在未映射的 POJO 上使用本机命名查询的 spring 数据存储库

Question

我有一个名为 company 的 POJO，它映射到一个名为 company 的数据库表我有一个只有两个字段的本机查询（来自遗留原因的公司有很多我想删除的急切映射）

系统正在处理 spring 数据我想映射为本地查询并且只将这两个标量填充到我的公司列表中我如何使用 CompanyRepository 来完成它？

@Entity
@Audited
@Table(name = "company")
@Data
@AllArgsConstructor
@NoArgsConstructor
@Builder
  @NamedNativeQuery(
      name = "getDefaultBuyers",
      query =
          "SELECT c.id as id ,c.name as name"
              + "FROM complex query with non mapped tables "
      resultSetMapping = "getDefaultBuyersMapping")

 @SqlResultSetMapping(
      name = "getDefaultBuyers",
      columns = {@ColumnResult(name = "name"),@ColumnResult(name = "id")})
public class Company {
 @Column(name = "id", nullable = false, length = 32)
 protected String id;
@Column(name = "name", nullable = false)
 protected String name;
//diffrent properties 
}

@Repository
public interface CompanyRepository
    extends JpaRepository<Company, Long>, JpaSpecificationExecutor<Company>{}

编辑我不认为它很优雅，但是这个有效，有人可以帮我做得更优雅吗

@Repository
public interface CompanyRepository
    extends JpaRepository<Company, Long>, JpaSpecificationExecutor<Company>{
@Query(
      value =
          "SELECT c.id as id ,c.name as name FROM bidder_config b, native_version n, company c WHERE ...",
      nativeQuery = true)
  Object[][] getDefaultBuyers(); ```

Answer 1

显然弹簧数据中存在一个问题，解决方法如下：

@Repository
public interface CompanyRepository
    extends JpaRepository<Company, Long>, JpaSpecificationExecutor<Company>{
    @Query(nativeQuery = true)
  List<DefaultBuyerDTO> getDefaultBuyers();
}

有关更多信息，请参阅https://github.com/spring-projects/spring-data-examples/tree/master/jpa/jpa21#support-for-custom-sqlresultsetmapping-with-constructorresult