>What is the reflection you mention?
See a good Java book; reflection is a Java feature that allows programs to
query characteristics of the objects they are working with.
>I have already seen all the extension samples with no success;
>do you know of any sample that goes to the parameters of the extension?
Well, the 3-java-namespace example does so, though it's passing in
variables set to strings.
Don't forget that you can also look at the extensions which come built into
Xalan -- the org.apache.xalan.lib package, for example -- for more coding
examples. That's what I did when I wasn't sure how to read a nodelist
passed into an extension -- I went looking through that directory until I
found an extension which accepted one, then modelled my code on that. Seems
to be working...