<xsl:variable name="base-type-qname"
select="resolve-QName(xs:schema/xs:simpleType[2]/xs:restriction/@base,
xs:schema/xs:simpleType[2]/xs:restriction)"
<xsl:variable name="base-type-local-name"
select="local-name-from-QName($base-type-qname)"/>
<xsl:variable name="base-type-namespace-uri"
select="namespace-uri-from-QName($base-type-qname)"/>
<xsl:variable name="type-local-name" select="xs:schema/xs:simpleType[1]/@name"/>
<xsl:variable name="type-namespace-uri" select="xs:schema/@targetNamespace"/>
<xsl:variable name="basetype-is-type" select="if ( $base-type-local-name =
$type-local-name" and $base-type-namespace-uri = $type-namespace-uri)
then true
else false"/>
Lisa
--- On Fri, 4/8/11, Costello, Roger L. <costello(_at_)mitre(_dot_)org> wrote:
From: Costello, Roger L. <costello(_at_)mitre(_dot_)org>
Subject: [xsl] How to compare two QName values in an XML Schema?
To: "xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com"
<xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com>
Received: Friday, April 8, 2011, 11:00 AM
Hi Folks,
Below is an XML Schema, containing two simpleTypes. The
second one references the first.
I want an XPath expression that compares the second
simpleType's reference to the name of the first simpleType:
/xs:schema/xs:simpleType[1]/@name
eq
/xs:schema/xs:simpleType[2]/xs:restriction/@base
That returns False. I want it to return True.
I figured the reason it's returning False is because it is
comparing the string "elev:BostonAreaSurfaceElevation"
against the string "EarthSurfaceElevation". Yes?
I want it to do a comparison of QNames, not strings. So I
type-cast the values:
xs:QName(/xs:schema/xs:simpleType[1]/@name)
eq
xs:QName(/xs:schema/xs:simpleType[2]/xs:restriction/@base)
But that gave me this error:
Casting from xs:unTypedAtomic to xs:QName
can never succeed.
Why?
What's the correct way to do the comparison?
---------------------------------------------------------
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema";
targetNamespace="http://www.elevation.org";
xmlns:elev="http://www.elevation.org";
elementFormDefault="qualified">
<xsd:simpleType name=
"EarthSurfaceElevation">
<xsd:restriction
base="xsd:integer">
<xsd:minInclusive value="-1290"/>
<xsd:maxInclusive value="29035"/>
</xsd:restriction>
</xsd:simpleType>
<xsd:simpleType name=
"BostonAreaSurfaceElevation">
<xsd:restriction
base="elev:EarthSurfaceElevation">
<xsd:minInclusive value="0"/>
<xsd:maxInclusive value="120"/>
</xsd:restriction>
</xsd:simpleType>
</xsd:schema>
---------------------------------------------------------
/Roger
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