[jboss-jira] [JBoss JIRA] (WFLY-1032) Enhance validation message when multiple persistence units are found

[Oliver Gierke (JIRA)]

    [ https://issues.jboss.org/browse/WFLY-1032?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12782854#comment-12782854 ] 

Oliver Gierke commented on WFLY-1032:
-------------------------------------

So why is the class then scanned at all? {{@PersistenceContext}} injection is only supposed to happen for managed classes (according to 7.2.1 of JPA 2.0) which the one under consideration clearly is not (it's neither JavaEE bean nor fulfils the requirements to be considered a CDI bean).
                
> Enhance validation message when multiple persistence units are found
> --------------------------------------------------------------------
>
>                 Key: WFLY-1032
>                 URL: https://issues.jboss.org/browse/WFLY-1032
>             Project: WildFly
>          Issue Type: Enhancement
>          Components: JPA / Hibernate
>            Reporter: Markus Dahm
>            Assignee: Scott Marlow
>            Priority: Minor
>             Fix For: 8.0.0.Alpha2
>
>
> The current message is
>     Caused by: java.lang.IllegalArgumentException: JBAS011470: Persistence unitName was not specified and there are 9 persistence unit definitions in application deployment "test.ear".  Either change the application to have only one persistence unit definition or specify the unitName for each reference to a persistence unit.
> Yet what is always helpful in search of such validation errors is the context.
> In that case the offending class name would suffice, you should have this information at hands since you're scanning the classes, right?
>  
> Given that information I'd have found the problem immediately.

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