[appengine-java] Beating the 1MB datastore restriction

Hello there! I am trying to implement a basic file sharing service and, as you may already know, the datastore imposes a 1MB limit for the size of any blob, i thought that i could bypass this obstacle by spliting the file into several blobs but found out that the mentioned limit applies for the wh

[appengine-java] JDO owned many to one relationship question

Hello there! I have the following owned many to one relationship defined, a project has many files and files belongs to one and only one project (the code is below). Nevertheless, i cant save any relationships, i've managed to save files and projects but no relationships between them and if check