[odb-users] Support more then one database vendor in a single
application?
Boris Kolpackov
boris at codesynthesis.com
Tue Aug 28 08:22:45 EDT 2012
Hi Oded,
Oded Arbel <oded at geek.co.il> writes:
> The way I'm doing this is to have the model implementation hide all
> the queries and expose a business logic API to the rest of the system
> (as it is done in MVC). [...] The model implementation will be packaged
> with the ODB vendor-specific generated code into the vendor-specific
> DLL.
Yes, that will work. In other words, your "model implementation" will
wrap the ODB functionality which will not be exposed from the DLL.
> I've noticed that ODB code has a lot of LIBODB_EXPORT symbols all over
> the place - is thins something I can use to allow VC++ to compile ODB
> code into a DLL?
No, these are used from the libodb runtime DLL.
Note that if you use the above approach, you don't need to export any
ODB-generated code from the DLL. The only thing that you should export
is the business logic API.
Boris
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