Nhibernate在insert上添加了重复列

Question

我正在使用流利的NHibernate。我有一个名为审计的类，它具有ItemID属性。每次我想在那个表中保存任何东西时，请告诉我这个错误。

错误消息:在INSERT的SET子句或列列表中多次指定列名'itemid‘。在同一子句中，不能为列分配多个值。修改子句以确保只更新一次列。如果此语句更新或向视图中插入列，则列别名会隐藏代码中的重复。

类

public class Audit : EntityBase
{
    /*********
    ** Accessors
    *********/
    /// <summary>When the action was logged.</summary>
    public virtual DateTime Date { get; set; }

    /// <summary>The person who triggered the action.</summary>
    public virtual BasicUser User { get; set; }

    /// <summary>The name of the related group, used for filtering (e.g. idea, system-settings, site-editor)</summary>
    public virtual string ItemGroup { get; set; }

    /// <summary>The ID of the related entity.</summary>
    public virtual int ItemID { get; set; }

    /// <summary>The title of the related entity.</summary>
    public virtual LocalizableString ItemTitle { get; set; }

    /*********
    ** Public methods
    *********/
    /// <summary>Construct an instance.</summary>
    public Audit() { }
}

映射：

public class AuditMapper<T> : IEntityMapper<T>
    where T : Audit
{
    public virtual void ExtendDomainModel(IEntityMetadata<T> metadata)
    {
        metadata.MapTablePerClassHierarchy<Audit, T>("`ItemGroup`");

        if (!metadata.IsSubclass)
        {
            metadata.Map.ManyToOne(entity => entity.User, relation => relation.Column("`userid`"));
            metadata.Map.Property(c => c.ItemGroup, mapper =>
                    {
                        mapper.Insert(false);
                        mapper.Update(false);
                    });
            metadata.Map.Property(c => c.ItemID, mapper => mapper.Column("itemid"));
        }
        else
        {
            metadata.MapSubclass.ManyToOne(entity => entity.User, relation => relation.Column("`userid`"));
            metadata.MapSubclass.Property(c => c.ItemGroup, mapper =>
                    {
                        mapper.Insert(false);
                        mapper.Update(false);
                    });
            metadata.MapSubclass.Property(c => c.ItemID, mapper =>
                    {
                        mapper.Insert(false);
                        mapper.Update(false);
                    });
        }
    }
}

SQL查询：

idealink.core.audit值(@p0，@p1，@p2，@p3，@p4，@p5，'IdeaAudit')；选择SCOPE_IDENTITY()

Answer 1

我在地图上解决了这个问题。

我改变了

        metadata.Map.Property(c => c.ItemID, mapper => mapper.Column("itemid"));

至

        metadata.Map.Property(c => c.ItemID, mapper =>
                {
                    mapper.Insert(false);
                    mapper.Update(false);
                });