[odb-users] Pimpl + Relations

[cetoni GmbH - Uwe Kindler]

Hi,

I implemented two database classes following the pimpl idiom and the ODB 
pimpl example using virtual data members. You can see one class here:

http://codeviewer.org/view/code:2a32

Now I need to implement a To-One relation for this CLensMeasurement 
Class. At the moment, the CLensMeasurement class has a data member 
m_Lens (shared pointer) to create this relation. I would like to know, 
if it is possible to move this member into the private implemantation 
class LensMeasurmentPrivate and to use virtual member functions instead 
of the real data member.

I already tried this (see line 74 of code snippet). But this did not 
work - ODB compiler tells me: invalid name in db pragma member. So my 
question is - ist ist possible to build releations with virtual data 
members or does a relations always need a real data member.

Thank you and kind regards,

Uwe