Nhibernate 3.x级联-正在进行更新

我有以下映射，但当我删除状态实体时，Nhibernate会对子对象执行更新，而不是删除

public StatusMap()
{
    Property(x => x.Date);
    Property(x => x.Text, map => map.Type(NHibernateUtil.StringClob));
    Property(x => x.Type);         
    ManyToOne(x => x.User, map => map.Column("UserId"));            
    Bag(x => x.Comments, map => { map.Key(km => km.Column("StatusId")); }, action => action.OneToMany());

    Bag(x => x.Likes, map => { map.Key(km => km.Column("StatusId"));  map.Cascade(Cascade.DeleteOrphans);  }, action => action.OneToMany());
}


public StatusLikeMap()
{
    ManyToOne(x => x.User, map => map.Column("UserId"));
    ManyToOne(x => x.Status, map => { map.Column("StatusId");  });
    Property(x => x.Date);
}

删除（状态）将导致以下SQL：

UPDATE
    CommentStatus 
SET
    StatusId = null 
WHERE
    StatusId = @p0;
@p0 = ce350d55-e476-4874-9e95-341cad9342e2 [Type: Guid (0)]


UPDATE
    StatusLike 
SET
    StatusId = null 
WHERE
    StatusId = @p0;
@p0 = ce350d55-e476-4874-9e95-341cad9342e2 [Type: Guid (0)]


DELETE 
FROM
    Status 
WHERE
    Id = @p0;
@p0 = ce350d55-e476-4874-9e95-341cad9342e2 [Type: Guid (0)]

有什么想法吗？？请帮帮我

编辑： 我做了下面的更改，排除工作正常，但这样，触发delete命令的是数据库

如何使nhibernate执行删除而不是数据库

Bag(p => p.Likes, map =>
{
   map.Key(k =>
   {
      k.Column("StatusId");
      k.OnDelete(OnDeleteAction.Cascade);
    });
    map.Cascade(Cascade.DeleteOrphans);
    map.Inverse(true);
 }, ce => ce.OneToMany());

---

Cascade.deleteOlivers只表示删除孤立项。这并不意味着当父对象被删除时，子对象也会被删除

您还需要级联“删除”或“全部”：

---

Cascade.deleteOlivers只表示删除孤立项。这并不意味着当父对象被删除时，子对象也会被删除

您还需要级联“删除”或“全部”：

map.Cascade(Cascade.All | Cascade.DeleteOrphans)