No, this is not expected behavior. Try rolling back your application and seeing if this still occurs. I suspect something else is wrong - you just need to narrow down the version of your application that causes this to happen.
2010/4/27 Marcos VinÃcius Soares <[email protected]> > I believe this is not allowed. Once you change a class you cannot retrieve > the older objects anymore. In this case, you added a field to a class, but, > what if you had removed two fields!? How is the framework supposed to treat > this!? > > Try rolling back your class and see if you can retrieve the old objects. I > believe you will only be able to get them this way. > > > > > On Tue, Apr 27, 2010 at 4:22 PM, kghate <[email protected]> wrote: > >> any ideas on what I am doing wrong? Please help! >> >> On Apr 27, 12:31 am, kghate <[email protected]> wrote: >> > I am storing some persistent data and all is working fine, I have a >> > simple data class per examples provided in the "Storing Data" section. >> > >> > However, I noticed that all my stored data got reset to null when I >> > added a couple new fields to be stored. >> > >> > To give an example, my "employee" data class was storing firstName and >> > DOB and had 5 entries. I added two more fields, lastName and >> > isPermanent and found that my earlier 5 entries got reset to null. The >> > new data class is working fine and all new entries are being stored as >> > expected, but I lost existing entries. >> > >> > What am I doing wrong here? Is this expected behavior? How do I ensure >> > that existing data does not get reset when new persistent fields are >> > added to the data class? >> > >> > Please help! >> > >> > -- >> > 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]<google-appengine-java%[email protected]> >> . >> > For more options, visit this group athttp:// >> 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]<google-appengine-java%[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]<google-appengine-java%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/google-appengine-java?hl=en. > -- Ikai Lan Developer Relations, Google App Engine Twitter: http://twitter.com/ikai Delicious: http://delicious.com/ikailan ---------------- Google App Engine links: Blog: http://googleappengine.blogspot.com Twitter: http://twitter.com/app_engine Reddit: http://www.reddit.com/r/appengine -- 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.
