[DB-SIG] RE: column type casting
Fri, 23 Mar 2001 16:39:35 +0100
brian zimmer wrote:
> What's the API like for your datahandlers? Are they written in C or Python? Should we collect a couple examples and present them
> in the PEP?
> In addition to being able to handle different data types, the functionality might want to include events/callbacks for the lifecycle
> of the executions. As I stated, this is useful for collecting the auto increment values for certain columns and isn't so much the
> morphing of data.
There seem to be a few things common to all implementations:
* settings are inherited from connection to cursor objects, but
can be overridden on the cursor
* argument callback assignment is done in a positional way, meaning
that each argument can be handled individually
* type mappings map cursor.description type codes to converters
Perhaps we could agree on a common standard for these DB API
extensions and then add them as special DB API extension guideline
to the spec ?!
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