I might replace JPA layer in a spring mvc project with ORMLite.
A example how to do is http://ormlite.svn.sourceforge.net
There are 3 simple entity.
I ll deliver you the simple project and you adapt it working with ORMLite.
(transactional , entity annotation, bootstrap entity creation if they dont exist).
A forth entity is created in the junit test on the fly without annotation or class associated but using the simple ormlite api.
Skills: mvc, test