Hi Alex, The datastore compares old values to new; there's no way for the SDK to mark properties as modified or not.
-Nick Johnson On Tue, Nov 15, 2011 at 9:49 AM, Alex Epshteyn <alexander.epsht...@gmail.com > wrote: > Alfred wrote an excellent explanation of how write ops are charged > ( http://groups.google.com/group/google-appengine/msg/ca47eb7678d50372? > ). > > My question is how does the the datastore determine whether a property > has actually changed - does it compare the new value to the saved > value or does the python db.Model class mark a property as changed > every time it's assigned (even if the values are the same). > > -- > 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. > > -- Nick Johnson, Developer Programs Engineer, 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 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.
