| /** |
| * 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.oozie.util; |
| |
| import org.apache.commons.lang3.ObjectUtils; |
| |
| /** |
| * Utility class for holding a pair of data |
| * @param <T> type of first data |
| * @param <S> type of second data |
| */ |
| public class Pair<T, S> { |
| private T first; |
| private S second; |
| |
| public Pair(T first, S second) { |
| this.first = first; |
| this.second = second; |
| } |
| |
| |
| public static <T, S> Pair<T, S> of(T first, S second) { |
| return new Pair<T,S>(first, second); |
| } |
| |
| public T getFirst() { |
| return first; |
| } |
| |
| public S getSecond() { |
| return second; |
| } |
| |
| public int hashCode() |
| { |
| return (first == null ? 1 : first.hashCode()) * 17 + (second == null ? 1 : second.hashCode()) * 19; |
| } |
| |
| public boolean equals(Object other) |
| { |
| if (other == null) { |
| return false; |
| } |
| |
| if (!(other instanceof Pair)) { |
| return false; |
| } |
| |
| Pair<T, S> otherPair = (Pair<T,S>)other; |
| return (ObjectUtils.equals(first, otherPair.first) && ObjectUtils.equals(second, otherPair.second)); |
| } |
| } |
| |