FWIW there's already a library called Objectify that's a Java-based ORM (lite) for AppEngine:

http://code.google.com/p/objectify-appengine/

If you want your project to be found easily (on search engines) I always suggest:

1. Prefer a made up word to a non-English word (or a word in any live language for that matter); and

2. Don't choose a name that something else in the same or similar space shares. They've been around longer. It's just going to make your life harder.

YMMV.