01 /*
02 * Copyright 1999-2003 Sun Microsystems, Inc. All Rights Reserved.
03 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
04 *
05 * This code is free software; you can redistribute it and/or modify it
06 * under the terms of the GNU General Public License version 2 only, as
07 * published by the Free Software Foundation. Sun designates this
08 * particular file as subject to the "Classpath" exception as provided
09 * by Sun in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22 * CA 95054 USA or visit www.sun.com if you need additional information or
23 * have any questions.
24 */
25
26 package javax.management;
27
28 /**
29 * Represents a notification emitted by the MBean server through the MBeanServerDelegate MBean.
30 * The MBean Server emits the following types of notifications: MBean registration, MBean
31 * de-registration.
32 * <P>
33 * To receive to MBeanServerNotifications, you need to be declared as listener to
34 * the {@link javax.management.MBeanServerDelegate javax.management.MBeanServerDelegate} MBean
35 * that represents the MBeanServer. The ObjectName of the MBeanServerDelegate is:
36 * <CODE>JMImplementation:type=MBeanServerDelegate</CODE>.
37 *
38 * @since 1.5
39 */
40 public class MBeanServerNotification extends Notification {
41
42 /* Serial version */
43 private static final long serialVersionUID = 2876477500475969677L;
44
45 /**
46 * Notification type denoting that an MBean has been registered. Value is "JMX.mbean.registered".
47 */
48 public static final String REGISTRATION_NOTIFICATION = "JMX.mbean.registered";
49
50 /**
51 * Notification type denoting that an MBean has been unregistered. Value is "JMX.mbean.unregistered".
52 */
53 public static final String UNREGISTRATION_NOTIFICATION = "JMX.mbean.unregistered";
54
55 /**
56 * @serial The object names of the MBeans concerned by this notification
57 */
58 private final ObjectName objectName;
59
60 /**
61 * Creates an MBeanServerNotification object specifying object names of
62 * the MBeans that caused the notification and the specified notification type.
63 *
64 * @param type A string denoting the type of the
65 * notification. Set it to one these values: {@link
66 * #REGISTRATION_NOTIFICATION}, {@link
67 * #UNREGISTRATION_NOTIFICATION}.
68 * @param source The MBeanServerNotification object responsible
69 * for forwarding MBean server notification.
70 * @param sequenceNumber A sequence number that can be used to order
71 * received notifications.
72 * @param objectName The object name of the MBean that caused the notification.
73 *
74 */
75 public MBeanServerNotification(String type, Object source,
76 long sequenceNumber, ObjectName objectName) {
77 super (type, source, sequenceNumber);
78 this .objectName = objectName;
79 }
80
81 /**
82 * Returns the object name of the MBean that caused the notification.
83 *
84 * @return the object name of the MBean that caused the notification.
85 */
86 public ObjectName getMBeanName() {
87 return objectName;
88 }
89
90 }
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