W3C home > Mailing lists > Public > xmlschema-dev@w3.org > February 2007

RE: References to a value of an element in another element?

From: Michael Kay <mike@saxonica.com>
Date: Sun, 4 Feb 2007 09:38:13 -0000
To: "'Michael Kay'" <mike@saxonica.com>, "'Boris Kolpackov'" <boris@codesynthesis.com>, <noah_mendelsohn@us.ibm.com>
Cc: <ccodere@ieee.org>, "'Pete Cordell'" <petexmldev@tech-know-ware.com>, <xmlschema-dev@w3.org>
Message-ID: <009c01c74840$30fc33d0$6401a8c0@turtle>

> On the other hand, it might be that everyone ends up 
> implementing the whole of XPath 2.0 because it's too much of 
> a pain to implement a subset. That's certainly what I intend to do.

On this subject, I do hope that the WG won't end up deciding to require a
subset "for the convenience of implementors". That's almost always a bad
thing to do. The current spec has an example of it - the rules for defining
valid derivation of xs:all types require the processor to treat the order of
the xs:all particles as significant, and the spec is quite explicit that
this rule is there only for the convenience of implementors. Well, I found
it really inconvenient to impose this restriction, so what am I supposed to
do? Impose the restriction anyway, despite the fact that it means writing a
lot of extra code?

Michael Kay
Received on Sunday, 4 February 2007 09:38:24 UTC

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