Association


1   /*
2    * The contents of this file are subject to the terms 
3    * of the Common Development and Distribution License 
4    * (the "License").  You may not use this file except 
5    * in compliance with the License.
6    * 
7    * You can obtain a copy of the license at 
8    * glassfish/bootstrap/legal/CDDLv1.0.txt or 
9    * https://glassfish.dev.java.net/public/CDDLv1.0.html. 
10   * See the License for the specific language governing 
11   * permissions and limitations under the License.
12   * 
13   * When distributing Covered Code, include this CDDL 
14   * HEADER in each file and include the License file at 
15   * glassfish/bootstrap/legal/CDDLv1.0.txt.  If applicable, 
16   * add the following below this CDDL HEADER, with the 
17   * fields enclosed by brackets "[]" replaced with your 
18   * own identifying information: Portions Copyright [yyyy] 
19   * [name of copyright owner]
20   */
21  // Copyright (c) 1998, 2005, Oracle. All rights reserved.  
22  package oracle.toplink.essentials.mappings;
23  
24  import java.util.*;
25  
26  /**
27   * <p><b>Purpose</b>: Generic association object.
28   * This can be used to map hashtable/map containers where the key and value primitives or independent objects.
29   *
30   * @author James Sutherland
31   * @since TOPLink/Java 3.0
32   */
33  public class Association implements Map.Entry {
34      protected Object   key;
35      protected Object   value;
36  
37      /**
38       * Default constructor.
39       */
40      public Association() {
41          super();
42      }
43  
44      /**
45       * PUBLIC:
46       * Create an association.
47       */
48      public Association(Object   key, Object   value) {
49          this.key = key;
50          this.value = value;
51      }
52  
53      /**
54       * PUBLIC:
55       * Return the key.
56       */
57      public Object   getKey() {
58          return key;
59      }
60  
61      /**
62       * PUBLIC:
63       * Return the value.
64       */
65      public Object   getValue() {
66          return value;
67      }
68  
69      /**
70       * PUBLIC:
71       * Set the key.
72       */
73      public void setKey(Object   key) {
74          this.key = key;
75      }
76  
77      /**
78       * PUBLIC:
79       * Set the value.
80       */
81      public Object   setValue(Object   value) {
82          Object   oldValue = this.value;
83          this.value = value;
84          return oldValue;
85      }
86  }
87
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