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https://issues.apache.org/jira/browse/ARIES-1533?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15245287#comment-15245287
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Jurriaan Heuberger commented on ARIES-1533:
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This solves my issue...
Thanks Christian
> JPA blueprint AnnotationScanner is unable to handle Interfaces
> --------------------------------------------------------------
>
> Key: ARIES-1533
> URL: https://issues.apache.org/jira/browse/ARIES-1533
> Project: Aries
> Issue Type: Bug
> Components: JPA
> Affects Versions: jpa-2.3.0
> Reporter: Jurriaan Heuberger
> Assignee: Christian Schneider
> Fix For: jpa-2.4.0
>
>
> If there are beans defined in the blueprint with a "class" attribute
> referencing an interface instead of a class, the JPA blueprint
> AnnotationScanner fails with a NullPointerException.
> During the annotation scanning, the assumption is made that the class
> hierarchy will eventually hit the Object.class, while an interface Class<?>
> will return null when the getSuperclass() is called.
> While it may not be a common use case to reference an Interface in a bean
> definition, I have a rather specific use case where I am using a factory
> class with a factory method to return an implementation of an interface.
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