如何使一个枚举映射到数据库表？

Question

与此类似的问题： JPA Enum type as table in database

我有这样的枚举：

public enum OrderStatus {

    CREATED(0, true), 
    DRIVER_ASSIGNED(2, false), 
    ROUTE_ASSIGNED(4, false), 

    SUCCESSFULLY_FINISHED(20, true),

    CANCELLED(100, true);

    @Id
    final int id;
    final boolean visibleForClient;

    OrderStatus(int id, boolean visibleForClient) {
        this.id = id;
        this.visibleForClient = visibleForClient;
    }
}

，并希望将其显示为如下表格：

---

| ORDER STATUS         | ID | IS_VISIBLE_FOR_CLIENT |
|----------------------|----|-----------------------|
| CREATED              |  0 | TRUE                  |
| DRIVER_ASSIGNED      |  2 | FALSE                 |
| ROUTE_ASSIGNED       |  4 | FALSE                 |
| SUCCESSFULLY_FINISHED| 20 | TRUE                  |
| CANCELLED            |100 | TRUE                  |

Answer 1

看起来您正在寻找包含上述数据的表的初始数据输入。

1. 您可以通过以下代码创建以上表格结构

   @Entity
   public class OrderTracker {
   
   @Id
   @Column(name = "ID")
   private int id;
   
   @Column(name = "IS_VISIBLE_FOR_CLIENT")
   private boolean visibleForClient;
   
   @Column(name = "ORDER_STATUS")
   @Enumerated(EnumType.STRING)
   private OrderStatus orderStatus;
   
   public OrderTracker(int id, boolean visibleForClient, OrderStatus orderStatus) {
       this.id = id;
       this.visibleForClient = visibleForClient;
       this.orderStatus = orderStatus;
   }
   
   
   //setter & getter 
   
   public enum OrderStatus {
   
       CREATED(0, true),
       DRIVER_ASSIGNED(2, false),
       ROUTE_ASSIGNED(4, false),
       SUCCESSFULLY_FINISHED(20, true),
       CANCELLED(100, true);
   
       final int id;
       final boolean visibleForClient;
       OrderStatus(int id, boolean visibleForClient) {
           this.id = id;
           this.visibleForClient = visibleForClient;
       }
   }
   

   }

2. 要在表上创建初始数据，可以使用flyway或liquibase。