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