ListenerInfo


1   /*
2    * @(#)ListenerInfo.java    1.4 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 com.sun.jmx.remote.internal;
9   
10  import javax.management.NotificationFilter  ;
11  import javax.management.NotificationListener  ;
12  import javax.management.ObjectName  ;
13  
14  import javax.security.auth.Subject  ;
15  
16  
17  /**
18   * <p>An identified listener.  A listener has an Integer id that is
19   * unique per connector server.  It selects notifications based on the
20   * ObjectName of the originator and an optional
21   * NotificationFilter.</p>
22   *
23   * <p>Two ListenerInfo objects are considered equal if and only if
24   * they have the same listenerId.  This means that ListenerInfo
25   * objects can be stored in a Set or Map and retrieved using another
26   * ListenerInfo with the same listenerId but arbitrary ObjectNme and
27   * NotificationFilter values.</p>
28   */
29  public class ListenerInfo {
30      public ListenerInfo(Integer   listenerID,
31              ObjectName   name,
32              NotificationFilter   filter) {
33      this.listenerID = listenerID;
34      this.name = name;
35      this.filter = filter;
36      }
37  
38      public ListenerInfo(Integer   listenerID,
39              ObjectName   name,
40              NotificationListener   listener,
41              NotificationFilter   filter,
42              Object   handback,
43              Subject   delegationSubject) {
44      this.listenerID = listenerID;
45      this.name = name;
46      this.listener = listener;
47      this.filter = filter;
48      this.handback = handback;
49      this.delegationSubject = delegationSubject;
50      }
51  
52      public boolean equals(Object   o) {
53      if (!(o instanceof ListenerInfo)) {
54          return false;
55      }
56  
57      return listenerID.equals(((ListenerInfo)o).listenerID);
58      }
59  
60      public int hashCode() {
61      return listenerID.intValue();
62      }
63  
64      public ObjectName   getObjectName() {
65      return name;
66      }
67  
68      public Integer   getListenerID() {
69      return listenerID;
70      }
71  
72      public NotificationFilter   getNotificationFilter() {
73      return filter;
74      }
75  
76      public NotificationListener   getListener() {
77      return listener;
78      }
79  
80      public Object   getHandback() {
81      return handback;
82      }
83  
84      public Subject   getDelegationSubject() {
85      return delegationSubject;
86      }
87  
88      private ObjectName   name;
89      private Integer   listenerID;
90      private NotificationFilter   filter;
91  
92      private NotificationListener   listener = null;
93      private Object   handback = null;
94      private Subject   delegationSubject = null;
95  }
96
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