org.alfresco.repo.cache

Class NullCache

java.lang.Object

org.alfresco.repo.cache.NullCache

All Implemented Interfaces:

org.alfresco.repo.cache.SimpleCache

public class NullCache
extends java.lang.Object
implements org.alfresco.repo.cache.SimpleCache

A cache that does nothing - always.

There are conditions under which code that expects to be caching, should not be. Using this cache, it becomes possible to configure a valid cache in whilst still ensuring that the actual caching is not performed.

Constructor Summary

Constructors

Constructor and Description
NullCache()

Method Summary

Methods

Modifier and Type	Method and Description
void	clear() NO-OP
boolean	contains(java.io.Serializable key) NO-OP
java.lang.Object	get(java.io.Serializable key) NO-OP
static NullCache	getInstance()
java.util.Collection	getKeys()
void	put(java.io.Serializable key, java.lang.Object value) NO-OP
void	remove(java.io.Serializable key) NO-OP

Methods inherited from class java.lang.Object

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

Constructor Detail

NullCache

public NullCache()

Method Detail

getInstance

public static final NullCache getInstance()

Returns:

Returns a singleton that can be used in any way - all operations are stateless

contains

public boolean contains(java.io.Serializable key)

NO-OP

Specified by:

contains in interface org.alfresco.repo.cache.SimpleCache

getKeys

public java.util.Collection getKeys()

Specified by:

getKeys in interface org.alfresco.repo.cache.SimpleCache

get

public java.lang.Object get(java.io.Serializable key)

NO-OP

Specified by:

get in interface org.alfresco.repo.cache.SimpleCache

put

public void put(java.io.Serializable key,
       java.lang.Object value)

NO-OP

Specified by:

put in interface org.alfresco.repo.cache.SimpleCache

remove

public void remove(java.io.Serializable key)

NO-OP

Specified by:

remove in interface org.alfresco.repo.cache.SimpleCache

clear

public void clear()

NO-OP

Specified by:

clear in interface org.alfresco.repo.cache.SimpleCache