[cdi-dev] [JBoss JIRA] (CDI-572) support JSR-303 bean validation in CDI beans

[Mark Struberg (JIRA)]

    [ https://issues.jboss.org/browse/CDI-572?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13128343#comment-13128343 ] 

Mark Struberg commented on CDI-572:
-----------------------------------

[~mkouba] yes, @Inject might be needed. But one could also use @PostConstruct to init this field. Or use Method injection. All that doesn't matter. Point is that _after_ all the injection was done and the instance is fully initialized it could be useful to invoke JSR-303 on it.

> Also what should happen if a validation fails?
Well that's a good question. What happens if there is some Exception in @PostConstruct? Guess the same should happen here as well. Or even throw a nice validation Exception.

I agree with [[~Sven Linstaedt] that those checks only make sense at runtime. It might as well be that it fails for one request but passes for another one... If you think about business data producers this also makes perfect sense.

> support JSR-303 bean validation in CDI beans
> --------------------------------------------
>
>                 Key: CDI-572
>                 URL: https://issues.jboss.org/browse/CDI-572
>             Project: CDI Specification Issues
>          Issue Type: Epic
>            Reporter: Mark Struberg
>
> Consider a bean like 
> {code}
> @SessionScoped
> public class CurrentUser {
>   @javax.validation.constraint.NotNull
>   @javax.validation.constraint.Length(10)
>   private String userId;
>   ...
> }
> {code}
> We could easily check this and invoke JSR-303 (if available) in the Producer<T>. Please note that for a custom Producer they have to care for it themselves.



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