Top Description Fields Constructors Methods
org.springframework.cache.concurrent

public Class ConcurrentMapCacheFactoryBean

extends Object
implements FactoryBean<ConcurrentMapCache>, BeanNameAware, InitializingBean
Class Inheritance
All Implemented Interfaces
org.springframework.beans.factory.InitializingBean, org.springframework.beans.factory.BeanNameAware, org.springframework.beans.factory.Aware, org.springframework.beans.factory.FactoryBean
Imports
java.util.concurrent.ConcurrentMap, org.springframework.beans.factory.BeanNameAware, .FactoryBean, .InitializingBean, org.springframework.lang.Nullable, org.springframework.util.StringUtils

FactoryBean for easy configuration of a ConcurrentMapCache when used within a Spring container. Can be configured through bean properties; uses the assigned Spring bean name as the default cache name.

Useful for testing or simple caching scenarios, typically in combination with org.springframework.cache.support.SimpleCacheManager or dynamically through ConcurrentMapCacheManager.

Authors
Costin Leau, Juergen Hoeller
Since
3.1

Field Summary

Modifier and TypeField and Description
private boolean
private ConcurrentMapCache
private String
private ConcurrentMap<Object, Object>

Constructor Summary

AccessConstructor and Description
public

Method Summary

Modifier and TypeMethod and Description
public void
afterPropertiesSet()

Implements org.springframework.beans.factory.InitializingBean.afterPropertiesSet.

Invoked by the containing BeanFactory after it has set all bean properties and satisfied BeanFactoryAware, ApplicationContextAware etc.

This method allows the bean instance to perform validation of its overall configuration and final initialization when all bean properties have been set.

public ConcurrentMapCache
getObject()

Implements org.springframework.beans.factory.FactoryBean.getObject.

Return an instance (possibly shared or independent) of the object managed by this factory.

public Class<?>
getObjectType()

Implements org.springframework.beans.factory.FactoryBean.getObjectType.

Return the type of object that this FactoryBean creates, or null if not known in advance.

public boolean
isSingleton()

Overrides default org.springframework.beans.factory.FactoryBean.isSingleton.

Is the object managed by this factory a singleton?

public void
setAllowNullValues(boolean allowNullValues)

Set whether to allow null values (adapting them to an internal null holder value).

public void
setBeanName(String
the name of the bean in the factory. Note that this name is the actual bean name used in the factory, which may differ from the originally specified name: in particular for inner bean names, the actual bean name might have been made unique through appending "#..." suffixes. Use the BeanFactoryUtils#originalBeanName(String) method to extract the original bean name (without suffix), if desired.
beanName
)

Implements org.springframework.beans.factory.BeanNameAware.setBeanName.

Set the name of the bean in the bean factory that created this bean.

public void
setName(String name)

Specify the name of the cache.

public void
setStore(ConcurrentMap<Object, Object> store)

Specify the ConcurrentMap to use as an internal store (possibly pre-populated).

Inherited from java.lang.Object:
cloneequalsfinalizegetClasshashCodenotifynotifyAlltoStringwaitwaitwait

Field Detail

allowNullValuesback to summary
private boolean allowNullValues
cacheback to summary
private ConcurrentMapCache cache
Annotations
@Nullable
nameback to summary
private String name
storeback to summary
private ConcurrentMap<Object, Object> store
Annotations
@Nullable

Constructor Detail

ConcurrentMapCacheFactoryBeanback to summary
public ConcurrentMapCacheFactoryBean()

Method Detail

afterPropertiesSetback to summary
public void afterPropertiesSet()

Implements org.springframework.beans.factory.InitializingBean.afterPropertiesSet.

Doc from org.springframework.beans.factory.InitializingBean.afterPropertiesSet.

Invoked by the containing BeanFactory after it has set all bean properties and satisfied BeanFactoryAware, ApplicationContextAware etc.

This method allows the bean instance to perform validation of its overall configuration and final initialization when all bean properties have been set.

Annotations
@Override
getObjectback to summary
public ConcurrentMapCache getObject()

Implements org.springframework.beans.factory.FactoryBean.getObject.

Doc from org.springframework.beans.factory.FactoryBean.getObject.

Return an instance (possibly shared or independent) of the object managed by this factory.

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.

Returns:ConcurrentMapCache

an instance of the bean (can be null)

Annotations
@Override
@Nullable
getObjectTypeback to summary
public Class<?> getObjectType()

Implements org.springframework.beans.factory.FactoryBean.getObjectType.

Doc from org.springframework.beans.factory.FactoryBean.getObjectType.

Return the type of object that this FactoryBean creates, or 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.

Returns:Class<?>

the type of object that this FactoryBean creates, or null if not known at the time of the call

Annotations
@Override
isSingletonback to summary
public boolean isSingleton()

Overrides default org.springframework.beans.factory.FactoryBean.isSingleton.

Doc from org.springframework.beans.factory.FactoryBean.isSingleton.

Is the object managed by this factory a singleton? That is, will 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.

The default implementation returns true, since a FactoryBean typically manages a singleton instance.

Returns:boolean

whether the exposed object is a singleton

Annotations
@Override
setAllowNullValuesback to summary
public void setAllowNullValues(boolean allowNullValues)

Set whether to allow null values (adapting them to an internal null holder value).

Default is "true".

setBeanNameback to summary
public void setBeanName(String beanName)

Implements org.springframework.beans.factory.BeanNameAware.setBeanName.

Doc from org.springframework.beans.factory.BeanNameAware.setBeanName.

Set the name of the bean in the bean factory that created this bean.

Invoked after population of normal bean properties but before an init callback such as InitializingBean#afterPropertiesSet() or a custom init-method.

Parameters
beanName:String

the name of the bean in the factory. Note that this name is the actual bean name used in the factory, which may differ from the originally specified name: in particular for inner bean names, the actual bean name might have been made unique through appending "#..." suffixes. Use the BeanFactoryUtils#originalBeanName(String) method to extract the original bean name (without suffix), if desired.

Annotations
@Override
setNameback to summary
public void setName(String name)

Specify the name of the cache.

Default is "" (empty String).

setStoreback to summary
public void setStore(ConcurrentMap<Object, Object> store)

Specify the ConcurrentMap to use as an internal store (possibly pre-populated).

Default is a standard java.util.concurrent.ConcurrentHashMap.