org.apache.commons.lang3.tuple.MutableTriple Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of commons-lang3 Show documentation

Apache Commons Lang, a package of Java utility classes for the classes that are in java.lang's hierarchy, or are considered to be so standard as to justify existence in java.lang. for jdk 1.5

There is a newer version: 3.4

Show newest version

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.commons.lang3.tuple;

/**
 * A mutable triple consisting of three {@code Object} elements.
 *
 * Not #ThreadSafe#
 *
 * @param  the left element type
 * @param  the middle element type
 * @param  the right element type
 *
 * @version $Id: MutableTriple.java 1552635 2013-12-20 13:02:03Z britter $
 * @since 3.2
 */
public class MutableTriple extends Triple {

    /** Serialization version */
    private static final long serialVersionUID = 1L;

    /** Left object */
    public L left;
    /** Middle object */
    public M middle;
    /** Right object */
    public R right;

    /**
     * Obtains an mutable triple of three objects inferring the generic types.
     *
     * This factory allows the triple to be created using inference to
     * obtain the generic types.
     *
     * @param  the left element type
     * @param  the middle element type
     * @param  the right element type
     * @param left  the left element, may be null
     * @param middle  the middle element, may be null
     * @param right  the right element, may be null
     * @return a triple formed from the three parameters, not null
     */
    public static  MutableTriple of(final L left, final M middle, final R right) {
        return new MutableTriple(left, middle, right);
    }

    /**
     * Create a new triple instance of three nulls.
     */
    public MutableTriple() {
        super();
    }

    /**
     * Create a new triple instance.
     *
     * @param left  the left value, may be null
     * @param middle  the middle value, may be null
     * @param right  the right value, may be null
     */
    public MutableTriple(final L left, final M middle, final R right) {
        super();
        this.left = left;
        this.middle = middle;
        this.right = right;
    }

    //-----------------------------------------------------------------------
    /**
     * {@inheritDoc}
     */
    @Override
    public L getLeft() {
        return left;
    }

    /**
     * Sets the left element of the triple.
     *
     * @param left  the new value of the left element, may be null
     */
    public void setLeft(final L left) {
        this.left = left;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public M getMiddle() {
        return middle;
    }

    /**
     * Sets the middle element of the triple.
     *
     * @param middle  the new value of the middle element, may be null
     */
    public void setMiddle(final M middle) {
        this.middle = middle;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public R getRight() {
        return right;
    }

    /**
     * Sets the right element of the triple.
     *
     * @param right  the new value of the right element, may be null
     */
    public void setRight(final R right) {
        this.right = right;
    }
}