如何将对象转换为TRttiType

Question

I'm working with an ORM (Aurelius), and need to cast a object as TRttiType.

The TRttiType was obtained from TRtticontext.FindType.

ISptModel = interface(IInterface)
  ['{688431B1-2895-4FE2-AD18-8A7892289956}']
end;

TCidade = class(TInterfacedObject, ISptModel)
end;

var
  FObjectInstance: ISptModel;

LType := LContext.FindType('Spt.Cidade.Model.TCidade');

Manager.SaveOrUpdate(LType(FObjectInstance)); // I need something like this, but doesnt work
Manager.SaveOrUpdate(TCidade(FObjectInstance)); // This works

It has to be cast as TCidade so Aurelius can persist the object correctly.

Answer 1

You cannot use LType like you want to.

You probably just need to cast the interface as a TObject like so:

Manager.SaveOrUpdate(FObjectInstance as TObject);