[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] RE: The Knights of Tag Soup
> -----Original Message----- > From: Rick Jelliffe [mailto:ricko@a...] > > From: "Mike Champion" <mc@x...> > > > I'm under the impression that managing schema evolution > > is a Hard Problem; lots of the complexity > > of WXS is there to make the problem more manageable by employing > > notions of partial re-use that come from the OO world, but it's > > not clear to me that best practices have emerged for using it. > > Hard Problems are often merely inadequately analysed > problems. For example, why should we expect that "Schema > evolution" can be be solved by a single mechanism? [...] Sounds like WXS could use a (drumroll... tada!) meta-object protocol. See: http://www2.parc.com/csl/groups/sda/projects/mops/ but then it wouldn't be WXS anymore... Bill de hÓra -- Propylon www.propylon.com OT Java factoid: Gregor Kiczales is working in a Java JSR to allow metadata annotations to Java elements. Given his work in Common Lisp and its meta-object protocol and Aspect oriented programming, what falls out of that JSR might be very interesting: <http://www.jcp.org/jsr/detail/175.jsp>. Slightly less OT java factoid: this JSR for web services metadata builds the above: <http://www.jcp.org/jsr/detail/181.jsp>
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