On 05/11/2015 03:47 PM, Emily Jiang wrote:
I have a few questions on interceptors:
1. CDI Interceptors on cdi beans
Will the interceptors share the same creational context as the bean it
is associated with?
Yes. It is not the very same creational context but a new one with a
parent-child relationship to the one of the associated bean. This is the
same as for @Dependent dependencies
Will Weld managed the cdi interceptors as well as the old-styled
interceptors?
Yes, Weld manages interceptor bindings associated using interceptor
bindings as well as those associated using @Interceptors
@Interceptors don't work on other cdi beans except ejb and managed
beans, right?
"Managed bean" is ambiguous. Weld support interceptors on all CDI
managed beans (not on producer fields/methods nor extension-provided beans).
2. Interceptors on ejb beans or managed beans
I think the integrator needs to create these @Interceptors and cdi
interceptors.
Yes, for EJBs and EE managed beans it is integrator's job to handle
those. Weld can handle @AroundConstruct interceptors if needed. I've
updated the docs on this topic recently:
https://github.com/jharting/core/blob/a1eb6194be36ded86dc9709c6767f5016fb98997/docs/reference/src/main/asciidoc/ri-spi.asciidoc#around-construct-interception
Will these interceptors use the non-contextual creational context
(scope @Dependent) or use the ejb or managed bean's creational context?
ejb or managed bean's creational context
Will Weld destroy the interceptors when the associated beans are
destroyed or the integrator need to destroy them? This logic
applicable to both cdi interceptors and @Interceptors style
interceptors, right?
Any time the parent (bean's) creational context is destroyed, the
children creational contexts (interceptors') are destroyed also by Weld.
3. Interceptors on JavaEE components
I think this interceptors are created by Weld when the JavaEE
component classes are created, right? By the way, how can the
container make sure to destroy the interceptors?
This depends on how the component classes are managed. Assuming the
components are managed using Weld-provided InjectionTarget then it is up
to the integrator to decide whether it provides interception support or
whether it should be provided by Weld. This can be configured for each
InjectionTarget individually using this builder:
http://docs.jboss.org/weld/javadoc/2.2/weld-spi/org/jboss/weld/manager/api/WeldInjectionTargetBuilder.html
--
Thanks
Emily
=================
Emily Jiang
eji...@apache.org <mailto:eji...@apache.org>
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