[cdi-dev] [JBoss JIRA] (CDI-590) Provide a way to produce any type in a producer

Martin Kouba (JIRA) issues at jboss.org
Tue Mar 22 08:21:00 EDT 2016


    [ https://issues.jboss.org/browse/CDI-590?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13180500#comment-13180500 ] 

Martin Kouba commented on CDI-590:
----------------------------------

I'm not sure I understand the use case. Do you want to declare a producer method whose set of bean types will not be derived from the return type? A more general description would be great. 

> Provide a way to produce any type in a producer
> -----------------------------------------------
>
>                 Key: CDI-590
>                 URL: https://issues.jboss.org/browse/CDI-590
>             Project: CDI Specification Issues
>          Issue Type: Epic
>            Reporter: Romain Manni-Bucau
>
> Note: this is a follow up "adding generic producers to CDI 2.0?" thread on the list
> It is common to rely on a subsystem (another IoC, a coercing system, ...) to produce values. Today a producer can't say "I produce anything in a safe" manner.
> Idea would be for injection point aware producers with a qualifier to producer Object and match all types.
> It needs another flag (can be in @Qualifier or another annotation it is not really important) to say "I produce safely any type".
> I did a PoC on github: https://github.com/rmannibucau/generic-producer-cdi but think it can be a nice feature of CDI 2.0 since it would avoid users to have to dig into extensions for several simple cases (configuration, bridge to other IoC...)



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