org.infinispan.notifications.cachelistener.filter

Interface CacheEventFilter<K,V>

All Known Subinterfaces:

CacheEventFilterConverter<K,V,C>, IndexedFilter<K,V,C>

All Known Implementing Classes:

AbstractCacheEventFilterConverter, CompositeCacheEventFilter, KeyValueFilterAsCacheEventFilter, KeyValueFilterConverterAsCacheEventFilterConverter, PostCacheEventFilter, ScopeFilter

public interface CacheEventFilter<K,V>

A filter that can be used to tell if an event should be raised or not. This filter allows for filtering based on the previous value as well as the new updated value. The old value and old metadata are the previous values and the new value and new metadata are the new values even for pre and post events.

Since:

7.0

Author:

wburns

Method Summary

Modifier and Type	Method and Description
boolean	accept(K key, V oldValue, Metadata oldMetadata, V newValue, Metadata newMetadata, EventType eventType) Whether or not this event should be raised to the listener it is attached to.
default MediaType	format()

Method Detail

accept

boolean accept(K key,
               V oldValue,
               Metadata oldMetadata,
               V newValue,
               Metadata newMetadata,
               EventType eventType)

Whether or not this event should be raised to the listener it is attached to.

Parameters:

key - The key for the entry that was changed for the event

oldValue - The previous value before the event takes place

oldMetadata - The old value before the event takes place

newValue - The new value for the entry after the event takes place

newMetadata - The new metadata for the entry after the event takes place

eventType - The type of event that is being raised

Returns:

Whether or not to notify the listener

format

default MediaType format()

Returns:

The desired data format to be used in the accept operation. If null, the filter will receive data as it's stored.