Since OpenMRS 1.9.2 it is possible to use JPA annotations in modules. See more at:
...
- Univ Call http://connect.iu.edu/p6erdt413mz/
...
- with code at https://github.com/
...
...
...
- example-social/commit/e004b52d82d2993c3d284fb24d6a6671f2913381
- https://github.com/rapilabs/openmrs-jpa-annotation-
...