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[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] RE: dynamically generated XML Schema?! Re: R: [xml-d
 I have often thought about the concept of dynamically generated WSDL documents, for cases in which more ad-hoc interaction among systems needs to occur, perhaps driven by the context of a request. But I think we're a ways off from that in terms of standards and products - if it is indeed a useful concept. Kind Regards, Joseph Chiusano Booz Allen Hamilton Strategy and Technology Consultants to the World > -----Original Message----- > From: Burak Emir [mailto:Burak.Emir@e...] > Sent: Wednesday, November 03, 2004 6:56 AM > To: Michael Kay > Cc: 'Chizzolini Stefano'; xml-dev@l... > Subject: Re: dynamically generated XML Schema?! Re: > R: Number of active public XML schemas > > Michael Kay wrote: > > >>Who needs to dynamically generate schemas? The whole point > of schemas > >>is to be a widespread, well understood description of instances. > >> > >> > > > >There was someone with that need writing to the list a few > days ago. It > > > > > I am aware of that request for help, but I disagree. You were > suggesting > to her that multiple schemas might do the trick. > > >seems entirely legitimate to me to apply different schemas > to the same > >document at different stages of a workflow, or for senders > of documents to > >apply stronger validation criteria than recipients of the > same documents. > > > > > > > Granted, but does that require a "dynamically generated" schema? > > By dynamically generated, I understand this: A clever way of > doing many > matrix multiplications is to use dynamic programming (ordering the > multiplications once you know all the matrices' dimensions). > > A web application may dynamically generate a response for a request. > > In the use case you seem to suggest, senders seem to refine > schemas to > achieve tighter checking. If one knows in advance that one wants such > refinement, one can write the schemas by hand. If not, then finding a > mechanical transformation for the old schema will not help much. > > I guess, the problem for that use case is modularity. > > Coming back to "dynamically generated", I think the very fact that > somebody can write a mechanical transform to generate one schema from > another hints at enough anticipation of requirements that the > original > schema could have been written in an extensible way in the > first place. > > regards, > Burak Emir > > http://lamp.epfl.ch/~buraq > > ----------------------------------------------------------------- > The xml-dev list is sponsored by XML.org <http://www.xml.org>, an > initiative of OASIS <http://www.oasis-open.org> > > The list archives are at http://lists.xml.org/archives/xml-dev/ > > To subscribe or unsubscribe from this list use the subscription > manager: <http://www.oasis-open.org/mlmanage/index.php> > > 
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