1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.kernel.util;
24  
25  /**
26   * <a href="Tuple.java.html"><b><i>View Source</i></b></a>
27   *
28   * @author Alexander Chow
29   *
30   */
31  public class Tuple {
32  
33      public Tuple(Object obj0, Object obj1) {
34          _array = new Object[] {obj0, obj1};
35      }
36  
37      public Tuple(Object obj0, Object obj1, Object obj2) {
38          _array = new Object[] {obj0, obj1, obj2};
39      }
40  
41      public Tuple(Object obj0, Object obj1, Object obj2, Object obj3) {
42          _array = new Object[] {obj0, obj1, obj2, obj3};
43      }
44  
45      public Tuple(Object[] array) {
46          _array = array;
47      }
48  
49      public Object getObject(int i) {
50          return _array[i];
51      }
52  
53      public boolean equals(Object obj) {
54          if (!(obj instanceof Tuple)) {
55              return false;
56          }
57  
58          Tuple tuple = (Tuple)obj;
59  
60          if (tuple._array.length != _array.length) {
61              return false;
62          }
63  
64          for (int i = 0; i < _array.length; i++) {
65              if ((tuple._array != null) && (_array[i] != null) &&
66                  (!_array[i].equals(tuple._array[i]))) {
67  
68                  return false;
69              }
70              else if ((tuple._array[i] == null) || (_array[i] == null)) {
71                  return false;
72              }
73          }
74  
75          return true;
76      }
77  
78      public int hashCode() {
79          int hashCode = 0;
80  
81          for (int i = 0; i < _array.length; i++) {
82              hashCode = hashCode ^ _array[i].hashCode();
83          }
84  
85          return hashCode;
86      }
87  
88      private Object[] _array;
89  
90  }