| /** |
| * Copyright (C) 2015 DataTorrent, Inc. |
| * |
| * 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 com.datatorrent.common.util; |
| |
| import java.io.Serializable; |
| |
| /** |
| * <p>Pair class.</p> |
| * |
| * @since 0.3.2 |
| */ |
| public class Pair<F, S> implements Serializable |
| { |
| private static final long serialVersionUID = 731157267102567944L; |
| public final F first; |
| public final S second; |
| |
| @Override |
| public int hashCode() |
| { |
| int hash = 7; |
| hash = 41 * hash + (this.first != null ? this.first.hashCode() : 0); |
| hash = 41 * hash + (this.second != null ? this.second.hashCode() : 0); |
| return hash; |
| } |
| |
| @Override |
| public boolean equals(Object obj) |
| { |
| if (obj == null) { |
| return false; |
| } |
| if (getClass() != obj.getClass()) { |
| return false; |
| } |
| @SuppressWarnings("unchecked") |
| final Pair<F, S> other = (Pair<F, S>)obj; |
| if (this.first != other.first && (this.first == null || !this.first.equals(other.first))) { |
| return false; |
| } |
| if (this.second != other.second && (this.second == null || !this.second.equals(other.second))) { |
| return false; |
| } |
| return true; |
| } |
| |
| public Pair(F first, S second) |
| { |
| this.first = first; |
| this.second = second; |
| } |
| |
| public F getFirst() |
| { |
| return first; |
| } |
| |
| public S getSecond() |
| { |
| return second; |
| } |
| |
| @Override |
| public String toString() |
| { |
| return "[" + first + "," + second + "]"; |
| } |
| |
| } |