org.jboss.as.ejb3.cache.simple

Class SimpleCache<K,V extends Identifiable<K>>

java.lang.Object

org.jboss.as.ejb3.cache.simple.SimpleCache<K,V>

Type Parameters:

K - the cache key type

V - the cache value type

All Implemented Interfaces:

Predicate<K>, Cache<K,V>, org.wildfly.clustering.ee.Restartable, AffinitySupport<K>

public class SimpleCache<K,V extends Identifiable<K>>
extends Object
implements Cache<K,V>, Predicate<K>

Simple Cache implementation using in-memory storage and eager expiration.

Author:

Paul Ferraro

Field Summary

Fields inherited from interface org.jboss.as.ejb3.cache.Cache

CURRENT_GROUP

Constructor Summary

Constructors

Constructor and Description
SimpleCache(StatefulObjectFactory<V> factory, Supplier<K> identifierFactory, StatefulTimeoutInfo timeout, org.jboss.as.server.ServerEnvironment environment)

Method Summary

Modifier and Type	Method and Description
boolean	contains(K key) Indicates whether or not the specified key is contained within this cache.
V	create() Creates and caches a new instance of T.
void	discard(V value) Discard the specified object from cache.
V	get(K key) Get the specified object from cache.
int	getCacheSize()
Supplier<K>	getIdentifierFactory() Returns the identifier factory of this cache.
int	getPassivatedCount()
org.jboss.ejb.client.Affinity	getStrictAffinity()
int	getTotalSize()
org.jboss.ejb.client.Affinity	getWeakAffinity(K key)
void	release(V bean) Decreases the objects usage count.
void	remove(K key) Remove and destroy the specified object from cache.
void	start()
void	stop()
boolean	test(K key)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.jboss.as.ejb3.cache.Cache

isRemotable

Methods inherited from interface java.util.function.Predicate

and, isEqual, negate, or

Constructor Detail

SimpleCache

public SimpleCache(StatefulObjectFactory<V> factory,
                   Supplier<K> identifierFactory,
                   StatefulTimeoutInfo timeout,
                   org.jboss.as.server.ServerEnvironment environment)

Method Detail

start

public void start()

Specified by:

start in interface org.wildfly.clustering.ee.Restartable

stop

public void stop()

Specified by:

stop in interface org.wildfly.clustering.ee.Restartable

getStrictAffinity

public org.jboss.ejb.client.Affinity getStrictAffinity()

Specified by:

getStrictAffinity in interface AffinitySupport<K>

getWeakAffinity

public org.jboss.ejb.client.Affinity getWeakAffinity(K key)

Specified by:

getWeakAffinity in interface AffinitySupport<K>

getIdentifierFactory

public Supplier<K> getIdentifierFactory()

Description copied from interface: Cache

Returns the identifier factory of this cache.

Specified by:

getIdentifierFactory in interface Cache<K,V extends Identifiable<K>>

Returns:

an identifier factory

create

public V create()

Description copied from interface: Cache

Creates and caches a new instance of T.

Specified by:

create in interface Cache<K,V extends Identifiable<K>>

Returns:

a new T

discard

public void discard(V value)

Description copied from interface: Cache

Discard the specified object from cache.

Specified by:

discard in interface Cache<K,V extends Identifiable<K>>

Parameters:

value - the object to discard

remove

public void remove(K key)

Description copied from interface: Cache

Remove and destroy the specified object from cache.

Specified by:

remove in interface Cache<K,V extends Identifiable<K>>

Parameters:

key - the identifier of the object

get

public V get(K key)

Description copied from interface: Cache

Get the specified object from cache. This will mark the object as being in use, and increase its usage count.

Specified by:

get in interface Cache<K,V extends Identifiable<K>>

Parameters:

key - the identifier of the object

Returns:

the object, or null if it does not exist

contains

public boolean contains(K key)

Description copied from interface: Cache

Indicates whether or not the specified key is contained within this cache.

Specified by:

contains in interface Cache<K,V extends Identifiable<K>>

Parameters:

key - the cache key

Returns:

true if the key is present in the cache, false otherwise.

release

public void release(V bean)

Description copied from interface: Cache

Decreases the objects usage count. If the usage count hits 0 then the object will be released.

Specified by:

release in interface Cache<K,V extends Identifiable<K>>

Parameters:

bean - the object

getCacheSize

public int getCacheSize()

Specified by:

getCacheSize in interface Cache<K,V extends Identifiable<K>>

getPassivatedCount

public int getPassivatedCount()

Specified by:

getPassivatedCount in interface Cache<K,V extends Identifiable<K>>

getTotalSize

public int getTotalSize()

Specified by:

getTotalSize in interface Cache<K,V extends Identifiable<K>>

test

public boolean test(K key)

Specified by:

test in interface Predicate<K>