directexecutor.java

个人认为是最好的Java论坛源码

/*
 * Copyright (c) 2003, Rafael Steil
 * All rights reserved.

 * Redistribution and use in source and binary forms, 
 * with or without modification, are permitted provided 
 * that the following conditions are met:

 * 1) Redistributions of source code must retain the above 
 * copyright notice, this list of conditions and the 
 * following  disclaimer.
 * 2)  Redistributions in binary form must reproduce the 
 * above copyright notice, this list of conditions and 
 * the following disclaimer in the documentation and/or 
 * other materials provided with the distribution.
 * 3) Neither the name of "Rafael Steil" nor 
 * the names of its contributors may be used to endorse 
 * or promote products derived from this software without 
 * specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT 
 * HOLDERS AND CONTRIBUTORS "AS IS" AND ANY 
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, 
 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 
 * THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE 
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES 
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 
 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 
 * IN CONTRACT, STRICT LIABILITY, OR TORT 
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
 * 
 * This file creation date: Jan 28, 2004
 * net.jforum.util.concurrent.executor.DirectExecutor.java
 * The JForum Project
 * http://www.jforum.net
 * 
 * $Id: DirectExecutor.java,v 1.3 2004/08/03 14:30:40 pieter2 Exp $
 */
package net.jforum.util.concurrent.executor;

import net.jforum.util.concurrent.Executor;
import net.jforum.util.concurrent.Result;
import net.jforum.util.concurrent.Task;

/** 
 * Implements a direct executor
 * 
 * @author Rodrigo Kumpera
 */
public class DirectExecutor implements Executor 
{
	public DirectExecutor() 
	{
		super();
	}

	public void execute(Task task) 
	{
		try {
			task.execute();
		} 
		catch(Exception e) {
			//if they don't care, why should I?
		}
	}

	public Result executeWithResult(Task task) 
	{
		Object result = null;
		Exception ex = null;
		
		try {
			result = task.execute();
		} catch(Exception e) {
			ex = e;
		}
		
		return new ReadyResult(result, ex);
	}

}