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  import java.io.Serializable;
23  
24  /**
25   * <a href="Tuple.java.html"><b><i>View Source</i></b></a>
26   *
27   * @author Alexander Chow
28   *
29   */
30  public class Tuple implements Serializable {
31  
32      public Tuple(Object obj0, Object obj1) {
33          _array = new Object[] {obj0, obj1};
34      }
35  
36      public Tuple(Object obj0, Object obj1, Object obj2) {
37          _array = new Object[] {obj0, obj1, obj2};
38      }
39  
40      public Tuple(Object obj0, Object obj1, Object obj2, Object obj3) {
41          _array = new Object[] {obj0, obj1, obj2, obj3};
42      }
43  
44      public Tuple(Object[] array) {
45          _array = array;
46      }
47  
48      public Object getObject(int i) {
49          return _array[i];
50      }
51  
52      public boolean equals(Object obj) {
53          if (!(obj instanceof Tuple)) {
54              return false;
55          }
56  
57          Tuple tuple = (Tuple)obj;
58  
59          if (tuple._array.length != _array.length) {
60              return false;
61          }
62  
63          for (int i = 0; i < _array.length; i++) {
64              if ((tuple._array != null) && (_array[i] != null) &&
65                  (!_array[i].equals(tuple._array[i]))) {
66  
67                  return false;
68              }
69              else if ((tuple._array[i] == null) || (_array[i] == null)) {
70                  return false;
71              }
72          }
73  
74          return true;
75      }
76  
77      public int hashCode() {
78          int hashCode = 0;
79  
80          for (int i = 0; i < _array.length; i++) {
81              hashCode = hashCode ^ _array[i].hashCode();
82          }
83  
84          return hashCode;
85      }
86  
87      private Object[] _array;
88  
89  }