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Re: A question for RDF parser implementers - whitespace

From: Jeremy Carroll <jjc@hplb.hpl.hp.com>
Date: Tue, 13 Jul 2004 08:57:28 +0100
Message-ID: <40F395E8.5090102@hplb.hpl.hp.com>
To: Norman Walsh <Norman.Walsh@Sun.COM>
Cc: www-rdf-interest@w3.org

> Correct. In order to get the whitespace handling right you need to
> understand the datatype specified.
> 
> Which is impossible, in the general case, I suppose:
> 
>      <foo:bar rdf:datatype="http://example.org/XMLSchema#myFooType"
>       > 42.4 </geo:lat>
> 


What we wrote was:

http://www.w3.org/TR/rdf-concepts/#section-Datatypes

[[
In [XML-SCHEMA1], white space normalization occurs during validation 
according to the value of the whiteSpace facet. The lexical-to-value 
mapping used in RDF datatyping occurs after this, so that the whiteSpace 
facet has no effect in RDF datatyping.
]]

i.e.
" 42.4 "^^xsd:decimal

is simply a datatyping error," 42.4 " is not an xsd:decimal, "42.4" is.

RDF/XML expects the whitespace validation to have been done before the 
document was written

Jeremy
Received on Tuesday, 13 July 2004 04:44:49 UTC

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