Question

我正在尝试使用NHibernate映射Northwind Employee实体：

public class Employee
{
    public virtual int ObjectID { get; set; }
    public virtual string LastName { get; set; }
    public virtual string FirstName { get; set; }
    public virtual string Title { get; set; }
    public virtual string TitleOfCourtesy { get; set; }
    public virtual DateTime HireDate { get; set; }
    public virtual DateTime BirthDate { get; set; }
    public virtual string Address { get; set; }
    public virtual string City { get; set; }
    public virtual string Region { get; set; }
    public virtual string PostalCode { get; set; }
    public virtual string Country { get; set; }
    public virtual string HomePhone { get; set; }
    public virtual string Extension { get; set; }
    public virtual byte[] Photo { get; set; }
    public virtual string Notes { get; set; }
    public virtual string PhotoPath { get; set; }

    public virtual ISet<Employee> Subordinates { get; set; }
    public virtual Employee ReportsTo { get; set; }
}

映射：

<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"
auto-import="true" namespace="NHibernateTests.Data" assembly="NHibernateTests">
  <class name="Employee" lazy="false" entity-name="Employees">
    <id name="ObjectID" access="property" column="EmployeeID" >
      <generator class="native" />
    </id>
    <property name="LastName" access="property" column="LastName"/>
    <property name="FirstName" access="property" column="FirstName"/>
    <property name="Title" access="property" column="Title"/>
    <property name="TitleOfCourtesy" access="property" column="TitleOfCourtesy"/>
    <property name="BirthDate" access="property" column="BirthDate"/>
    <property name="HireDate" access="property" column="HireDate"/>
    <property name="Address" access="property" column="Address"/>
    <property name="City" access="property" column="City"/>
    <property name="Region" access="property" column="Region"/>
    <property name="PostalCode" access="property" column="PostalCode"/>
    <property name="Country" access="property" column="Country"/>
    <property name="HomePhone" access="property" column="HomePhone"/>
    <property name="Extension" access="property" column="Extension"/>
    <property name="Photo" access="property" column="Photo"/>
    <property name="Notes" access="property" column="Country"/>
    <property name="PhotoPath" access="property" column="PhotoPath"/>

    <set name="Subordinates" table="Employees" access="property" lazy="false" inverse="true">
      <key column="ReportsTo"/>
      <one-to-many class="Employee" />
    </set>

    <many-to-one name="ReportsTo" column="ReportsTo" access="property" not-null="false"/>
  </class>
</hibernate-mapping>

我不断获得“关联引用未映射类：NHibernateTests.Data.Employee”MappingException。它适用于自我关联部分（Subordinates和ReportsTo）注释掉。

我的地图有什么问题？

Answer 1

有时，当我们没有为特定HBM文件设置属性时会发生上述错误。因此，请转到hbm文件属性并选择

BuildAction = EmbeddedResource

我已经使用Nhibernate环境测试了这个场景，wpf。

Answer 2

愚蠢错误：使用 entity-name 而不是 table 属性。

Answer 3

我得到了同样的错误导致了大量的头部刮伤。所以我只想添加我的解决方案以防其他人有同样的问题...

我在关系中引用的实体是abstract，这是一个愚蠢的复制/粘贴拼写错误的结果。一旦我把abstract拿出来就执行得很好。

关联引用未映射的类异常

3 个答案: