javax.enterprise.inject.spi

Interface ProcessObserverMethod<T,X>

Type Parameters:

T - The type of the event being observed

X - The bean type containing the observer method

All Known Subinterfaces:

ProcessSyntheticObserverMethod<T,X>

public interface ProcessObserverMethod<T,X>

The container fires an event of this type for each observer method of each enabled bean, before registering the ObserverMethod object.

For a custom implementation of ObserverMethod, the container must raise an event of type ProcessSyntheticObserverMethod.

Any observer of this event is permitted to wrap and/or replace the ObserverMethod by calling either setObserverMethod(ObserverMethod) or configureObserverMethod(). If both methods are called within an observer notification an IllegalStateException is thrown. The container must use the final value of this property, after all observers have been called, he container must use the final value of this property, after all observers have been called, whenever it performs observer resolution.

If any observer method of a ProcessObserverMethod event throws an exception, the exception is treated as a definition error by the container.

Author:

Gavin King, David Allen, Antoine Sabot-Durand

See Also:

ObserverMethod

Method Summary

Modifier and Type	Method and Description
void	addDefinitionError(Throwable t) Registers a definition error with the container, causing the container to abort deployment after bean discovery is complete.
ObserverMethodConfigurator<T>	configureObserverMethod() Returns a ObserverMethodConfigurator initialized with the ObserverMethod processed by this event, to configure a new ObserverMethod that will replace the original one at the end of the observer invocation.
AnnotatedMethod<X>	getAnnotatedMethod() The AnnotatedMethod representing the observer method.
ObserverMethod<T>	getObserverMethod() The ObserverMethod object that will be used by the container to invoke the observer when a matching event is fired.
void	setObserverMethod(ObserverMethod<T> observerMethod) Replaces the ObserverMethod.
void	veto() Forces the container to ignore the observer method.

Method Detail

getAnnotatedMethod

AnnotatedMethod<X> getAnnotatedMethod()

The AnnotatedMethod representing the observer method.

If invoked upon a ProcessSyntheticObserverMethod event, non-portable behavior results and the returned value should be ignored.

Returns:

the AnnotatedMethod representing the observer method

Throws:

IllegalStateException - if called outside of the observer method invocation

getObserverMethod

ObserverMethod<T> getObserverMethod()

The ObserverMethod object that will be used by the container to invoke the observer when a matching event is fired.

Returns:

the ObserverMethod object that will be used by the container to call the observer method

Throws:

IllegalStateException - if called outside of the observer method invocation

addDefinitionError

void addDefinitionError(Throwable t)

Registers a definition error with the container, causing the container to abort deployment after bean discovery is complete.

Parameters:

t - A Throwable representing the definition error

Throws:

IllegalStateException - if called outside of the observer method invocation

setObserverMethod

void setObserverMethod(ObserverMethod<T> observerMethod)

Replaces the ObserverMethod.

Parameters:

observerMethod - the new ObserverMethod object to use

Throws:

IllegalStateException - if called outside of the observer method invocation

Since:

2.0

configureObserverMethod

ObserverMethodConfigurator<T> configureObserverMethod()

Returns a ObserverMethodConfigurator initialized with the ObserverMethod processed by this event, to configure a new ObserverMethod that will replace the original one at the end of the observer invocation. Each call returns the same ObserverMethodConfigurator

Returns:

a non reusable ObserverMethodConfigurator to configure the replacing ObserverMethod

Throws:

IllegalStateException - if called outside of the observer method invocation

Since:

2.0

veto

void veto()

Forces the container to ignore the observer method.

Throws:

IllegalStateException - if called outside of the observer method invocation

Since:

2.0