[cdi-dev] explicit bean archives discovery-mode 'annotated'
antoine at sabot-durand.net
Fri Mar 6 05:01:11 EST 2015
I checked that no other IoC framework was using @Interceptor before proposing the fix in CDI-377
> Le 6 mars 2015 à 09:22, Romain Manni-Bucau <rmannibucau at gmail.com> a écrit :
> Well @Interceptor is widely used elsewhere - that's the main one I can think about.
> Romain Manni-Bucau
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> 2015-03-06 9:15 GMT+01:00 Jozef Hartinger <jharting at redhat.com <mailto:jharting at redhat.com>>:
> On 03/06/2015 09:03 AM, Romain Manni-Bucau wrote:
>> Well you cant ask libs to change their programming model for it IMO. It is clearly a regression.
> Why not? Existing applications (empty beans.xml) will still work as before so there is no regression. If a lib wants to support bean-discovery-mode="annotated" then it has to adapt. It would be better if they did not have to but it's too late at this point.
>> Another broken case is if any other IoC uses some of these annotations but doesnt rely on scanning. Now you scan the jar and can get surprises and even an Error.
> Yes, this was a risk when implicit bean archives were introduced. This was in the end mitigated by only making CDI annotations as bean defining (most likely other IoC won't use CDI annotations) plus introducing bdm="none" mode.
>> Le 6 mars 2015 08:12, "Jozef Hartinger" <jharting at redhat.com <mailto:jharting at redhat.com>> a écrit :
>> This interface/enum discovery use-case very often uses a marker
>> annotation (e.g. @MessageBundle). Such extension can work around this
>> limitation by making the marker annotation a @Stereotype. Can you see
>> any other scenarios where implicit bean archives are a problem?
>> On 03/05/2015 09:28 AM, Mark Struberg wrote:
>> > Well, the terms ‚explicit‘ and ‚implicit‘ BDA are blurry as well. I_explicitly_ add a beans.xml with version=1.1 and bean-discovery-mode=„annotated“ and still it is an ‚implicit‘ BDA according to those definitions. Not very self-explaining but anyway. Has not much to do with the current topic as well, so not sure why you mentioned it?
>> > An example of usability would e.g. be the DeltaSpike @MessageBundle feature. Seam3 has had something similar afair.
>> > For those who don’t know it see . You basically have an interface and DeltaSpike automatically picks those up and provides implementations for them which are registered as Beans.
>> > But in the ‚annotated‘ mode we wont get any PAT for those interfaces anymore. The same mechanism is used tor JPA archives, PropertyFileConfig, etc…
>> > Just grep DeltaSpike and check where PAT gets used. It’s all over the place…
>> > LieGrue,
>> > strub
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