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Re^4: XML::XSLT problem

by artist (Parson)
on Nov 17, 2006 at 15:43 UTC ( #584741=note: print w/ replies, xml ) Need Help??


in reply to Re^3: XML::XSLT problem
in thread XML::XSLT problem

Thanks, gellyfish.
When I used a different XSL file, I don't see this error and everything works fine. But, I still like to have my original XSL file working. I am not the author of XSL file.


--Artist


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Re^5: XML::XSLT problem
by gellyfish (Monsignor) on Nov 17, 2006 at 15:54 UTC

    Quite. But if it is a bug I will need to see the XSL to diagnose and fix it. From the location of the error it would appear that the problem is with the way either a <xsl:variable /> or <xsl:param /> is being dealt with but I'd still need to see the inputs to see what is really going on.

    /J\

      Interesting.. I found <fo> tags in my original XSL. Should they be processed in correctly with XSLT or should throw the error?

      Update: Actually, I <fo> tags works fine, but <xsl:variable> tag gives problem: Here is the sample code

      <xsl:variable name="TextFontSize">10</xsl:variable>
      On further investigation, I found that this tag works fine inside <xsl:template> but fails when you declare it globally, See Example 3.
      --Artist

        XML::XSLT should just ignore the fo stuff, though that isn't being tested.

        But yes you have uncovered a bug in a code path which wasn't being tested. Basically the problem is with an outer <xsl:variable /> declaration where there is a literal value (like you have there) rather than supplied with a value attribute. It needs to create a document fragment to store the results of evaluating the literal value and createDocumentFragment() needs to be called as a method of the XML::DOM::Document object, but as the top level variables are evaluated on the first parse of the XSL document there isn't an XML::DOM::Document yet :-(.

        The bottom line is that whilst your example above could quite happily be expressed as:

        <xsl:variable name="TextFontSize" value="10" />
        I can't promise a quick fix that does the right thing as surprisingly it's going to require quite a large change, You might want to check out the version in CVS but that cheats with the document fragment and elicits a warning from XML::DOM and also doesn't respect any XML in the variable value but YMMV. Caveat Emptor etc etc.

        But I have a test for this now so it will get fixed eventually

        Thanks for the bug report, sorry I can't help you straight away.

        /J\

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