1 /*
2 * Licensed to The Apereo Foundation under one or more contributor license
3 * agreements. See the NOTICE file distributed with this work for additional
4 * information regarding copyright ownership.
5 *
6 *
7 * The Apereo Foundation licenses this file to you under the Educational
8 * Community License, Version 2.0 (the "License"); you may not use this file
9 * except in compliance with the License. You may obtain a copy of the License
10 * at:
11 *
12 * http://opensource.org/licenses/ecl2.txt
13 *
14 * Unless required by applicable law or agreed to in writing, software
15 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
16 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
17 * License for the specific language governing permissions and limitations under
18 * the License.
19 *
20 */
21
22
23 package org.opencastproject.util.data;
24
25 import static org.opencastproject.util.EqualsUtil.eqClasses;
26
27 import java.util.Objects;
28
29 /** A pair. */
30 public final class Tuple<A, B> {
31
32 private final A a;
33 private final B b;
34
35 public Tuple(A a, B b) {
36 this.a = a;
37 this.b = b;
38 }
39
40 /** Get the first element. */
41 public A getA() {
42 return a;
43 }
44
45 /** Get the second element. */
46 public B getB() {
47 return b;
48 }
49
50 @Override
51 public boolean equals(Object that) {
52 if (this == that)
53 return true;
54 if (!eqClasses(this, that))
55 return false;
56 Tuple thatc = (Tuple) that;
57 return a.equals(thatc.a) && b.equals(thatc.b);
58 }
59
60 @Override
61 public int hashCode() {
62 return Objects.hash(a, b);
63 }
64
65 /** Create a new tuple with two elements <code>a</code> and <code>b</code>. */
66 public static <A, B> Tuple<A, B> tuple(A a, B b) {
67 return new Tuple<A, B>(a, b);
68 }
69
70 @Override
71 public String toString() {
72 return "(" + a + "," + b + ")";
73 }
74 }