/*
* Copyright 2002-2005 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 net.sf.sojo.common;
import java.util.Comparator;
/**
* Is a implementation of <code>java.util.Comparator</code>, with delegate the compare-method to the
* <code>ObjectUtil.compareTo(obj1, obj2)</code> method.
*
* @author linke
*
*/
public final class GenericComparator implements Comparator {
private ObjectUtil objectUtil = new ObjectUtil();
/**
* This is importend for ordered Set. By equals result by compare-method
* is object NO added to Set.
*/
private boolean getUnEqualsByEquals = false;
public GenericComparator() {}
public GenericComparator(boolean pvGetUnEqualsByEquals) {
getUnEqualsByEquals = pvGetUnEqualsByEquals;
}
public int compare(Object pvObject1, Object pvObject2) {
int lvResult = objectUtil.compareTo(pvObject1, pvObject2);
if (lvResult == 0 && getUnEqualsByEquals) {
lvResult = pvObject1.hashCode() - pvObject2.hashCode();
}
return lvResult;
}
}
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