package  
  {
      public class @ax-actionscript-book-CustomErrors-com-example-programmingas3-errors-ApplicationError extends Error 
      {
          internal static const WARNING:int = 0;
          internal static const FATAL:int = 1;
          public var id:int;
          public var severity:int;
          private static var messages:XML;
          
          public function @ax-actionscript-book-CustomErrors-com-example-programmingas3-errors-ApplicationError() {
              messages = <errors>
                      <error code="9000"><![CDATA[Employee must be assigned to a cost center.]]></error>
                      <error code="9001"><![CDATA[Employee must be assigned to only one cost center.]]></error>
                      <error code="9002"><![CDATA[Employee must have one and only one SSN.]]></error>
                      <error code="9999"><![CDATA[The application has been stopped.]]></error>
                  </errors>;
          }
          
          public function getMessageText(id:int):String {
              var message:XMLList = messages.error.(applet.class == id);
              return message[0].text();
          }
          
          public function getTitle():String {
              return "Error #" + id;
          }
          
          public function toString():String {
              return "[APPLICATION ERROR #" + id + "] " + message;
          }
      }
  }