we have just released a new library API to add Grails' Gorm-like methods to standard eBean entities. The result is like GORM but replacing Hibernate with EBean, which results very usefull (as EBean is not session based) in multithreaded environments such as Swing applications.
We have released the library until LGPL opensource license. The project site is: http://github.com/nortia/gorm4ebean ...
I expect it can be usefull for you.