001/* 002 * Copyright 2002-2012 the original author or authors. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * https://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package org.springframework.scheduling.commonj; 018 019import commonj.work.Work; 020 021import org.springframework.scheduling.SchedulingAwareRunnable; 022import org.springframework.util.Assert; 023 024/** 025 * Simple Work adapter that delegates to a given Runnable. 026 * 027 * @author Juergen Hoeller 028 * @since 2.0 029 * @see commonj.work.Work 030 * @see java.lang.Runnable 031 */ 032public class DelegatingWork implements Work { 033 034 private final Runnable delegate; 035 036 037 /** 038 * Create a new DelegatingWork. 039 * @param delegate the Runnable implementation to delegate to 040 * (may be a SchedulingAwareRunnable for extended support) 041 * @see org.springframework.scheduling.SchedulingAwareRunnable 042 * @see #isDaemon() 043 */ 044 public DelegatingWork(Runnable delegate) { 045 Assert.notNull(delegate, "Delegate must not be null"); 046 this.delegate = delegate; 047 } 048 049 /** 050 * Return the wrapped Runnable implementation. 051 */ 052 public final Runnable getDelegate() { 053 return this.delegate; 054 } 055 056 057 /** 058 * Delegates execution to the underlying Runnable. 059 */ 060 @Override 061 public void run() { 062 this.delegate.run(); 063 } 064 065 /** 066 * This implementation delegates to 067 * {@link org.springframework.scheduling.SchedulingAwareRunnable#isLongLived()}, 068 * if available. 069 */ 070 @Override 071 public boolean isDaemon() { 072 return (this.delegate instanceof SchedulingAwareRunnable && 073 ((SchedulingAwareRunnable) this.delegate).isLongLived()); 074 } 075 076 /** 077 * This implementation is empty, since we expect the Runnable 078 * to terminate based on some specific shutdown signal. 079 */ 080 @Override 081 public void release() { 082 } 083 084}