Re: Change in datetime type casting

On Thu, Jun 28, 2012 at 3:11 PM, Adrian Klaver <adrian.klaver@gmail.com> wrote:

> Which begs the question why does the adapter not do str(value) when creating
> the ARRAY?

Because it would give a false promise of working. If I put a date in
my db, I'm expecting a date to come out: any other result is an error.
The hstore adapter is documented to take strings mapping: results with
any other mapping is undefined. A better behaviour could be to
explicitly raise an explicit exception, but it would be less efficient
than trusting the user he is using the adapter as documented (see
HstoreAdapter._getquoted_9(): we adapt the dict.values() list, not
iterate on each values).

If writing a date in and reading a string out is enough for your
application, you can easily write your own specialized hstore adapter
based on the code in extras.py.


> Bigger question:) Is it possible to turn adaption off for a
> connection/cursor?

No, I think adaptation is currently only global. No, I don't like this
asymmetry with typecasting either.


-- Daniele