Hey Dimitre,
I ran the same stylesheets against a build of Saxon 8 that is completely
different than your build (more on that a little later in the week) and
received the exact same error. But the problem isn't within the
<xsl:sort> its with the max function -> max(f:map($vfunMaxDepth,
$pNode/node())) + 1"/> on line 19 of "func-maxDepth.xsl" file.
I'm looking through your functions now attempting to decipher what is
actually being passed along to the f:map function and the f:apply
function that is causing the max function to throw the number conversion
error but I'll shoot this to you now in case you already know where the
problem might be...
Hope this helps!
<M:D/>
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-----Original Message-----
From: Dimtre Novatchev [mailto:dnovatchev(_at_)gmail(_dot_)com]
Sent: Sunday, June 27, 2004 5:56 AM
To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject: [xsl] Is this a Saxon 8.0 bug ?
In trying XSLT 2.0 to solve the recently posted problem by Mike
Trotman (see "Sorting subtrees based on their maximum depth.") I came
up with the following solution:
<xsl:stylesheet version="2.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
xmlns:f="http://fxsl.sf.net/";
exclude-result-prefixes="f"
<xsl:import href="func-maxDepth.xsl"/>
<xsl:output omit-xml-declaration="yes"/>
<xsl:strip-space elements="*"/>
<!-- This transformation must be applied to:
testMaximum3.xml
-->
<xsl:template match="node()|@*">
<xsl:copy>
<xsl:apply-templates select="node()|@*"/>
</xsl:copy>
</xsl:template>
<xsl:template match="*[folder]">
<xsl:copy>
<xsl:copy-of select="@*"/>
<xsl:apply-templates select="folder">
<xsl:sort select="f:maxDepth(.)" data-type="number"/>
</xsl:apply-templates>
<xsl:apply-templates select="node()[not(self::folder)]"/>
</xsl:copy>
</xsl:template>
</xsl:stylesheet>
The stylesheet module
func-maxDepth.xsl:
===============
<xsl:stylesheet version="2.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
xmlns:xs="http://www.w3.org/2001/XMLSchema";
xmlns:f="http://fxsl.sf.net/";
xmlns:MyMaxDepth="MyMaxDepth"
exclude-result-prefixes="xs f MyMaxDepth"
<xsl:import href="func-map.xsl"/>
<xsl:output omit-xml-declaration="yes"/>
<xsl:variable name="vfunMaxDepth"
select="document('')/*/MyMaxDepth:*[1]"/>
<xsl:function name="f:maxDepth" as="xs:integer">
<xsl:param name="pNode" as="node()"/>
<xsl:value-of select="if (not($pNode/node())) then 0
else
max(f:map($vfunMaxDepth, $pNode/node()))
+
1"/>
</xsl:function>
<MyMaxDepth:MyMaxDepth/>
<xsl:template match="MyMaxDepth:*">
<xsl:param name="arg1" as="node()"/>
<xsl:sequence select="f:maxDepth($arg1)"/>
</xsl:template>
</xsl:stylesheet>
The stylesheet module
func-map.xsl:
==========
<xsl:stylesheet version="2.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
xmlns:f="http://fxsl.sf.net/";
exclude-result-prefixes="f"
<xsl:import href="func-apply.xsl"/>
<xsl:function name="f:map" as="item()*">
<xsl:param name="pFun" as="element()"/>
<xsl:param name="pList1" as="item()*"/>
<xsl:sequence select=
"for $this in $pList1 return
f:apply($pFun, $this)"
/>
</xsl:function>
</xsl:stylesheet>
And, finally, the stylesheet module
func-apply.xsl:
==========
<xsl:stylesheet version="2.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
xmlns:f="http://fxsl.sf.net/";
exclude-result-prefixes="f"
<xsl:function name="f:apply">
<xsl:param name="pFunc" as="element()"/>
<xsl:param name="arg1"/>
<xsl:apply-templates select="$pFunc">
<xsl:with-param name="arg1" select="$arg1"/>
</xsl:apply-templates>
</xsl:function>
</xsl:stylesheet>
The problem is that when I run the top-most transformation I get the
following error:
Saxon 8.0 from Saxonica
Java version 1.4.2_04
Stylesheet compilation time: 469 milliseconds
Processing
file:/C:/xml/msxml/XML%20SDK/Samples/Tests/Generic/FP/Fxsl/Exslt-
Based/marrowtr.xml
Building tree for
file:/C:/xml/msxml/XML%20SDK/Samples/Tests/Generic/FP/Fxsl/Exslt-
Based/marrowtr.xml
using class net.sf.saxon.tinytree.TinyBuilder
Tree built in 0 milliseconds
Tree size: 10 nodes, 0 characters, 8 attributes
Building tree for
file:/C:/xml/msxml/XML%20SDK/Samples/Tests/Generic/FP/Fxsl/XSLT2/func-
maxDepth.xsl
using class net.sf.saxon.tinytree.TinyBuilder
Tree built in 16 milliseconds
Tree size: 12 nodes, 0 characters, 15 attributes
Error at value-of on line 21 of
file:/C:/xml/msxml/XML%20SDK/Samples/Tests/Generic/FP/Fxsl/XSLT2/func-
maxDepth.xsl:
Failure converting {} to a number
Transformation failed: Run-time errors were reported
The run-time error is explained in the last four lines above.
The source xml document on which the transformation is applied is:
<root>
<folder name="1">
<folder name="2"/>
<folder name="3">
<folder name="4"/>
</folder>
</folder>
<folder name="6">
<folder name="7">
<folder name="8">
<folder name="9"/>
</folder>
</folder>
</folder>
</root>
However, I am able to run simpler transforms calling the function
f:maxDepth() for every "folder" element of the above xml document,
e.g. running this transformation:
<xsl:stylesheet version="2.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
xmlns:f="http://fxsl.sf.net/";
exclude-result-prefixes="f"
<xsl:import href="func-maxDepth.xsl"/>
<xsl:output omit-xml-declaration="yes"/>
<xsl:strip-space elements="*"/>
<!-- This transformation must be applied to:
testMaximum3.xml
-->
<xsl:template match="/">
<xsl:value-of select="f:maxDepth(/*/folder[(_at_)name=6])"/>
</xsl:template>
</xsl:stylesheet>
produces the correct result "3" and no error is reported.
The only difference b/n the two transforms is that in the first,
problematic one, I am using f:maxDepth within the @select expression
of xsl:sort.
So, my question is if I'm doing something wrong in the top-most (first
in this message) transformation, or is this a bug in Saxon 8 and if
this is a bug, what is the recommended workaround.
Thanks to Mike Kay in advance,
Cheers,
Dimitre Novatchev.
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