Thanks very much Mike. On Monday, March 23, 2015 at 12:40:46 PM UTC-4, Michael Bayer wrote: > > > > Kent <jkent...@gmail.com <javascript:>> wrote: > > > In cases where we interact with the database session (a particular > Connection) to, for example, obtain an application lock which is checked > out from database for the lifetime of the database session (not just the > duration of a transaction), it is important that I guarantee future scoped > session instances get the same connection (and, for example, the > pool_recycle or something else has thrown out that connection and grabbed a > new one). > > > > Please advise me where I can best implement this guarantee. A Session > subclass's connection() method seems it might be the appropriate place, but > let me know if there is a better recipe. > > you’d want to create that Session associated with the Connection directly: > > my_session = scoped_session(bind=some_connection) > > then of course make sure you .close() it and .close() the connection at > the end of the use of that session. > > > > > > > The Session.connection() method's docs say: > > "If this Session is configured with autocommit=False, either the > Connection corresponding to the current transaction is returned, or if no > transaction is in progress, a new one is begun and the Connection returned > (note that no transactional state is established with the DBAPI until the > first SQL statement is emitted)." > > > > If the session is one registered in my scoped registry, I'd like to > always return the same connection to guarantee I am using the one with the > database-side checked-out application lock. > > > > What's my best option? > > > > Thanks much! > > > > -- > > You received this message because you are subscribed to the Google > Groups "sqlalchemy" group. > > To unsubscribe from this group and stop receiving emails from it, send > an email to sqlalchemy+...@googlegroups.com <javascript:>. > > To post to this group, send email to sqlal...@googlegroups.com > <javascript:>. > > Visit this group at http://groups.google.com/group/sqlalchemy. > > For more options, visit https://groups.google.com/d/optout. >
-- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sqlalchemy+unsubscr...@googlegroups.com. To post to this group, send email to sqlalchemy@googlegroups.com. Visit this group at http://groups.google.com/group/sqlalchemy. For more options, visit https://groups.google.com/d/optout.
