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[xsl] XSLT/Java does not identify an external Java class

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Hi,

I am having difficulty getting an example working from the book 'XSLT
cookbook' by Sal Mangano, recipe 12.3 (page 542).
I receive the following error for the SVG bounding box example on running
"c:\my path...\saxon textWidthTest.xml textWidthTest.xslt > output.svg" at
the CMD line:
Error at xsl:value-of on line 17 of file:/c:/my path/textwidthtest.xslt:
  The URI xalan://com.ora.xsltckbk.util.SVGFontMetrics does not identify an
external Java class
Transformation failed: Run-time errors were reported

Here is the XLST and java file used:

XSLT file
------------------------------

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:xalan="http://xml.apache.org/xslt"
xmlns:font="xalan://com.ora.xsltckbk.util.SVGFontMetrics"
exclude-result-prefixes="font xalan">

<xsl:output method="xml"/>

<xsl:template match="/">
  <svg width="100%" height="100%">
    <xsl:apply-templates/>
   </svg>
</xsl:template>


<xsl:template match="text">
  <xsl:variable name="fontMetrics" select="font:new(@font, @size,
boolean(@weight), boolean(@stytle))"/>
  <xsl:variable name="text" select="."/>
  <xsl:variable name="width" select="font:stringWidth($fontMetrics,
$text)"/>
  <xsl:variable name="height" select="font:stringHeight($fontMetrics,
$text)"/>
  <xsl:variable name="style">
    <xsl:if test="@style">
      <xsl:value-of select="concat('font-style:',@style)"/>
    </xsl:if>
  </xsl:variable>
  <xsl:variable name="weight">
    <xsl:if test="@weight">
      <xsl:value-of select="concat('font-weight:',@weight)"/>
    </xsl:if>
  </xsl:variable>
  <g style="font-family:{@font};font-size:{@size};{$style};{$weight}">
    <!-- Use the SVGFontMetrics info render a rectangle that is -->
    <!-- slightly bigger than the expected size of the text -->
    <!-- Adjust the y position based on the previous text size. -->
    <rect x="10"
          y="{sum(preceding-sibling::text/@size) * 2}pt"
          width="{$width + 2}"
          height="{$height + 2}"
          style="fill:none;stroke: black;stroke-width:0.5;"/>
    <!-- Render the text so it is cenetered in the rectangle -->
    <text x="11" y="{sum(preceding-sibling::text/@size) * 2 + @size div 2 +
2}pt">
      <xsl:value-of select="."/>
    </text>
  </g>

</xsl:template>


</xsl:stylesheet>




Java class in package (xsltckbk.jar)
-----------------------------------------------

package com.ora.xsltckbk.util ;
import java.awt.* ;
import java.awt.geom.* ;
import java.awt.font.* ;
import java.awt.image.*;

public class SVGFontMetrics
{
  public SVGFontMetrics(String fontName, int size)
  {
    m_font = new Font(fontName, Font.PLAIN, size) ;
    BufferedImage bi
        = new BufferedImage(1, 1, BufferedImage.TYPE_INT_ARGB);
    m_graphics2D = bi.createGraphics() ;
  }

  public SVGFontMetrics(String fontName, int size, boolean bold, boolean
italic)
  {
    m_font = new Font(fontName, style(bold,italic) , size) ;
    BufferedImage bi
        = new BufferedImage(1, 1, BufferedImage.TYPE_INT_ARGB);
    m_graphics2D = bi.createGraphics() ;
  }

  public double stringWidth(String str)
  {
    FontRenderContext frc = m_graphics2D.getFontRenderContext();
    TextLayout layout = new TextLayout(str, m_font, frc);
    Rectangle2D rect = layout.getBounds() ;
    return rect.getWidth() ;
  }

  public double stringHeight(String str)
  {
    FontRenderContext frc = m_graphics2D.getFontRenderContext();
    TextLayout layout = new TextLayout(str, m_font, frc);
    Rectangle2D rect = layout.getBounds() ;
    return rect.getHeight() ;
  }

  static private int style(boolean bold, boolean italic)
  {
    int style = Font.PLAIN ;
    if (bold) { style |= Font.BOLD;}
    if (italic) { style |= Font.ITALIC;}
    return style ;
  }

  private Font m_font = null ;
  private Graphics2D m_graphics2D = null;
}




I have searched the http://www.mulberrytech.com/xsl/xsl-list archives, and
numerous other sites for the answer, edited the classpath to include
"xsltckbk.jar" but to no avail.

Any help appreciated.



Linc



 XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list

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