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RE: Saxon: java extension functions

Subject: RE: Saxon: java extension functions
From: "Michael Kay" <mike@xxxxxxxxxxxx>
Date: Tue, 15 Feb 2005 16:48:33 -0000
saxon java extension
The message means that it's looking for a class called MyClass and can't
load one. If the class really is called MyClass, then changing the URI isn't
going to help.


With exactly the same classpath, try

javap MyClass

from the command line.

Some reasons that such problems occur:

- the class is in a package
- the class isn't on the classpath
- the class isn't public

Try also giving the class a public default constructor. I don't think that
should make any difference, but it could.

Michael Kay
http://www.saxonica.com/
 

> -----Original Message-----
> From: Richard Lewis [mailto:richardlewis@xxxxxxxxxxxxxx] 
> Sent: 15 February 2005 16:21
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject:  Saxon: java extension functions
> 
> Hello List,
> 
> This is a Saxon question:
> 
> I'm using Saxon 8.2B and I'm trying to add an extension 
> class, MyClass.
> 
> <xsl:stylesheet version="2.0" ...
>     xmlns:my="java:MyClass">
> 
> and create an instance of it:
> 
> <xsl:variable name="myClass" select="my:new($parameter)" />
> 
> and then call an instance function:
> 
> <xsl:variable name="x" select="my:getX($myClass, $parameter)" />
> 
> But, running Saxon with the -TJ options, I get "No Java class MyClass
> could be loaded". I've tried every namespace I could think of
> ("java://MyClass", "MyClass", "java:/usr/share/java/MyClass",
> "MyClass.class", etc.) but none of them work. The class is in the
> classpath (I even tried compiling and running a little Java program
> using it and that worked).
> 
> Any ideas what I've done wrong?
> 
> Cheers,
> Richard

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