Get and update DXL attributes via OSLC Api

Hi,

I'm trying to get the dxl attributes from the Modules via the OSLC query capbilities. But i couldt get the field along with the general attributes, is there any other capability to get the dxl attributes via OSLC API? and one more question is can the dxl attributes be updated along with the general atttributes or does it require any special api call to update?