package org.infinispan.notifications.cachelistener.annotation;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
/**
* This annotation should be used on methods that need to be notified when a cache entry is expired
* <p/>
* Methods annotated with this annotation should be public and take in a single parameter, a {@link
* org.infinispan.notifications.cachelistener.event.CacheEntryExpiredEvent} otherwise an {@link
* org.infinispan.notifications.IncorrectListenerException} will be thrown when registering your cache listener.
* <p/>
* Locking: there is no guarantee as to whether the lock is acquired for this key, however there is internal
* guarantees to make sure these events are not out of order
* <p/>
* It is possible yet highly unlikely to receive this event right after a remove event even though the value
* was previously removed. This can happen in the case when an expired entry in a store (not present in memory) is
* found by the reaper thread and a remove occurs at the same time.
* @author William Burns
* @see org.infinispan.notifications.Listener
* @since 8.0
*/
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
public @interface CacheEntryExpired {
}