[cdi-dev] [JBoss JIRA] Commented: (CDI-80) Support conversations in Servlet

[Jozef Hartinger (JIRA)]

    [ https://issues.jboss.org/browse/CDI-80?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12629158#comment-12629158 ] 

Jozef Hartinger commented on CDI-80:
------------------------------------

Why is the conversation propagation limited to *GET* request parameter only? If I got it right this rule prevents form-processing servlet-only applications from using the conversation scope.

> Support conversations in Servlet
> --------------------------------
>
>                 Key: CDI-80
>                 URL: https://issues.jboss.org/browse/CDI-80
>             Project: CDI Specification Issues
>          Issue Type: Feature Request
>          Components: Contexts, Java EE integration
>    Affects Versions: 1.0
>            Reporter: Pete Muir
>            Assignee: Pete Muir
>             Fix For: 1.1 (Confirmed)
>
>
> In CDI 1.0, the Conversation Scope has extremely limited availability. It is accessible from after RESTORE_VIEW phase in JSF, to the end of the Response, but this is extremely limiting, and in fact does not even address all use-cases within JSF.
> For instance:
> User has custom PhaseListener for Before RESTORE_VIEW phase, or user has custom PhaseListener that invokes before ConversationPhaseListener.
> In said PhaseListener, user attempts to access a ConversationScoped bean.
> ContextNotActiveException results, even though there may be a valid CID in the Request URL
> Example 2:
> User attempts to access ConversationScope outside of the JSF lifecycle (Via EL in a Servlet or ServletFilter, for instance.)
> ContextNotActiveException results, this just doesn't work!
> There is no reason why the ConversationScope should be any less available than the RequestScope, since both depend on the same underlying context objects. (Request, Session, etc)
> ConversationScope should be ubiquitous in the Servlet Container Request/Response lifecycle. This will greatly improve ability to use CDI in view/web frameworks other than JSF.

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