EclipseLink 2.4 will support JPA access to NoSQL databases. This support is already part of the EclipseLink development trunk and can be tried out using the milestone or nightly builds. Initial support is provided for MongoDB and Oracle NoSQL. A plug-able platform and adapter layer allows for other databases to be supported.
I know the intentions are good, but JPA for NoSQL doesn’t make too much sense to me: object-relational mapping applied to non-relational data models.
Original title and link: NoSQL Databases MongoDB and Oracle NoSQL Support Added to EclipseLink JPA ( ©myNoSQL)