org.springframework.aop.framework.autoproxy.target

Class AbstractBeanFactoryBasedTargetSourceCreator

java.lang.Object

org.springframework.aop.framework.autoproxy.target.AbstractBeanFactoryBasedTargetSourceCreator

All Implemented Interfaces:

TargetSourceCreator, Aware, BeanFactoryAware, DisposableBean

Direct Known Subclasses:

LazyInitTargetSourceCreator, QuickTargetSourceCreator

public abstract class AbstractBeanFactoryBasedTargetSourceCreator
extends Object
implements TargetSourceCreator, BeanFactoryAware, DisposableBean

Convenient superclass for TargetSourceCreator implementations that require creating multiple instances of a prototype bean.

Uses an internal BeanFactory to manage the target instances, copying the original bean definition to this internal factory. This is necessary because the original BeanFactory will just contain the proxy instance created through auto-proxying.

Requires running in an AbstractBeanFactory.

Author:

Rod Johnson, Juergen Hoeller

See Also:

AbstractBeanFactoryBasedTargetSource, AbstractBeanFactory

Field Summary

Fields

Modifier and Type	Field and Description
protected Log	logger

Constructor Summary

Constructors

Constructor and Description
AbstractBeanFactoryBasedTargetSourceCreator()

Method Summary

Modifier and Type	Method and Description
protected DefaultListableBeanFactory	buildInternalBeanFactory(ConfigurableBeanFactory containingFactory) Build an internal BeanFactory for resolving target beans.
protected abstract AbstractBeanFactoryBasedTargetSource	createBeanFactoryBasedTargetSource(Class<?> beanClass, String beanName) Subclasses must implement this method to return a new AbstractPrototypeBasedTargetSource if they wish to create a custom TargetSource for this bean, or null if they are not interested it in, in which case no special target source will be created.
void	destroy() Destroys the internal BeanFactory on shutdown of the TargetSourceCreator.
protected BeanFactory	getBeanFactory() Return the BeanFactory that this TargetSourceCreators runs in.
protected DefaultListableBeanFactory	getInternalBeanFactoryForBean(String beanName) Return the internal BeanFactory to be used for the specified bean.
TargetSource	getTargetSource(Class<?> beanClass, String beanName) Create a special TargetSource for the given bean, if any.
protected boolean	isPrototypeBased() Return whether this TargetSourceCreator is prototype-based.
void	setBeanFactory(BeanFactory beanFactory) Callback that supplies the owning factory to a bean instance.

Methods inherited from class java.lang.Object

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

Field Detail

logger

protected final Log logger

Constructor Detail

AbstractBeanFactoryBasedTargetSourceCreator

public AbstractBeanFactoryBasedTargetSourceCreator()

Method Detail

setBeanFactory

public final void setBeanFactory(BeanFactory beanFactory)

Description copied from interface: BeanFactoryAware

Callback that supplies the owning factory to a bean instance.

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

Specified by:

setBeanFactory in interface BeanFactoryAware

Parameters:

beanFactory - owning BeanFactory (never null). The bean can immediately call methods on the factory.

See Also:

BeanInitializationException

getBeanFactory

protected final BeanFactory getBeanFactory()

Return the BeanFactory that this TargetSourceCreators runs in.

getTargetSource

public final TargetSource getTargetSource(Class<?> beanClass,
                                          String beanName)

Description copied from interface: TargetSourceCreator

Create a special TargetSource for the given bean, if any.

Specified by:

getTargetSource in interface TargetSourceCreator

Parameters:

beanClass - the class of the bean to create a TargetSource for

beanName - the name of the bean

Returns:

a special TargetSource or null if this TargetSourceCreator isn't interested in the particular bean

getInternalBeanFactoryForBean

protected DefaultListableBeanFactory getInternalBeanFactoryForBean(String beanName)

Return the internal BeanFactory to be used for the specified bean.

Parameters:

beanName - the name of the target bean

Returns:

the internal BeanFactory to be used

buildInternalBeanFactory

protected DefaultListableBeanFactory buildInternalBeanFactory(ConfigurableBeanFactory containingFactory)

Build an internal BeanFactory for resolving target beans.

Parameters:

containingFactory - the containing BeanFactory that originally defines the beans

Returns:

an independent internal BeanFactory to hold copies of some target beans

destroy

public void destroy()

Destroys the internal BeanFactory on shutdown of the TargetSourceCreator.

Specified by:

destroy in interface DisposableBean

See Also:

getInternalBeanFactoryForBean(java.lang.String)

isPrototypeBased

protected boolean isPrototypeBased()

Return whether this TargetSourceCreator is prototype-based. The scope of the target bean definition will be set accordingly.

Default is "true".

See Also:

BeanDefinition.isSingleton()

createBeanFactoryBasedTargetSource

protected abstract AbstractBeanFactoryBasedTargetSource createBeanFactoryBasedTargetSource(Class<?> beanClass,
                                                                                           String beanName)

Subclasses must implement this method to return a new AbstractPrototypeBasedTargetSource if they wish to create a custom TargetSource for this bean, or null if they are not interested it in, in which case no special target source will be created. Subclasses should not call setTargetBeanName or setBeanFactory on the AbstractPrototypeBasedTargetSource: This class' implementation of getTargetSource() will do that.

Parameters:

beanClass - the class of the bean to create a TargetSource for

beanName - the name of the bean

Returns:

the AbstractPrototypeBasedTargetSource, or null if we don't match this