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Tim Bray wrote: > Jeni Tennison wrote: > >> As a W3C XML Schema user, I'm frustrated by the inability to actually >> get at all the "interesting" information that validation against a >> schema adds to a document, and want XPath 2.0 to give me that >> mechanism. > > > The problem with that wordview is that Xpath/Xquery are clearly mostly > going to be used at application run-time. I think the proportion of > cases where XMLSchema validation happens at application run-time is > going to be way short of 100%. I personally think's actually going to > be way short of 25%, it's useful for design support and debugging but > it's just not at the right level for business-logic validation. There is a faith out there that schemas are the right way to bootstrap from the world of dynamically typed XML to the world of statically typed C# and Java. It is thought that this will enhance, rather than degrade performance by pushing type conversion from application logic down into infrastructure. I don't personally believe this myself but I think that you need to understand it to understand the schema mindset. Paul Prescod
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