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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.bean;
import java.util.Arrays;
import org.databene.commons.ArrayFormat;
/**
* Wrapper for an array which implements {@link #equals(Object)}, {@link #hashCode()} and {@link #toString()}
* based on the array's element values.
* Created: 03.02.2012 16:34:14
* @since 0.5.4
* @author Volker Bergmann
*/
public class ArrayWithIdentity {
private Object[] elements;
public ArrayWithIdentity(Object[] elements) {
this.elements = elements;
}
public int getElementCount() {
return elements.length;
}
// java.lang.Object overrides --------------------------------------------------------------------------------------
@Override
public int hashCode() {
return Arrays.hashCode(elements);
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null || getClass() != obj.getClass())
return false;
ArrayWithIdentity that = (ArrayWithIdentity) obj;
return Arrays.equals(this.elements, that.elements);
}
@Override
public String toString() {
return ArrayFormat.format(elements);
}
}