Detecting Patterns
The patterns defined by this specification may be detected in a description
such as an , or
document using an processor.
The following example illustrates detecting a pattern
using an stylesheet:
<xsl:stylesheet version="2.0"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:ex="http://www.w3.org/2002/ws/databinding/examples/6/09/"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:wsdl11="http://schemas.xmlsoap.org/wsdl/">
<xsl:output method="text" />
<xsl:template match="/">
<xsl:apply-templates select="//xs:schema" mode="detect"/>
</xsl:template>
<xsl:template match="*" mode="detect">
<xsl:if test="count(.//xs:element/@type[resolve-QName(.,..) = xs:QName('xs:string')]) gt 0">
http://www.w3.org/2002/ws/databinding/patterns/6/09/StringElement
</xsl:if>
<!-- tests to detect other patterns .. -->
</xsl:template>
<xsl:template match="text()"/>
</xsl:stylesheet>
Similarly a schema may be assembled from this
specification and used in conjunction with a processor which
supports as follows:
<sch:schema xmlns:sch="http://purl.oclc.org/dsdl/schematron">
<sch:ns prefix="xs" uri="http://www.w3.org/2001/XMLSchema"></sch:ns>
<sch:pattern name="Basic">
<sch:rule>
<sch:report
test="count(.//xs:element/@type[resolve-QName(.,..) = xs:QName('xs:string')]) gt 0">
http://www.w3.org/2002/ws/databinding/patterns/6/09/StringElement
</sch:report>
</sch:rule>
<!-- reports to detect other patterns .. -->
</sch:pattern>
</sch:schema>
The for each pattern is constructed to return a set containing all of the Element and Attribute nodes covered by an individual pattern. Elements and attributes contained within a document not covered by a set of patterns may be detected using an expression as in the following extract:
<xsl:if select="(.//* | .//@*) except
( @targetNamespace
| .//xs:element[resolve-QName(@type,.) = xs:QName('xs:string')]/(@type)
| .. other pattern XPaths ..
)">
unexpected elements or attributes detected
</xsl:if>