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The basic runtime tools and interfaces for intarsys components.

There is a newer version: 4.11

/*
 * Copyright (c) 2007, intarsys consulting GmbH
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 *
 * - 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.
 *
 * - Neither the name of intarsys 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.
 */
package de.intarsys.tools.concurrent;

import java.util.concurrent.Callable;

public class GenericFutureTask extends CallbackFutureTask {

	final private Callable computeFunctor;

	final private Runnable undoFunctor;

	public GenericFutureTask(Callable computeFunctor) {
		super(null);
		this.computeFunctor = computeFunctor;
		this.undoFunctor = null;
	}

	public GenericFutureTask(Callable computeFunctor, ITaskListener callback) {
		super(callback);
		this.computeFunctor = computeFunctor;
		this.undoFunctor = null;
	}

	public GenericFutureTask(Callable computeFunctor, Runnable undoFunctor) {
		super(null);
		this.computeFunctor = computeFunctor;
		this.undoFunctor = undoFunctor;
	}

	public GenericFutureTask(Callable computeFunctor, Runnable undoFunctor,
			ITaskListener callback) {
		super(callback);
		this.computeFunctor = computeFunctor;
		this.undoFunctor = undoFunctor;
	}

	@Override
	protected Object compute() throws Exception {
		if (computeFunctor != null) {
			return computeFunctor.call();
		}
		return null;
	}

	@Override
	protected void undo() {
		if (undoFunctor != null) {
			undoFunctor.run();
		}
	}

}