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

All Implemented Interfaces:
EventListener, ApplicationListener<ApplicationEvent>, GenericApplicationListener, Ordered
```
public class ApplicationListenerMethodAdapter
extends Object
implements GenericApplicationListener
```
GenericApplicationListener adapter that delegates the processing of an event to an EventListener annotated method.
Delegates to processEvent(ApplicationEvent) to give sub-classes a chance to deviate from the default. Unwraps the content of a PayloadApplicationEvent if necessary to allow method declaration to define any arbitrary event type. If a condition is defined, it is evaluated prior to invoking the underlying method.
Since:
4.2
Author:
Stephane Nicoll, Juergen Hoeller, Sam Brannen

Field Summary
Fields
Modifier and Type Field Description
protected Log logger
- Fields inherited from interface org.springframework.core.Ordered
  HIGHEST_PRECEDENCE, LOWEST_PRECEDENCE

Constructor Summary
Constructors
Constructor Description
ApplicationListenerMethodAdapter(String beanName, Class<?> targetClass, Method method)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected Object`	`doInvoke(Object... args)`	Invoke the event listener method with the given argument values.
`protected String`	`getCondition()`	Return the condition to use.
`protected String`	`getDetailedErrorMessage(Object bean, String message)`	Add additional details such as the bean type and method signature to the given error message.
`int`	`getOrder()`	Get the order value of this object.
`protected Object`	`getTargetBean()`	Return the target bean instance to use.
`protected void`	`handleResult(Object result)`
`void`	`onApplicationEvent(ApplicationEvent event)`	Handle an application event.
`void`	`processEvent(ApplicationEvent event)`	Process the specified `ApplicationEvent`, checking if the condition match and handling non-null result, if any.
`protected Object[]`	`resolveArguments(ApplicationEvent event)`	Resolve the method arguments to use for the specified `ApplicationEvent`.
`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.
`String`	`toString()`

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

- Field Detail
  - logger
```
protected final Log logger
```
- Constructor Detail
  - ApplicationListenerMethodAdapter
```
public ApplicationListenerMethodAdapter(String beanName,
                                        Class<?> targetClass,
                                        Method method)
```
- 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)
  - supportsSourceType
```
public boolean supportsSourceType(Class<?> sourceType)
```
    Description copied from interface: GenericApplicationListener
    Determine whether this listener actually supports the given source type.
    Specified by:
    supportsSourceType in interface GenericApplicationListener
    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
  - processEvent
```
public void processEvent(ApplicationEvent event)
```
    Process the specified ApplicationEvent, checking if the condition match and handling non-null result, if any.
  - resolveArguments
```
protected Object[] resolveArguments(ApplicationEvent event)
```
    Resolve the method arguments to use for the specified ApplicationEvent.
    These arguments will be used to invoke the method handled by this instance. Can return null to indicate that no suitable arguments could be resolved and therefore the method should not be invoked at all for the specified event.
  - handleResult
```
protected void handleResult(Object result)
```
  - doInvoke
```
protected Object doInvoke(Object... args)
```
    Invoke the event listener method with the given argument values.
  - getTargetBean
```
protected Object getTargetBean()
```
    Return the target bean instance to use.
  - getCondition
```
protected String getCondition()
```
    Return the condition to use.
    Matches the condition attribute of the EventListener annotation or any matching attribute on a composed annotation that is meta-annotated with @EventListener.
  - getDetailedErrorMessage
```
protected String getDetailedErrorMessage(Object bean,
                                         String message)
```
    Add additional details such as the bean type and method signature to the given error message.
    Parameters:
    message - error message to append the HandlerMethod details to
  - toString
```
public String toString()
```
    Overrides:
    toString in class Object

Class ApplicationListenerMethodAdapter

Field Summary

Fields inherited from interface org.springframework.core.Ordered

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

logger

Constructor Detail

ApplicationListenerMethodAdapter

Method Detail

onApplicationEvent

supportsEventType

supportsSourceType

getOrder

processEvent

resolveArguments

handleResult

doInvoke

getTargetBean

getCondition

getDetailedErrorMessage

toString