如何使tablePerHierarchy为false并使用鉴别器？ [英] how to make tablePerHierarchy false and use discriminator?

问题描述

此处提供像我需要的问题但它的回答并不满足我所需要的。我有这样的课程：


pre $ 抽象类A {
字符串a
}
class B extends A {
String b
}
class C extends A {
String c
}


我想为每个类都有一个表，所以我添加tablePerHierarchy并将其设置为如下所示：

 抽象类A {
字符串a 
静态映射= {
 tablePerHierarchy false 
} 
} 
  

但是当我运行程序并创建一个数据库时没有鉴别器，我想查询表A并找到如果它是B，或C？我怎样才能在这个策略中添加鉴别器？ 错误报告。

A question like what I need is asked here but it's answer is not satisfying what I need. I have classes like this :

abstract class A{
   String a
}
class B extends A{
   String b
}
class C extends A{
   String c
}

I want to have a table for each class, so I add tablePerHierarchy and set it false like this:

abstract class A{
   String a
   static mapping = {
       tablePerHierarchy false
   }
}

but when I run the program and it creates a database there are no discriminator, and I want to query table A and find out if it is B, or C? How Could I add discriminator to this strategy?

解决方案

It is not supported based on the bug report.

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