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14.3. Modifying Cache Entries
After the cache entry has been created, the cache entry can be modified programmatically.
14.3.1. Cache Entry Modified Listener Configuration
In a cache entry modified listener event, The
getValue() method's behavior is specific to whether the callback is triggered before or after the actual operation has been performed. For example, if event.isPre() is true, then event.getValue() would return the old value, prior to modification. If event.isPre() is false, then event.getValue() would return new value. If the event is creating and inserting a new entry, the old value would be null. For more information about isPre(), see the Red Hat JBoss Data Grid API Documentation's listing for the org.infinispan.notifications.cachelistener.event package.
Listeners can only be configured programmatically by using the methods exposed by the Listenable and FilteringListenable interfaces (which the Cache object implements).
