Hello,

That would be great to provide a way to handle nullable fields with java.util.Optional<T>.

If the field is nullable, then it must be wrapped with Optional<T>
if the field is not nullable, the if can't be null (RuntimeException)

A year ago, i made a POC with Guava optional here : https://github.com/dgouyette/hibernateOptional

If you want i can provide a pull request, maybe i'll need some help