Subject: RE: Accessing External Java Library
From: "Michael Kay" <mike@xxxxxxxxxxxx>
Date: Thu, 1 Nov 2007 15:48:58 -0000
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> java -jar saxon8.jar
Well, the first thing on my list of possible causes was that the class isn't
on the classpath, and I also mentioned that a common cause of that is
running with the -jar option which means there isn't a classpath.
You need to use "java -cp ..... net.sf.saxon.Transform ...
Michael Kay
http://www.saxonica.com/
> -----Original Message-----
> From: Carl Bourne [mailto:cbourne@xxxxxxxxxxxxxxx]
> Sent: 01 November 2007 14:44
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: RE: Accessing External Java Library
>
> OK - This is what I have now!
>
> From the output I can see that the iPGP.iPGP class could not
> be loaded bit don't understand why!!!
>
> The iPGP.jar file is in the same directory as the saxon8.jar
> and the xml, xslt files.
>
> XML:
>
> <dataelements>
> <dataelement>
> <data>New York</data>
> </dataelement>
> <dataelement>
> <data>Boston</data>
> </dataelement>
> <dataelement>
> <data>Denver</data>
> </dataelement>
> </dataelements>
>
> XSLT:
>
> <?xml version="1.0" ?>
> <xsl:stylesheet version="2.0"
> xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
> xmlns:PGP="iPGP.iPGP"
> exclude-result-prefixes="PGP">
>
> <xsl:template match="dataelements">
> <xsl:value-of select="PGP:setArmor(true()),
> PGP:setConventional(true()),
> PGP:setInputIsText(true()),
> PGP:setOutputIsText(true())"/>
>
> <xsl:param name="passphrase">mypswd</xsl:param>
> <xsl:param name="asciiresult"></xsl:param>
> <xsl:param name="errormessage"></xsl:param>
>
> <xsl:variable name="datain" select="data"/>
> <xsl:variable name="encryptData"
> select="PGP:encrypt($passphrase, $datain, $asciiresult,
> $errormessage)"/>
> <xsl:value-of select="$encryptData"/> </xsl:template>
> </xsl:stylesheet>
>
> Output:
>
> C:\Documents and Settings\cbourne\My Documents\PGPJava>java
> -jar saxon8.jar -TJ pgp.xml pgp.xslt Loading iPGP.iPGP No
> Java class iPGP.iPGP could be loaded Error at xsl:value-of on
> line 11 of file:/C:/Documents%20and%20Settings/cbourne/
> My%20Documents/PGPJava/pgp.xslt:
> XPST0003: XPath syntax error at char 20 on line 11 in
> {...ue()), PGP:setConven
> tional}:
> Cannot find a matching 1-argument function named
> {iPGP.iPGP}setArmor()
> Loading iPGP.iPGP
> No Java class iPGP.iPGP could be loaded
> Error at xsl:variable on line 18 of
> file:/C:/Documents%20and%20Settings/cbourne/
> My%20Documents/PGPJava/pgp.xslt:
> XPST0003: XPath syntax error at char 62 on line 18 in {...,
> $asciiresult, $err
> ormessa...}:
> Cannot find a matching 4-argument function named
> {iPGP.iPGP}encrypt()
> Error at xsl:param on line 13 of
> file:/C:/Documents%20and%20Settings/cbourne/My%
> 20Documents/PGPJava/pgp.xslt:
> XTSE0010: xsl:param must be the first element within a
> template or function Error at xsl:param on line 14 of
> file:/C:/Documents%20and%20Settings/cbourne/My%
> 20Documents/PGPJava/pgp.xslt:
> XTSE0010: xsl:param must be the first element within a
> template or function Error at xsl:param on line 15 of
> file:/C:/Documents%20and%20Settings/cbourne/My%
> 20Documents/PGPJava/pgp.xslt:
> XTSE0010: xsl:param must be the first element within a
> template or function Failed to compile stylesheet. 5 errors detected.
>
>
>
>
> Carl Bourne
> Intellect
> DDI: +44 1491 842502
> M: +44 7770 284294
>
>
>
>
>
> -----Original Message-----
> From: Michael Kay [mailto:mike@xxxxxxxxxxxx]
> Sent: 01 November 2007 12:59
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: RE: Accessing External Java Library
>
> >
> > Before calling the external Java library I need to set some
> > attributes, e.g.
> >
> > pgp.setArmor(true)
> > pgp.setConventional(true)
> > pgp.setInputIsText(true)
> > pgp.setOutputIsText(true)
> >
> > Is it possible to do this within the style sheet?
>
> Yes, if you're careful. The problem is that these methods
> don't generate any output, so there's a risk that they can
> get optimized away (or called in the wrong order). The trick
> is to use them as if they were returning something, and that
> something were written to your result tree, for example
>
> <out>
> <xsl:value-of select="PGP:setArmor(true()),
> PGP:setConventional(true()),
> PGP: ...etc"/>
> >
> > Also the XSLT programmers reverence seems to imply that only static
> > types are supported - is this the case?
> >
> No. The behaviour of extension functions varies from product
> to product and release to release. The documentation for
> Saxon 8.9 is at
>
> http://www.saxonica.com/documentation/extensibility/functions.html
>
> Michael Kay
> http://www.saxonica.com/
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