On Feb 14, 2011, at 11:54 AM, Kent wrote: > Is there a mechanism for converting all lazy=False relationships for a > particular Query into subqueryloads? > > In general, I want these lazy=False, but for the case of FOR UPDATE > and Oracle 8, the three aren't compatible. > > (I suspect not since I couldn't find documentation for it.) > > If not, suppose I have a subclassed "MyQuery". Would finding and > converting these via a query method be fairly straightforward? (I > suspect these may not be resolved until later) Can you suggest a > better approach?
really looking forward to the day you don't need to support oracle 8 anymore.... Normally I leave the eagerload stuff to query time as query options. So there's not much challenge there, just use a function that returns subqueryload() instead of joinedload() based on the engine (are you using FOR UPDATE in so many places ? doesn't all that locking kill your app in any case ?). The other would be to traverse all the relationships using mapper.iterate_properties(), find all the "lazy" flags and generate subqueryload() options for them. That is straightforward but would require the thinking cap/read-the-source-cap to get all the way through it. -- 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 sqlalchemy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en.
