org.axonframework.common.caching

Class EhCacheAdapter

java.lang.Object

org.axonframework.common.caching.AbstractCacheAdapter<net.sf.ehcache.event.CacheEventListener>

org.axonframework.common.caching.EhCacheAdapter

All Implemented Interfaces:

Cache

public class EhCacheAdapter
extends AbstractCacheAdapter<net.sf.ehcache.event.CacheEventListener>

Cache implementation that delegates all calls to an EhCache instance.

Since:

2.1.2

Author:

Allard Buijze

Nested Class Summary

Nested classes/interfaces inherited from interface org.axonframework.common.caching.Cache

Cache.EntryListener, Cache.EntryListenerAdapter

Constructor Summary

Constructors

Constructor and Description
EhCacheAdapter(net.sf.ehcache.Ehcache ehCache) Initialize the adapter to forward all call to the given ehCache instance

Method Summary

Modifier and Type	Method and Description
<V> void	computeIfPresent(Object key, UnaryOperator<V> update) Perform the update in the value behind the given key.
boolean	containsKey(Object key) Indicates whether there is an item stored under given key.
protected org.axonframework.common.caching.EhCacheAdapter.CacheEventListenerAdapter	createListenerAdapter(Cache.EntryListener cacheEntryListener) Creates an adapter for the given cacheEntryListener.
protected Registration	doRegisterListener(net.sf.ehcache.event.CacheEventListener 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
void	put(Object key, Object value) Stores the given value in the cache, under given key.
boolean	putIfAbsent(Object key, Object value) Stores the given value in the cache, under given key, if no element is yet available under that key.
boolean	remove(Object key) Removes the entry stored under given key.
void	removeAll() Remove all stored entries in this cache.

Methods inherited from class org.axonframework.common.caching.AbstractCacheAdapter

registerCacheEntryListener

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.axonframework.common.caching.Cache

computeIfAbsent

Constructor Detail

EhCacheAdapter

public EhCacheAdapter(net.sf.ehcache.Ehcache ehCache)

Initialize the adapter to forward all call to the given ehCache instance

Parameters:

ehCache - The cache instance to forward calls to

Method Detail

get

public <K,V> V get(K key)

Description copied from interface: Cache

Returns an item from the cache, or null if no item was stored under that key

Type Parameters:

K - The type of key used

V - The type of value stored

Parameters:

key - The key under which the item was cached

Returns:

the item stored under the given key

put

public void put(Object key,
                Object value)

Description copied from interface: Cache

Stores the given value in the cache, under given key. If an item already exists, it is updated with the new value.

Parameters:

key - The key under which to store the item

value - The item to cache

putIfAbsent

public boolean putIfAbsent(Object key,
                           Object value)

Description copied from interface: Cache

Stores the given value in the cache, under given key, if no element is yet available under that key. This operation is performed atomically.

Parameters:

key - The key under which to store the item

value - The item to cache

Returns:

true if no value was previously assigned to the key, false otherwise.

remove

public boolean remove(Object key)

Description copied from interface: Cache

Removes the entry stored under given key. If no such entry exists, nothing happens.

Parameters:

key - The key under which the item was stored

Returns:

true if a value was previously assigned to the key and has been removed, false otherwise.

removeAll

public void removeAll()

Description copied from interface: Cache

Remove all stored entries in this cache.

containsKey

public boolean containsKey(Object key)

Description copied from interface: Cache

Indicates whether there is an item stored under given key.

Parameters:

key - The key to check

Returns:

true if an item is available under that key, false otherwise.

computeIfPresent

public <V> void computeIfPresent(Object key,
                                 UnaryOperator<V> update)

Description copied from interface: Cache

Perform the update in the value behind the given key. The update is only executed if there's an entry referencing the key.

Type Parameters:

V - The type of the value to execute the update for.

Parameters:

key - The key to perform an update for, if not empty.

update - The update to perform if the key is present.

createListenerAdapter

protected org.axonframework.common.caching.EhCacheAdapter.CacheEventListenerAdapter createListenerAdapter(Cache.EntryListener cacheEntryListener)

Description copied from class: AbstractCacheAdapter

Creates an adapter for the given cacheEntryListener. The adapter must forward all incoming notifications to the respective methods on the cacheEntryListener.

Specified by:

createListenerAdapter in class AbstractCacheAdapter<net.sf.ehcache.event.CacheEventListener>

Parameters:

cacheEntryListener - The listener to create an adapter for

Returns:

an adapter that forwards notifications

doRegisterListener

protected Registration doRegisterListener(net.sf.ehcache.event.CacheEventListener listenerAdapter)

Description copied from class: AbstractCacheAdapter

Registers the given listener with the cache implementation

Specified by:

doRegisterListener in class AbstractCacheAdapter<net.sf.ehcache.event.CacheEventListener>

Parameters:

listenerAdapter - the listener to register

Returns:

a handle to deregister the listener