TableComparator.java

/**
 * <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.core.gui.components.table;

import java.util.Comparator;

/**
 * 
 * @author srosse
 *
 */
public class TableComparator implements Comparator<Integer> {

	private final boolean sortAscending;
	private final ColumnDescriptor cd;
	
	public TableComparator(ColumnDescriptor cd, boolean sortAscending) {
		this.cd = cd;
		this.sortAscending = sortAscending;
	}
	
	@Override
	public int compare(Integer a, Integer b) {
		int rowa = a.intValue();
		int rowb = b.intValue();
		return (sortAscending ? cd.compareTo(rowa, rowb) : cd.compareTo(rowb, rowa));
	}
}