javax.management
public class: AttributeChangeNotificationFilter [javadoc |
source]
java.lang.Object
javax.management.AttributeChangeNotificationFilter
All Implemented Interfaces:
NotificationFilter
This class implements of the
NotificationFilter
interface for the
attribute change notification .
The filtering is performed on the name of the observed attribute.
It manages a list of enabled attribute names.
A method allows users to enable/disable as many attribute names as required.
| Methods from java.lang.Object: |
|---|
|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Method from javax.management.AttributeChangeNotificationFilter Detail: |
public synchronized void disableAllAttributes() {
enabledAttributes.removeAllElements();
}
Disables all the attribute names. |
public synchronized void disableAttribute(String name) {
enabledAttributes.removeElement(name);
}
Disables all the attribute change notifications the attribute name of which equals
the specified attribute name to be sent to the listener.
If the specified name is not in the list of enabled attribute names,
this method has no effect. |
public synchronized void enableAttribute(String name) throws IllegalArgumentException {
if (name == null) {
throw new java.lang.IllegalArgumentException("The name cannot be null.");
}
if (!enabledAttributes.contains(name)) {
enabledAttributes.addElement(name);
}
}
Enables all the attribute change notifications the attribute name of which equals
the specified name to be sent to the listener.
If the specified name is already in the list of enabled attribute names,
this method has no effect. |
public synchronized Vector getEnabledAttributes() {
return enabledAttributes;
}
Gets all the enabled attribute names for this filter. |
public synchronized boolean isNotificationEnabled(Notification notification) {
String type = notification.getType();
if ((type == null) ||
(type.equals(AttributeChangeNotification.ATTRIBUTE_CHANGE) == false) ||
(!(notification instanceof AttributeChangeNotification))) {
return false;
}
String attributeName =
((AttributeChangeNotification)notification).getAttributeName();
return enabledAttributes.contains(attributeName);
}
Invoked before sending the specified notification to the listener.
This filter compares the attribute name of the specified attribute change notification
with each enabled attribute name.
If the attribute name equals one of the enabled attribute names,
the notification must be sent to the listener and this method returns true. |