java - 连接列留空

Question

我有两个类。第一:

@Entity
@Table(name = "region", schema="building")
public class Region {

    /**
     * id
     */
    @Id
    @Column(name = "regionid")
    @GeneratedValue(strategy= GenerationType.IDENTITY)
    private Long id;

    @OneToMany(cascade = CascadeType.ALL)
    @JoinColumn(name = "regionid", referencedColumnName = "regionid", insertable = false, updatable = false)
    private List<Polygon> polygonsList;

}

第二:

@Entity
@Table(name = "polygon", schema="building")
public class Polygon {

    /**
     * id
     */
    @Id
    @Column(name = "polygonid")
    @GeneratedValue(strategy= GenerationType.IDENTITY)
    private Long id;

}

我需要将一些多边形连接到一个区域当我使用 jparepository 插入新数据时，连接列保留为空。如何解决？

Answer 1

需要删除JPA属性中的insertable = false, updatable = false