I am not a Java programmer, but I would like to use an extension to check for
the existence of an image file referenced by an XML file (as I believe that is
the only way to check for the existence of a non-XML file). This topic has been
discussed a lot on various aliases, and despite my best efforts, I'm unable to
unravel the mystery.
I've included what I believe to be relevant information.
Error Message:
--------------
Error at xsl:value-of on line 15 column 48 of nxs-test-image-exists.xsl:
XPST0017: XPath syntax error at char 20 on line 15 in {nxs:fileExist(@osrc)}:
Cannot find a matching 1-argument function named {java:FileExist}fileExist()
Failed to compile stylesheet. 1 error detected.
Saxon-B 9.1.7 J stored in xmlsrc/xTools/saxon9.
-----------------------------------------------
Java program (compiled and the FileExist.class file stored in
xmlsrc/xTools/saxon9/classes)
/* Source: http://p2p.wrox.com/xslt/71563-xslt-check-if-directory-exist.html */
import java.io.File;
public class FileExist {
private static boolean exist;
public static boolean fileExist(String myfile) {
exist = new File(myfile).exists();
return exist;
}
}
XML Snippet for img element
---------------------------
...
<img osrc="../../images/1982.jpg" />
...
XSLT
------
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="2.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:nxs="java:FileExist">
<xsl:output method="xml"/>
<xsl:template match="/">
<xsl:apply-templates />
</xsl:template>
<xsl:template match="img">
<xsl:value-of select="nxs:fileExist(@osrc)" />
</xsl:template>
</xsl:stylesheet>
Korn Shell script/command line call:
------------------------------------
# define saxon command line
saxon="java -classpath xTools/saxon9/classes; -jar -Xmx1G
xTools/saxon9/saxon9.jar -tree:tiny -dtd:off -ext:on "
# call transform
$saxon deliverables/help/helpFile.xml xslt/nxs-test-image-exists.xsl >
imageerror.xml
Thank you for any insights you might offer.
Blaine
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