This documentation differs from the official API. Jadeite adds extra features to the API including: variable font sizes, constructions examples, placeholders for classes and methods, and auto-generated “See Also” links. Additionally it is missing some items found in standard Javadoc documentation, including: generics type information, “Deprecated” tags and comments, “See Also” links, along with other minor differences. Please send any questions or feedback to bam@cs.cmu.edu.


javax.management
class AttributeChangeNotification

java.lang.Object extended by java.util.EventObject extended by javax.management.Notification extended by javax.management.AttributeChangeNotification
All Implemented Interfaces:
Serializable

public class AttributeChangeNotification
extends Notification

Provides definitions of the attribute change notifications sent by MBeans.

It's up to the MBean owning the attribute of interest to create and send attribute change notifications when the attribute change occurs. So the NotificationBroadcaster interface has to be implemented by any MBean for which an attribute change is of interest.

Example: If an MBean called myMbean needs to notify registered listeners when its attribute:

String myString
is modified, myMbean creates and emits the following notification:
new AttributeChangeNotification(myMbean, sequenceNumber, timeStamp, msg, "myString", "String", oldValue, newValue);


Field Summary
static String ATTRIBUTE_CHANGE
          Notification type which indicates that the observed MBean attribute value has changed.
 
Fields inherited from class javax.management.Notification
source
 
Fields inherited from class java.util.EventObject
source
 
Constructor Summary
AttributeChangeNotification(Object source, long sequenceNumber, long timeStamp, String msg, String attributeName, String attributeType, Object oldValue, Object newValue)

          Constructs an attribute change notification object.
 
Method Summary
 String

          Gets the name of the attribute which has changed.
 String

          Gets the type of the attribute which has changed.
 Object

          Gets the new value of the attribute which has changed.
 Object

          Gets the old value of the attribute which has changed.
 
Methods inherited from class javax.management.Notification
getMessage, getSequenceNumber, getTimeStamp, getType, getUserData, setSequenceNumber, setSource, setTimeStamp, setUserData, toString
 
Methods inherited from class java.util.EventObject
getSource, toString
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

ATTRIBUTE_CHANGE

public static final String ATTRIBUTE_CHANGE
Notification type which indicates that the observed MBean attribute value has changed.
The value of this type string is jmx.attribute.change.
Constructor Detail

AttributeChangeNotification

public AttributeChangeNotification(Object source,
                                   long sequenceNumber,
                                   long timeStamp,
                                   String msg,
                                   String attributeName,
                                   String attributeType,
                                   Object oldValue,
                                   Object newValue)
Constructs an attribute change notification object. In addition to the information common to all notification, the caller must supply the name and type of the attribute, as well as its old and new values.

Parameters:
source - The notification producer, that is, the MBean the attribute belongs to.
sequenceNumber - The notification sequence number within the source object.
timeStamp - The date at which the notification is being sent.
msg - A String containing the message of the notification.
attributeName - A String giving the name of the attribute.
attributeType - A String containing the type of the attribute.
oldValue - An object representing value of the attribute before the change.
newValue - An object representing value of the attribute after the change.
Method Detail

getAttributeName

public String getAttributeName()
Gets the name of the attribute which has changed.

Returns:
A String containing the name of the attribute.

getAttributeType

public String getAttributeType()
Gets the type of the attribute which has changed.

Returns:
A String containing the type of the attribute.

getNewValue

public Object getNewValue()
Gets the new value of the attribute which has changed.

Returns:
An Object containing the new value of the attribute.

getOldValue

public Object getOldValue()
Gets the old value of the attribute which has changed.

Returns:
An Object containing the old value of the attribute.


This documentation differs from the official API. Jadeite adds extra features to the API including: variable font sizes, constructions examples, placeholders for classes and methods, and auto-generated “See Also” links. Additionally it is missing some items found in standard Javadoc documentation, including: generics type information, “Deprecated” tags and comments, “See Also” links, along with other minor differences. Please send any questions or feedback to bam@cs.cmu.edu.
This page displays the Jadeite version of the documention, which is derived from the offical documentation that contains this copyright notice:
Copyright 2008 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.
The official Sun™ documentation can be found here at http://java.sun.com/javase/6/docs/api/.