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

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org.springframework.context.event
Class EventPublicationInterceptor

java.lang.Object
  org.springframework.context.event.EventPublicationInterceptor

All Implemented Interfaces:: Advice, Interceptor, MethodInterceptor, InitializingBean, ApplicationEventPublisherAware

public class EventPublicationInterceptor
extends Object
implements MethodInterceptor, ApplicationEventPublisherAware, InitializingBean
extends Object
implements MethodInterceptor, ApplicationEventPublisherAware, InitializingBean

Interceptor that publishes an ApplicationEvent to all ApplicationListeners registered with an ApplicationEventPublisher after each successful method invocation.

Note that this interceptor is only capable of publishing stateless events configured via the "applicationEventClass" property.

Author:: Dmitriy Kopylenko, Juergen Hoeller, Rick Evans
See Also:: setApplicationEventClass(java.lang.Class), ApplicationEvent, ApplicationListener, ApplicationEventPublisher, ApplicationContext

Constructor Summary

EventPublicationInterceptor()


Method Summary

void afterPropertiesSet()
          Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).

Object invoke(MethodInvocation invocation)


void setApplicationEventClass(Class applicationEventClass)
          Set the application event class to publish.

void setApplicationEventPublisher(ApplicationEventPublisher applicationEventPublisher)
          Set the ApplicationEventPublisher that this object runs in.

Methods inherited from class java.lang.Object

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

Constructor Summary
`EventPublicationInterceptor()`

Method Summary
`void`	`afterPropertiesSet()` Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).
`Object`	`invoke(MethodInvocation invocation)`
`void`	`setApplicationEventClass(Class applicationEventClass)` Set the application event class to publish.
`void`	`setApplicationEventPublisher(ApplicationEventPublisher applicationEventPublisher)` Set the ApplicationEventPublisher that this object runs in.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

EventPublicationInterceptor

public EventPublicationInterceptor()

Method Detail

setApplicationEventClass

public void setApplicationEventClass(Class applicationEventClass)

Set the application event class to publish.

The event class must have a constructor with a single Object argument for the event source. The interceptor will pass in the invoked object.

Throws:: IllegalArgumentException - if the supplied Class is null or if it is not an ApplicationEvent subclass or if it does not expose a constructor that takes a single Object argument

setApplicationEventPublisher

public void setApplicationEventPublisher(ApplicationEventPublisher applicationEventPublisher)

Description copied from interface: ApplicationEventPublisherAware

Set the ApplicationEventPublisher that this object runs in.

Invoked after population of normal bean properties but before an init callback like InitializingBean's afterPropertiesSet or a custom init-method. Invoked before ApplicationContextAware's setApplicationContext.

Specified by:: setApplicationEventPublisher in interface ApplicationEventPublisherAware

Parameters:: applicationEventPublisher - event publisher to be used by this object

afterPropertiesSet

public void afterPropertiesSet()
                        throws Exception

Description copied from interface: InitializingBean

Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).

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.

Specified by:: afterPropertiesSet in interface InitializingBean

Throws:: Exception - in the event of misconfiguration (such as failure to set an essential property) or if initialization fails.

invoke

public Object invoke(MethodInvocation invocation)
              throws Throwable

Specified by:: invoke in interface MethodInterceptor

Throws:: Throwable