javax.enterprise.context.control

Interface RequestContextController

public interface RequestContextController

The CDI container provides a built in instance of RequestContextController that is dependent scoped for the purposes of activating and deactivating. For example:

    @Inject
    private RequestContextController requestContextController;

    public void doRequest(String body) {
       // activate request context
       requestContextController.activate();

       // do work in a request context.

       // deactivate the request context
       requestContextController.deactivate();
    }
 

Once the request context has been deactivated, you may activate it once again, creating a brand new request context. The activated request context is bound to the current thread, any injection points targeting a request scoped bean will be satisfied with the same request scoped objects.

Since:

2.0

Author:

John D. Ament

Method Summary

Modifier and Type	Method and Description
boolean	activate() Activates a RequestContext for the current thread if one is not already active.
void	deactivate() Deactivates the current Request Context if it was activated by this context controller.

Method Detail

activate

boolean activate()

Activates a RequestContext for the current thread if one is not already active.

Returns:

true if the context was activated by this invocation, false if not.

deactivate

void deactivate()
         throws ContextNotActiveException

Deactivates the current Request Context if it was activated by this context controller. If the context is active but was not activated by this controller, then it may not be deactivated by this controller, meaning this method will do nothing. If the context is not active, a ContextNotActiveException is thrown.

Throws:

ContextNotActiveException - if the context is not active