public interface XPathFunction
XPathFunction
provides access to XPath functions.
Functions are identified by QName and arity in XPath.
- Since:
- 1.5
-
Method Summary
-
Method Details
-
evaluate
Evaluate the function with the specified arguments.
To the greatest extent possible, side-effects should be avoided in the definition of extension functions. The implementation evaluating an XPath expression is under no obligation to call extension functions in any particular order or any particular number of times.
- Parameters:
args
- The arguments,null
is a valid value.- Returns:
- The result of evaluating the
XPath
function as anObject
. - Throws:
XPathFunctionException
- Ifargs
cannot be evaluated with thisXPath
function.
-