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public interface BeanPostProcessor
Factory hook that allows for custom modification of new bean instances, e.g. checking for marker interfaces or wrapping them with proxies.
ApplicationContexts can autodetect BeanPostProcessor beans in their bean definitions and apply them to any beans subsequently created. Plain bean factories allow for programmatic registration of post-processors, applying to all beans created through this factory.
Typically, post-processors that populate beans via marker interfaces
or the like will implement postProcessBeforeInitialization(java.lang.Object, java.lang.String)
,
while post-processors that wrap beans with proxies will normally
implement postProcessAfterInitialization(java.lang.Object, java.lang.String)
.
InstantiationAwareBeanPostProcessor
,
DestructionAwareBeanPostProcessor
,
ConfigurableBeanFactory.addBeanPostProcessor(org.springframework.beans.factory.config.BeanPostProcessor)
,
BeanFactoryPostProcessor
Method Summary | |
---|---|
Object |
postProcessAfterInitialization(Object bean,
String beanName)
Apply this BeanPostProcessor to the given new bean instance after any bean initialization callbacks (like InitializingBean's afterPropertiesSet
or a custom init-method). |
Object |
postProcessBeforeInitialization(Object bean,
String beanName)
Apply this BeanPostProcessor to the given new bean instance before any bean initialization callbacks (like InitializingBean's afterPropertiesSet
or a custom init-method). |
Method Detail |
---|
Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException
afterPropertiesSet
or a custom init-method). The bean will already be populated with property values.
The returned bean instance may be a wrapper around the original.
bean
- the new bean instancebeanName
- the name of the bean
BeansException
- in case of errorsInitializingBean.afterPropertiesSet()
Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException
afterPropertiesSet
or a custom init-method). The bean will already be populated with property values.
The returned bean instance may be a wrapper around the original.
In case of a FactoryBean, this callback will be invoked for both the FactoryBean
instance and the objects created by the FactoryBean (as of Spring 2.0). The
post-processor can decide whether to apply to either the FactoryBean or created
objects or both through corresponding bean instanceof FactoryBean
checks.
This callback will also be invoked after a short-circuiting triggered by a
InstantiationAwareBeanPostProcessor.postProcessBeforeInstantiation(java.lang.Class>, java.lang.String)
method,
in contrast to all other BeanPostProcessor callbacks.
bean
- the new bean instancebeanName
- the name of the bean
BeansException
- in case of errorsInitializingBean.afterPropertiesSet()
,
FactoryBean
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