Question

我完成了nhibernate屏幕演员的夏天，我试图将它转换为流利，只是为了知识。

我有两个班级（非常简单）

public class Customer { ... }
public class PreferredCustomer : Customer { ... }

这些遵循table per sub class策略，因此流畅的映射是这样的：

CustomerMap - 
  //nothing related to PreferredCustomer - the spec says not required
public class PreferredCustomerMap : SubclassMap<PreferredCustomer>
{
    Map(x => x.CustomerSince);
    Map(x => x.OrderDiscountRate);
}

多数民众赞成。我的测试失败了，经过检查，它抱怨sql找不到列customer_id

这是hibernate生成的sql：

SELECT  customer0_.CustomerId as CustomerId1_0_, 
   customer0_.Version as Version1_0_, 
   customer0_.Firstname as Firstname1_0_, 
   customer0_.Lastname as Lastname1_0_, 
   customer0_1_.CustomerSince as Customer2_2_0_, 
   customer0_1_.OrderDiscountRate as OrderDis3_2_0_, 
       //here, customer0_1_.customer_id needs to be CustomerID really.
   case when customer0_1_.Customer_id is not null then 1 when customer0_.CustomerId is not null then 0 end as clazz_0_ 
    FROM [Customer] customer0_ left outer join [PreferredCustomer] customer0_1_ on customer0_.CustomerId=customer0_1_.Customerid 
    WHERE customer0_.Customer_Id=1

它显然只在PreferredCustomer加入表上。无法找到需要做的事情。

有什么想法吗？

编辑：如何读取由流畅生成的xml？这可能是一个好的开始。

Answer 1

您需要在SubclassMaps中调用KeyColumn("CustomerID");。

Fluent Hibernate Mapping hitch - 为子类传递错误的列名

1 个答案: