com.codecrate.shard.util.ComparableComparator.java Source code

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Here is the source code for com.codecrate.shard.util.ComparableComparator.java

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/*
 * Copyright 2002-2004 the original author or authors.
 *
 * 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 com.codecrate.shard.util;

import java.util.Comparator;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

public class ComparableComparator implements Comparator {
    private static final Log LOG = LogFactory.getLog(ComparableComparator.class);

    public int compare(Object object1, Object object2) {
        if (!(object1 instanceof Comparable)) {
            LOG.warn("Object is not comparable: " + object1.getClass());
            return 0;
        }
        Comparable compare1 = (Comparable) object1;
        Comparable compare2 = (Comparable) object2;

        return compare1.compareTo(compare2);
    }
}