When I was at DEC, Gordon Bell, VP, of engineering, published a document
defining various levels of compatability. It went some like this:
Virtually compatible == not compatible
Culturally compatible == not compatible
Almost compatible == not compatible
There were more, but you get the picture.
Deep down in DEC culture was that if a customer had to rewrite an application
due to a software upgrade, he could just as easily rewrite it for a
competitor's hardware.
If you need to extend the interface, extend it compatably. If you need to
change it, change it to an accepted industry standard. There really isn't any
middle ground.
Layering a proper JDBC interface isn't hard -- and you have an existance proof
with Vulcan. The hard part is the plethera of JDBC/ODBC system result sets.
But you have working code for those, too.
> On Jul 25, 2014, at 2:37 PM, Dmitry Yemanov <[email protected]> wrote:
>
> 25.07.2014 18:43, Jim Starkey wrote:
>
>> If an interface is incompatible, existing applications have to be recoded.
>> If they need to be recoded, there isn't any real purpose to retaining an
>> interface "style."
>
> At the moment the new API and the legacy one are mostly compatible,
> actually the legacy API is now a thin wrapper over the new API. The
> major difference is that we introduced an explicit Cursor/ResultSet
> interface and it somewhat changed the legacy named cursor semantics
> (which is fixable, I believe, we just need to find the best solution).
>
>
> Dmitry
>
>
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