I represent Oracle on the JAXB (JSR-222) and SDO (JSR-235) expert groups and helped develop those specifications. I also developed a proposal for new JSON-binding JSR. I regularly blog, answer forum posts, and do conference presentations about these standards.
TopLink JAXB (EclipseLink MOXy) became the default JAXB provider in WebLogic 12.1.1. This mean the handling of all object-to-XML conversions for SOAP and RESTful Web Services in WebLogic. In addition to development, I was responsible for handling customer escalations.
SDO provides a dynamic object model that can easily be converted to/from XML. TopLink SDO is leveraged by the Oracle Applications stack.
In EclipseLink 2.4 I lead the extension of MOXy to support JSON-binding. This implementation became the default object-to-JSON converter used in GlassFish 4.0.