Adding an XPath Function in Xalan 2.7.0 2006-05-29 - By Brian Minchau
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: minchau@(protected)
Jeroen Bulters
<jbulters@(protected)
.uva.nl> To
xalan-j-users@(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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