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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) 2004-2015 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.Converter;
/**
* Wraps a data object with a helper object that can be compared independently of the data object.
* Created: 26.02.2010 09:17:05
* @param the type to wrap
* @since 0.5.0
* @author Volker Bergmann
*/
@SuppressWarnings({ "unchecked", "rawtypes" })
public class ComparableWrapper implements Comparable {
public final Comparable comparable;
public final E realObject;
public ComparableWrapper(Comparable comparable, E realObject) {
this.comparable = comparable;
this.realObject = realObject;
}
@Override
public int compareTo(ComparableWrapper that) {
return this.comparable.compareTo(that.comparable);
}
public static ComparableWrapper[] wrapAll(T[] realObjects, Converter comparableBuilder) {
ComparableWrapper[] result = new ComparableWrapper[realObjects.length];
for (int i = 0; i < realObjects.length; i++) {
T realObject = realObjects[i];
Comparable comparable = (Comparable) comparableBuilder.convert(realObject);
result[i] = new ComparableWrapper(comparable, realObject);
}
return result;
}
}