小编Pet*_*Pan的帖子

我有两个实体，父项（项目）具有历史实体列表，当我从子列表（历史记录）中删除旧行时，item.getHistories().remove(0)我希望 Hibernate 对子行执行删除操作，但 Hibernate 会更新外部行关键null。此更新会导致NOT NULL VIOLATION，因此外键具有NOT NULL约束。

这是我的父实体：

@Data
@EqualsAndHashCode(callSuper = true)
@Entity
@Table(name = "item", schema = "public", catalog = "foo")
public class RepricingItem extends BaseDatesEntity {

    @Id
    @SequenceGenerator(name="item_id_seq", sequenceName = "item_id_seq", allocationSize = 5)
    @GeneratedValue(strategy = SEQUENCE, generator = "item_id_seq")
    @Column(name = "id", unique = true, insertable = true, updatable = false, nullable = false)
    protected Long id;

    @Size(min = 1, max = 100)
    @Column(name = "title", …