代码优先 - 如何在TPH继承中指定鉴别器列 [英] Code First - How to specify discriminator column(s) in TPH inheritance

问题描述

我首先使用代码（CTP 3）创建TPH继承来创建我的edmx。以下代码是我的情况的简化示例：

I am to do TPH inheritance using code first (CTP 3) to create my edmx. The following code is a simplified sample of my situation:

推荐答案

验证失败，因为属性Student.Age和Teacher.Age映射到同一商店 - 侧栏"年龄"。如果你给学生的年龄和教师的年龄一个不同的列名，那么验证就会通过。

Validation fails because the properties Student.Age and Teacher.Age are mapped to the same store-side column "Age." If you gave the student's age and teacher's age a different column name, then validation would pass.

我感兴趣的是你为什么要将Age映射到单独的类而不是把它放在基类中。这是对你的情景的过度简化吗？

I am interested why you are mapping Age to separate classes instead of putting it in the base class though. Is this an oversimplification of your scenario?

David

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