[sqlalchemy] Re: Stale ORM Objects Locking Best Practice (for nested sets)

2009-04-01 Thread Michael Bayer
there's a nested set demo in the examples/ folder of the distribution, which uses MapperExtension as well as a little-used flag on the mapper called batch=False. are you building off of that ? as far as multithread/process, the UPDATE statements which nested sets requires would result in a

[sqlalchemy] Re: Stale ORM Objects Locking Best Practice (for nested sets)

2009-04-01 Thread Randy Syring
Michael, Thanks for your reply. On Apr 1, 11:46 am, Michael Bayer mike...@zzzcomputing.com wrote: there's a nested set demo in the examples/ folder of the distribution, which uses MapperExtension as well as a little-used flag on the mapper called batch=False.   are you building off of that ?