EclipseLink is delivering a JPA implementation that competes with
Hibernate. We believe we have a solution that offers greater functionality
and performance.
We are just starting our work on packaging EclipseLink as an Equinox/OSGi
bundle to enable its usage in RCP applications. We have an initial effort
showing its usage with JPA, JAXB, and SDO. We would be interested in
verifying our proposed solution against your RCP application and getting
any feedback based on your experience.