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.html http://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 at > http://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.
