Question

我知道这个问题已被问到several times但是，他们没有帮助我。我有以下测试：

public class PlantCatalogTests {
    @Autowired
    PlantInventoryEntryRepository plantRepo;

    @Test
    public void queryPlantCatalog() {
        assertThat(plantRepo.count(), is(14l)); 
    }

这里是 PlantInventoryEntryRepository

@Repository
public interface PlantInventoryEntryRepository  extends JpaRepository<PlantInventoryEntry, Long> {}

如您所见，此存储库基于 PlantInventoryEntry

类

@Entity
@Data
public class PlantInventoryEntry {

      @Id
      @GeneratedValue
      Long id;

      @OneToOne
      PurchaseOrder plant_id;

      String name;
      String description;

      String price;   
}

PurchaseOrder是另一个类，我在 PlantInventoryEntry 类中有一个实例作为属性：

@Entity
@Data
public class PurchaseOrder {
      @Id
      @GeneratedValue
      Long id;

      List<PlantReservation> reservations;
      PlantInventoryEntry plant;

      LocalDate issueDate;
      LocalDate paymentSchedule;
      @Column(precision=8,scale=2)
      BigDecimal total;

      @Enumerated(EnumType.STRING)
      POStatus status;
      LocalDate startDate;
      LocalDate endDate;
    }

我的主要问题是，当我运行测试时，我面临这个错误：

org.hibernate.MappingException: Could not determine type for: com.example.models.PlantInventoryEntry, at table: purchase_order, for columns: [org.hibernate.mapping.Column(plant)

我该如何解决错误？

Answer 1

您需要在 PurchaseOrder 中的 PlantInventoryEntry 上使用 @ManyToOne 或 @OneToOne 注释来识别关系，取决于实体之间的实际关系。

编辑：您很可能需要确定 PlantReservation 列表与 PurchaseOrder 之间的关系，或者您需要将其标记为 @Transient ，如果它不由JPA管理。

@Entity
@Data
public class PurchaseOrder {
      @Id
      @GeneratedValue
      Long id;

      //  You need to set the mappedBy attribute to the field name
      //  of PurchaseOrder in PlantReservation
      //  Update: omit mappedBy if PurchaseOrder is not mapped in PlantReservation
      @OneToMany(mappedBy="order")
      List<PlantReservation> reservations;

      @ManyToOne
      PlantInventoryEntry plant;

      LocalDate issueDate;
      LocalDate paymentSchedule;
      @Column(precision=8,scale=2)
      BigDecimal total;

      @Enumerated(EnumType.STRING)
      POStatus status;
      LocalDate startDate;
      LocalDate endDate;
    }

org.hibernate.MappingException：无法确定类型：at table：for columns：[org.hibernate.mapping.Column（plant）

1 个答案: