删除连接表的行级联休眠

  • Z时代
  • 2024-01-10
  • 分类：问答

我想从中间连接表中删除数据。我越来越删除连接表的行级联休眠

更新或删除表“eoclass”违反了表“eostaff_user_eoclass” 细节外键约束“fk_o5mbi65xmqv60x0m5v0l1raf8”：密钥（primary_key）=（51）仍然从表“eostaff_user_eoclass”引用。

这里是我的实体

@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; 
}

回答：

你不能简单地删除EOClass因为Hibernate不会删除连接表的记录。

对于您的映射，您需要加载EOStaffUser，从eoClassArray删除EOclass并合并整个EOStaffUser实体。

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