I'm new to XSLT 2.0. I tried this example in Altova and couldn't get the output
below. I'm not sure if the input is wrong or my xsl is incorrect. Thanks for
your time!
<verse>
<part role=3D"a">...</part>
<part role=3D"a">...</part>
<part role=3D"b">...</part>
</verse>
<verse>
input xml:
<verses>
<role name="a">
<verse>...</verse>
<verse part="beginning">1</verse>
</role>
<role name="a">
<verse part="continuation">continuation 2</verse>
</role>
<role name="b">
<verse part="continuation">continuation 3</verse>
</role>
<role name="b">
<verse part="end">end</verse>
<verse>...</verse>
</role>
<role name="a">
<verse>...</verse>
<verse part="beginning">1</verse>
</role>
<role name="a">
<verse part="continuation">continuation 2</verse>
</role>
<role name="b">
<verse part="continuation">continuation 3</verse>
</role>
<role name="b">
<verse part="end">end</verse>
<verse>...</verse>
</role>
</verses>
xsl:
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
xmlns:fo="http://www.w3.org/1999/XSL/Format";
xmlns:xs="http://www.w3.org/2001/XMLSchema";
xmlns:fn="http://www.w3.org/2005/xpath-functions";>
<xsl:template match="verses">
<xsl:for-each-group select="*"
group-starting-with="role/verse[empty(@part)] | verse[(_at_)part='beginning']">
<xsl:variable name="verse-number" select="position()"/>
<verse>
<xsl:for-each select="current-group()">
<part role="parent::role/@name">
<xsl:copy-of select="node()"/>
</part>
</xsl:for-each>
</verse>
</xsl:for-each-group>
</xsl:template>
</xsl:stylesheet>
From: mike(_at_)saxonica(_dot_)com
To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Date: Fri, 18 Dec 2009 09:45:18 +0000
Subject: RE: [xsl] Number of elements with a given attribute
In a piece of theater, I have some verses that are split
between different roles.
The other are tagged on the following model:
<role name='...'>
...
<verse>...</verse>
<verse part="beginning">...</verse>
</role>
<role name='...'>
<verse part="continuation">...</verse> </role> <role name='...'>
<verse part="continuation">...</verse> </role> <role name='...'>
<verse part="end">...</verse>
<verse>...</verse>
...
</role>
I wish to have the count of preceding parts of verse from the
last beginning part.
Regards,
A classic case of two overlapping hierarchies running over the same data.
One of these hierarchies is represented directly in the XML tree structure,
the other is represented indirectly. You want to perform an operation on the
"hidden" hierarchy, so it's best to invert the structure so the verse
hierarchy becomes the primary one. That is, you want:
<verse>
<part role="a">...</part>
<part role="a">...</part>
<part role="b">...</part>
</verse>
<verse>
...
which can be done like this:
<xsl:for-each-group select="$verses"
group-starting-with="verse[empty(@part)] | verse[(_at_)part='beginning']">
<xsl:variable name="verse-number" select="position()"/>
<verse>
<xsl:for-each select="current-group()">
<part role="parent::role/@name">
<xsl:copy-of select="node()"/>
</part>
</xsl:for-each>
</verse>
</xsl:for-each-group>
You now have each verse represented by a complete element, broken into parts
to show who speaks each part of the verse, and this makes it easy for
example to number the parts of a verse as you have asked for.
Regards,
Michael Kay
http://www.saxonica.com/
http://twitter.com/michaelhkay
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