ColumnComparator.java

/*
 *  -------------------------------------------------------------------------
 *  Copyright 2014 
 *  Centre for Information Modeling - Austrian Centre for Digital Humanities
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License
 *  -------------------------------------------------------------------------
 */

package org.emile.cirilo.gui.jtable;

import java.util.Comparator;
import java.util.Vector;


public class ColumnComparator
        implements Comparator {

    protected int index;

    protected boolean ascending;

    public ColumnComparator(int index, boolean ascending) {
        this.index = index;
        this.ascending = ascending;
    }

    public int compare(Object one, Object two) {
        if (one instanceof Vector && two instanceof Vector) {
            Vector vOne = (Vector) one;
            Vector vTwo = (Vector) two;
            Object oOne = vOne.elementAt(index);
            Object oTwo = vTwo.elementAt(index);
            if (oOne instanceof Comparable && oTwo instanceof Comparable) {
                Comparable cOne = (Comparable) oOne;
                Comparable cTwo = (Comparable) oTwo;
                if (ascending) {
                    return cOne.compareTo(cTwo);
                } else {
                    return cTwo.compareTo(cOne);
                }
            }
        }
        return 1;
    }
}