[snip] >http://twistedmatrix.com/trac/ticket/3956 >Add arraysize option to runQuery in adbapi > > - The "arraysize" property is the only writable cursor property defined > by DBAPI2. Setting it can make the .fetchall() method faster with > some DB modules, but Twisted's adbapi module offers no way to set it. > - This ticket has a patch that adds an "cp_arraysize" keyword argument > to ConnectionPool.runQuery() to set the .arraysize property, but this > could interfere with DB modules that accept a "cp_arraysize" keyword > parameter to cursor.execute(). > - I looked up the API docs for as many Python DB modules as I could > think of, and none of them attach any significance to > a "cp_arraysize" keyword parameter. > - However, at least cx_Oracle supports using keyword parameters for > populating parameterised queries, like this: > > cursor.execute("select :name from dual;", name="Fred") > >So, my questions to the Twisted community are: > - How many of you are using adbapi.ConnectionPool with cx_Oracle, or > another DB module that supports arbitrary keyword arguments to > cursor.execute? > - Of those, how many of you are using parameterised queries or prepared > statements with placeholders named "arraysize" or "cp_arraysize"? >
Well, as the guy who initiated this ticket, I'm certainly using adbapi.ConnectionPool with cx_Oracle. I'm not currently using any placeholders named "arraysize" or "cp_arraysize". This kind of informal poll *might* help us "rule out" using these (if someone says they're currently using them) - but it won't be very definitive; and this change will still technically be backwards-incompatible. Perhaps the only reasonable backwards-compatible change that could be made would be adding either an attribute or method to the ConnectionPool to set the arraysize. Gerrat _______________________________________________ Twisted-Python mailing list Twisted-Python@twistedmatrix.com http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python
