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Re: XPath 1.5? (was RE: typing and markup)

• To: Jeni Tennison <jeni@j...>
• Subject: Re: XPath 1.5? (was RE: typing and markup)
• From: Jonathan Robie <jonathan.robie@d...>
• Date: Thu, 09 May 2002 13:39:48 -0700
• Cc: xml-dev@l...
• In-reply-to: <1201500029117.20020509183136@j...>
• References: <5.1.0.14.0.20020509061627.00b93a18@n...><5.1.0.14.0.20020508075809.048c7e98@n...><5.1.0.14.0.20020508063440.0498cd58@n...><001901c1f5a1$88103d70$6501a8c0@pcukmka><p04330103b8fd71b18eac@[192.168.254.4]><5.1.0.14.0.20020507090946.04de98a8@n...><5.1.0.14.0.20020508063440.0498cd58@n...><5.1.0.14.0.20020508075809.048c7e98@n...><5.1.0.14.0.20020509061627.00b93a18@n...>

At 06:31 PM 5/9/2002 +0100, Jeni Tennison wrote:
> > At least some schema validators do make the PSVI information
> > available (via regrettably proprietary interfaces), so I don't see
> > why this information can't be exploited. Again, it might make more
> > sense to use a separate "lint-and-optimizing-rewrite" tool to check
> > and optimize a stylesheet rather than do this every time a
> > stylesheet is executed.
>
>I (or the XQuery Semantics WD) might be behind the times, but the
>current WD indicates that "XML Schema is based on named typing, while
>the XQuery type system is based on structural typing." The definition
>of a "subtype" in the XQuery Semantics WD is not the same as a
>"derived type" in XML Schema. That's why I say that implementers need
>to implement this validation themselves rather than reuse the code of
>XML Schema validators

Actually, our issues list is significantly behind the document itself, a 
victim of our rush to publication. The current XQuery specification has 
incorporated the "Named Typing Proposal", which has largely eliminated 
these discrepancies. We're still working out a few bumps and wrinkles.

Jonathan

• References:
  • Re: XPath 1.5? (was RE: typing and markup)
    • From: Jonathan Robie <jonathan.robie@d...>
  • Re: XPath 1.5? (was RE: typing and markup)
    • From: Jonathan Robie <jonathan.robie@d...>
  • Re: XPath 1.5? (was RE: typing and markup)
    • From: Jonathan Robie <jonathan.robie@d...>
  • RE: XPath 1.5? (was RE: typing and markup)
    • From: "Michael Kay" <michael.h.kay@n...>
  • RE: XPath 1.5? (was RE: typing and markup)
    • From: Elliotte Rusty Harold <elharo@m...>
  • Re: XPath 1.5? (was RE: typing and markup)
    • From: Jonathan Robie <jonathan.robie@d...>
  • Re: XPath 1.5? (was RE: typing and markup)
    • From: Jeni Tennison <jeni@j...>

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