Can I combine a @Query definition with a Specification in a Spring Data JPA repository method?

Solution 1:

First thing, you should read this Spring blog post.

Second, according to the JpaSpecificationExecutor interface, that your repositories should implement, the following method take a Specification argument:

• count(Specification<T> spec)
• List<T> findAll(Specification<T> spec)
• Page<T> findAll(Specification<T> spec, Pageable pageable)
• List<T> findAll(Specification<T> spec, Sort sort)
• T findOne(Specification<T> spec)

So, you can't mix a @Query definition with a Specification.

However, since you can express the firstName <> ?1 condition using a Specification and because you combine as many specifications as you want, you can rewrite the whole @Query using Specification(s) only.