Is there a way to add JPA annotations at runtime to JAXB generated bean classes using Spring Data JPA?

Asked Oct 10 '18 at 22:07

Active Oct 10 '18 at 22:07

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As part of project requirements, where we need to handle certain volume of data through REST call. Customer would call in a REST service, passing in a payload and distributed a jar of JAXB generated bean classes. Now these classes are not Entity beans by itself. Service should be able to use these JAXB objects and persists them as Entities using Spring Data JPA. But this required @Entity and other annotations required for JPA.

Is there a way to let Spring Data JPA know that these are entities and perform CRUD operations using JpaRespository etc? I know couple of options are discussed Separating JPA information from POJO and Is it possible to build a JPA entity by extending a POJO? . But those two are Hibernate specific solution and have control on the source code of the JAXB beans.

But I'm looking at solution more abstract in Spring Data JPA out of box.

Thanks

asked Oct 10 '18 at 22:07

DBreaker

You might want to look into tools like Byte Buddy and ASM. – Jens Schauder Oct 11 '18 at 09:01
Does this have something to do with my [question here](https://stackoverflow.com/q/44589147/6413377)? – pirho Oct 12 '18 at 21:53
Yes, something like that. Thank you Pirho – DBreaker Oct 14 '18 at 02:08

Is there a way to add JPA annotations at runtime to JAXB generated bean classes using Spring Data JPA?

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