Package 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: 23993703e89d0167dc90e6e564cc37956b99f9be $

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static final AlwaysMatchingEventFilter	INSTANCE	Unique instance of AlwaysMatchingEventFilter.

Constructor Summary

Constructors

Constructor	Description
AlwaysMatchingEventFilter()	Deprecated. since 6.0M1, use INSTANCE instead

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object obj)
String	getFilter()	Provides access to the filter's criterion.
int	hashCode()
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, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Field Details

INSTANCE

public static final AlwaysMatchingEventFilter INSTANCE

Unique instance of AlwaysMatchingEventFilter.

Since:

6.0M1

Constructor Details

AlwaysMatchingEventFilter

@Deprecated
public AlwaysMatchingEventFilter()

Deprecated.

since 6.0M1, use INSTANCE instead

Method Details

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.

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object