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).