On Fri, Aug 13, 2010 at 10:59 AM, Free Ekanayaka <[email protected]> wrote: > Hi, > > |--==> On Fri, 13 Aug 2010 10:39:56 +1200, Robert Collins > <[email protected]> said: > > [...] > > > Storm ReferenceSets don't (currently) permit constraints, so while we > > can write a collection for *all* signatures a person has made, we > > can't tell storm how to calculate the attribute for us. We could layer > > it: > > signatures = ReferenceSet(..) > > @property > > def is_ubuntu_coc_signer(self): > > return bool(signature for signature in self.signatures > > if signature.active and signature > lastcocdate) > > Hum, I might be totally off here, but isn't this somehow addressed by > BoundReferenceSet.find? > > Like: > > �...@property > def is_ubuntu_coc_signer(self): > result = self.signatures.find(active=True, *your_other_constraints) > return bool(result.one())
IFF that *never executes SQL*. (Remember the context here: we want to make things that look cheap (properties) be cheap. -Rob _______________________________________________ Mailing list: https://launchpad.net/~launchpad-dev Post to : [email protected] Unsubscribe : https://launchpad.net/~launchpad-dev More help : https://help.launchpad.net/ListHelp
