Access current node in XPathFunction implementation

Question

Hello,
When implementing an XPathFunction, is there a way to access current node?
For example,
"//*[local-name()='test123']"
in the above example, the built-in function, local-name, take current node as its argument.
However, from the API of XPathFunction:
public Object evaluate(List args) throws XPathFunctionException
It is not apparent how to access the current node.
I've tried:
"//*[myFunction()=1]"
the input arg length is zero.
Looking forward to any suggestions!
Thanks!

Answer 1

Thanks for the reply.
Allow me to further clarify my problem with the following example:
//*[local-name()='foo']/*[local-name()='bar']As shown in the above example, in the second call to the "local-name" function, the implementation
of the function should unavoidably require the reference of currently navigated xml node (a "foo" node in
the above example).
However, it does not seem obvious how to achieve the same functionality with XPathFunction interface.
So, what is the proper strategy if we want to implement our customized local-name-like functions?
Thanks!
Looking forward to suggestions.