On Apr 6, 2006, at 3:41 PM, dmiller wrote:
Does this mean I don't need to use mapper.using(...).select(...) to
execute a query on a session anymore? i.e. I could do mapper.select
(session=x, ...)
oh...well, I actually just committed "the big change", since after
looking at the problem I could see numerous advantages to the Query
object you proposed, including that the whole concept of "selecting"
could be moved from the mapper module into its own module, since its
a different kind of "lifting" than what the rest of Mapper does, and
also the using() function is now a nice reasonable method that
returns a new Query with the given session stored inside of it.
so I took the "session" keyword argument out for this revision....we
can put it in but the thing I dont like about it is that most of the
"query" methods dont have the room for arbitrary keyword arguments,
such as select_by, get_by, count_by, select_statement, where the
keyword arguments are either used to build the criterion or to
specify the bind parameter values for a given statement....so it
would be not quickly apparent to users which methods could take
"session" and which could not.
although this time around you can do what I think maybe you wanted,
which is just make your own Query objects with whatever session, i.e.
q = Query(mapper, session=sess)
and youre off. we are not yet doing anything with the SQLEngines or
connections being different, thats next.
take a look at sqlalchemy.mapping.query and youll see what I mean.
this should be a generally more accessible place for people who want
to screw around with how the mapper selects objects.
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