[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" 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 ?   No, I had wrot

[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