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  import java.io.Serializable;
26  
27  /**
28   * <a href="Tuple.java.html"><b><i>View Source</i></b></a>
29   *
30   * @author Alexander Chow
31   *
32   */
33  public class Tuple implements Serializable {
34  
35      public Tuple(Object obj0, Object obj1) {
36          _array = new Object[] {obj0, obj1};
37      }
38  
39      public Tuple(Object obj0, Object obj1, Object obj2) {
40          _array = new Object[] {obj0, obj1, obj2};
41      }
42  
43      public Tuple(Object obj0, Object obj1, Object obj2, Object obj3) {
44          _array = new Object[] {obj0, obj1, obj2, obj3};
45      }
46  
47      public Tuple(Object[] array) {
48          _array = array;
49      }
50  
51      public Object getObject(int i) {
52          return _array[i];
53      }
54  
55      public boolean equals(Object obj) {
56          if (!(obj instanceof Tuple)) {
57              return false;
58          }
59  
60          Tuple tuple = (Tuple)obj;
61  
62          if (tuple._array.length != _array.length) {
63              return false;
64          }
65  
66          for (int i = 0; i < _array.length; i++) {
67              if ((tuple._array != null) && (_array[i] != null) &&
68                  (!_array[i].equals(tuple._array[i]))) {
69  
70                  return false;
71              }
72              else if ((tuple._array[i] == null) || (_array[i] == null)) {
73                  return false;
74              }
75          }
76  
77          return true;
78      }
79  
80      public int hashCode() {
81          int hashCode = 0;
82  
83          for (int i = 0; i < _array.length; i++) {
84              hashCode = hashCode ^ _array[i].hashCode();
85          }
86  
87          return hashCode;
88      }
89  
90      private Object[] _array;
91  
92  }