org.apache.tomcat.util.modeler: public class: FixedNotificationFilter

org.apache.tomcat.util.modeler
public class: FixedNotificationFilter [javadoc | source]

java.lang.Object
   org.apache.tomcat.util.modeler.FixedNotificationFilter

All Implemented Interfaces:
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

Field Summary
String[]	namesA

Constructor:

Constructor:
public FixedNotificationFilter(String[] names) { super(); } Construct a new filter that accepts only the specified notification names. Parameters: `names` - Names of the notification types

 public FixedNotificationFilter(String[] names) {
        super();
}

Construct a new filter that accepts only the specified notification names.

Parameters:

names - Names of the notification types

Method from org.apache.tomcat.util.modeler.FixedNotificationFilter Summary:
getNames, isNotificationEnabled

Methods from java.lang.Object:
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method from org.apache.tomcat.util.modeler.FixedNotificationFilter Detail:
public String[] getNames() { synchronized (names) { return ((String[]) names.toArray(new String[names.size()])); } } 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) { if (notification == null) return (false); synchronized (names) { if (names.size() < 1) return (true); else return (names.contains(notification.getType())); } } 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

Method from org.apache.tomcat.util.modeler.FixedNotificationFilter Detail:

 public String[] getNames() {
        synchronized (names) {
            return ((String[]) names.toArray(new String[names.size()]));
        }
}

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) {
        if (notification == null)
            return (false);
        synchronized (names) {
            if (names.size() <  1)
                return (true);
            else
                return (names.contains(notification.getType()));
        }
}

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