Listing 9. Chaining the XCBL Writer to the Order Processor

  /**
   * This method takes an InputSource that represents an order in
   * XCBL 3.5 format and converts it to an Order object and also
   * creates an XCBL 3.5 OrderResponse document to be returned
   * to the buyer
   *
   * @param argIn the order in XCBL 3.5 format
   * @param argWriter the writer to which to write the OrderResponse
   * document
   * @exception SAXException, IOException
   */
  public Order processXCBL35Order(InputSource argIn, Writer argWriter)
    throws SAXException, IOException
  {
    m_parserManager = new SAXAdapter();
    m_writerManager = new SAXAdapter(m_parserManager);
    m_writerHandler = new XCBLResponseWriter(m_writerManager);
    m_writerManager.registerDefaultHandler(m_writerHandler);
    m_writerHandler.setWriter(argWriter);

    // always call parse() on the last pipeline element
    Map map = new HashMap();
    m_parserManager.setMap(map);
    m_writerManager.parse(argIn);
    Order order = (Order) map.get(OrderConstants.ORDER_TAG);
    map.clear();

    return order;
  }