/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 2008 jOpenDocument, by ILM Informatique. All rights reserved.
*
* The contents of this file are subject to the terms of the GNU
* General Public License Version 3 only ("GPL").
* You may not use this file except in compliance with the License.
* You can obtain a copy of the License at http://www.gnu.org/licenses/gpl-3.0.html
* See the License for the specific language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each file.
*
*/
package org.jopendocument.util;
import java.util.Arrays;
import java.util.List;
/**
* A simple class to hold 2 values in a type-safe manner.
*
* @author Sylvain
*
* @param <A> type of first value.
* @param <B> type of second value.
*/
public class Tuple2<A, B> {
// just to make the code shorter
public static final <A, B> Tuple2<A, B> create(A a, B b) {
return new Tuple2<A, B>(a, b);
}
private final A a;
private final B b;
public Tuple2(A a, B b) {
super();
this.a = a;
this.b = b;
}
public final A get0() {
return this.a;
}
public final B get1() {
return this.b;
}
public List<Object> asList() {
return Arrays.asList(get0(), get1());
}
@Override
public boolean equals(Object obj) {
if (obj instanceof Tuple2) {
final Tuple2<?, ?> o = (Tuple2<?, ?>) obj;
return this.asList().equals(o.asList());
} else
return false;
}
@Override
public int hashCode() {
return this.asList().hashCode();
}
@Override
public String toString() {
return getClass().getSimpleName() + " " + this.asList();
}
}