01: /*
02: * Copyright 2002-2007 the original author or authors.
03: *
04: * Licensed under the Apache License, Version 2.0 (the "License");
05: * you may not use this file except in compliance with the License.
06: * You may obtain a copy of the License at
07: *
08: * http://www.apache.org/licenses/LICENSE-2.0
09: *
10: * Unless required by applicable law or agreed to in writing, software
11: * distributed under the License is distributed on an "AS IS" BASIS,
12: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13: * See the License for the specific language governing permissions and
14: * limitations under the License.
15: */
16:
17: package org.springframework.scheduling.commonj;
18:
19: import commonj.work.Work;
20:
21: import org.springframework.scheduling.SchedulingAwareRunnable;
22: import org.springframework.util.Assert;
23:
24: /**
25: * Simple Work adapter that delegates to a given Runnable.
26: *
27: * @author Juergen Hoeller
28: * @since 2.0
29: * @see commonj.work.Work
30: * @see java.lang.Runnable
31: */
32: public class DelegatingWork implements Work {
33:
34: private final Runnable delegate;
35:
36: /**
37: * Create a new DelegatingWork.
38: * @param delegate the Runnable implementation to delegate to
39: * (may be a SchedulingAwareRunnable for extended support)
40: * @see org.springframework.scheduling.SchedulingAwareRunnable
41: * @see #isDaemon()
42: */
43: public DelegatingWork(Runnable delegate) {
44: Assert.notNull(delegate, "Delegate must not be null");
45: this .delegate = delegate;
46: }
47:
48: /**
49: * Return the wrapped Runnable implementation.
50: */
51: public final Runnable getDelegate() {
52: return this .delegate;
53: }
54:
55: /**
56: * Delegates execution to the underlying Runnable.
57: */
58: public void run() {
59: this .delegate.run();
60: }
61:
62: /**
63: * This implementation delegates to
64: * {@link org.springframework.scheduling.SchedulingAwareRunnable#isLongLived()},
65: * if available.
66: */
67: public boolean isDaemon() {
68: return (this .delegate instanceof SchedulingAwareRunnable && ((SchedulingAwareRunnable) this .delegate)
69: .isLongLived());
70: }
71:
72: /**
73: * This implementation is empty, since we expect the Runnable
74: * to terminate based on some specific shutdown signal.
75: */
76: public void release() {
77: }
78:
79: }
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