The output of a transformation is a tree of nodes. It is not lexical XML
containing angle-bracket tags - those are produced from the result tree by
the serializer. Creating a node on the result tree is an atomic operation,
you can't create half a node.
The problem you are tackling is called positional grouping, In XSLT 2.0 you
can often tackle it using <xsl:for-each-group>. In 1.0 an appropriate
technique is often sibling recursion, where you process a sequence of
siblings one-by-one in a recursive template. You should be able to find
these techniques using a google search.
Michael Kay
http://www.saxonica.com/
-----Original Message-----
From: David Frey [mailto:dpfrey(_at_)shaw(_dot_)ca]
Sent: 25 June 2008 05:30
To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject: [xsl] Need to output an opening or closing tag by itself
I have a simple XSLT problem for the gurus.
This is my input document:
<root>
<e t="a"/>
<f/>
<f/>
<e t="b"/>
</root>
This is the output document I want to produce:
<root>
<e>
<f/>
<f/>
</e>
</root>
This is the stylesheet I wrote to do the transformation:
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet
version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>
<xsl:template match="/root">
<root>
<xsl:apply-templates/>
</root>
</xsl:template>
<xsl:template match="e">
<xsl:choose>
<xsl:when test="@t ='a'">
<e>
</xsl:when>
<xsl:when test="@t ='b'">
</e>
</xsl:when>
<xsl:otherwise>
<xsl:message terminate="yes">
Unexpected data in attribute t.
</xsl:message>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<xsl:template match="f">
<xsl:copy/>
</xsl:template>
</xsl:stylesheet>
Here is the Saxon output:
$ java -jar "c:\Program Files\Saxon\saxon9.jar" -o out.xml
in.xml test.xslt Error on line 16 column 9 of
file:/C:/Documents%20and%20Settings/DFREY/Desktop/test/test.xslt:
SXXP0003: Error reported by XML parser: The element type
"e" must be terminated by the
matching end-tag "</e>".
Failed to compile stylesheet. 1 error detected.
I understand that the source of the error is that the XSLT
file is not valid XML because the <e> tag doesn't have a
matching </e> tag in the right place.
How can I work around this issue to solve my problem?
Thanks,
David
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