[XOM-interest] Brief question regarding using Nux and XSL TransformPooling

Michael Kay mike at saxonica.com
Fri Mar 26 13:55:13 EDT 2010


I don't know the answer I'm afraid - haven't heard anything from Wolfgang
for a while. But the "NoSuchMethodError" tends to suggest that A is calling
B, and A was compiled with a different version of B from the one available
at run-time.

I think Nux makes some fairly low-level of Saxon interfaces, so it would be
a mistake to assume it will work with a later version of Saxon than the one
it was compiled against.


> 
> First and foremost, the link to the binary (or the source) 
> doesn't seem to be working for me :(
> 
> http://acs.lbl.gov/software/nux/nux-download/

Me neither. This is the great benefit of publishing somewhere like
SourceForge - it's rather more likely to stay around (though nothing is
certain, of course).

I found an unzipped copy on my disk, I've zipped it up and uploaded it to

http://www.saxonica.com/download/nux.rar

I'm afraid I have no idea what state this is in, whether it's the latest
version, complete, etc: but it does include source, and if you want to try
and rebuild from it, you're welcome (as far as I'm concerned, anyway!).

Regards,

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


> 
> I eventually managed to find a jar elsewhere 
> (http://ftp.freepark.org/pub/freebsd/ports/i386/packages-7.2-r
> elease/java/) although none of the sources were available for 
> the project.  Would anyone on this list know whether they are 
> likely to be made available again?
> 
> >From looking at the Nux 1.6 JavaDoc api, I put a fairly 
> simple transform to the test to see whether it would work, so 
> I've got something like this:
> 
>         System.setProperty("javax.xml.transform.TransformerFactory",
>                 "net.sf.saxon.TransformerFactoryImpl");
> 
>         XSLTransform trans = XSLTransformPool.GLOBAL_POOL
>                 .getTransform(new File("xsl.xsl"));
>         Document doc = 
> BuilderPool.GLOBAL_POOL.getBuilder(false).build(
>                 new File("xml.xml"));
>         Nodes nodes = trans.transform(doc);
>         for (int i = 0; i < nodes.size(); i++) {
>             System.out.println("node " + i + ": " + 
> nodes.get(i).toXML());
>         }
> 
> Which yields something like this:
> 
> Exception in thread "main" java.lang.NoSuchMethodError: 
> nu.xom.xslt.XSLTransform.<init>(Lnu/xom/Document;Lnu/xom/NodeF
> actory;Ljavax/xml/transform/TransformerFactory;)V
>     at 
> nux.xom.pool.XSLTransformFactory.newTransform(XSLTransformFact
> ory.java:220)
>     at 
> nux.xom.pool.XSLTransformFactory.createTransform(XSLTransformF
> actory.java:163)
>     at 
> nux.xom.pool.XSLTransformFactory.createTransform(XSLTransformF
> actory.java:180)
>     at 
> nux.xom.pool.XSLTransformPool.getTransform(XSLTransformPool.java:170)
>     at com.TestXsLTransformPool.main(TestXsLTransformPool.java:34)
> 
> As I don't have access to the source, I'm not really able to 
> pinpoint with any detail where things are going wrong so I 
> was wondering whether anyone had used the TransformPool 
> successfully in a recent project and whether they could offer 
> me some pointers?
> 
> I'm using the latest versions of xom and saxon although I've 
> noticed that Nux hasn't been under development for a while 
> (version 1.6 was released back in June 2006).  I'm wondering 
> whether the project was still under development and secondly, 
> if it isn't - does anyone know a good way to pool 
> transformers instead?  Is this something that xom does now?
> 
> Thanks very much in advance.
> A
> 
> 
> 
>       
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