javax.xml.xpath
Interface XPathFunction
public interface XPathFunction
XPathFunction
provides access to XPath functions.
Functions are identified by QName and arity in XPath.
$Revision: 226183 $, $Date: 2005-04-08 12:39:14 +0200 (Fri, 08 Apr 2005) $ Object | evaluate(List args) - Evaluate the function with the specified arguments.
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evaluate
public Object evaluate(List args)
throws XPathFunctionException
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.
args
- The arguments, null
is a valid value.
- The result of evaluating the
XPath
function as an Object
.