amounteditor.java

webwork source

/*
 * WebWork, Web Application Framework
 *
 * Distributable under Apache license.
 * See terms of license at opensource.org
 */
package webwork.examples.bank;

import webwork.action.ValidationEditorSupport;

/**
 * This code is an adaptation of the Struts example from the JavaWorld article by Thor Kristmundsson.
 * http://www.javaworld.com/javaworld/jw-12-2000/jw-1201-struts_p.html
 */
public class AmountEditor
   extends ValidationEditorSupport
{
   public void setAsText(String txt)
   {
      // Validate amount
      if (txt.length() > 11)
      {
         throw new IllegalArgumentException("Amount can have 8 digits plus 2 decimals");
      } 
      
      if (txt.length() == 0)
      {
         throw new IllegalArgumentException("Amount must be specified");
      }
      
      // Convert (will check format)
      try
      {
         Float amount = new Float(txt);

         // Check value
         if (amount.floatValue() <= 0)
         {
            throw new IllegalArgumentException("Amount must be above 0");
         } 
   
         setValue(amount);
      } catch (NumberFormatException e)
      {
         throw new IllegalArgumentException("Amount can have 8 digits plus 2 decimals");
      }
   }
}