Hi mind4u, It's not possible to filter for entities that don't have values for a particular property. If you need to retrieve this entity, you will need to find some other criteria, or iterate through all candidate entities looking for it.
-Nick Johnson On Wed, May 20, 2009 at 9:40 AM, mind4u <[email protected]> wrote: > > Static listproperty is not stored in datastore if it does'nt have any > value. > So, I don't know how to get entities which have empty listproperty . > > How can I get t1 by gql from follow example? > --------------------------------------------------------------------------------------- > > class TestList(db.Model): > acl = db.ListProperty(int) > > t = TestList(acl=[1,2,3]) > t.put() > > t1 = TestList(acl=[]) > t1.put() > > t2 = TestList(acl=[4,5]) > t2.put() > > > > --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
