NHibernate一对多的问题

Question

我有一个与VesselDetail对象具有一对多关系的Vessel对象.当我将VesselDetail对象添加到Vessel对象并尝试保存Vessel对象时,似乎NHibernate在插入VesselDetail对象时不添加外键.

我在哪里错了？我只是想不出来.

错误消息:BDN.FindVessel.Tests.Integration.NhibernateRepositoryTests.SaveVessel_ShouldAddDetailsToDb_WhenAddedToEntity:NHibernate.Exceptions.GenericADOException:无法插入:[BDN.FindVessel.Domain.VesselDetail] [SQL:INSERT INTO BoatsDetails(SaftyGear,OtherMachineryAndGear,Material,Size,Various ,TranslatorId,SpeenAndConsumption,MainMachinery,Created,Class,Capasities,Culture,Interior,Electronics,DeckGear)VALUES(？,？,？,？,？,？,？,？,？,？,？,？,？,？ ,？); select SCOPE_IDENTITY()] ----> System.Data.SqlClient.SqlException:无法将值NULL插入列'BoatId',表'FindVesselTest.dbo.BoatsDetails'; 列不允许空值.INSERT失败.该语句已终止.

public class Vessel
{
        public virtual int BoatId { get; set; }
        public virtual IList<VesselDetail> Details { get; set; }
        //...
}

public class VesselDetail
{
        public virtual int VesselDetailId { get; set; }
        //some other properties
        //..
}

public class VesselMap: ClassMap<Vessel>
{
    public VesselMap()
    {
        WithTable("Boats");

        Id(x => x.BoatId, "Id");

        //..

        HasMany(x => x.Details)
            .WithKeyColumn("BoatId") //foreign key in the BoatsDetails table
            .Cascade.All();
    }
}

public class VesselDetailMap:ClassMap<VesselDetail>
{
  public VesselDetailMap()
  {
      WithTable("BoatsDetails");

      Id(x => x.VesselDetailId, "Id");

      //...
  }
}

Answer 1

我似乎缺少一些基本的NHibernate技能.稍微阅读一下,似乎你需要让子对象负责一对多的关系.

这解决了我的问题:

public class VesselMap: ClassMap<Vessel>
{
    public VesselMap()
    {
        //...

        HasMany(x => x.Details)
                .Inverse()
                .WithKeyColumn("BoatId");
    }
}

public class VesselDetailMap:ClassMap<VesselDetail>
{
  public VesselDetailMap()
  {
      //..

       References(x => x.Vessel, "BoatId")
                .Cascade
                .SaveUpdate();
  }
}