Adding is fairly easy as leszek notes. Removal is harder because removing a field from a JDO/JPA class does not delete the data stored under the corresponding property in the datastore. You will have to write a script to explicitly delete this data if you don't want it to continue counting against your storage quota. - Jason
On Wed, Aug 19, 2009 at 2:23 AM, mar_novice <[email protected]> wrote: > > Thank you very much for that info. That's a big help. > > On Aug 19, 4:51 pm, leszek <[email protected]> wrote: > > Just do it, it will work as you expect. GAE is "scheme-less" database, > > it has no any scheme or dictionary attached. It is like old "WYSIWYG" > > What You See (in the entity class definition) Is What You Get. After > > adding new property existing data will read null and you can set and > > update. After removing property existing data will not read this > > property. > > > --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
