/**
 * The contents of this file are subject to the OpenMRS Public License
 * Version 1.0 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * http://license.openmrs.org
 *
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
 * License for the specific language governing rights and limitations
 * under the License.
 *
 * Copyright (C) OpenMRS, LLC.  All Rights Reserved.
 */
package org.openmrs.scheduler.tasks;

/**
 * Implementation of a task that writes "Hello World" to a log file.
 * 
 * @version 1.0
 */
public class HelloWorldTask extends AbstractTask {
	
	// Thread
	private Thread thread;
	
	private boolean started;
	
	/**
	 * Public constructor.
	 */
	public HelloWorldTask() {
		thread = new Thread(new HelloWorldThread());
	}
	
	/**
	 * Illustrates stateless functionality as simply as possible. Not very useful in our system,
	 * except maybe as a polling thread that checks internet connectivity by opening a connection to
	 * an external URL. But even that isn't very useful unless it tells someone or something about
	 * the connectivity (i.e. calls another service method)
	 */
	public void execute() {
		synchronized (thread) {
			if (!started) {
				thread.start();
				started = true;
			}
		}
	}
}