Attribute


1   /*
2    * @(#)Attribute.java   4.22 03/12/19
3    * 
4    * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
5    * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
6    */
7   
8   package javax.management;
9   
10  
11  // java import
12  import java.io.Serializable  ;
13  
14  
15  /**
16   * Represents an MBean attribute by associating its name with its value.
17   * The MBean server and other objects use this class to get and set attributes values.
18   *
19   * @since 1.5
20   */
21  public class Attribute implements Serializable     { 
22  
23      /* Serial version */
24      private static final long serialVersionUID = 2484220110589082382L;
25      
26      /**
27       * @serial Attribute name.
28       */
29      private String   name;
30      
31      /**
32       * @serial Attribute value
33       */
34      private Object   value= null;
35  
36  
37      /**
38       * Constructs an Attribute object which associates the given attribute name with the given value.
39       *
40       * @param name A String containing the name of the attribute to be created. Cannot be null.
41       * @param value The Object which is assigned to the attribute. This object must be of the same type as the attribute.
42       *
43       */   
44      public Attribute(String   name, Object   value) { 
45  
46      if (name == null) {
47          throw new RuntimeOperationsException  (new IllegalArgumentException  ("Attribute name cannot be null "));
48      }
49  
50      this.name = name;
51      this.value = value;
52      } 
53  
54  
55      /**
56       * Returns a String containing the  name of the attribute.
57       *
58       * @return the name of the attribute.
59       */
60      public String   getName()  { 
61      return name;
62      } 
63      
64      /**
65       * Returns an Object that is the value of this attribute.
66       *
67       * @return the value of the attribute.
68       */
69      public Object   getValue()  { 
70      return value;
71      } 
72      
73      /**
74       * Compares the current Attribute Object with another Attribute Object.
75       *
76       * @param object  The Attribute that the current Attribute is to be compared with.
77       *
78       * @return  True if the two Attribute objects are equal, otherwise false.
79       */
80      
81      
82      public boolean equals(Object   object)  { 
83      if (!(object instanceof Attribute  )) {
84          return false;
85      }    
86      Attribute   val = (Attribute  ) object;
87  
88      if (value == null) {
89          if (val.getValue() == null) {
90          return name.equals(val.getName());
91          } else {
92          return false;
93          }
94      }
95  
96      return ((name.equals(val.getName())) && 
97          (value.equals(val.getValue())));
98      } 
99     
100  }
101
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