/*
 * Copyright 1999-2006 University of Chicago
 *
 * 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.globus.ftp.dc;

public abstract class Task {

    protected boolean complete = false;
    protected Exception exception;

    public abstract void execute() throws Exception;

    public void stop() {
    }

    public synchronized void setComplete(Exception e) {
	complete = true;
	exception = e;
	notify();
    }

    public synchronized Exception waitFor() {
	while (!complete) {
	    try {
		wait();
	    } catch (Exception e) {
		return e;
	    }
	}
	return exception;
    }

}
