Maybe I misunderstood this but from what I read I may have several problems creating many to many objects relations in the data store. So I hope I am wrong. Can anyone provide me with ideas on realizing such a system on GAE/J?
What I need is many students can have many files (meaning Student A can have File A and Student B can have File A while Student A also can have N other different files that he may or may not share with other students). How can I implement a relatively simple DB model for Google App Engine (And please provide how to implement a "get all student files" method)?