/**
* Copyright (c) Codice Foundation
* <p/>
* This is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser
* General Public License as published by the Free Software Foundation, either version 3 of the
* License, or any later version.
* <p/>
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
* even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details. A copy of the GNU Lesser General Public License
* is distributed along with this program and can be found at
* <http://www.gnu.org/licenses/lgpl.html>.
*/
package ddf.catalog.util.impl;
import java.util.Comparator;
import org.osgi.framework.ServiceReference;
/**
* Comparator for OSGi {@link ServiceReference} objects.
*
*/
public class ServiceComparator implements Comparator<ServiceReference> {
/**
* Compares this ServiceReference with the specified ServiceReference for order using the OSGi
* {@link ServiceReference} compare method.
*
* If this ServiceReference and the specified ServiceReference have the same service id they are
* equal. This ServiceReference is less than the specified ServiceReference if it has a lower
* service ranking and greater if it has a higher service ranking. Otherwise, if this
* ServiceReference and the specified ServiceReference have the same service ranking, this
* ServiceReference is less than the specified ServiceReference if it has a higher service id
* and greater if it has a lower service id.
*/
@Override
public int compare(ServiceReference ref1, ServiceReference ref2) {
return ref2.compareTo(ref1);
}
}