[xsl] xsl:key multiple select

["Studio Codeworx" <studio@xxxxxxxxxxxxx>]

Hi,

for designing a navigation bar a loop walks through all category names
stored in a single document.
Inside Loop I'm using a key to ask a second document if the current
categoryname also exists as pagename.
if yes, the output is the categoryname formated as HREF. if no, a
dropdown-menu will created. this output works fine.

the problem
HREF needs the current page-id corresponding the category-id. id-node
"category" is the relation inside page document.

my solution
using a second key (pageid) requesting the id corresponding to node
'category' = $catid.
I think, concat() could make the criteria asking, but dont't know how to get
it work.

<xsl:variable name="dfile" select="document($datafile)"/> <xsl:key
name="pagename" match="siteinfo/pages/page/name" use="."/> <xsl:key
name="pageid" match="siteinfo/pages/page/id" use="concat(id, '+',
category)"/>


<xsl:for-each
select="document($categoryfile)//categories/category[visible!='off' and
id!=0 and member='off']">
	<xsl:variable name="catname" select="catname"/>
	<xsl:variable name="catid" select="id"/>


	<xsl:variable name="pagename" select="$dfile[key('pagename',
$catname)]"/>
	<xsl:variable name="pageid" select="$dfile[key('pageid', concat(id,
$catid))]"/>		

	<xsl:choose>
		<xsl:when test="$pagename">
			<xsl:if test="$pageid">
				,"<xsl:value-of select="pageid"
disable-output-escaping="yes"/><xsl:value-of select="$nbsp"
disable-output-escaping="yes"/><xsl:value-of select="$not"
disable-output-escaping="yes"/><xsl:value-of select="$nbsp"
disable-output-escaping="yes"/><xsl:value-of
select="$catname"/>","default.asp?id=<xsl:value-of
select="id"/>&amp;mnu=<xsl:value-of select="id"/>","","<xsl:value-of
select="$catname"/>",0
			</xsl:if>
		</xsl:when>
		<xsl:otherwise>					
			,"<xsl:value-of select="pageid"
disable-output-escaping="yes"/><xsl:value-of select="$nbsp"
disable-output-escaping="yes"/><xsl:value-of select="$not"
disable-output-escaping="yes"/><xsl:value-of select="$nbsp"
disable-output-escaping="yes"/><xsl:value-of
select="$catname"/><xsl:value-of select="$nbsp"
disable-output-escaping="yes"/>","show-menu=<xsl:value-of
select="$catname"/>",,"",1 		
		</xsl:otherwise>
	</xsl:choose>

</xsl:for-each>

the input

pages
- <siteinfo>
 + <data>
 + <editorsettings>
 + <pages>
    + <page>
        - <name>
            <![CDATA[SERVICE]]
           </name>
        - <category>
            <![CDATA[1]]        
       	  </category>                
     	</page>        	 
    + <page>
			.
			.
			.

categorys
- <categories>
  - <category>
    <id>
	  	<![CDATA[1]]
	  </id>
    <name>
	  	<![CDATA[SERVICE]]
	  </name>	  
		</category>		
		.
		.
		.

		  		     
would be appreciated for advises.

christian schlemmer

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