org.springframework.context.event

Class GenericApplicationListenerAdapter

java.lang.Object

org.springframework.context.event.GenericApplicationListenerAdapter

All Implemented Interfaces:

EventListener, ApplicationListener<ApplicationEvent>, GenericApplicationListener, SmartApplicationListener, Ordered

public class GenericApplicationListenerAdapter
extends Object
implements GenericApplicationListener, SmartApplicationListener

GenericApplicationListener adapter that determines supported event types through introspecting the generically declared type of the target listener.

Since:

3.0

Author:

Juergen Hoeller, Stephane Nicoll

See Also:

ApplicationListener.onApplicationEvent(E)

Field Summary

Fields inherited from interface org.springframework.core.Ordered

HIGHEST_PRECEDENCE, LOWEST_PRECEDENCE

Constructor Summary

Constructors

Constructor and Description
GenericApplicationListenerAdapter(ApplicationListener<?> delegate) Create a new GenericApplicationListener for the given delegate.

Method Summary

Modifier and Type	Method and Description
int	getOrder() Get the order value of this object.
void	onApplicationEvent(ApplicationEvent event) Handle an application event.
boolean	supportsEventType(Class<? extends ApplicationEvent> eventType) Determine whether this listener actually supports the given event type.
boolean	supportsEventType(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.

Methods inherited from class java.lang.Object

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

Constructor Detail

GenericApplicationListenerAdapter

public GenericApplicationListenerAdapter(ApplicationListener<?> delegate)

Create a new GenericApplicationListener for the given delegate.

Parameters:

delegate - the delegate listener to be invoked

Method Detail

onApplicationEvent

public void onApplicationEvent(ApplicationEvent event)

Description copied from interface: ApplicationListener

Handle an application event.

Specified by:

onApplicationEvent in interface ApplicationListener<ApplicationEvent>

Parameters:

event - the event to respond to

supportsEventType

public boolean supportsEventType(ResolvableType eventType)

Description copied from interface: GenericApplicationListener

Determine whether this listener actually supports the given event type.

Specified by:

supportsEventType in interface GenericApplicationListener

Parameters:

eventType - the event type (never null)

supportsEventType

public boolean supportsEventType(Class<? extends ApplicationEvent> eventType)

Description copied from interface: SmartApplicationListener

Determine whether this listener actually supports the given event type.

Specified by:

supportsEventType in interface SmartApplicationListener

Parameters:

eventType - the event type (never null)

supportsSourceType

public boolean supportsSourceType(@Nullable
                                  Class<?> sourceType)

Description copied from interface: GenericApplicationListener

Determine whether this listener actually supports the given source type.

Specified by:

supportsSourceType in interface GenericApplicationListener

Specified by:

supportsSourceType in interface SmartApplicationListener

Parameters:

sourceType - the source type, or null if no source

getOrder

public int getOrder()

Description copied from interface: Ordered

Get the order value of this object.

Higher values are interpreted as lower priority. As a consequence, the object with the lowest value has the highest priority (somewhat analogous to Servlet load-on-startup values).

Same order values will result in arbitrary sort positions for the affected objects.

Specified by:

getOrder in interface Ordered

Returns:

the order value

See Also:

Ordered.HIGHEST_PRECEDENCE, Ordered.LOWEST_PRECEDENCE