public class EhCacheManagerFactoryBean extends Object implements FactoryBean<net.sf.ehcache.CacheManager>, InitializingBean, DisposableBean
FactoryBean
that exposes an EhCache CacheManager
instance (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 4.1, Spring's EhCache support requires EhCache 2.5 or higher.
setConfigLocation(org.springframework.core.io.Resource)
,
setShared(boolean)
,
EhCacheFactoryBean
,
CacheManager
Constructor and Description |
---|
EhCacheManagerFactoryBean() |
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).
|
void |
destroy()
Invoked by a BeanFactory on destruction of a singleton.
|
net.sf.ehcache.CacheManager |
getObject()
Return an instance (possibly shared or independent) of the object
managed by this factory.
|
Class<? extends net.sf.ehcache.CacheManager> |
getObjectType()
Return the type of object that this FactoryBean creates,
or
null if not known in advance. |
boolean |
isSingleton()
Is the object managed by this factory a singleton? That is,
will
FactoryBean.getObject() always return the same object
(a reference that can be cached)? |
void |
setAcceptExisting(boolean acceptExisting)
Set whether an existing EhCache CacheManager of the same name will be accepted
for this EhCacheManagerFactoryBean setup.
|
void |
setCacheManagerName(String cacheManagerName)
Set the name of the EhCache CacheManager (if a specific name is desired).
|
void |
setConfigLocation(Resource configLocation)
Set the location of the EhCache config file.
|
void |
setShared(boolean shared)
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).
CacheManager.create(java.io.InputStream)
,
CacheManager.CacheManager(java.io.InputStream)
public void setCacheManagerName(String cacheManagerName)
net.sf.ehcache.CacheManager#setName(String)
public void setAcceptExisting(boolean acceptExisting)
Typically used in combination with "cacheManagerName"
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.
#see #setShared
,
CacheManager.getCacheManager(String)
,
CacheManager.CacheManager()
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.
setCacheManagerName(java.lang.String)
,
setAcceptExisting(boolean)
,
CacheManager.create()
,
CacheManager.CacheManager()
public void afterPropertiesSet() throws net.sf.ehcache.CacheException
InitializingBean
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.
afterPropertiesSet
in interface InitializingBean
net.sf.ehcache.CacheException
public net.sf.ehcache.CacheManager getObject()
FactoryBean
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 FactoryBeanNotInitializedException
.
As of Spring 2.0, FactoryBeans are allowed to return null
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.
getObject
in interface FactoryBean<net.sf.ehcache.CacheManager>
null
)FactoryBeanNotInitializedException
public Class<? extends net.sf.ehcache.CacheManager> getObjectType()
FactoryBean
null
if 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.
getObjectType
in interface FactoryBean<net.sf.ehcache.CacheManager>
null
if not known at the time of the callListableBeanFactory.getBeansOfType(java.lang.Class<T>)
public boolean isSingleton()
FactoryBean
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 true
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 SmartFactoryBean
interface
may explicitly indicate independent instances through its
SmartFactoryBean.isPrototype()
method. Plain FactoryBean
implementations which do not implement this extended interface are
simply assumed to always return independent instances if the
isSingleton()
implementation returns false
.
isSingleton
in interface FactoryBean<net.sf.ehcache.CacheManager>
FactoryBean.getObject()
,
SmartFactoryBean.isPrototype()
public void destroy()
DisposableBean
destroy
in interface DisposableBean