[odb-users] mapping complex, templatized value types

[Christian Sell]

Hello,
 
I am trying to map custom value types using the value_traits approach mentioned
in the manual and exemplified in the mapping example from odb-examples. I can
succefully map a simple type like:

class Data {
string something;
}

but I am failing to map complex templatized types like:
::std::shared_ptr< ::FlexisBase::SimplePropertyImp< ::std::basic_string< char >,
::FlexisBase::NoValidation< ::std::basic_string< char >, 2 >, 2 > >

I have defined value_traits for both types, and as I said, the first type is
picked up correctly. The second already fails in the

#pragma db value(X) type("VARCHAR")

line.

Question: what restrictions exist with regard to the types that can be mapped
using this approach? What can I do to map the second type?

thanks,
 
Christian