On Nov 12, 2012, at 9:37 PM, Michael Bayer wrote:
>
> On Nov 12, 2012, at 5:33 PM, Torsten Landschoff wrote:
>
>>
>> BTW, I found one offender that breaks running database upgrades with my
>> locking schemes:
>>
>> from sqlalchemy import *
>> from sqlalchemy.pool import *
>>
>> engine = create_engine("sqlite:////home/torsten/some.db",
>> poolclass=AssertionPool)
>> conn = engine.connect()
>> metadata = MetaData(conn, reflect=True)
>>
>> This results in the following backtrace here:
>>
>> raise AssertionError("connection is already checked out" + suffix)
>> AssertionError: connection is already checked out at:
>> File "demo.py", line 5, in <module>
>> conn = engine.connect()
>>
>> I would have expected it to reflect using the connection passed to the
>> MetaData constructor.
>
> if so then that's a bug, added http://www.sqlalchemy.org/trac/ticket/2604 to
> take a look at that.
I've no idea how that silly API got in there, but seems a bit late to remove
it. I'm going to deprecate it though, for now use this form:
m = MetaData()
m.reflect(conn)
>
>
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