Hi, I think that this thread is useful. http://groups.google.com/group/google-appengine-java/browse_thread/thread/d13d469752c825e7
Hope this helps, thanks. >when a new property is added for an existing entity, new entity will >be created along with the new property, >whereas the old entity shows as missing for the new property. > >when a query is executed > >the following exception is shown. > >Exception : java.lang.NullPointerException: Datastore entity with kind >TestEntity and key TestEntity(9001) has a null property named >position. This property is mapped to com.entity.TestEntity.position, >which cannot accept null values. > >how to add new property for an existing entity ? > >-- >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 google-appengine-j...@googlegroups.com. >To unsubscribe from this group, send email to google-appengine-java+ >unsubscr...@googlegroups.com. >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 google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
