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https://issues.jboss.org/browse/CDI-129?page=com.atlassian.jira.plugin.sy...
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Jozef Hartinger commented on CDI-129:
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{quote}Jozef, thanks for your input so far. There are some valid points in your
argumentation and we need to clarify those. I guess we now have a pretty clear picture
that EAR scenario is broken in CDI 1.0 if we use scopes broader than 1 contextual instance
per war.
We also outlined 3 different approaches to treat such scopes. We will schedule an EG
meeting to discuss this in the EG.{quote}
That is a pretty biased conclusion that ignores quite a few parts of the discussion above.
I'll try to come up with a more objective one:
After discussion with Mark and Stuart we all can see that there are two orthogonal issues
involved:
* wiring
** CDI is based on static wiring where the Bean for an injection point is resolved based
on the module the class that declares the injection point is packaged in. (as explained in
Section 5.1 of the CDI 1.0 spec)
** Mark thinks that a semi-static approach, where the Bean for an injection point is
resolved based on the context of the thread in which the execution occurs is more
appropriate. That means that if MailService is invoked from a web application that
packages class B (which specializes A), MailService will also operate on the specialized
version (B).
* the actual span of the @ApplicationScoped (either per-war or per entire ear)
Clarify behaviour of @ApplicationScoped in EARs
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Key: CDI-129
URL:
https://issues.jboss.org/browse/CDI-129
Project: CDI Specification Issues
Issue Type: Clarification
Components: Contexts
Affects Versions: 1.0
Reporter: Mark Struberg
Assignee: Pete Muir
Fix For: 1.1 (Proposed)
Since @ApplicationScoped currently is defined in 6.5.2 as to be 'like in the Servlet
specification' this means that you will get a new instance for every WebApplication
(WAR file).
There is currently no specified CDI scope for providing a single shared instance for a
whole EAR.
We could (ab-)use @Singleton for that, but this is currently not well defined at all.
Alternatively we could introduce an own new annotation like @EnterpriseScoped or likes.
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