Oleg Broytmann wrote:
> On Thu, Jul 30, 2009 at 09:09:25AM -0400, Stef Telford wrote:
>
>> My hack currently consists of ripping out
>> the Decimal stuff mostly from col.py as well as the two line change
>> inside psycopg2 .. and that's where I think we may have a problem. The
>> Psycopg2 guys are probably -not- interested in changing over from
>> Decimal to gmpy, even for speed. Which makes me wonder.. should I
>> maintain these patches for myself ?
>>
>> Let me re-ask that question; is there any point in submitting patches
>> to use gmpy to you if to get things working requires a patched psycopg2
>>
>
> Can the patching be done on the fly (monkey-patching)? Even better - is
> there an adapter that can be unregister and reregister to gmpy? This way
> you can have a configuration flag for SQLObject that replaces Decimal with
> gmpy; SQLObject with this configuration flag reregisters the adaptor for
> you.
>
> Oleg.
>
Hello again Oleg,
So, the specific changes in psycopg2 come down to;
cmp...@test:~/psycopg2-2.0.11$ diff ./psycopg/psycopgmodule.c
../psycopg2-2.0.11-new/psycopg/psycopgmodule.c
595c595
< decimal = PyImport_ImportModule("decimal");
---
> decimal = PyImport_ImportModule("gmpy");
597c597
< decimalType = PyObject_GetAttrString(decimal, "Decimal");
---
> decimalType = PyObject_GetAttrString(decimal, "mpq");
Kind of a 'no-brainer' there but, since psycopg is a compiled
extension, I don't see how we can monkey patch the C lib :( I -can-
fling across my kludges off list for col.py and converters.py if you want ?
Lastly, I have also hacked my version of SQLObject to disable the
local cache, so that SO can use memcache (by subclassing the sqlobject
and then making custom get/setattr methods). It would be nice if there
was a way to toggle the cache on/off at the SO level (if there is, I
haven't found it sadly).
Regards
Stef
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