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Re: XPath/XSLT 2.0 concerns

• To: Jeni Tennison <jeni@j...>
• Subject: Re: XPath/XSLT 2.0 concerns
• From: Tim Bray <tbray@t...>
• Date: Wed, 02 Oct 2002 07:21:53 -0700
• Cc: Mike Champion <mc@x...>, xml-dev@l...
• References: <72RLYT04POLJXV95A7FBMJXRM82TRVT.3d9a6f4c@MChamp> <144498584266.20021002103555@j...>
• User-agent: Mozilla/5.0 (Macintosh; U; PPC Mac OS X; en-US; rv:1.1) Gecko/20020826

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.

The basic notion getting wired into XQuery and friends that you've 
basically always run it through a schema is theoretically interesting 
but WRONG.

> I think that XQuery has been really held back from really addressing
> the community of schema users by the requirement to be simple

I see no evidence in XQuery in any evidence whatsoever in simplicity.

, and
> that XSLT 2.0 has been vastly complicated by the requirement to supply
> schema information. 

Agreed. -Tim

• Follow-Ups:
  • Re: XPath/XSLT 2.0 concerns
    • From: Paul Prescod <paul@p...>
  • RE: XPath/XSLT 2.0 concerns
    • From: "Aaron Skonnard" <aarons@d...>
  • Re: XPath/XSLT 2.0 concerns
    • From: Jeni Tennison <jeni@j...>
  • Re: XPath/XSLT 2.0 concerns
    • From: Tim Bray <tbray@t...>

• References:
  • Re: XPath/XSLT 2.0 concerns
    • From: Mike Champion <mc@x...>
  • Re: XPath/XSLT 2.0 concerns
    • From: Jeni Tennison <jeni@j...>

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