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SourceFilteringListener (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 SourceFilteringListener

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

All Implemented Interfaces:

EventListener, ApplicationListener

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public class SourceFilteringListener
extends Object
implements ApplicationListener

ApplicationListener decorator that filters events from a specified event source, invoking its delegate listener for matching ApplicationEvent objects only.

Can also be used as base class, overriding the onApplicationEventInternal(org.springframework.context.ApplicationEvent) method instead of specifying a delegate listener.

Since:

2.0.5

Author:

Juergen Hoeller

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Constructor Summary
protected	SourceFilteringListener(Object source)           Create a SourceFilteringListener for the given event source, expecting subclasses to override the onApplicationEventInternal(org.springframework.context.ApplicationEvent) method (instead of specifying a delegate listener).
	SourceFilteringListener(Object source, ApplicationListener delegate)           Create a SourceFilteringListener for the given event source.

 

Method Summary
void	onApplicationEvent(ApplicationEvent event)           Handle an application event.
protected  void	onApplicationEventInternal(ApplicationEvent event)           Actually process the event, after having filtered according to the desired event source already.

 

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

 

Constructor Detail

SourceFilteringListener

public SourceFilteringListener(Object source,
                               ApplicationListener delegate)

Create a SourceFilteringListener for the given event source.

Parameters:

source - the event source that this listener filters for, only processing events from this source

delegate - the delegate listener to invoke with event from the specified source

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SourceFilteringListener

protected SourceFilteringListener(Object source)

Create a SourceFilteringListener for the given event source, expecting subclasses to override the onApplicationEventInternal(org.springframework.context.ApplicationEvent) method (instead of specifying a delegate listener).

Parameters:

source - the event source that this listener filters for, only processing events from this source

Method Detail

onApplicationEvent

public void onApplicationEvent(ApplicationEvent event)

Description copied from interface: ApplicationListener

Handle an application event.

Specified by:

onApplicationEvent in interface ApplicationListener

Parameters:

event - the event to respond to

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onApplicationEventInternal

protected void onApplicationEventInternal(ApplicationEvent event)

Actually process the event, after having filtered according to the desired event source already.

The default implementation invokes the specified delegate, if any.

Parameters:

event - the event to process (matching the specified source)

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