Spring Framework example source code file (DelegatingWork.java)

This example Spring Framework source code file (DelegatingWork.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Spring Framework tags/keywords

delegate, delegate, delegatingwork, delegatingwork, runnable, runnable, schedulingawarerunnable, schedulingawarerunnable, work

The Spring Framework DelegatingWork.java source code

/*
 * Copyright 2002-2007 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.scheduling.commonj;

import commonj.work.Work;

import org.springframework.scheduling.SchedulingAwareRunnable;
import org.springframework.util.Assert;

/**
 * Simple Work adapter that delegates to a given Runnable.
 *
 * @author Juergen Hoeller
 * @since 2.0
 * @see commonj.work.Work
 * @see java.lang.Runnable
 */
public class DelegatingWork implements Work {

	private final Runnable delegate;


	/**
	 * Create a new DelegatingWork.
	 * @param delegate the Runnable implementation to delegate to
	 * (may be a SchedulingAwareRunnable for extended support)
	 * @see org.springframework.scheduling.SchedulingAwareRunnable
	 * @see #isDaemon()
	 */
	public DelegatingWork(Runnable delegate) {
		Assert.notNull(delegate, "Delegate must not be null");
		this.delegate = delegate;
	}

	/**
	 * Return the wrapped Runnable implementation.
	 */
	public final Runnable getDelegate() {
		return this.delegate;
	}


	/**
	 * Delegates execution to the underlying Runnable.
	 */
	public void run() {
		this.delegate.run();
	}

	/**
	 * This implementation delegates to
	 * {@link org.springframework.scheduling.SchedulingAwareRunnable#isLongLived()},
	 * if available.
	 */
	public boolean isDaemon() {
		return (this.delegate instanceof SchedulingAwareRunnable &&
				((SchedulingAwareRunnable) this.delegate).isLongLived());
	}

	/**
	 * This implementation is empty, since we expect the Runnable
	 * to terminate based on some specific shutdown signal.
	 */
	public void release() {
	}

}