JpaRepository Not supported for DML operations [delete query]

Question

I have written a query to delete some objects in my interface extending JPaRepository, but when I execute the query it throws an exception! Can anyone explain

Answer 1

Try this:

public interface LimitRepository extends JpaRepository {

  @Transactional
  @Modifying
  @Query("delete from CLimit l where l.trader.id =:#{#trader.id}")
  void deleteLimitsByTrader(@Param("trader") CTrader trader);

}

Whenever you are trying to modify a record in db, you have to mark it @Transactional as well as @Modifying, which instruct Spring that it can modify existing records.
The repository method must be void or the exception keeps getting thrown.