I can add to this that the issue occurs only on consequent appends. Here's the excerpt that leads to the IntegrityError, demonstrating this.
>>> collection = Collection() >>> session.save(collection) >>> session.flush() >>> vinyl = Vinyl() >>> colletion.records.append(vinyl) >>> session.flush() >>> vinyl = Vinyl() >>> colletion.records.append(vinyl) >>> session.flush() The last two flushes are based on the following units-of-work: First append and flush: (Pdb) pp self.tasks.values() [UOWTask(0x27a5f90) Mapper: 'Mapper/Join object on soup(40067600) and __builtin__:ICollection(41259088)', UOWTask(0x27a5ff0) Mapper: 'Mapper/Join object on Join object on soup(40067600) and __builtin__:IAlbum(40262960)(41171024) and __builtin__:IVinyl(41171728)', UOWTask(0x27a5fd0) Mapper: 'Relation/relation'] Second append and flush: (Pdb) pp self.tasks.values() [UOWTask(0x2799fd0) Mapper: 'Mapper/Join object on Join object on soup(40067600) and __builtin__:IAlbum(40262960)(41171024) and __builtin__:IVinyl(41171728)', UOWTask(0x27993b0) Mapper: 'Relation/relation'] For some reason, on the first append, there's a "save" task defined on the collection-object; I'm not sure what this means, since it should already be saved and flushed at this point. \malthe --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
