org.axonframework.eventhandling.annotation
Class AnnotationEventListenerAdapter

java.lang.Object
  org.axonframework.eventhandling.annotation.AnnotationEventListenerAdapter

All Implemented Interfaces:

Subscribable, EventListener, EventListenerProxy

public class AnnotationEventListenerAdapter
extends Object
implements Subscribable, EventListenerProxy

Adapter that turns any bean with EventHandler annotated methods into an EventListener.

Since:

0.1

Author:

Allard Buijze

See Also:

EventListener

Constructor Summary

AnnotationEventListenerAdapter(Object annotatedEventListener, EventBus eventBus)
Initialize the AnnotationEventListenerAdapter for the given annotatedEventListener.

Method Summary

Class<?>	getTargetType() Returns the instance type that this proxy delegates all event handling to.
void	handle(EventMessage event) Process the given event.
void	subscribe() Subscribe the EventListener with the configured EventBus.
static AnnotationEventListenerAdapter	subscribe(Object annotatedEventListener, EventBus eventBus) Subscribe the given annotatedEventListener to the given eventBus.
void	unsubscribe() Unsubscribe the EventListener with the configured EventBus.

Methods inherited from class java.lang.Object

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

Constructor Detail

AnnotationEventListenerAdapter

public AnnotationEventListenerAdapter(Object annotatedEventListener,
                                      EventBus eventBus)

Initialize the AnnotationEventListenerAdapter for the given annotatedEventListener. When the adapter subscribes, it will subscribe to the given event bus.

Parameters:

annotatedEventListener - the event listener

eventBus - the event bus to register the event listener to

Method Detail

subscribe

public static AnnotationEventListenerAdapter subscribe(Object annotatedEventListener,
                                                       EventBus eventBus)

Subscribe the given annotatedEventListener to the given eventBus.

Parameters:

annotatedEventListener - The annotated event listener

eventBus - The event bus to subscribe to

Returns:

an AnnotationEventListenerAdapter that wraps the listener. Can be used to unsubscribe.

handle

public void handle(EventMessage event)

Process the given event. The implementation may decide to process or skip the given event. It is highly unrecommended to throw any exception during the event handling process.

Specified by:

handle in interface EventListener

Parameters:

event - the event to handle

unsubscribe

@PreDestroy
public void unsubscribe()

Unsubscribe the EventListener with the configured EventBus.

Specified by:

unsubscribe in interface Subscribable

subscribe

@PostConstruct
public void subscribe()

Subscribe the EventListener with the configured EventBus.

Specified by:

subscribe in interface Subscribable

getTargetType

public Class<?> getTargetType()

Description copied from interface: EventListenerProxy

Returns the instance type that this proxy delegates all event handling to.

Specified by:

getTargetType in interface EventListenerProxy

Returns:

the instance type that this proxy delegates all event handling to