Thanks Mike for the XSLT 2.0 way to solve the problem. But it was
surprising for me that the problem cannot be solved in XSLT 1.0 using
preceding-sibling axis.
Regards,
Mukul
On 8/1/05, Michael Kay <mike(_at_)saxonica(_dot_)com> wrote:
When comparing two node-sets,
X = Y
means "some $x in X equals some $y in Y"
But when you do
name(X) = name(Y)
you are comparing two strings, not two node-sets. If X is a node-set, then
name(X) is the name of the first node in X, and name(Y) is the name of the
first node in Y. (In XSLT 2.0, with version="2.0", you would get an error
trying to apply name() to a node-set containing more than one node. The
change has been made to catch this common mistake.)
In 2.0 you can write
select="*[not(name() = preceding-sibling::*/name())]"
but of course it would be more efficient to use xsl:for-each-group.
Michael Kay
http://www.saxonica.com/
-----Original Message-----
From: Mukul Gandhi [mailto:gandhi(_dot_)mukul(_at_)gmail(_dot_)com]
Sent: 01 August 2005 07:57
To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject: [xsl] Grouping problem
I have the following XML file -
<?xml version="1.0" encoding="UTF-8"?>
<root>
<a>1</a>
<b>2</b>
<d>3</d>
<d>4</d>
<b>5</b>
<b>6</b>
<c>7</c>
<c>8</c>
<a>9</a>
</root>
I am trying to do grouping operation with the following XSL -
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>
<xsl:output method="xml" version="1.0" encoding="UTF-8"
indent="yes"/>
<xsl:template match="/root">
<groups>
<xsl:for-each select="*[not(name() =
name(preceding-sibling::*))]">
<group name="{name()}" />
</xsl:for-each>
</groups>
</xsl:template>
</xsl:stylesheet>
I am expecting output -
<groups>
<group name="a" />
<group name="b" />
<group name="c" />
<group name="d" />
</groups>
But I get output -
<?xml version="1.0" encoding="UTF-8"?>
<groups>
<group name="a"/>
<group name="b"/>
<group name="d"/>
<group name="d"/>
<group name="b"/>
<group name="b"/>
<group name="c"/>
<group name="c"/>
</groups>
Where is the problem?
This is tested with Xalan-J 2.6.0 and Saxon 8.4
Regards,
Mukul
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