[xsl] How to call an external Java function

Subject: [xsl] How to call an external Java function
From: "Ylvisaker, Steve" <steve.j.ylvisaker@xxxxxxxxxxxxx>
Date: Thu, 8 Jan 2009 13:42:06 -0600
I have a working Java function that uses FontMetrics to determine the length
in points of a given character stream. I am able to call the function from the
windows command line and it runs just as I expect. Now I  want to call that
same function from my XSL stylesheet and I can't seem to get the correct

I have set my classpath environment variable to include the path:

I have placed FontWidth.jar in folder c:\maps-jars

FontWidth is the Java class.

And I have run the following simple transformation with Saxon8:

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet  version="2.0"

    <xsl:template match="/">

        <xsl:variable name="testJava">
            <xsl:value-of select="med:labelStringWidth('Helvetica World', 12,
'This is test text')"/>

        <xsl:message>result:<xsl:value-of select="$testJava"/></xsl:message>



labelStringWidth is a method belonging to class FontWidth.

I have run this under <oxygen/> and stand alone from the command line with
Saxon8 and in both situations I receive the following error message:

Description: XPath syntax error at char 64 on line 11 in {...rld', 12, 'This
is test tex...}: Cannot find a matching 3-argument function named

Any help I can get on this would be very much appreciated.


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