If I were you I would write an on-use converter, there will be no errors and you don't have to confuse yourself with mapreduce Just check the model's property when you need it and write the new version if it's the old one
On Mar 19, 4:57 am, Robert Kluin <[email protected]> wrote: > If you have existing data you'll need to migrate it. There are a > couple techniques you can use, depending on your language choice (Java > or Python). Basically they will all involve iterating over your > entities, converting the property, then reputing the entity. If > you've got a lot of data you might look at using the map-reduce lib. > > http://code.google.com/appengine/articles/update_schema.htmlhttp://code.google.com/p/appengine-mapreduce/ > > Robert > > On Fri, Mar 18, 2011 at 18:31, Tapir <[email protected]> wrote: > > . > > > -- > > 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 > > athttp://groups.google.com/group/google-appengine?hl=en. -- 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.
