public class EhCacheManagerFactoryBean extends Object implements FactoryBean<CacheManager>, InitializingBean, DisposableBean
FactoryBeanthat exposes an EhCache
CacheManagerinstance (independent or shared), configured from a specified config location.
If no config location is specified, a CacheManager will be configured from "ehcache.xml" in the root of the class path (that is, default EhCache initialization - as defined in the EhCache docs - will apply).
Setting up a separate EhCacheManagerFactoryBean is also advisable when using EhCacheFactoryBean, as it provides a (by default) independent CacheManager instance and cares for proper shutdown of the CacheManager. EhCacheManagerFactoryBean is also necessary for loading EhCache configuration from a non-default config location.
Note: As of Spring 5.0, Spring's EhCache support requires EhCache 2.10 or higher.
|Constructor and Description|
|Modifier and Type||Method and Description|
Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).
Invoked by a BeanFactory on destruction of a singleton.
Return an instance (possibly shared or independent) of the object managed by this factory.
Return the type of object that this FactoryBean creates, or
Is the object managed by this factory a singleton? That is, will
Set whether an existing EhCache CacheManager of the same name will be accepted for this EhCacheManagerFactoryBean setup.
Set the name of the EhCache CacheManager (if a specific name is desired).
Set the location of the EhCache config file.
Set whether the EhCache CacheManager should be shared (as a singleton at the ClassLoader level) or independent (typically local within the application).
protected final Log logger
public void setConfigLocation(Resource configLocation)
Default is "ehcache.xml" in the root of the class path, or if not found, "ehcache-failsafe.xml" in the EhCache jar (default EhCache initialization).
public void setCacheManagerName(String cacheManagerName)
public void setAcceptExisting(boolean acceptExisting)
Typically used in combination with
but will simply work with the default CacheManager name if none specified.
All references to the same CacheManager name (or the same default) in the
same ClassLoader space will share the specified CacheManager then.
public void setShared(boolean shared)
NOTE: This feature allows for sharing this EhCacheManagerFactoryBean's
CacheManager with any code calling
CacheManager.create() in the same
ClassLoader space, with no need to agree on a specific CacheManager name.
However, it only supports a single EhCacheManagerFactoryBean involved which will
control the lifecycle of the underlying CacheManager (in particular, its shutdown).
This flag overrides
"acceptExisting" if both are set,
since it indicates the 'stronger' mode of sharing.
public void afterPropertiesSet() throws CacheException
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.
public CacheManager getObject()
As with a
BeanFactory, this allows support for both the
Singleton and Prototype design pattern.
If this FactoryBean is not fully initialized yet at the time of
the call (for example because it is involved in a circular reference),
throw a corresponding
As of Spring 2.0, FactoryBeans are allowed to return
objects. The factory will consider this as normal value to be used; it
will not throw a FactoryBeanNotInitializedException in this case anymore.
FactoryBean implementations are encouraged to throw
FactoryBeanNotInitializedException themselves now, as appropriate.
public Class<? extends CacheManager> getObjectType()
nullif not known in advance.
This allows one to check for specific types of beans without instantiating objects, for example on autowiring.
In the case of implementations that are creating a singleton object, this method should try to avoid singleton creation as far as possible; it should rather estimate the type in advance. For prototypes, returning a meaningful type here is advisable too.
This method can be called before this FactoryBean has been fully initialized. It must not rely on state created during initialization; of course, it can still use such state if available.
NOTE: Autowiring will simply ignore FactoryBeans that return
null here. Therefore it is highly recommended to implement
this method properly, using the current state of the FactoryBean.
nullif not known at the time of the call
public boolean isSingleton()
FactoryBean.getObject()always return the same object (a reference that can be cached)?
NOTE: If a FactoryBean indicates to hold a singleton object,
the object returned from
getObject() might get cached
by the owning BeanFactory. Hence, do not return
unless the FactoryBean always exposes the same reference.
The singleton status of the FactoryBean itself will generally be provided by the owning BeanFactory; usually, it has to be defined as singleton there.
NOTE: This method returning
false does not
necessarily indicate that returned objects are independent instances.
An implementation of the extended
may explicitly indicate independent instances through its
SmartFactoryBean.isPrototype() method. Plain
implementations which do not implement this extended interface are
simply assumed to always return independent instances if the
isSingleton() implementation returns
The default implementation returns
true, since a
FactoryBean typically manages a singleton instance.