In 2.0 you want distinct-values(for $c in target:row return
tokenize(@Category, '-')).
In 1.0 it's much harder. You certainly can't solve it the way you are
trying, because that involves a mutable variable. I would suggest a
two-phase solution: first to the tokenizing, using something like the EXSLT
str:tokenize() function or template, then do the duplicates elimination
using Muenchian grouping.
Michael Kay
http://www.saxonica.com/
-----Original Message-----
From: cruscio(_at_)libero(_dot_)it [mailto:cruscio(_at_)libero(_dot_)it]
Sent: 07 December 2006 14:01
To: xsl-list
Subject: [xsl] Split and Found unique values
Hi,
I have an XML like this:
<target:row Category='A-B-C-D'/>
<target:row Category='A-B'/>
<target:row Category='A-C-D'/>
<target:row Category='C'/>
<target:row Category='B-C-D'/>
<target:row Category='A'/>
with a combination of values separated by '-'. I need to
populate a listbox with unique values:
A
B
C
D
I tried to save in a variable what was already processed and
skip it in case was found but the 'seen' variable is clean'd
up at the second round:
<xsl:key name='Category' match='xml/target' use='@Category'/>
<xsl:variable name='seen' select="''"/>
<xsl:template name="my_templ_1">
<SELECT NAME="X" MULTIPLE="MULTIPLE">
<xsl:for-each select='$Rowset[generate-id()
= generate-id(key("Category", @Category))]'>
<xsl:call-template name="Split">
<xsl:with-param name="strInput"
select="@Category"/>
</xsl:call-template>
</xsl:for-each>
</SELECT>
</xsl:template>
<xsl:template name="Split">
<xsl:param name="strInput"/>
<xsl:param name="strDelimiter" select="'-'"/>
<xsl:param name="processed"/>
<xsl:variable name="strNextItem"
select="substring-before($strInput,$strDelimiter)"/>
<xsl:variable name="strOutput"
select="substring-after($strInput,$strDelimiter)"/>
<xsl:variable name="seen"
select="concat($strNextItem,',',$processed)"/>
<xsl:choose>
<xsl:when test='contains($strInput,$strDelimiter) and
not(contains($strInput,$seen))'>
<xsl:element name='OPTION'>
<xsl:value-of select="$strNextItem"/>
</xsl:element>
<xsl:call-template name="Split">
<xsl:with-param name="strInput" select="$strOutput"/>
<xsl:with-param name="strDelimiter" select="$strDelimiter"/>
<xsl:with-param name="processed" select="$seen"/>
</xsl:call-template>
</xsl:when>
<xsl:otherwise>
<xsl:if test="not(contains($strInput,$seen))">
<xsl:element name='OPTION'>
<xsl:value-of select="$strInput"/>
</xsl:element>
</xsl:if>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
Do you have a more elegant way?
Thank you.
Carlos
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