Hi Jeni,
Thanks a lot -- this is a typical mistake with the use of the idenity template.
Now the solution to Mike Trotman's problem works and looks like this:
<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="identity.xsl"/>
<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="*[folder]">
<xsl:copy>
<xsl:copy-of select="@*"/>
<xsl:apply-templates select="folder">
<xsl:sort select="f:maxDepth(.)" data-type="number"
order="descending"/>
</xsl:apply-templates>
</xsl:copy>
</xsl:template>
</xsl:stylesheet>
where the identity rule has been moved in its own file and is imported
first among all other imports.
The reason I wrote this solution was to ask the obvious question about
memoisation. This solution is top-down and will be extremely
inefficient because the maximum depth of subtrees will be
re-calculated many times.
I haven't tried to transform a big and deep-nested tree, but this is
the case where memoisation will be really helpful.
Cheers,
Dimitre.
On Sun, 27 Jun 2004 21:19:23 +0100, Jeni Tennison
<jeni(_at_)jenitennison(_dot_)com> wrote:
Hi Dimitre,
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.
You're doing something wrong in the top-most transformation: your
identity template is overriding the imported template matching
MyMaxDepth:* in func-maxDepth. Thus the f:apply() function is
returning a copy of the <MyMaxDepth:MyMaxDepth> element and the
f:map() function is returning a sequence of those elements. The max()
function is attempting to get a maximum of their values and giving an
error because it can't convert an empty string into a number.
You're not getting an error with your second top-most stylesheet
because it doesn't have this overriding identity template.
Cheers,
Jeni
---
Jeni Tennison
http://www.jenitennison.com/