This is what you want: http://www.youtube.com/watch?v=ofhEyDBpngM I also waiting for it!
2010/12/23 ss.require <ss.requ...@gmail.com> > But I can't figure out what index(any other mechanism) GAE uses for > query with only one ancestor filter? I want to know what is efficient > for one-many relationship: store a reference to an opposite object as > a simple reference property(Key object) or store one in the primary > key as the parent key? > > On 23 Грд, 16:30, "ss.require" <ss.requ...@gmail.com> wrote: > > I've already found the answer by myself. The answer is here: > http://www.google.com/intl/uk-UA/events/io/2009/sessions/BuildingScal.... > > Just few words. For queries with multiple equality filters GAE uses > > merge-join. GAE scans single indexes for every equality filter in the > > query and merge results. For more details you can see very helpful > > video by the link above. > > > > On 19 Грд, 17:53, "ss.require" <ss.requ...@gmail.com> wrote: > > > > > > > > > Documentation says: > > > > > App Engine provides automatic indexes for the following forms of > > > queries: queries using only equality and ancestor filters > > > > > For implementation of this feature GAE uses single-property indexes or > > > composite indexex or something else? If composite indexexes then how > > > many indexes are used (for example: all possible permutations for > > > properties)? > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine for Java" group. > To post to this group, send email to > google-appengine-j...@googlegroups.com. > To unsubscribe from this group, send email to > google-appengine-java+unsubscr...@googlegroups.com<google-appengine-java%2bunsubscr...@googlegroups.com> > . > For more options, visit this group at > http://groups.google.com/group/google-appengine-java?hl=en. > > -- Guit: Elegant, beautiful, modular and *production ready* gwt applications. http://code.google.com/p/guit/ -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
