Robert Koberg schrieb:
You could make a call with the document function (in a non-functional
way :) ) to a back end that uses a custom uri resolver that, when
receives a certain href, logs/writes the /real/ current-dateTime and
returns <nothing/>.

That would probably not work. I tested this the other day, just out of
curiosity, calling a script that incremented a number, and found that
the result was cached when using LibXSLT, Saxon and Xalan.

mludwig@forelle:~/Werkstatt/xsl > expand -t2 ~/www/xml.php
<?php
$fnam = 'xml.php.dat';
if (file_exists($fnam)) {
  $i = file_get_contents($fnam);
  file_put_contents($fnam, $i + 1);
}
else {
  $i = 0;
  file_put_contents($fnam, $i);
}
echo "<Int>$i</Int>\n";

mludwig@forelle:~/Werkstatt/xsl > expand -t2 document-function-en.xsl

<?xml version="1.0" encoding="UTF-8"?>

<xsl:transform version="1.0"

  xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

  <xsl:output indent="yes"/>

  <xsl:variable name="url" select="'http://localhost/mlu/xml.php'"/>

  <xsl:template match="/">

    <Urmel>

      <Prozessor>

        <xsl:value-of select="system-property('xsl:vendor')"/>

      </Prozessor>

      <Frage> Is the result of the call to document() cached? </Frage>

      <xsl:copy-of select="document($url)"/>

      <xsl:copy-of select="document($url)"/>

      <xsl:copy-of select="document($url)"/>

      <Antwort> Yes, it is. LibXSLT, Xalan and Saxon cache the 
result.</Antwort>

    </Urmel>

  </xsl:template>

</xsl:transform>



mludwig@forelle:~/Werkstatt/xsl > xsltproc document-function-en.xsl 
urmel.xml

<?xml version="1.0"?>

<Urmel>

  <Prozessor>libxslt</Prozessor>

  <Frage> Is the result of the call to document() cached? </Frage>

  <Int>52</Int>

  <Int>52</Int>

  <Int>52</Int>

  <Antwort> Yes, it is. LibXSLT, Xalan and Saxon cache the 
result.</Antwort>

</Urmel>



Michael