javax.enterprise.inject.spi

Interface ProcessInjectionTarget<X>

Type Parameters:

X - The managed bean class, session bean class or Jakarta EE component class supporting injection

public interface ProcessInjectionTarget<X>

The container fires an event of this type for every Jakarta EE component class supporting injection that may be instantiated by the container at runtime, including every managed bean declared using javax.annotation.ManagedBean, Jakarta Enterprise Bean session or message-driven bean, enabled bean, enabled interceptor or enabled decorator.

Any observer of this event is permitted to wrap and/or replace the InjectionTarget. The container must use the final value of this property, after all observers have been called, whenever it performs injection upon the managed bean, session bean or other Jakarta EE component class supporting injection.

For example, this observer decorates the InjectionTarget for all servlets.

 public <T extends Servlet> void decorateServlet(@Observes ProcessInjectionTarget<T> pit) {
     pit.setInjectionTarget(decorate(pit.getInjectionTarget()));
 }
 

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

Author:

David Allen

See Also:

InjectionTarget

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.
AnnotatedType<X>	getAnnotatedType() Returns the AnnotatedType representing the managed bean class, session bean class or other Jakarta EE component class supporting injection.
InjectionTarget<X>	getInjectionTarget() Returns the InjectionTarget object that will be used by the container to perform injection.
void	setInjectionTarget(InjectionTarget<X> injectionTarget) Replaces the InjectionTarget which performs injection for this target.

Method Detail

getAnnotatedType

AnnotatedType<X> getAnnotatedType()

Returns the AnnotatedType representing the managed bean class, session bean class or other Jakarta EE component class supporting injection.

Returns:

the AnnotatedType of the bean with an injection target

Throws:

IllegalStateException - if called outside of the observer method invocation

getInjectionTarget

InjectionTarget<X> getInjectionTarget()

Returns the InjectionTarget object that will be used by the container to perform injection.

Returns:

the InjectionTarget object which performs the injection

Throws:

IllegalStateException - if called outside of the observer method invocation

setInjectionTarget

void setInjectionTarget(InjectionTarget<X> injectionTarget)

Replaces the InjectionTarget which performs injection for this target.

Parameters:

injectionTarget - The new InjectionTarget to use

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