javax.cache.event
Class CacheEntryEvent<K,V>

java.lang.Object
  java.util.EventObject
      javax.cache.event.CacheEntryEvent<K,V>

Type Parameters:

K - the type of keys maintained by this cache

V - the type of cached values

All Implemented Interfaces:

Serializable

public abstract class CacheEntryEvent<K,V>
extends EventObject

A Cache event base class

Since:

1.0

See Also:

Serialized Form

Field Summary

Fields inherited from class java.util.EventObject

source

Constructor Summary

CacheEntryEvent(Cache source)
Constructs a cache entry event from a given cache as source

Method Summary

abstract K	getKey() Returns the key of the cache entry with the event
abstract V	getOldValue() Returns the value of the cache entry with the event
Cache	getSource()
abstract V	getValue() Returns the value of the cache entry with the event
abstract boolean	isOldValueAvailable() Whether the old value is available

Methods inherited from class java.util.EventObject

toString

Methods inherited from class java.lang.Object

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

Constructor Detail

CacheEntryEvent

public CacheEntryEvent(Cache source)

Constructs a cache entry event from a given cache as source

Parameters:

source - the cache that originated the event

Method Detail

getSource

public final Cache getSource()

Overrides:

getSource in class EventObject

getKey

public abstract K getKey()

Returns the key of the cache entry with the event

Returns:

the key

getValue

public abstract V getValue()

Returns the value of the cache entry with the event

Returns:

the value

getOldValue

public abstract V getOldValue()
                       throws UnsupportedOperationException

Returns the value of the cache entry with the event

Returns:

the value

Throws:

UnsupportedOperationException - if the old value is not available

isOldValueAvailable

public abstract boolean isOldValueAvailable()

Whether the old value is available

Returns:

true if the old value is populated