[cdi-dev] [JBoss JIRA] (CDI-420) add a bean-discovery-mode 'scoped'
Mark Struberg (JIRA)
issues at jboss.org
Mon Feb 1 13:05:00 EST 2016
[ https://issues.jboss.org/browse/CDI-420?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13157243#comment-13157243 ]
Mark Struberg commented on CDI-420:
Most of the performance gets lost by parsing the zipstreams from the jar. We also need to check the scopes + stereotypes or 'annotated' as well. The only difference in practice is to create the AnnotatedType + fire the PAT events. Of course this is a bit more than 'annotated', but not much. But the huge benefit is that most CDI Extensions would work with that mode, whereas they are broken with 'annotated'.
Regarding using @WithAnnotations as input for the scanner. Imo that would be a chicken-egg problem.
> add a bean-discovery-mode 'scoped'
> Key: CDI-420
> URL: https://issues.jboss.org/browse/CDI-420
> Project: CDI Specification Issues
> Issue Type: Bug
> Components: Packaging and Deployment
> Affects Versions: TBD
> Reporter: Mark Struberg
> Fix For: 2.0 (discussion)
> This is for some future CDI release.
> We currently only have 3 bean-discovery-modes
> * none
> * all
> * annotated
> The spec also currently says that ProcessAnnotatedType will only get fired (12.4) for
> • each Java class, interface or enum deployed in an explicit bean archive, and
> • each Java class with a bean defining annotation in an implicit bean archive.
> • each session bean
> Which means that we do not get the ProcessAnnotatedType (PAT) event for any class in an 'annotated' or 'implicit' BDA which does _not_ have a bean defining annotation.
> It might be useful to fire the ProcessAnnotatedType for all classes, but do not pick them up as Beans if they (after PAT) do not have a valid scope. Effectively doing the processing but not make them @Dependent automatically if there is no scope annotation at the end of the PAT processing.
> I'm not yet 100% sure how important this distinction is in practice. Just writing this up to not forget about the idea...
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