[cdi-dev] [JBoss JIRA] Commented: (CDI-113) Add some design time readable metadata for built-in beans of CDI-implementations.

Tue Mar 29 17:56:37 EDT 2011

    [ https://issues.jboss.org/browse/CDI-113?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12592528#comment-12592528 ] 

Dan Allen commented on CDI-113:
-------------------------------

I don't think that Weld loads any beans from jars which don't have beans.xml. Any built-in bean that Weld provides is clearly documented in the CDI specification. Examples include BeanManager, UserTransaction and a few others (security principle, validation factory). Some may depend on the runtime environment (such as when Weld runs in a Servlet environment). However, these cases are well specified.

It's accurate to say that extensions can load beans from jars which don't have beans.xml. The most basic example is using the BeforeBeanDiscovery#addAnnotatedType() in an extension method that observes this event. It's those cases when metadata is probably useful. Granted, this would have been possible had the XML configuration schema been approved. So perhaps the right approach is to pursue that request. 

> Add some design time readable metadata for built-in beans of CDI-implementations.
> ---------------------------------------------------------------------------------
>
>                 Key: CDI-113
>                 URL: https://issues.jboss.org/browse/CDI-113
>             Project: CDI Specification Issues
>          Issue Type: Feature Request
>            Reporter: Alexey Kazakov
>
> We need such metadata for tooling.
> It would be very helpful to have some metadata for beans which implement spec required services (BeanManager, ...)
> Or for any other beans which CDI implementations register programmatically and which should be available for users.
> For example Weld loads some beans from jars which don't have beans.xml but some of those beans are available for injections.
> So far we don't have any documented way to recognize such beans.

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