AbstractBeanFactoryBasedTargetSourceCreator (Spring Framework API 2.1) - Spring Framework 2.1.0 API 文档英文版

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

java.lang.Object
  org.springframework.aop.framework.autoproxy.target.AbstractBeanFactoryBasedTargetSourceCreator

All Implemented Interfaces:: TargetSourceCreator, BeanFactoryAware, DisposableBean

Direct Known Subclasses:: LazyInitTargetSourceCreator, QuickTargetSourceCreator

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

protected Log logger


Constructor Summary

AbstractBeanFactoryBasedTargetSourceCreator()


Method Summary

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.

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 Summary
`protected Log`	`logger`

Constructor Summary
`AbstractBeanFactoryBasedTargetSourceCreator()`

Method Summary
`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.
`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.

destroy

public void destroy()

Destroys the internal BeanFactory on shutdown of the TargetSourceCreator.

Specified by:: destroy in interface DisposableBean

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

isPrototypeBased

protected boolean isPrototypeBased()

Return whether this TargetSourceCreator is prototype-based. The "singleton" flag 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