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From "Martin Honnen (JIRA)" <xalan-...@xml.apache.org>
Subject [jira] Created: (XALANJ-2504) key function not working on trees that have been created by using exsl:node-set function on result tree fragment
Date Mon, 21 Sep 2009 14:36:16 GMT
key function not working on trees that have been created by using exsl:node-set function on
result tree fragment
----------------------------------------------------------------------------------------------------------------

                 Key: XALANJ-2504
                 URL: https://issues.apache.org/jira/browse/XALANJ-2504
             Project: XalanJ2
          Issue Type: Bug
      Security Level: No security risk; visible to anyone (Ordinary problems in Xalan projects.
 Anybody can view the issue.)
          Components: XSLTC
    Affects Versions: 2.7.1
         Environment: Windows XP Professional SP 3, Sun Java JRE 6 (1.6)
            Reporter: Martin Honnen


The key function is not working properly on trees that have been created by converting a result
tree fragment to a node-set with the extension function exsl:node-set. Instead of returning
the nodes with the passed in key value it looks as if an empty  node-set is returned.

Details:

With the XSLT stylesheet being

<xsl:stylesheet
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
  xmlns:exsl="http://exslt.org/common"
  exclude-result-prefixes="exsl"
  version="1.0">
  
  <xsl:output indent="yes"/>
  
  <xsl:key name="k1" match="foo" use="bar"/>
  
  <xsl:template match="/">
    <html lang="en">
      <head>
        <title>Test case</title>
      </head>
      <body>
        <h1>Test case</h1>
        <xsl:variable name="rtf1">
          <foo><bar>1</bar></foo>
          <foo><bar>1</bar></foo>
          <foo><bar>2</bar></foo>
        </xsl:variable>
        <p>The count should be 2.
          <xsl:for-each select="exsl:node-set($rtf1)">
            <xsl:variable name="c" select="count(key('k1', '1'))"/>
            Count returned is <xsl:value-of select="$c"/>.
            <xsl:choose>
              <xsl:when test="$c = 2">
                <xsl:text>Test succeeded.</xsl:text>
              </xsl:when>
              <xsl:otherwise><xsl:text>Test failed.</xsl:text></xsl:otherwise>
            </xsl:choose>
          </xsl:for-each>
        </p>
      </body>
    </html>
  </xsl:template>

</xsl:stylesheet>

the output (when run against any XML input) with Xalan interpreter of Saxon is as follows:

<html lang="en">
<head>
<META http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Test case</title>
</head>
<body>
<h1>Test case</h1>
<p>The count should be 2.

            Count returned is 2.
            Test succeeded.</p>
</body>
</html>

so the number of nodes returned by the call key('k1', '1') is 2 as it should be.

When I run with Xalan XSLTC then the output is

<html lang="en">
<head>
<META http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Test case</title>
</head>
<body>
<h1>Test case</h1>
<p>The count should be 2.

            Count returned is 0.
            Test failed.</p>
</body>
</html>

so the number of nodes returned by the call key('k1', '1') is 0 which is a bug.

This bug is quite a problem any time you want to use keys (e.g. with Muenchian grouping) on
temporary results created by converting a result tree fragment to a node-set with the help
of exsl:node-set.

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