001/**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.camel.util;
018
019import java.util.Comparator;
020
021import org.apache.camel.Ordered;
022
023/**
024 * A comparator to sort {@link Ordered}
025 *
026 * @version 
027 */
028public final class OrderedComparator implements Comparator<Object> {
029
030    private final boolean reverse;
031
032    public OrderedComparator() {
033        this(false);
034    }
035
036    public OrderedComparator(boolean reverse) {
037        this.reverse = reverse;
038    }
039
040    public int compare(Object o1, Object o2) {
041        Integer num1 = 0;
042        Integer num2 = 0;
043        if (o1 instanceof Ordered) {
044            num1 = ((Ordered) o1).getOrder();
045        }
046        if (o2 instanceof Ordered) {
047            num2 = ((Ordered) o2).getOrder();
048        }
049        int answer = num1.compareTo(num2);
050        return reverse ? -1 * answer : answer;
051    }
052}