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

All Implemented Interfaces:
EventListener, ApplicationListener<ApplicationEvent>, GenericApplicationListener, SmartApplicationListener, Ordered
```
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.
Since:
2.0.5
Author:
Juergen Hoeller, Stephane Nicoll

Field Summary
- Fields inherited from interface org.springframework.core.Ordered
  HIGHEST_PRECEDENCE, LOWEST_PRECEDENCE

Constructor Summary

Constructors
Modifier	Constructor	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.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	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(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
  - 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
  - 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<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.
    The default implementation always returns true.
    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: GenericApplicationListener
    Determine this listener's order in a set of listeners for the same event.
    The default implementation returns Ordered.LOWEST_PRECEDENCE.
    Specified by:
    getOrder in interface GenericApplicationListener
    Specified by:
    getOrder in interface Ordered
    Specified by:
    getOrder in interface SmartApplicationListener
    Returns:
    the order value
    See Also:
    Ordered.HIGHEST_PRECEDENCE, Ordered.LOWEST_PRECEDENCE
  - 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)

Class SourceFilteringListener

Field Summary

Fields inherited from interface org.springframework.core.Ordered

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

SourceFilteringListener

SourceFilteringListener

Method Detail

onApplicationEvent

supportsEventType

supportsEventType

supportsSourceType

getOrder

onApplicationEventInternal