I'm currently developing with Java. If it's any help, I did this... I produced a throw-away servlet that:
On a GET request outputs a base-64 encoded gzipped serialized stream of every Entity object that I wanted to preserve from the old datastore, wrapped-up in a HTML form. On a POST request reverses the stream encoding, and simply calls Datastore.put() on every entity that comes out of the stream. To transfer the data between the two App Engine versions, I just started-up the old version, requested the form, stopped the server, started-up the new version, and submitted the form. Amazingly, this worked with no (apparent) problems and it was very quick to implement. Tom. On 16 February 2011 13:06, luka <[email protected]> wrote: > Hello, > You probably aware of the following issue: > After upgrading from GAE 1.4.0 to 1.4.2 the local data-store is completely > deleted. > > Cheers > Uri > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine for Java" 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-java?hl=en. > -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" 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-java?hl=en.
