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I'm trying to query an xml file using the following xslt:
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
xmlns:bpmn="http://dkm.fbk.eu/index.php/BPMN_Ontology">
<!-- Participants -->
<xsl:template match="/">
<html>
<body>
<table>
<xsl:for-each select="Package/Participants/Participant">
<tr>
<td><xsl:value-of select="ParticipantType" /></td>
<td><xsl:value-of select="Description" /></td>
</tr>
</xsl:for-each>
</table>
</body>
</html>
</xsl:template>
</xsl:stylesheet>
Here's the contents of the xml file:
<?xml version="1.0" encoding="utf-8"?>
<?xml-stylesheet type="text/xsl" href="xpdl2bpmn.xsl"?>
<Package xmlns="http://www.wfmc.org/2008/XPDL2.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" Id="25ffcb89-a9bf-40bc-8f50-e5afe58abda0" Name="1 price setting" OnlyOneProcess="false">
<PackageHeader>
<XPDLVersion>2.1</XPDLVersion>
<Vendor>BizAgi Process Modeler.</Vendor>
<Created>2010-04-24T10:49:45.3442528+02:00</Created>
<Description>1 price setting</Description>
<Documentation />
</PackageHeader>
<RedefinableHeader>
<Author />
<Version />
<Countrykey>CO</Countrykey>
</RedefinableHeader>
<ExternalPackages />
<Participants>
<Participant Id="008af9a6-fdc0-45e6-af3f-984c3e220e03" Name="customer">
<ParticipantType Type="RESOURCE" />
<Description />
</Participant>
<Participant Id="1d2fd8b4-eb88-479b-9c1d-7fe6c45b910e" Name="clerk">
<ParticipantType Type="ROLE" />
<Description />
</Participant>
</Participants>
</Package>
Despite, the simple pattern, the foreach doesn't work. What is wrong with Package/Participants/Participant ? What do I miss here? Is there something about namespaces that I don't get?
Thanks a lot!
814
There are a number of problems in your code:
The elements of the XML document are in a default namespace but the match patterns (and select expressions) in the XSLT code use elements in "no namespace".
The two <xsl:value-of> instructions try to produce the value of ParticipantType and Description, but these two elements dont have any value.
The second problem needs that the XML document be changed so that ParticipantType and Description have values.
The first problem is a subject of many FAQs and has a well-known solution: The namespace that is default in the XML document -- must also be defined and associated with a prefix in the XSLT stylesheet. This prefix must be used when referencing names from the XML document.
After this correction the XSLT stylesheet will look like the following:
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
xmlns:bpmn="http://dkm.fbk.eu/index.php/BPMN_Ontology"
xmlns:xp="http://www.wfmc.org/2008/XPDL2.1"
>
<!-- Participants -->
<xsl:template match="/">
<html>
<body>
<table>
<xsl:for-each select="xp:Package/xp:Participants/xp:Participant">
<tr>
<td><xsl:value-of select="xp:ParticipantType" /></td>
<td><xsl:value-of select="xp:Description" /></td>
</tr>
</xsl:for-each>
</table>
</body>
</html>
</xsl:template>
</xsl:stylesheet>
Notice the newly-defined namespace with the xp: prefix.
The output now is:
<html xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:bpmn="http://dkm.fbk.eu/index.php/BPMN_Ontology" xmlns:xp="http://www.wfmc.org/2008/XPDL2.1">
<body>
<table>
<tr>
<td></td>
<td></td>
</tr>
<tr>
<td></td>
<td></td>
</tr>
</table>
</body>
</html>
You just need to solve Problem 1 and the <td>s will not be empty.
58
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