recordcomparator.java

jboss规则引擎

package org.drools.leaps.util;

/*
 * Copyright 2005 JBoss Inc
 * 
 * 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.
 */


import java.io.Serializable;
import java.util.Comparator;

/**
 * this class wraps object comparator to sort records holding given objects in
 * a list
 * 
 * @author Alexander Bagerman
 * 
 */

class RecordComparator implements Comparator, Serializable {
    private Comparator objectComparator;

    RecordComparator(Comparator objectComparator) {
        this.objectComparator = objectComparator;
    }

    public int compare( Object record1, Object record2 ) {
        return this.objectComparator.compare( ( (TableRecord) record1 ).object,
                                              ( (TableRecord) record2 ).object );
    }

}