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Prev | Chapter 7. GDA Providers |
Usually a provider has oly one header (gda-DBMS.h) which contains all the structures definitions, and the main functions declarations. This header needs to include the gda-server.h header file.
The provider also needs the common elements of the gda-common library (for XML stuff, etc when completed).
Usually there is one .c file for the implementation of the different DBMS structures mentionned above, except for the Gda_ServerField object, which is entirely managed by the gda-server library, and one for the program itself.
You can have a look at the providers distributed with libgda, which make use of this library. It is specially interesting the PostgreSQL provider, since it is a good example of provider customization. It includes some extra features not present in other providers, such as the built-in recordsets, which are used to get data out of the box, not being a value directly returned by PostgreSQL.