public class JCacheAdapter extends AbstractCacheAdapter<javax.cache.configuration.CacheEntryListenerConfiguration>
Cache.EntryListener, Cache.EntryListenerAdapter
Constructor and Description |
---|
JCacheAdapter(javax.cache.Cache jCache)
Initialize the adapter to forward call to the given
jCache instance |
Modifier and Type | Method and Description |
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<K> boolean |
containsKey(K key)
Indicates whether there is an item stored under given
key . |
protected javax.cache.configuration.CacheEntryListenerConfiguration |
createListenerAdapter(Cache.EntryListener cacheEntryListener)
Creates an adapter for the given
cacheEntryListener . |
protected Registration |
doRegisterListener(javax.cache.configuration.CacheEntryListenerConfiguration listenerAdapter)
Registers the given listener with the cache implementation
|
<K,V> V |
get(K key)
Returns an item from the cache, or
null if no item was stored under that key |
<K,V> void |
put(K key,
V value)
Stores the given
value in the cache, under given key . |
<K,V> boolean |
putIfAbsent(K key,
V value)
Stores the given
value in the cache, under given key , if no element is yet available
under that key. |
<K> boolean |
remove(K key)
Removes the entry stored under given
key . |
registerCacheEntryListener
public JCacheAdapter(javax.cache.Cache jCache)
jCache
instancejCache
- The cache to forward all calls topublic <K,V> V get(K key)
Cache
null
if no item was stored under that keyK
- The type of key usedV
- The type of value storedkey
- The key under which the item was cachedpublic <K,V> void put(K key, V value)
Cache
value
in the cache, under given key
. If an item already exists,
it is updated with the new value.K
- The type of key usedV
- The type of value storedkey
- The key under which to store the itemvalue
- The item to cachepublic <K,V> boolean putIfAbsent(K key, V value)
Cache
value
in the cache, under given key
, if no element is yet available
under that key. This operation is performed atomically.K
- The type of key usedV
- The type of value storedkey
- The key under which to store the itemvalue
- The item to cachetrue
if no value was previously assigned to the key, false
otherwise.public <K> boolean remove(K key)
Cache
key
. If no such entry exists, nothing happens.K
- The type of key usedkey
- The key under which the item was storedtrue
if a value was previously assigned to the key and has been removed, false
otherwise.public <K> boolean containsKey(K key)
Cache
key
.K
- The type of keykey
- The key to checktrue
if an item is available under that key, false
otherwise.protected javax.cache.configuration.CacheEntryListenerConfiguration createListenerAdapter(Cache.EntryListener cacheEntryListener)
AbstractCacheAdapter
cacheEntryListener
. The adapter must forward all incoming
notifications to the respective methods on the cacheEntryListener
.createListenerAdapter
in class AbstractCacheAdapter<javax.cache.configuration.CacheEntryListenerConfiguration>
cacheEntryListener
- The listener to create an adapter forprotected Registration doRegisterListener(javax.cache.configuration.CacheEntryListenerConfiguration listenerAdapter)
AbstractCacheAdapter
doRegisterListener
in class AbstractCacheAdapter<javax.cache.configuration.CacheEntryListenerConfiguration>
listenerAdapter
- the listener to registerCopyright © 2010–2018. All rights reserved.