More than JPAAlthough Spring has specific support for EclipseLink JPA, you can also use EclipseLink MOXy with Spring Web Services and Remoting as a JAXB provider for XML message transformation. It doesn't require any special classes--it's all just configuration in your Spring application context XML. As I type this I find myself thinking "where is the how-to for that?" and I guess I'm on the hook now. Look out for a follow up on using EclipseLink MOXy with Spring!