Why does Saxon evaluate the result-document URI to be the same?
- by Jan
My XSL source document looks like this
<Topology>
<Environment>
<Id>test</Id>
<Machines>
<Machine>
<Id>machine1</Id>
<modules>
<module>m1</module>
<module>m2</module>
</modules>
</Machine>
</Machines>
</Environment>
<Environment>
<Id>production</Id>
<Machines>
<Machine>
<Id>machine1</Id>
<modules>
<module>m1</module>
<module>m2</module>
</modules>
</Machine>
<Machine>
<Id>machine2</Id>
<modules>
<module>m3</module>
<module>m4</module>
</modules>
</Machine>
</Machines>
</Environment>
</Topology>
I want to create one result-document per machine, so I use the following stylesheet giving modelDir as path for the result-documents as parameter.
<xsl:output method="xml" version="1.0" encoding="UTF-8"
indent="yes" name="myXML" doctype-system="http://java.sun.com/dtd/properties.dtd"/>
<xsl:template match="/">
<xsl:for-each-group select="/Topology/Environment/Machines/Machine" group-by="Id">
<xsl:variable name="machine" select="Id"/>
<xsl:variable name="filename" select="concat($modelDir,$machine,'.xml')" />
<xsl:message terminate="no">Writing machine description to <xsl:value-of select="$filename"/></xsl:message>
<xsl:result-document href="$filename" format="myXML">
<xsl:variable name="currentMachine" select="Id"/>
<xsl:for-each select="current-group()/LogicalHosts/LogicalHost">
<xsl:variable name="environment" select="normalize-space(../../../../Id)"/>
<xsl:message terminate="no">Module <xsl:value-of select="."/> for <xsl:value-of select="$environment"/></xsl:message>
</xsl:for-each>
</xsl:result-document>
</xsl:for-each-group>
</xsl:template>
As my messages show me this seems to work fine - if saxon would not evaluate the URI of the result-document to be the same and thus give the following output.
Writing machine description to target/build/model/m1.xml
Module m1 for test
Module m2 for test
Module m1 for production
Module m2 for production
Writing machine description to target/build/model/m2.xml
Error at xsl:result-document on line 29 of file:/C:/Projekte/.../machine.xsl:
XTDE1490: Cannot write more than one result document to the same URI, or write to a URI
that has been read:
file:/C:/Projekte/.../$filename
file:/C:/Projekte/.../machine.xsl(29,-1) : here Cannot write more than one result document to the same URI, or write to a URI that has been read: file:/C:/Projekte/.../$filename
; SystemID: file:/C:/Projekte/.../machine.xsl; Line#: 29; Column#: -1
net.sf.saxon.trans.DynamicError: Cannot write more than one result document to the same URI, or write to a URI that has been read: file:/C:/Projekte/.../$filename
at net.sf.saxon.instruct.ResultDocument.processLeavingTail(ResultDocument.java:300)
at net.sf.saxon.instruct.Block.processLeavingTail(Block.java:365)
at net.sf.saxon.instruct.Instruction.process(Instruction.java:91)
Any ideas on how to solve this?
