com.japisoft.xpath.function.basic
Class Not

java.lang.Object
  |
  +--com.japisoft.xpath.function.AbstractFunction
        |
        +--com.japisoft.xpath.function.basic.Not
All Implemented Interfaces:
Function

public final class Not
extends AbstractFunction

function returns true if its argument is false, and false otherwise

Author:
(c) 2003 JAPISOFT

Constructor Summary
Not()
           
 
Method Summary
 java.lang.Object eval(XPathContext context, FastVector arg)
          Evalute this function for this context and the following arguments
 
Methods inherited from class com.japisoft.xpath.function.AbstractFunction
checkOneNodeSet, checkOneNumber, checkOneParameter, checkOneString, checkThreeStrings, checkTwoStrings, getString1, getString2, toString
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

Not

public Not()
Method Detail

eval

public java.lang.Object eval(XPathContext context,
                             FastVector arg)
Description copied from class: AbstractFunction
Evalute this function for this context and the following arguments

Specified by:
eval in interface Function
Specified by:
eval in class AbstractFunction
Parameters:
arg - a Vector value, this is the responsability of the function to test the argument type
Returns:
an Object value like Integer, Boolean, String or NodeSet