Hello,
I've been developping a library to provide and easy way to marshal to and unmarshal from HAL representations, using annotations similar to the JAXB API. It also implements a ContentHandler for JAX-RS to transparently consume and produce HAL+JSON or HAL+XML in REST services.
It's an early version, maybe buggy and poorly documented, but I intend to improve it.
Every suggestion is welcomed!
Regards,
Mikel