c# – nHibernate,将两个属性映射到同一个类

我有一个Mailclass,我想将发件人和收件人都保存为User类的引用;

public class dbMail : Entity
{
    public virtual int ThreadID { get; set; }
    public virtual dbUser From { get; set; }
    public virtual dbUser To { get; set; }
    public virtual DateTime MailDate { get; set; }
    public virtual string MailText { get; set; }
    public virtual bool IsRead { get; set; }
}

和映射：
    

<id name="ID">
  <generator class="identity" />
</id>
<property name="ThreadID" />

<many-to-one name="From" class="dbUser" column="From"/>
<many-to-one name="To" class="dbUser" column="To"/>
<property name="MailDate" />
<property name="MailText" type="StringClob">
  <column name="MailText" sql-type="text" />
</property>
<property name="IsRead" />

但是,尝试更新数据库时,会发生此错误：

Duplicate property mapping of dbUser found in Domain.Model.dbMail

解决方法

我有相同的映射情况,它的工作原理.唯一的区别是：

<many-to-one cascade="all" ...

尝试此解决方案,但如果这不起作用,您必须显示更新代码和/或dbUser代码和映射以供进一步调查.