On 10.12.2008 20:36 Uhr, Michael Bayer wrote:
>
> On Dec 10, 2008, at 2:27 PM, Andreas Jung wrote:
>
>> Hi there,
>>
>> is there some more efficient way for dictifying a resultset other than
>>
>> lst = list()
>> for row in session.query(...).all():
>>
>> d = self.__dict__.copy()
>> for k in d.keys():
>> if k.startswith('_sa'):
>> del d[k]
>>
>> lst.append(d)
>>
>> Especially the loop of the keys takes pretty long for large result
>> sets
>> and tables with lots of columns.
>
> the most efficient way would be to use a ResultProxy instead of the
> ORM and to call dict() on each row. Otherwise a more succinct way
> of what you're doing there, not necessarily much faster, might be
>
>
> list = [
> dict((k, v) for k, v in obj.__dict__.iteritems() if not
> k.startswith('_sa'))
> for obj in session.query.all()
>
Does SA contain some official API to introspect the list of defined
synonyms for a particular class? The goal is to take values defined as a
synonym also into account for the dictification (for backward
compatiblity reasons for an existing codebase).
Andreas
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