如何在 Grails Gorm 中查询 3 个表

Question

我是 grails 框架的新手，如何查询它们之间有关联的 3 个表

    Class A{
    static hasMany = [b:B]
    }

    enter code here

    class B{
    long aId // Id of table A 
    }

    class c{
    B b //B reference
    }

SQL query: select * from C where b_id in (select id from B where a_id='10'_)

Any help will be appreciated.

Answer 1

直截了当

def list = C.withCriteria{
  b{
    eq 'aId', '10'
  }
}