On Oct 26, 2012, at 4:29 AM, Julien Danjou <[email protected]> wrote:
> On Thu, Oct 25 2012, Doug Hellmann wrote: > >>> IIUC, what's need here is a GROUP BY operator in the API. >>> >>> Correct me if I'm wrong, but this is still doable via the API if you >>> request /users/<user>/meters/instance and treats the events in the >>> client, no? >> >> It is possible, but very very inefficient. > > Oh, sure it is. But adding feature and making things more efficient are > different things. :) > >> Querying against arbitrary metadata fields is easy in the MongoDB driver, >> but not in the SQLAlchemy driver. Adding explicit handling for dimensions >> would let us implement it in SQL and improve performance with indexes in >> Mongo. > > Ah, thanks to remind me how ORM are bad and that we now have to fight > against it. :) > > I wish we could use JSON native type from PostgreSQL directly and be > efficient! You could write a different storage driver. ;) Doug > > -- > Julien Danjou > # Free Software hacker & freelance > # http://julien.danjou.info _______________________________________________ Mailing list: https://launchpad.net/~openstack Post to : [email protected] Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp
