[odb-users] polymorphic inheritance, typeid, odb::object_not_persistent

[Boris Kolpackov]

Hi,

MM <finjulhich at gmail.com> writes:

> I get this exception: odb::object_not_persistent
> 
> The intent is to load from the database all the persistent objects  (the
> derived) from the Base table, and assign them a concrete derived instance
> (D1...D10) according to the typeid, and populate the name field
> 
> I don't know if this is expected to work, and what is the correction if
> something is wrong.

Yes, the polymorpism part is expected to work, and from what you have
shown (i.e., no database mapping pragmas -- always a good idea to include),
I don't see anything wrong. Perhaps it is that 'cal' pointer that cannot
be loaded?

Boris