Map Your Objects using EclipseLink's Native OXM
EclipseLink offers meet-in-the-middle object-to-XML mapping. This allows you to map an existing Java objects to an existing XML schema. This can be done programmatically or visually using our mapping editor.
Create a sessions.xml file
Create a sessions.xml file. There are two vital pieces of information to capture. The first is the name of the session, this name must correspond to the context path you wish to use when creating the JAXBContent. The second is the location of your mapping metadata.
Create the JAXBContext
Create the JAXBContext using the context path option: