The following java class implements a random number function in XPath for the input mappers of BusinessWorks tasks.

Compile this java class and add it to your BusinessWorks project using a Java Custom Function. If you use the prefix "custommath" in the Java Custom Function then you can call this function from XPath with custommath:uniformRandom()

package com.tibco;
 
public class XpathMathExtension
{
  // compute a random number between 0 and one
  public static double uniformRandom()
  {
    return Math.random();
  } 
 
  // the help information, will be shown in the XPath Formula Builder
  public static final String[][] HELP_STRINGS ={
    {"uniformRandom", "Returns a uniformly distributed random number between 0 and 1.",
     "Example", "uniformRandom()"}
  };
}