Re: doc() concat expression and whitespace error

On Nov 16, 2004, at 12:02 PM, Bruce D'Arcus wrote:

> > Can the former be made faster?
> The easiest way is instead of sending a single query for each 
> distinct-value of the "citekey" key, I somehow send a query that asks 
> for all of them at once.
> I'm not quite sure who to do that, though.  I know that I want a "for 
> $key in $keys return mods:mods[ID='$key']" sort of expression; I just 
> don't know how to do that with the key.
OK, we got it working so the stylesheets grab the entire collection of 
bibliographic records at once (sort of a PITA with the url escaping).  
With a bug fixed in eXist, it seems to be much faster than the earlier 
approach.
Does anyone have any feedback on if there is a better, more flexible, 
way to code this?  I'd like to make it easy for people to switch to 
different storage options (flat files and other sorts of url-queries in 
particular), probably even with a parameter option.
  <xsl:template match="db:bibliography" mode="create-bibcollection">
     <xsl:variable name="citekeys">
       <xsl:text>(</xsl:text>
       <xsl:for-each select="distinct-values(key('citekey', 'all'))">
         <xsl:if test="position() &gt; 1">,%20</xsl:if>
         <xsl:text>&apos;</xsl:text>
         <xsl:value-of select="."/>
         <xsl:text>&apos;</xsl:text>
       </xsl:for-each>
       <xsl:text>)</xsl:text>
     </xsl:variable>
  <!--+ ==============================================================
    | bibrecord variable identifies where to locate the bib records; in
    | this case, we access them via http from an eXist XML DB
    +-->
     <xsl:variable name="bibrecord"
        
select='doc(concat("http://localhost:8080/exist/servlet/db/biblio?";,
        
"_query=declare%20namespace%20mods=%22http://www.loc.gov/mods/v3%22;";,
        "%20for%20$citekey%20in%20",
        $citekeys,
        "%20return%20/mods:modsCollection/mods:mods[(_at_)ID=$citekey]"))' />
     <bibliography>
       <modsCollection xmlns="http://www.loc.gov/mods/v3";>
          <xsl:copy-of select="$bibrecord/exist:result/mods:mods" />
      </modsCollection>
    </bibliography>
  </xsl:template>

Bruce


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