On May 15, 2008, at 12:12 PM, J. Cliff Dyer wrote:
> > > How can I use this field for polymorphism? Is it possible? polymorphic discriminators are currently table-local scalar columns. So if you had a many-to-one of discriminators, youd currently have to encode the discriminator to the primary key identifier of each discriminotor. We will eventually allow a python function to be used as a discriminator as well which you can use to add a level of abstraction to this (you'd preload the list of discriminiator objects and again map based on primary key). But a straight load of an entity relying upon an inline JOIN to get the polymorphic discriminator in all cases, automatically by SA, is not going to happen - its inefficient and would be very complex to implement. --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
