individual contributors
04: * as indicated by the @author tags. See the copyright.txt file in the
05: * distribution for a full listing of individual contributors.
06: *
07: * This is free software; you can redistribute it and/or modify it
08: * under the terms of the GNU Lesser General Public License as
09: * 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.lang.reflect.InvocationTargetException;
25:
26: /**
27: * Comment
28: *
29: * @author <a href="mailto:bill@jboss.org">Bill Burke</a>
30: * @version $Revision: 57186 $
31: */
32: public class FutureProxy implements Future {
33: private Future delegate;
34: private boolean released = false;
35:
36: public void setDelegate(Future delegate) {
37: synchronized (this ) {
38: this .delegate = delegate;
39: if (released)
40: delegate.release();
41: this .notifyAll();
42: }
43: }
44:
45: public void release() {
46: synchronized (this ) {
47: if (delegate == null) {
48: released = true;
49: return;
50: }
51: }
52: delegate.release();
53: }
54:
55: public Object get() throws InterruptedException,
56: InvocationTargetException {
57: synchronized (this ) {
58: if (delegate == null)
59: this .wait();
60: if (delegate == null)
61: throw new RuntimeException(
62: "Failed to get delegate and timed out");
63: return delegate.get();
64: }
65: }
66:
67: public Object get(long milliseconds) throws TimeoutException,
68: InterruptedException, InvocationTargetException {
69: synchronized (this ) {
70: if (delegate == null) {
71: this .wait(milliseconds);
72: if (delegate == null)
73: throw new TimeoutException(
74: "Failed to get delegate and timed out");
75: }
76: }
77: return delegate.get(milliseconds);
78: }
79:
80: public boolean isDone() {
81: return delegate == null || delegate.isDone();
82: }
83:
84: }
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