[cdi-dev] explicit bean archives discovery-mode 'annotated'

Martin Kouba mkouba at redhat.com
Thu Mar 5 02:54:57 EST 2015

Hi Mark,

First of all you're talking about _implicit_ bean archives - explict 
bean archive contains a beans.xml with bean-discovery-mode of all, with 
no version number or an empty file.

With regard to usability (from the extension developer point of view) - 
could you give some practical examples? AFAIK it's really useful from 
the app developer point of view.

Dne 4.3.2015 v 20:25 Mark Struberg napsal(a):
> Hi!
> I think I’ve implemented the behavour the spec defines - but it does not make much sense.
> First let’s look at the spec:
> 11.5.6. ProcessAnnotatedType event
> The container must fire an event, before it processes a type, for every Java class, interface
> (excluding the special kind of interface declaration annotation type) or enum DISCOVERED
> as defined in Section 12.4.1, “Type discovery”
> 12.4.1 defines…
> First the container must discover types. The container discovers:
> • each Java class with a bean defining annotation in an implicit bean archive.
> And in 2.5 we can read
> "f the bean discovery mode is annotated then:
> • bean classes that don’t have bean defining annotation (as defined in Section 2.5.1, “Bean defining annotations”) and are not bean classes of sessions beans, are NOT DISCOVERED“
> Which to me means that for a BDA with discovery-mode = „annotated“ we ONLY must fire ProcessAnnotatedType for classes with bean defining annotations, and NOT for interfaces or enums.
> If this is true, then it is a huge mess for lots of CDI Extensions. It basically renders the ‚annotated‘ mode pretty much useless.
> What we really need instead is a mode which will not automatically make a @Dependent bean out of every class later. But I really would ‚discover‘ all classes in a BDA and pass them to ProcessAnnotatedType.
> Some way to fix this or do we have to wait for CDI-2.0 to repair CDI-1.1?
> LieGrue,
> strub
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Martin Kouba
Software Engineer
Red Hat, Czech Republic

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