1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    * The contents of this file are subject to the terms of the Liferay Enterprise
5    * Subscription License ("License"). You may not use this file except in
6    * compliance with the License. You can obtain a copy of the License by
7    * contacting Liferay, Inc. See the License for the specific language governing
8    * permissions and limitations under the License, including but not limited to
9    * distribution rights of the Software.
10   *
11   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
12   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
14   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
15   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
16   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
17   * SOFTWARE.
18   */
19  
20  package com.liferay.portal.kernel.util;
21  
22  /**
23   * <a href="Tuple.java.html"><b><i>View Source</i></b></a>
24   *
25   * @author Alexander Chow
26   *
27   */
28  public class Tuple {
29  
30      public Tuple(Object obj0, Object obj1) {
31          _array = new Object[] {obj0, obj1};
32      }
33  
34      public Tuple(Object obj0, Object obj1, Object obj2) {
35          _array = new Object[] {obj0, obj1, obj2};
36      }
37  
38      public Tuple(Object obj0, Object obj1, Object obj2, Object obj3) {
39          _array = new Object[] {obj0, obj1, obj2, obj3};
40      }
41  
42      public Tuple(Object[] array) {
43          _array = array;
44      }
45  
46      public Object getObject(int i) {
47          return _array[i];
48      }
49  
50      public boolean equals(Object obj) {
51          if (!(obj instanceof Tuple)) {
52              return false;
53          }
54  
55          Tuple tuple = (Tuple)obj;
56  
57          if (tuple._array.length != _array.length) {
58              return false;
59          }
60  
61          for (int i = 0; i < _array.length; i++) {
62              if ((tuple._array != null) && (_array[i] != null) &&
63                  (!_array[i].equals(tuple._array[i]))) {
64  
65                  return false;
66              }
67              else if ((tuple._array[i] == null) || (_array[i] == null)) {
68                  return false;
69              }
70          }
71  
72          return true;
73      }
74  
75      public int hashCode() {
76          int hashCode = 0;
77  
78          for (int i = 0; i < _array.length; i++) {
79              hashCode = hashCode ^ _array[i].hashCode();
80          }
81  
82          return hashCode;
83      }
84  
85      private Object[] _array;
86  
87  }