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'databene commons' is an open source Java library by Volker Bergmann.
It provides extensions to the Java core library by utility classes, abstract concepts
and concrete implementations.
/*
* Copyright (C) 2004-2014 Volker Bergmann ([email protected]).
* All rights reserved.
*
* 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.databene.commons.accessor;
import org.databene.commons.Accessor;
import java.util.Comparator;
/**
* Compares to objects by the values returned from an Accessor that is applied to them.
*
* Created: 23.02.2006 18:57:09
* @author Volker Bergmann
*/
public class AccessingComparator implements Comparator {
private Accessor accessor;
private Comparator comparator;
public AccessingComparator(Accessor accessor, Comparator comparator) {
this.accessor = accessor;
this.comparator = comparator;
}
@Override
public int compare(C o1, C o2) {
return comparator.compare(accessor.getValue(o1), accessor.getValue(o2));
}
}