org.springframework.cache.support

Class CompositeCacheManager

java.lang.Object

org.springframework.cache.support.CompositeCacheManager

All Implemented Interfaces:

InitializingBean, CacheManager

public class CompositeCacheManager
extends Object
implements CacheManager, InitializingBean

Composite CacheManager implementation that iterates over a given collection of delegate CacheManager instances.

Allows NoOpCacheManager to be automatically added to the end of the list for handling cache declarations without a backing store. Otherwise, any custom CacheManager may play that role of the last delegate as well, lazily creating cache regions for any requested name.

Note: Regular CacheManagers that this composite manager delegates to need to return null from getCache(String) if they are unaware of the specified cache name, allowing for iteration to the next delegate in line. However, most CacheManager implementations fall back to lazy creation of named caches once requested; check out the specific configuration details for a 'static' mode with fixed cache names, if available.

Since:

3.1

Author:

Costin Leau, Juergen Hoeller

See Also:

setFallbackToNoOpCache(boolean), ConcurrentMapCacheManager.setCacheNames(java.util.Collection<java.lang.String>)

Constructor Summary

Constructors

Constructor and Description
CompositeCacheManager() Construct an empty CompositeCacheManager, with delegate CacheManagers to be added via the "cacheManagers" property.
CompositeCacheManager(CacheManager... cacheManagers) Construct a CompositeCacheManager from the given delegate CacheManagers.

Method Summary

Modifier and Type	Method and Description
void	afterPropertiesSet() Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).
Cache	getCache(String name) Return the cache associated with the given name.
Collection<String>	getCacheNames() Return a collection of the cache names known by this manager.
void	setCacheManagers(Collection<CacheManager> cacheManagers) Specify the CacheManagers to delegate to.
void	setFallbackToNoOpCache(boolean fallbackToNoOpCache) Indicate whether a NoOpCacheManager should be added at the end of the delegate list.

Methods inherited from class java.lang.Object

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

Constructor Detail

CompositeCacheManager

public CompositeCacheManager()

Construct an empty CompositeCacheManager, with delegate CacheManagers to be added via the "cacheManagers" property.

CompositeCacheManager

public CompositeCacheManager(CacheManager... cacheManagers)

Construct a CompositeCacheManager from the given delegate CacheManagers.

Parameters:

cacheManagers - the CacheManagers to delegate to

Method Detail

setCacheManagers

public void setCacheManagers(Collection<CacheManager> cacheManagers)

Specify the CacheManagers to delegate to.

setFallbackToNoOpCache

public void setFallbackToNoOpCache(boolean fallbackToNoOpCache)

Indicate whether a NoOpCacheManager should be added at the end of the delegate list. In this case, any getCache requests not handled by the configured CacheManagers will be automatically handled by the NoOpCacheManager (and hence never return null).

afterPropertiesSet

public void afterPropertiesSet()

Description copied from interface: InitializingBean

Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).

This method allows the bean instance to perform initialization only possible when all bean properties have been set and to throw an exception in the event of misconfiguration.

Specified by:

afterPropertiesSet in interface InitializingBean

getCache

@Nullable
public Cache getCache(String name)

Description copied from interface: CacheManager

Return the cache associated with the given name.

Specified by:

getCache in interface CacheManager

Parameters:

name - the cache identifier (must not be null)

Returns:

the associated cache, or null if none found

getCacheNames

public Collection<String> getCacheNames()

Description copied from interface: CacheManager

Return a collection of the cache names known by this manager.

Specified by:

getCacheNames in interface CacheManager

Returns:

the names of all caches known by the cache manager