> Okay, I'm a little lazy... I'm posting this question before fully perusing
> the EJB spec.
>
> Between an EJB object model and its database schema sits a map which
> coordinates the correspondence of EJB beans & fields to schema tables &
> columns.
>
> My question is, where should the conversion from java types to and from
> JDBC types occur? Should it happen in the schema or in the map? Does the
> EJB spec decree where the conversion must occur, or where it cannot occur?
>
> It seems to me that the schema should be as close an approximation to the
> actual database structure as possible, and should be based purely upon
> JDBC types. I believe that the *map* is where the conversions should
> occur. That is, in my mind, the map should not be a simple correspondence
> map -- taking fields to columns and back -- it should be smarter than
> that, able to perform the conversions between the java types and the JDBC
> types.
>
> The problem is, my development environment (VisualAge) requires the
> conversions to occur in the schema itself, rather than in the map. This
> causes me much consternation every time I have to reimport a database
> schema and either edit the JDBC field types or put converters in place in
> order to make the schema correspond to my EJB model. Shouldn't the
> converters really be in the map? Or would this violate the EJB spec?
>
> Charles May, Software Engineer
> AFCO Credit Corp. - Pittsburgh Systems Group
> A Mellon Financial Company
>
>
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