I am very excited to announce that EclipseLink 2.4.0 is now available for download.
Highlights of this release include:....
RESTFul PersistenceJava Persistence units can now be exposed over REST using either JSON or XML media.
Tenant Isolation - Table per tenantDevelopers can design and deploy applications where their persistent entities are stored in separate tables per tenant.
NoSQLThis release introduces EclipseLink's NoSQL support for MongoDB and Oracle NoSQL.
JSONEclipseLink MOXy can now be used for the marshaling and unmarshaling of JSON object. This is core infrastructure to the JPA-RS feature.
... and much, much more...
Please see this link for a complete feature list and to download 2.4.0 to try it yourself!!
See also: Doug Clarke's Blog on 2.4