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

Version:

1.0

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

equals, 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