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JPA: Translating Annotations to Metadata (orm.xml)

 
Greenhorn
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Hi,
I'm trying to translate the commented annotations in the next two classes to metadata:



To do it I have created the next file orm.xml:



Which I reference from the persistence.xml:



Having done only these modifications, the next exception appears when trying to execute the application:



Anybody knows how I can solve it? Or where I can search?

Thank you in advance
 
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