com.mysema.query.util.NullSafeComparableComparator Maven / Gradle / Ivy
/*
* Copyright 2011, Mysema Ltd
*
* 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.mysema.query.util;
import java.io.Serializable;
import java.util.Comparator;
/**
* NullSafeComparableComparator is a null safe comparator for Comparable objects
*
* @author tiwe
*
* @param
*/
public class NullSafeComparableComparator> implements Comparator, Serializable{
private static final long serialVersionUID = 5681808684776488757L;
@Override
public int compare(T obj1, T obj2) {
if (obj1 == null) {
return obj2 == null ? 0 : -1;
} else if (obj2 == null) {
return 1;
} else {
return obj1.compareTo(obj2);
}
}
}