public class NotFunction extends Object implements Function
4.3 boolean not(boolean)
The not function returns true if its argument is false, and false otherwise.
Constructor and Description |
---|
NotFunction()
Create a new
NotFunction object. |
Modifier and Type | Method and Description |
---|---|
Object |
call(Context context,
List args)
Returns
Boolean.TRUE if the boolean value of
args.get(0) is false, and Boolean.FALSE otherwise. |
static Boolean |
evaluate(Object obj,
Navigator nav)
Returns
Boolean.TRUE if the boolean value of
obj is false, and Boolean.FALSE otherwise. |
public Object call(Context context, List args) throws FunctionCallException
Boolean.TRUE
if the boolean value of
args.get(0)
is false, and Boolean.FALSE
otherwise.
The boolean value is calculated as if by the XPath boolean
function.call
in interface Function
context
- the context at the point in the
expression where the function is calledargs
- a single element listBoolean.TRUE
if the boolean value of
obj
is false, and Boolean.FALSE
otherwiseFunctionCallException
- if args
does not have exactly one argumentpublic static Boolean evaluate(Object obj, Navigator nav)
Boolean.TRUE
if the boolean value of
obj
is false, and Boolean.FALSE
otherwise.
The boolean value is calculated as if by the XPath boolean
function.obj
- the object whose boolean value is invertednav
- the Navigator
used to calculate the boolean value of obj
Boolean.TRUE
if the boolean value of
obj
is false, and Boolean.FALSE
otherwiseCopyright 2001–2022 The Jaxen Project. All rights reserved.