Question

如果我有3个相互连接的课程。

房间类

@Entity
@Table(name="table_room")
Class Room{
    @Id
    @GeneratedValue
    @Column(name="id_room")
    private Integer id;

    @Column(name="name")
    private String name;

    @OneToMany(mappedBy="room")
    private List<Person> people;

    @Column(name="deleted")
    private int deleted;
}

人员类

 @Entity
@Table(name="table_person")
Class Person{
    @Id
    @GeneratedValue
    @Column(name="id_person")
    private Integer id;

    @Column(name="name")
    private String name;

    @ManyToOne
    @JoinColumn(name="id_room")
    private Room room;

    @OneToMany(mappedBy="person")
    private List<Phone> phones;

    @Column(name="deleted")
    private int deleted;
}

然后是电话课程

 @Entity
@Table(name="table_phone")
Class Phone{
    @Id
    @GeneratedValue
    @Column(name="id_person")
    private Integer id;

    @Column(name="name")
    private String name;

    @ManyToOne
    @JoinColumn(name="id_person")
    private Person person;

    @Column(name="deleted")
    private int deleted;
}

我想要做的是实现软删除，将已删除项的已删除列插入值1，为现有项插入值0。我也希望级联我的删除，所以如果任何房间被删除，那么与该房间相关的每个人和电话也将被删除（＆＃34;删除＆＃34;列值设置为1）。我的问题是如何在Hibernate上执行此操作？是否有任何优雅的方式来实现这些东西？

Answer 1

使用Hibernate实现软删除的最佳方法是在类上使用@SQLDelete注释。

确保您的映射设置为级联删除

调用session.delete（yourClass）应该实现软删除

Hibernate doc

//used to overide the normal delete behavior
@SQLDelete(sql="UPDATE (table_name) SET deleted = '1' WHERE id = ?")
//optional Use this to exclude deleted element from get 
@Where(clause="deleted <> '1'")
//OR (Filter may also be used if you need to load deleted items occasionally)
@FilterDef(name="ProductFilter",defaultCondition="deleted <> 1 ")

使用更新Cascade进行休眠软删除

1 个答案: