Eclipse Persistence Services Project

 Eclipse Persistence Services Project, more commonly known as EclipseLink,
 is a Java comprehensive persistence framework delivering a set of persistence
 services based around standards. This lets you rapidly build applications
 that combine the best aspects of object technology and the specific data
 source.
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 EclipseLink was started by a donation of the full source code and
 test suites of Oracle's TopLink product.
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 EclipseLink's services currently include object-relational with JPA,
 object-XML binding in MOXy (with support for JAXB), a Service Data Objects
 (SDO) implementation and support for another technologies like: Database Web
 Services (DWS), XML-Relational (XRM) and Non-Relational (EIS via JCA).