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RE: [xsl] Schema aware XPath 2.0 doubt
Subject: RE: [xsl] Schema aware XPath 2.0 doubt From: "Michael Kay" <mike@xxxxxxxxxxxx> Date: Sat, 9 May 2009 10:24:47 +0100 |
Yes, this would succeed if element x were validated as an element of type xs:date. The reason is that operators like "gt" that expect an atomic value, if given a node as an argument, will automatically "atomize" the node. This extracts the typed value, which in this case is an atomic value of type xs:date. Michael Kay http://www.saxonica.com/ > -----Original Message----- > From: Mukul Gandhi [mailto:gandhi.mukul@xxxxxxxxx] > Sent: 09 May 2009 05:38 > To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx > Subject: [xsl] Schema aware XPath 2.0 doubt > > Hi all, > Let's say, I have following XML document: > > <x>2008-12-01</x> > > And the following XPath 2.0 expression, > > [1] > x gt xs:date('2007-12-01') > > The evaluation of this expression fails, with non schema > aware XSLT 2.0/XPath 2.0 system (as x is not of type xs:date. > it's actually an element). > > But if we had a Schema aware XSLT 2.0/XPath 2.0 system, and > the above XML document was validated with a Schema (with > element x being assigned a Schema type xs:date), would the > above XPath 2.0 expression succeed in this case (i.e., with a > Schema aware XPath 2.0 system)? > > The XPath 2.0 specification for operator, op:date-greater-than (ref, > http://www.w3.org/TR/xpath-functions/#func-date-greater-than) > specifies: > > op:date-greater-than($arg1 as xs:date, $arg2 as xs:date) as xs:boolean > > which makes me think that, both arguments to the operator > 'gt' must be of type xs:date. So the XPath 2.0 expression [1] > would fail in case of Schema aware system also. > > Could somebody please clarify this to me. > > > -- > Regards, > Mukul Gandhi
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