/*

 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package jdk.test.lib;

import java.util.Objects;

/**

 * Triple - a three element tuple

 *

 * @param <F> first element type

 * @param <S> second element type

 * @param <T> third element type

 */

public class Triple<F, S, T> {

    private final Pair<F, Pair<S, T>> container;

    /**

     * Constructor

     *

     * @param first  first element of the triple

     * @param second second element of the triple

     * @param third  third element of the triple

     */

    public Triple(F first, S second, T third) {

        container = new Pair<>(first, new Pair<>(second, third));

    }

    /**

     * Gets first element of the triple

     */

    public F getFirst() {

        return container.first;

    }

    /**

     * Gets second element of the triple

     */

    public S getSecond() {

        return container.second.first;

    }

    /**

     * Gets third element of the triple

     */

    public T getThird() {

        return container.second.second;

    }

    @Override

    public int hashCode() {

        return container.hashCode();

    }

    @Override

    public boolean equals(Object obj) {

        if (obj instanceof Triple<?, ?, ?>) {

            Triple<?, ?, ?> objTriple = (Triple<?, ?, ?>) obj;

            return Objects.equals(container.first, objTriple.container.first)

                    && Objects.equals(container.second,

                    objTriple.container.second);

        }

        return false;

    }

    @Override

    public String toString() {

        return "(" + getFirst() + " : " + getSecond() + " : " + getThird() + ")";

    }

}