public interface Function
NOTE: This class is not typically used directly, but is exposed for writers of extended XPath packages.
Implementations of Function
are functors
which are used to evaluate a function-call within an
XPath expression.
FunctionContext
Object call(Context context, List args) throws FunctionCallException
context
- the context at the point in the
expression when the function is calledargs
- arguments provided to the functionList
(node-set), Double
, Boolean
, or
String
FunctionCallException
- if an XPath error occurs during evaluation;
for instance, if the number or type of the arguments is incorrectCopyright © 2001-2015 Codehaus. All Rights Reserved.