----- Original Message -----
From: "Henry S. Thompson" <>
To: "Dare Obasanjo" <>
Cc: "xml-dev" <>
Sent: Friday, January 04, 2002 3:46 AM
Subject: Re: [xml-dev] Question on using xs:pattern to restrict xs:dateTime
> "Dare Obasanjo" <> writes:
>
> > Is this a valid schema
> >
> > <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema">
> > <xsd:simpleType name="myTimeType">
> > <xsd:restriction base="xsd:dateTime">
> > <xsd:pattern value="\d\d:\d\d(:\d\d)?" />
> > <xsd:whiteSpace value="collapse" />
> > </xsd:restriction>
> > </xsd:simpleType>
> > </xsd:schema>
>
> I don't think so -- \d is not a valid W3C XML Schema pattern regexp
> component, on my reading of the REC.
Interesting I though it was part of
http://www.w3.org/TR/xmlschema-2/#nt-MultiCharEsc
[37] MultiCharEsc ::= '.' | ('\' [sSiIcCdDwW])
> > and if so why? If not, is there any validating parser that will give an
error
> > message on validating it.
>
> Sorry, XSV doesn't touch the pattern facet at all
>
Why not? From what I've seen the pattern facet can easily be made to create
illegal restrictions which none of the validating parsers I have tried warns
about.
--
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