PredicateNone.java

/*
 * Title:        CloudSim Toolkit
 * Description:  CloudSim (Cloud Simulation) Toolkit for Modeling and Simulation of Clouds
 * Licence:      GPL - http://www.gnu.org/copyleft/gpl.html
 *
 * Copyright (c) 2009-2012, The University of Melbourne, Australia
 */

package org.cloudbus.cloudsim.core.predicates;

import org.cloudbus.cloudsim.core.SimEvent;

/**
 * A predicate which will <b>not</b> match any event on the deferred event queue. There is a
 * publicly accessible instance of this predicate in the {@link Simulation} class, called
 * {@link Simulation#SIM_NONE}, so the user does not need to create any new instances. The idea of
 * simulation predicates was copied from SimJava 2.
 * 
 * @author Marcos Dias de Assuncao
 * @since CloudSim Toolkit 1.0
 * @see Predicate
 * @see Simulation
 */
public class PredicateNone extends Predicate {

	/**
	 * The match function called by {@link Simulation}, not used directly by the user.
	 * 
	 * @param ev the event to check
	 * @return <code>true</code> if the event matches the predicate, <code>false</code> otherwise
	 */
	@Override
	public boolean match(SimEvent ev) {
		return false;
	}

}