Question

我的问题是，当我从一对多关系中删除一个对象时，子记录变为孤立而不是删除。我不确定它是否是我设置域模型的方式，或者我在自动映射配置期间没有设置任何内容。评估 - ＆gt; ShortlistedMentor Relationship是发生孤立记录的地方。它们出现在ShortlistMentor表和ShortListQuestionResponse中。我期望的是，当我从关系中删除ShortlistMentor时，它会从ShortlistMentor表中删除，并且ShortListQuestionResponse表中的条目也会被删除。

 public class Appraisal : BaseEntity
{
    public Appraisal()
    {
        ShortlistedMentors = new List<ShortlistedMentor>();
        ApprovedMentor =  new User();
        College =  new RefData();
    }

    #region Primitive Properties

    public virtual bool Decision { get; set; }
    public virtual System.DateTime? ApprovedDate { get; set; }
    public virtual System.DateTime? AcceptedDate { get; set; }
    public virtual System.DateTime? CompletionTargetDate { get; set; }
    public virtual string RejectionReason { get; set; }

    public virtual IList<ShortlistedMentor> ShortlistedMentors { get; set; }

    public virtual User ApprovedMentor { get; set; }

    public virtual RefData College { get; set; }

}

 public class ShortlistedMentor : BaseEntity
{
    public virtual User Mentor { get; set; }
    public virtual IList<ShortListQuestionResponse> ShortListQuestionResponses { get; set; }

}

public class ShortListQuestionResponse : BaseEntity
{
    public virtual string Comment { get; set; }
    public virtual int Score { get; set; }
    public virtual RefData Question { get; set; }

}

自动地图设置

.Mappings
(
m => 
m.AutoMappings.Add
(
    AutoMap.AssemblyOf<User>(cfg)
    .Override<Client>(map =>{map.HasManyToMany(x => x.SICCodes).Table("SICRefDataToClient");})
    .IgnoreBase<BaseEntity>()
    .Conventions.Add(new StringColumnLengthConvention(),new EnumConvention(),DefaultCascade.SaveUpdate())
    .Conventions.Add(DefaultLazy.Always())
)

不确定这是否有帮助，但这是我从集合中删除项目并添加新

的方式

 ProjectToUpdate.Appraisal.ShortlistedMentors.Clear();
            foreach (var userId in Request.Form["ProjectToEdit.Appraisal.ShortlistedMentors"].Split(','))
            {
                var user = _membershipService.GetUser(Convert.ToInt16(userId));
                ProjectToUpdate.Appraisal.ShortlistedMentors.Add(new ShortlistedMentor(){Mentor = user,ShortListQuestionResponses = new List<ShortListQuestionResponse>()});

            }

Answer 1

我认为，由于您的DefaultCascade设置为SaveUpdate（），您需要将HasMany关系（ShortlistedMentors）覆盖为Cascade.AllDeleteOrphan。所以它看起来像这样：

.Override<Appraisal>(map =>{map.HasMany(x => x.ShortlistedMentors).Cascade.AllDeleteOrphan();})

我实际上没有编译它，所以它可能不完美。

流利的Nhibernate Automap一对多孤立的记录

1 个答案: