/**
* <a href="http://www.openolat.org">
* OpenOLAT - Online Learning and Training</a><br>
* <p>
* Licensed under the Apache License, Version 2.0 (the "License"); <br>
* you may not use this file except in compliance with the License.<br>
* You may obtain a copy of the License at the
* <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache homepage</a>
* <p>
* Unless required by applicable law or agreed to in writing,<br>
* software distributed under the License is distributed on an "AS IS" BASIS, <br>
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. <br>
* See the License for the specific language governing permissions and <br>
* limitations under the License.
* <p>
* Initial code contributed and copyrighted by<br>
* frentix GmbH, http://www.frentix.com
* <p>
*/
package org.olat.modules.webFeed.models;
import java.util.Comparator;
import java.util.Date;
/**
* Compares the publish date of two items.
* <P>
* Initial Date: Aug 4, 2009 <br>
*
* @author gwassmann
*/
public class ItemPublishDateComparator implements Comparator<Item> {
/**
* @see java.util.Comparator#compare(java.lang.Object, java.lang.Object)
*/
public int compare(Item a, Item b) {
// reverse chronological order
Date d1 = a.getPublishDate();
Date d2 = b.getPublishDate();
if(d1 == null) return 1;
if(d2 == null) return -1;
return d2.compareTo(d1);
}
}