root parameter use in stylesheet

[Alex Prilop]

Well, I have the following problem:

( I already posted it in the support, but got no answer and I get desperate as I need to finish a task...)

I ran into a foreach loop and need to access the whole xml tree in the stylesheet.
I found the parameter $root and can even print it out (so I see that I have the total information), but how do I form valid XPathes with this parameter, as I cannot reach the XML ancestor nodes with the regular expressions: (../child or /ancestor::child or /desc/child .....) nor with the use of the root parameter
Something as $root/child does not work neither /$root/child. ( I added a  <xsl:param name=root /> to the stylesheet and then I can access $root)

Somehow I seem to miss the point, and misunderstood the meaning of the parameter root.

Thanks in advance for the help

Alex

[Franck Wolff]

Hi,

Sorry, I wasn't monitoring this "Help" forum and maybe this is to late now...

Anyway, this little (and silly) example could help you:

persons.xml
---------------
<persons>
  <people good="true">
    <name>John Smith</name>
  </people>
  <people good="false">
    <name>Bonnie Parker</name>
    <name>Clide Barrow</name>
  </people>
</persons>

generate.xml
---------------
<project name="letters" default="letters">

  <taskdef name="ejen" classname="org.ejen.ant.Ejen"/>

  <target name="letters">
    <ejen stacktrace="true">

      <echo message="Reading persons.xml"/>
      <source uri="persons.xml"/>

      <foreach select="/table/people/name">
        <echo message="Saving {.}.txt"/>
        <template uri="letter.xsl" save="{.}.txt"/>
      </foreach>

    </ejen>
  </target>
</project>

letter.xsl
------------
<xsl:stylesheet
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
  version="1.0">

  <xsl:output method="text" encoding="iso-8859-1"/>
  <xsl:param name="root"/>

  <xsl:template match="name">
    1. <xsl:value-of select="../@good"/>
    2. <xsl:value-of select="$root//*[name=current()]/@good"/>
    3. <xsl:value-of select="$root//people[name=current()]/@good"/>
    4. <xsl:value-of select="$root/table/people[name=current()]/@good"/>
  </xsl:template>
</xsl:stylesheet>

1 gives no result (empty string). 2, 3 and 4 give the correct result ("true" for JS, "false" for BP and CB).

Regards,

Franck.