Data are persistent across deploys. You only need to keep the same name for the entities and have compatible models. If you cannot see old data, probably you have done changes to your data model. Anyway, you should be able to see your application data from the admin console (datastore viewer). This can help you determine whether you are having trouble with data persistence or with changes in your data model. You should see all your previously existing entities.
If you mean "update local data to live servers", so you can use data you produced on your local machine to initialize your app, there's a tool called bulk loader. I never used it but there's an interesting post on Ikai Lan's blog http://ikaisays.com/2010/06/10/using-the-bulkloader-with-java-app-engine/ Regards Lorenzo On Oct 28, 2:23 am, qiwawa <[email protected]> wrote: > Is this a non-issue at all? Anyone? > Thank you. > > On Oct 26, 7:37 pm, qiwawa <[email protected]> wrote: > > > I wanted to keep the data when upgrading my app to a new version. How > > can I do this? > > > Each time I upgrade it it looks like my data was lost. There is no way > > in admin area that i can back up my data before upgrade. > > > Thanks. > > > Q -- 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.
