xalan extension functions

[Blue Doze]

Hello,

I'm trying to add XPATH extension function to xalan-j with namespace,
I'm doing that using the following code:

Function func = (Function) class.newInstance();
int findex = FunctionTable.installFunction(name, func);

FuncLoader[] m_functions = FunctionTable.m_functions;
m_functions[findex] = new FuncEntry(class.getName(), findex);

I can define and use extension functions that doesn't have namespace,
but when I add the namespace in the XPATH expression, it doesn't work.



I tried to extend both Function2Args, and FuncExtFunction, and I had
no luck in both.
when I extended FuncExtFunction I called the super constructor with
the namespace i want.

Any hints?


BlueDoze

 

[Joe Kesselman]

It's hard to debug this without seeing your actual code for the
transformation and for the function installation, the actual
stylesheet... and having a better description of the problem than "it
doesn't work."

I presume you've already scoped out
http://xml.apache.org/xalan-j/extensions.html
and followed the steps therein.

I presume you've also looked at existing examples of namespaced extensions.

If not, those are where to start...

 

[Blue Doze]

It's hard to debug this without seeing your actual code for the
transformation and for the function installation, the actual
stylesheet... and having a better description of the problem than "it
doesn't work."

I don't do transformation, I have XML document and just evaluate some
XPath expressions at run time. those XPath expression have some
extension functions

 

[Joe Kesselman]

I don't do transformation, I have XML document and just evaluate some
XPath expressions at run time.

OK. We still need a better view of what you're actually doing and what
happens when you do it. Free support doesn't come with mindreading services.

The best place to ask Xalan-specific questions would of course be
Xalan's own mailing list, but if you provide enough detail to diagnose
I'll take a look at it.