将每个参数的本机查询传递到JpaRepository接口

Question

I need to create an interface that extends the JpaRepository where I want to pass a native (select) query by parameter instead of leaving static within the @Query annotation. Instead of using @Query (value = "select * from a where a =: a", nativeQuery = true) I want to use the code sampled below.

 public interface MeuRepository extends JpaRepository<MeuEntity, Integer>{

     @Query(value = query, nativeQuery = true)
     List<MeuEntity> findCustomNativeQuery(String query);
 }

Is it possible to do as the code exemplified above? How?

Answer 1

If you MUST use native queries then do it with custom implementation.

public interface  MeuRepositoryCustom {
  List<MeuEntity> findCustomNativeQuery(String query);
}

then

public class  MeuRepositoryImpl implements  MeuRepositoryCustom{

@PeristenceContext
private EntityManager em; // here you will get plain EntityManager impl.

List<MeuEntity> findCustomNativeQuery(String query){

 TypedQuery<MeuEntity> q=em.createQuery(query,MeuEntity.class)
 return q.getResultList();
}
}

finally your repository interface

public interface MeuRepository extends JpaRepository<MeuEntity, Integer>, MCustomRepository{

 }

Notice that naming is crucial here, as custom interface has to be named ***Custom and its implementation has to be ***Impl

For more information https://docs.spring.io/spring-data/data-commons/docs/1.6.1.RELEASE/reference/html/repositories.html point 1.3

Here is newer version of documentation

https://docs.spring.io/spring-data/jpa/docs/current/reference/html/#repositories.custom-implementations