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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.operation;
import org.databene.commons.ComparableComparator;
import org.databene.commons.Operation;
import java.util.Comparator;
/**
* Returns the minimum of two values. If a Comparaotr is provided, that one is used,
* else it is assumed that E implements Comparable.
*
* Created: 03.08.2007 07:40:14
* @author Volker Bergmann
*/
public class MinOperation implements Operation {
private Comparator comparator;
@SuppressWarnings({ "unchecked", "rawtypes" })
public MinOperation() {
this(new ComparableComparator());
}
public MinOperation(Comparator comparator) {
this.comparator = comparator;
}
@Override
public E perform(E... args) {
if (args.length == 0)
return null;
E result = args[0];
for (int i = 1; i < args.length; i++)
if (comparator.compare(result, args[i]) > 0)
result = args[i];
return result;
}
}