On May 19, 3:35 pm, Michael Bayer <[EMAIL PROTECTED]> wrote: > if youre looking to work at the statement interception level, we do > have an API for that, called ProxyConnection, available in 0.5 under > lib/sqlalchemy/interfaces.py. It seems like this would be required > since you'd like to make decisions based on direct SQL execution. >
Thanks, I'll check that out. > not sure how you'd do things like "only write tables out every 10 > minutes" riding underneath the ORM session though, if you mean to be > intercepting its attempts to write rows and then delay that. That > sounds like something that would ride on *top* of the ORM. > Yeah, can do it on top, but for various reasons I was hoping there was some sort of interface that would let me interpose code before inserts were executed and then I could grab the insert and queue it for later rather than have it execute now. Sounds like the ProxyConnection may let me do this. > On May 19, 2008, at 2:15 PM, TP wrote: > > > > > Hi, we have a DB app that uses SQLAlchemy and we'd like to add some > > custom DB caching logic. Unfortunately, there are no simple choke > > points that everything flows through where we could add this caching > > other than SQLAlchemy. > > > We'd like to do things such as say "invalidate the cache if tables X, > > Y and Z are updated / inserted" or "batch inserts to tables X and Y > > and only write them out every 10 minutes". > > > I noticed that Sessions have an interface for SessionExtensions that > > would let me look at pending instances associated with the session at > > commit time. However, it looks like this would only capture updates > > made through the ORM APIs? Unfortunately we have people doing > > (relatively simple) direct SQL execution through Session.execute() as > > well. > > > Any ideas other than rewrite everything that uses a proper API above > > SQLAlchemy to do the caching? --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to sqlalchemy@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en -~----------~----~----~----~------~----~------~--~---
