public class SourceFilteringListener extends Object implements GenericApplicationListener, SmartApplicationListener
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.
| Modifier | Constructor and Description | 
|---|---|
| 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. | 
| Modifier and Type | Method and Description | 
|---|---|
| int | getOrder()Determine this listener's order in a set of listeners for the same event. | 
| 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. | 
| boolean | supportsEventType(Class<? extends ApplicationEvent> eventType)Determine whether this listener actually supports the given event type. | 
| boolean | supportsEventType(org.springframework.core.ResolvableType eventType)Determine whether this listener actually supports the given event type. | 
| boolean | supportsSourceType(Class<?> sourceType)Determine whether this listener actually supports the given source type. | 
public SourceFilteringListener(Object source, ApplicationListener<?> delegate)
source - the event source that this listener filters for,
 only processing events from this sourcedelegate - the delegate listener to invoke with event
 from the specified sourceprotected SourceFilteringListener(Object source)
onApplicationEventInternal(org.springframework.context.ApplicationEvent)
 method (instead of specifying a delegate listener).source - the event source that this listener filters for,
 only processing events from this sourcepublic void onApplicationEvent(ApplicationEvent event)
ApplicationListeneronApplicationEvent in interface ApplicationListener<ApplicationEvent>event - the event to respond topublic boolean supportsEventType(org.springframework.core.ResolvableType eventType)
GenericApplicationListenersupportsEventType in interface GenericApplicationListenereventType - the event type (never null)public boolean supportsEventType(Class<? extends ApplicationEvent> eventType)
SmartApplicationListenersupportsEventType in interface SmartApplicationListenereventType - the event type (never null)public boolean supportsSourceType(@Nullable
                                  Class<?> sourceType)
GenericApplicationListenerThe default implementation always returns true.
supportsSourceType in interface GenericApplicationListenersupportsSourceType in interface SmartApplicationListenersourceType - the source type, or null if no sourcepublic int getOrder()
GenericApplicationListenerThe default implementation returns Ordered.LOWEST_PRECEDENCE.
getOrder in interface GenericApplicationListenergetOrder in interface SmartApplicationListenergetOrder in interface org.springframework.core.Orderedprotected void onApplicationEventInternal(ApplicationEvent event)
The default implementation invokes the specified delegate, if any.
event - the event to process (matching the specified source)