Spring jpql查询

Question

我想知道是否可以通过spring存储库执行jpql查询，并能够使用分页作为排序特性，因为它可以附带示例和规范。我想做这样的事情：

findAll(String jpql, Pageable pageable)

QueryByExampleExecutor接口，即声明：

findAll(Example<S> example, Pageable pageable);

JpaSpecificationExecutor接口声明：

Page<T> findAll(Specification<T> spec, Pageable pageable);

Answer 1

根据春季数据文档，即使使用本机查询也应该是可能的。请看一下示例51：

public interface UserRepository extends JpaRepository<User, Long> {

  @Query(value = "SELECT * FROM USERS WHERE LASTNAME = ?1",
    countQuery = "SELECT count(*) FROM USERS WHERE LASTNAME = ?1",
    nativeQuery = true)
  Page<User> findByLastname(String lastname, Pageable pageable);
}

根据文档，排序似乎也是可能的

public interface UserRepository extends JpaRepository<User, Long> {

  @Query("select u from User u where u.lastname like ?1%")
  List<User> findByAndSort(String lastname, Sort sort);

  @Query("select u.id, LENGTH(u.firstname) as fn_len from User u where u.lastname like ?1%")
  List<Object[]> findByAsArrayAndSort(String lastname, Sort sort);
}