Hi Max,
I have tried to add Ant builder into my project, which did the buildtime instrumentation, but it has slowed Eclispe a little bit.
Finally, I am implementing a trick by Paweł Kępka: http://justonjava.blogspot.com/2010/09/lazy-one-to-one-and-one-to-many.html So I do not need buildtime instrumentationany more.