Persistence EdgeXtend for Java is available for a free 30 day trial.

http://www.persistence.com/

Persistence Software's EdgeXtend for Java includes the Persistence Plug-Ins
for Eclipse, which boost developer productivity by supporting model-driven
development, object-to-relational mapping, and code generation. The
generated code transparently takes advantage of EdgeXtend's sophisticated
caching and synchronization, providing an ideal solution for applications
that must serve a high volume of requests with low response times and high
availability.

Download and try EdgeXtend with the Persistence Plug-Ins for Eclipse free
for 30 days.