compact3
javax.management
Class AttributeChangeNotification
- java.lang.Object
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- java.util.EventObject
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- javax.management.Notification
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- javax.management.AttributeChangeNotification
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- 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
NotificationBroadcasterinterface has to be implemented by any MBean for which an attribute change is of interest.Example: If an MBean called
myMbeanneeds to notify registered listeners when its attribute:
is modified,String myStringmyMbeancreates and emits the following notification:new AttributeChangeNotification(myMbean, sequenceNumber, timeStamp, msg, "myString", "String", oldValue, newValue);- Since:
- 1.5
- See Also:
- Serialized Form
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Field Summary
Fields Modifier and Type Field and Description static StringATTRIBUTE_CHANGENotification type which indicates that the observed MBean attribute value has changed.-
Fields inherited from class javax.management.Notification
source
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Constructor Summary
Constructors Constructor and Description AttributeChangeNotification(Object source, long sequenceNumber, long timeStamp, String msg, String attributeName, String attributeType, Object oldValue, Object newValue)Constructs an attribute change notification object.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method and Description StringgetAttributeName()Gets the name of the attribute which has changed.StringgetAttributeType()Gets the type of the attribute which has changed.ObjectgetNewValue()Gets the new value of the attribute which has changed.ObjectgetOldValue()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
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Methods inherited from class java.util.EventObject
getSource
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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 isjmx.attribute.change.- See Also:
- Constant Field Values
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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:
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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.
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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.
getOldValue
public Object getOldValue()
Gets the old value of the attribute which has changed.- Returns:
- An Object containing the old value 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.
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For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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