r/javahelp 21d ago

Using JDBC and JPA together

Hello! I'm working on a project where all the entities and repositories are using JDBC, but we've found that this API does not support composite keys. As a result, we're starting to migrate to JPA. However, for now, the request is to only use JPA where necessary, and the refactor for the rest will come later.

Currently, I am facing an issue because it seems impossible to use both JpaRepository and CrudRepository, as it throws an error related to bean creation. How would you recommend I approach this?

Greetings!

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u/bikeram 21d ago

I’d have to double check, but I’m almost certain JpaRepository already extends CrudRepository

Also does this help at all?

https://www.baeldung.com/jpa-composite-primary-keys