存储过程的正确NHibernate映射?

更新:这个问题现在解决了,请参阅下面的答案。

我在试图找出编写NHibernate映射文件()的正确方法时遇到了一些问题。hbm.xml文件)对于MSSQL存储过程。

存储过程接受两个参数并返回一个单行结果集,该结果集包含多个具有整数值的列。

我的映射文件如下:

<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"
                   assembly="TestApp.DataAccess"
                   namespace="TestApp.DataAccess.Models">

  <class name="MonthlyInstructionCount" lazy="true">
    <id name="Id" column="Month">
      <generator class="native" />
    </id>

    <property name="Month" />
    <property name="MapRequests" />
    <property name="Instructions" />
    <property name="DrainsLookSee" />
    <property name="DrainsFullCctv" />
    <property name="Soils" />
    <property name="Roots"/>
    <property name="Arb" />

    <loader query-ref="MI_MonthlyInstructionCount"/>
  </class>

  <sql-query name="MI_MonthlyInstructionCount">
    <return class ="MonthlyInstructionCount">
      <return-property name="Month" column="Month" />
      <return-property name="MapRequests" column="MapRequests" />
      <return-property name="Instructions" column="Instructions" />
      <return-property name="DrainsLookSee" column="DrainsLookSee" />
      <return-property name="DrainsFullCctv" column="DrainsFullCctv" />
      <return-property name="Soils" column="Soils" />
      <return-property name="Roots" column="Roots" />
      <return-property name="Arb" column="Arb" />
    </return>
    exec dbo.MI_MonthlyInstructionCount :StartDate :NumberOfMonths
  </sql-query>

</hibernate-mapping>

<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"
                   assembly="TestApp.DataAccess"
                   namespace="TestApp.DataAccess.Models">

  <sql-query name="MI_MonthlyInstructionCount">
    <return class ="MonthlyInstructionCount" />
    exec dbo.MI_MonthlyInstructionCount :StartDate :NumberOfMonths
  </sql-query>

</hibernate-mapping>

两者似乎都不起作用。。。我只得到以下错误:

'TestApp.DataAccess.Sql测试.NHibernateHelper' 引发了异常。

{miu MonthlyInstructionCount}}

非常感谢您的帮助!干杯!