/*
* 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 selects events that have not been sent by specific entities.
*
* @author Marcos Dias de Assuncao
* @since CloudSim Toolkit 1.0
* @see PredicateFrom
* @see Predicate
*/
public class PredicateNotFrom extends Predicate {
/** The ids. */
private final int[] ids;
/**
* Constructor used to select events that were not sent by a specific entity.
*
* @param sourceId the id number of the source entity
*/
public PredicateNotFrom(int sourceId) {
ids = new int[] { sourceId };
}
/**
* Constructor used to select events that were not sent by any entity from a given set.
*
* @param sourceIds the set of id numbers of the source entities
*/
public PredicateNotFrom(int[] sourceIds) {
ids = sourceIds.clone();
}
/**
* 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) {
int src = ev.getSource();
for (int id : ids) {
if (src == id) {
return false;
}
}
return true;
}
}