org.apache.tomcat.util.modeler
Class FixedNotificationFilter
public
class
FixedNotificationFilter
extends Object
implements NotificationFilter
Special NotificationFilter that allows modeler to optimize its notifications.
This class is immutable - after you construct it it'll filter based on
a fixed set of notification names.
The JMX specification requires the filters to be called before the
notifications are sent. We can call this filter well in advance, when
the listener is added. Based on the result we can maintain separate
channels for each notification - and reduce the overhead.
Author: Costin Manolache
public FixedNotificationFilter(String[] names)
Construct a new filter that accepts only the specified notification
names.
Parameters: names Names of the notification types
public String[] getNames()
Return the set of names that are accepted by this filter. If this
filter accepts all attribute names, a zero length array will be
returned.
public boolean isNotificationEnabled(Notification notification)
Test whether notification enabled for this event.
Return true if:
- Either the set of accepted names is empty (implying that all
attribute names are of interest) or the set of accepted names
includes the name of the attribute in this notification
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