删除联接表行级联休眠

Question

我想从中间联接表中删除数据。 我正进入（状态

对表“ eoclass”进行更新或删除违反了表“ eostaff_user_eoclass”上的外键约束“ fk_o5mbi65xmqv60x0m5v0l1raf8”。详情：密钥（primary_key）=（51）仍从表“ eostaff_user_eoclass”中引用。

这是我的实体

@Entity
@Table(name = "EOSTAFF_USER")
@SequenceGenerator(name = "EOSTAFF_USER_SEQ", initialValue = 1, allocationSize = 1, sequenceName = "EOSTAFF_USER_SEQ")
public class EOStaffUser extends EOObject {

    @Id
    @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "EOSTAFF_USER_SEQ")
    @Column(name = "PRIMARY_KEY")
    public long primaryKey;

    @ManyToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY)
    public List<EOClass> eoClassArray = new LinkedList<>();
}

和

@Entity
@Table(name = "EOCLASS", uniqueConstraints = @UniqueConstraint(columnNames = { "eoinstitute_primary_key",
    "lkclass_primary_key", "lksection_primary_key", "lksubject_primary_key" }) )

@SequenceGenerator(name = "EOCLASS_SEQ", initialValue = 1, allocationSize = 1, sequenceName = "EOCLASS_SEQ")

public class EOClass extends EOObject {

    @Id
    @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "EOCLASS_SEQ")
    @Column(name = "PRIMARY_KEY")
    public long primaryKey;
 }

Answer 1

您不能简单地删除EOClass因为Hibernate不会从EOClass表中删除记录。

为了您的映射，你需要加载EOStaffUser ，删除EOclass从eoClassArray和合并整个EOStaffUser实体。