RE: [xsl] Navigation / node-set

["Michael Kay" <mike@xxxxxxxxxxxx>]

You basically need to collapse the "matching" condition into a predicate so
you can say

<xsl:for-each select="preceding-sibling::*[PRED][1]">

That's easy in XSLT 2.0 where you can put your code into a function and call
the function from your predicate:

<xsl:for-each select="preceding-sibling::*[f:matching(.)][1]"> 

<xsl:function name="f:matching" as="xs:boolean">
  <xsl:param name="node" as="node()"/>
       <xsl:variable name="wx">
        <xsl:if test="contains(substring(kbase/title, 1, 2),$witem)">
            <xsl:value-of select="(@id)"/>
         </xsl:if>
        </xsl:variable>
       <xsl:sequence select="string-length($wx) > 0">
</xsl:function>

But in fact this can all be collapsed into a simple XPath expression anyway:

<xsl:for-each select="preceding-sibling::*[contains(substring(kbase/title,
1, 2),$witem) and string-length(@id)>0][1]">

You might not need the (string-length(@id)>0) part of the condition.

Also I strongly suspect that contains(substring(kbase/title, 1, 2),$witem)
can be rewritten

substring(kbase/title, 1, 2) = $witem

or possibly even

starts-with(kbase/title, $witem)

Michael Kay
http://www.saxonica.com/ 




> -----Original Message-----
> From: nenad@xxxxxxxxxxxxxxx [mailto:nenad@xxxxxxxxxxxxxxx] 
> Sent: 14 May 2008 18:07
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: [xsl] Navigation / node-set
> 
> Hi, my problem is that with this code
> instead of displaying the first matching preceding-sibling I 
> display all of them that precede.
> How I can diplay just the first matching preceding-sibling?
> Thanks
> 
> 
> 
> <xsl:template name="randomsearch">
>     <xsl:variable name="selcat" select="$SelectCategories"/>
>     <xsl:variable name="selran" select="$SearchedString"/>
>     <xsl:variable name="filart" select="$FilterArticles"/>
>     <xsl:variable name="showsingle" select="$ShowSingleTechno"/>
> 
> 
>       <xsl:variable name="witem">
> 
>         <xsl:for-each select="(./kbase//title)">
>           <xsl:value-of select="substring(., 1,  
> 2)"/></xsl:for-each></xsl:variable>
> 
> 
> 
>     <xsl:for-each select="preceding-sibling::*">
>       <xsl:variable name="wx">
>         <!--<xsl:value-of select="substring(kbase/title, 1, 2)"/>;;-->
> 
>         <xsl:if test="contains(substring(kbase/title, 1, 2),$witem)">
>           <!--<xsl:if test="position() != last() ">-->
>           <xsl:value-of select="(@id)"/>
>         </xsl:if>
>         <!--</xsl:if>-->
>         <!---->
>       </xsl:variable>
> 
> 
>       <xsl:if test="string-length($wx) > 0">
>         <!-- <xsl:if test="position()=1">-->
>         <b>
>           <i>
>             <a>
>               <xsl:attribute name="href">
>                 http://localhost:1313/?ShowSingleTechno=<xsl:value-of
>  select="$wx"/>&amp;SelectCategories=<xsl:value-of
>  select="$selcat"/>&amp;SearchedString=<xsl:value-of
>  select="$selran"/>&amp;FilterArticles=<xsl:value-of 
> select="$filart"/>
>               </xsl:attribute>PREVIOUS
>             </a>
>            
>           </i>
>         </b>
>       </xsl:if>
>     </xsl:for-each>