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
