org.xwiki.observation.event.filter
Class AlwaysMatchingEventFilter

java.lang.Object
  org.xwiki.observation.event.filter.AlwaysMatchingEventFilter

All Implemented Interfaces:

Serializable, EventFilter

public class AlwaysMatchingEventFilter
extends Object
implements EventFilter, Serializable

An EventFilter that always matches another event filter.

Version:

$Id: 5616b027697c4a8e3735baa367c73a366bdafc07 $

See Also:

Serialized Form

Constructor Summary

AlwaysMatchingEventFilter()

Method Summary

String	getFilter() Provides access to the filter's criterion.
boolean	matches(EventFilter eventFilter) Compares two event filters to see if they match, meaning that the "contexts" of two events are compatible.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AlwaysMatchingEventFilter

public AlwaysMatchingEventFilter()

Method Detail

getFilter

public String getFilter()

Description copied from interface: EventFilter

Provides access to the filter's criterion.

Specified by:

getFilter in interface EventFilter

Returns:

the filter used in the EventFilter.matches(EventFilter) method to verify if a passed event filter matches it.

See Also:

EventFilter.matches(EventFilter)

matches

public boolean matches(EventFilter eventFilter)

Description copied from interface: EventFilter

Compares two event filters to see if they match, meaning that the "contexts" of two events are compatible. For example, a FixedNameEventFilter matches another filter only if they both have the same name set as the filter, while an AlwaysMatchingEventFilter matches any other event filter. A listener that registered to receive notifications like referenceEvent and with referenceEventFilter, will be notified of any occuring event for which referenceEvent.matches(occuringEvent) will return true and referenceEvent.getEventFilter().matches(occurringEvent.getEventFilter()).

Specified by:

matches in interface EventFilter

Parameters:

eventFilter - the event filter to compare to the filter value

Returns:

true if both event filters match. The matching algorithm is left to the filter event implementation. For example the Regex event filter will match another filter if that other filter matches the regex.