"Open Enumerations"

At the WS-I basic security profile face-to-face last week, there was 
some discussion about the fact that there are extension points in 
WS-Sec, with a few well-known QNAME and/or URI's.  For example, the 
Qname to use when sending a SOAP Fault, or the URI to use in the 
valueType attribute.

At that meeting, Martin Gudgin, or "gudge," mentioned a techique he's 
using in some of the other committees he's on.  (The list is daunting, 
and includes SOAP, WSDL, etc etc.  The man clearly has a cast-iron 
constitution.)  There had been some discussion of this on one of the 
other mailing lists, but since he's not on the WSS list, many folks here 
never saw it.  To cut to the chase, I'm forwarding one of the latest 
messages in that thread, which explains his "open enumeration" schema 
technique in detail.

At this point, I think it's just an "FYI" matter.  But it is a clever 
use of schema, and something to consider for future work.
	/r$
-- 
Rich Salz, Chief Security Architect
DataPower Technology                           http://www.datapower.com
XS40 XML Security Gateway   http://www.datapower.com/products/xs40.html
XML Security Overview  http://www.datapower.com/xmldev/xmlsecurity.html