RE: Xalan bug: key( ) clears variable

[Bederov, Sergey]

Hello,
Sorry, I didn't know that the JRE Xalan and the official Xalan are different 
things. Looking at the source code, the JRE version indeed appears outdated.
The test data I provided originally reproduces the bug in the JRE Xalan. For 
some reason their version ignores the "plmxml" prefix and allows to call "key" 
on a non-existent key name. I downloaded the official Xalan 2.7.2 and updated 
the XSLT file. Now it is as follows:

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"; 
xmlns:str="http://exslt.org/strings"; xmlns:exslt="http://exslt.org/common";>
  <xsl:key name="keyname" match="Foo" use="@id"/>
  <xsl:template match="Root">
    <xsl:variable name="created">
      <Created/>
    </xsl:variable>
    <xsl:apply-templates select="exslt:node-set($created)">
      <xsl:with-param name="prm" select="@attr"/>
    </xsl:apply-templates>
  </xsl:template>
  <xsl:template match="Created">
    <xsl:param name="prm"/>
    <Output>
      <Display>
        <xsl:value-of select="$prm"/>
      </Display>
      <Usage>
        <xsl:value-of select="key('keyname',$prm)"/>
      </Usage>
      <Display>
        <xsl:value-of select="$prm"/>
      </Display>
    </Output>
  </xsl:template>
</xsl:stylesheet>

In the official Xalan 2.7.2 it works even worse than in JRE: both "Display" 
elements are empty. Looks like the parameter is not being passed to the 
template. This might be connected to the fact that "created" is not a node-set 
but a result-tree-fragment. But anyway, how should I pass the parameter in this 
case?
In Saxon the example works fine: both "Display" elements contain the correct 
value "foo".

JRE Xalan:

<Output xmlns:exslt="http://exslt.org/common"; 
xmlns:str="http://exslt.org/strings";>
  <Display>foo</Display>
  <Usage/>
  <Display/>
</Output>

Xalan 2.7.2:

<Output xmlns:exslt="http://exslt.org/common"; 
xmlns:str="http://exslt.org/strings";>
  <Display/>
  <Usage/>
  <Display/>
</Output>

Saxon HE 11:

<Output xmlns:exslt="http://exslt.org/common"; 
xmlns:str="http://exslt.org/strings";>
  <Display>foo</Display>
  <Usage/>
  <Display>foo</Display>
</Output>

Sergey Bederov
Senior Developer
Cortona3D
www.cortona3D.com<http://www.cortona3d.com/>