I should have mentioned that I am using XPath only (no XSLT was harmed
:-) )
When using Saxon 8.8 the return value is a List of Strings so there is
no more information about the nodes.
After taking the original expression for identity and tweaking it I
found this:
$arg[empty(index-of(distinct-values(subsequence($arg, 1, position()-1)),
text()))]
to work when "arg = //myElement".
Strangely replacing the variable "arg" with the expression such as
//myElement[empty(index-of(distinct-values(subsequence(//myElement, 1,
position()-1)), text()))]
doesn't show the expected results.
After some more digging I found the much simpler
//myElement[not(preceding::myElement = .)]
to work too but being easier to remember.
Mukul Gandhi wrote:
You can use XSLT 2.0 distinct-values function.
The sample stylesheet is below:
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="2.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>
<xsl:output method="xml" indent="yes" />
<xsl:template match="/">
<output>
<xsl:for-each select="distinct-values(//myElement)">
<myElement><xsl:value-of select="." /></myElement>
</xsl:for-each>
</output>
</xsl:template>
</xsl:stylesheet>
On 10/11/06, Victor Toni <xsl-list(_at_)vitoni(_dot_)de> wrote:
I would like to retrieve only the distinct nodes (by value) from a
"//myElement"-like expression; <myElement> is either empty or contains
only text.
From this document
<a>
<myElement>aaa</myElement>
<b>
<myElement>aaa</myElement>
<myElement>xyz</myElement>
<myElement>efg</myElement>
</b>
<c>
<d>
<myElement>khl</myElement>
<myElement>xyz</myElement>
</d>
</c>
</a>
the result should be (the order doesn't matter)
<myElement>aaa</myElement>
<myElement>xyz</myElement>
<myElement>efg</myElement>
<myElement>khl</myElement>
In early XPath "Working Draft"s there seems to have been a function
called "distinct-nodes()" which should have done something similar but
it used the identity of the nodes.
This document still shows the function
http://www.w3.org/TR/2003/WD-xpath-functions-20030502/#func-distinct-nodes
and it was removed in
http://www.w3.org/TR/2003/WD-xpath-functions-20031112/
A replacement for this function found in
http://www.w3.org/TR/2005/WD-xpath-functions-20050404/#func-distinct-nodes-stable
basically tells that
//myElement[empty(subsequence(//myElement, 1, position()-1) intersect
.)]
should work to select distinct nodes (by identity).
But I haven't been able to find a solution for distinct nodes by value.
Any suggestions?
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