Name
function-available — Returns true if XPATH extension function with the requested name is defined in the XPATH Processor, otherwise returns false.
Synopsis
boolean
function-available
(
|
funname
string
); |
Description
The function returns true if XPATH Processor can execute
XPATH extension function with the name specified by
funname
argument.
If such function is not defined, function-available returns false.
Parameters
funname
The name of XPATH extension function
Return Types
Boolean
Examples
Example 24.590.
This expression should return false.
function-available('http://example.com/Virtuoso/nosuchfunction')