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Java Source Code / Java Documentation » JMX » XMOJO » javax.management 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


javax.management.Notification
   javax.management.AttributeChangeNotification

AttributeChangeNotification
public class AttributeChangeNotification extends Notification (Code)
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
final public static  java.lang.StringATTRIBUTE_CHANGE
     Notification type denoting that the observed MBean attribute value has changed.

Constructor Summary
public  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
public  StringgetAttributeName()
     Gets the name of the attribute which has changed.
public  StringgetAttributeType()
     Gets the type of the attribute which has changed.
public  ObjectgetNewValue()
     Gets the new value of the attribute which has changed.
public  ObjectgetOldValue()
     Gets the old value of the attribute which has changed.

Field Detail
ATTRIBUTE_CHANGE
final public static java.lang.String ATTRIBUTE_CHANGE(Code)
Notification type denoting that the observed MBean attribute value has changed. The value of this notification type 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)(Code)
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 MBeanthe attribute belongs to.
Parameters:
  sequenceNumber - The notification sequence number within the source object.
Parameters:
  timeStamp - The date at which the notification is being sent.
Parameters:
  msg - A String containing the message of the notification.
Parameters:
  attributeName - A String giving the name of the attribute.
Parameters:
  attributeType - A String containing the type of the attribute.
Parameters:
  oldValue - An object representing value of the attribute before the change.
Parameters:
  newValue - An object representing value of the attribute after the change.




Method Detail
getAttributeName
public String getAttributeName()(Code)
Gets the name of the attribute which has changed. A String containing the name of the attribute.



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



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



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



Fields inherited from javax.management.Notification
protected Object source(Code)(Java Doc)

Methods inherited from javax.management.Notification
public String getMessage()(Code)(Java Doc)
public long getSequenceNumber()(Code)(Java Doc)
public Object getSource()(Code)(Java Doc)
public long getTimeStamp()(Code)(Java Doc)
public String getType()(Code)(Java Doc)
public Object getUserData()(Code)(Java Doc)
public void setSequenceNumber(long sequenceNumber)(Code)(Java Doc)
public void setSource(Object source)(Code)(Java Doc)
public void setTimeStamp(long timeStamp)(Code)(Java Doc)
public void setUserData(Object userData)(Code)(Java Doc)
public String toString()(Code)(Java Doc)

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