Yes it is and I can search using property=None but my question was more about what is more efficient, filter with property=None or use a value like '-1' and filter property='-1'
Thanks for the replies On Feb 24, 9:23 pm, "Ikai L (Google)" <[email protected]> wrote: > I believe so. What have you observed when saving your models? > > On Wed, Feb 24, 2010 at 12:55 PM, Jairo Vasquez > <[email protected]>wrote: > > > > > > > Thanks Ikai, > > > But what is the difference between empty values and None when you > > define a Model in GAE? Because you just define a property without a > > default value and when you create an instance of that entity, the > > value will be None isn't it? > > > On Feb 24, 1:36 pm, "Ikai L (Google)" <[email protected]> wrote: > > > That *should* create an index. We index null values, but we don't index > > > empty values. That is, if you have an entity: > > > > Animal { > > > String name; > > > int age; > > > > } > > > > And create 100 entities, then add: > > > > Animal { > > > String name; > > > int age; > > > String nickname; > > > > } > > > > The 100 entities that were created will have an EMPTY nickname and will > > not > > > be queryable by this attribute, but Animals created after the change that > > > populate this field will be indexable. > > > > On Tue, Feb 23, 2010 at 9:58 PM, Jairo Vasquez Moreno < > > > > [email protected]> wrote: > > > > Hi Nick, > > > > > I know every write to Datastore creates an index entry for each > > indexable > > > > value. But when a value is not set (None) will an index entry be > > created? > > > > > My doubt is, is it better to let a property None and then filter by > > > > property=None or set the with something e.g property="-1" and then > > filter by > > > > property="-1". Because I'm leaving a property as None and then doing > > some > > > > stuff with those entity with None but this is generating more > > > > DeadLineExcedeed errors as expected (even decreasing the number of > > entities > > > > to fetch) so I think maybe the filter is getting to much time and I > > don't > > > > know what else could be. > > > > > Thanks in advance. > > > > > -- > > > > Jairo Vasquez Moreno > > > > Mentez Developer > > > >www.mentez.com > > > > Medellin - Colombia > > > > > -- > > > > You received this message because you are subscribed to the Google > > Groups > > > > "Google App Engine" group. > > > > To post to this group, send email to [email protected] > > . > > > > To unsubscribe from this group, send email to > > > > [email protected]<google-appengine%2Bunsubscrib > > > > [email protected]><google-appengine%2Bunsubscrib > > [email protected]> > > > > . > > > > For more options, visit this group at > > > >http://groups.google.com/group/google-appengine?hl=en. > > > > -- > > > Ikai Lan > > > Developer Programs Engineer, Google App Enginehttp:// > > googleappengine.blogspot.com|http://twitter.com/app_engine > > > -- > > You received this message because you are subscribed to the Google Groups > > "Google App Engine" group. > > To post to this group, send email to [email protected]. > > To unsubscribe from this group, send email to > > [email protected]<google-appengine%2Bunsubscrib > > [email protected]> > > . > > For more options, visit this group at > >http://groups.google.com/group/google-appengine?hl=en. > > -- > Ikai Lan > Developer Programs Engineer, Google App > Enginehttp://googleappengine.blogspot.com|http://twitter.com/app_engine -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
