Question

我正在编写一个查询以返回状态为 False 并按订单日期排序的所有订单。这里基于日期的排序工作正常，但 orderStatus.cancelled=false 不起作用。无论是否取消，我都会收到所有订单。

存储库

public interface OrdersRepository extends JpaRepository<Orders,Integer> {

    @Query("select o from Orders o where o.orderStatus.cancelled=false order by o.orderDate")
    List<Orders> getAllOrders();
}

订单

@Entity
public class Orders {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "order_id")
    private int id;

    @OneToOne(cascade = CascadeType.ALL,fetch = FetchType.EAGER)
    @JoinColumn(name = "order_id")
    @MapsId
    private OrderStatus orderStatus;
}

订单状态

@Entity
public class OrderStatus {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "order_id")
    private int id;
    .....
    .....
    private boolean cancelled;
}

Answer 1

改变

o.orderStatus.cancelled=false

到

o.orderStatus.cancelled='false' 或 o.orderStatus.cancelled is false

Answer 2

更改方法的名称，例如：

public interface OrdersRepository extends JpaRepository<Orders,Integer> {

    @Query("select o from Orders o where o.orderStatus.cancelled=false order by o.orderDate")
    List<Orders> getAllNonCancelledOrders();
}

getAllOrders() 是 JpaRepository 也使用的关键字。

休眠 @Query 不产生所需的输出

2 个答案: