Jeroen,
although the method org.apache.xpath.compiler.Functiontable.installFunction
(String name, Class func) has an array with the name m_functions_customer,
I don't think this is a public API. It may be public in the Java sense, but
that is probably due to it being using in a different package.

That said, from what I can see from another method in Functiontable used
later on to retrieve the XPath functions, that the Class passed in must
directly or indirectly extend org.apache.xpath.functions.Function:

Function getFunction(int which)
          throws javax.xml.transform.TransformerException
  {
          try{
              if (which < NUM_BUILT_IN_FUNCS)
                  return (Function) m_functions[which].newInstance();
              else
                  return (Function) m_functions_customer[
                      which-NUM_BUILT_IN_FUNCS].newInstance();
          }catch (IllegalAccessException ex){
                  throw new TransformerException(ex.getMessage());
          }catch (InstantiationException ex){
                  throw new TransformerException(ex.getMessage());
          }
  }

Is your class extending org.apache.xpath.functions.Function?

- Brian
- - - - - - - - - - - - - - - - - - - -
Brian Minchau
XSLT Development, IBM Toronto
e-mail:        [EMAIL PROTECTED]




                                                                           
             Jeroen Bulters                                                
             <[EMAIL PROTECTED]                                             
             .uva.nl>                                                   To 
                                       [email protected]        
             05/19/2006 03:24                                           cc 
             AM                                                            
                                                                   Subject 
                                       Adding an XPath Function in Xalan   
                                       2.7.0                               
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           




Hi,

I'm trying to add an XPath function to Xalan 2.7.0. The function itself
compiled without any problems but using
org.apache.xpath.compiler.Functiontable.installFunction yields errors I
can't come by.

Is the installFunction usable at the moment and if so, can anyone please
supply me with a small example of the call?

Thanks in advance.

Jeroen Bulters
Informatics Institute, University of Amsterdam
Kruislaan 403, 1098SJ Amsterdam
M:+31 6 2908 6006


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