Package org.pentaho.reporting.libraries.resourceloader.cache

Class NullResourceBundleDataCache

java.lang.Object

org.pentaho.reporting.libraries.resourceloader.cache.NullResourceBundleDataCache

All Implemented Interfaces:

ResourceBundleDataCache

public class NullResourceBundleDataCache
extends Object
implements ResourceBundleDataCache

Disables caching. It simply returns null on every request and ignores the put requests. You certainly want to use one of the other cache providers in real world applications.

Author:

Thomas Morgner

Constructor Summary

Constructors

Constructor	Description
NullResourceBundleDataCache()

Method Summary

Modifier and Type	Method	Description
void	clear()	Remove all cached entries.
ResourceBundleDataCacheEntry	get(ResourceKey key)	Retrieves the given data from the cache.
ResourceBundleData	put(ResourceManager caller, ResourceBundleData data)	Stores the given data on the cache.
void	remove(ResourceBundleData data)
void	shutdown()

Methods inherited from class java.lang.Object

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

Constructor Detail

NullResourceBundleDataCache

public NullResourceBundleDataCache()

Method Detail

put

public ResourceBundleData put(ResourceManager caller,
                              ResourceBundleData data)
                       throws ResourceLoadingException

Description copied from interface: ResourceBundleDataCache

Stores the given data on the cache. The data is registered by its primary key. The cache has to store the current version of the data.

Specified by:

put in interface ResourceBundleDataCache

Parameters:

caller - the calling resource manager.

data - the data to be stored in the cache

Returns:

the resource data object, possibly wrapped by a cache-specific implementation.

Throws:

ResourceLoadingException - if an error prevents the data from being cached.

get

public ResourceBundleDataCacheEntry get(ResourceKey key)

Description copied from interface: ResourceBundleDataCache

Retrieves the given data from the cache.

Specified by:

get in interface ResourceBundleDataCache

Parameters:

key - the resource key for the data.

Returns:

the cached entry or null, if the entry is no longer in the cache.

remove

public void remove(ResourceBundleData data)

Specified by:

remove in interface ResourceBundleDataCache

clear

public void clear()

Description copied from interface: ResourceBundleDataCache

Remove all cached entries. This should be called after the cache has become invalid or after it has been removed from a resource manager.

Specified by:

clear in interface ResourceBundleDataCache

shutdown

public void shutdown()

Specified by:

shutdown in interface ResourceBundleDataCache