Execute an XPath function object.
The function must return a valid object. Extension functions should override this version of execute(), rather than one of the other calls designed for a specific number of arguments, since the extension function mechanism will call this version first. Extension functions that accept more than three arguments _must_ override this version. -
Parameters:
-
executionContext
|
executing context |
context
|
current context node |
args
|
vector of pointers to XObject arguments |
locator
|
LocatorType instance for the XPath expression that contains the function call |
-
Returns:
-
pointer to the result XObject
Reimplemented from Function. |