Could you add an int property that is updated with the len ? So you only check this property ?
On 21 juin, 17:51, johntray <john.tur...@gmail.com> wrote: > If I have two datastore object types, I'll call A and B, and A > includes a ReferenceProperty to B, then objects of type B will have a > back-reference property with default name a_set. Now if I just want > the size of some B object's a_set, I could call len(a_set). To execute > this, my understanding is that GAE will do a datastore query to > retrieve the relevant A objects and pass them to the len() function. > Since I don't need the A object contents, would it be more efficient > to set up my own Query object and call Query.count() instead? --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appengine@googlegroups.com To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~----------~----~----~----~------~----~------~--~---
