com.japisoft.xpath.function.basic
Class SubStringBefore

java.lang.Object
  |
  +--com.japisoft.xpath.function.AbstractFunction
        |
        +--com.japisoft.xpath.function.basic.SubStringBefore
All Implemented Interfaces:
Function

public final class SubStringBefore
extends AbstractFunction

function returns the substring of the first argument string that precedes the first occurrence of the second argument string in the first argument string, or the empty string if the first argument string does not contain the second argument string. For example, substring-before("1999/04/01","/") returns 1999

Author:
(c) 2003 JAPISOFT

Constructor Summary
SubStringBefore()
           
 
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

SubStringBefore

public SubStringBefore()
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