/**
   * Establishes a connection to a registry.
   *
   * @param queryUrl the URL of the query registry
   * @param publishUrl the URL of the publish registry
   */
  public void makeConnection(String queryUrl, String publishUrl) {

    Context context = null;
    ConnectionFactory factory = null;

    /*
     * Define connection configuration properties.
     * To publish, you need both the query URL and the
     * publish URL.
     */
    Properties props = new Properties();
    props.setProperty("javax.xml.registry.queryManagerURL", queryUrl);
    props.setProperty("javax.xml.registry.lifeCycleManagerURL", publishUrl);

    try {
      // Create the connection, passing it the
      // configuration properties
      context = new InitialContext();
      factory = (ConnectionFactory) context.lookup("java:comp/env/eis/JAXR");
      factory.setProperties(props);
      connection = factory.createConnection();
      System.out.println("Created connection to registry");
    } catch (Exception e) {
      e.printStackTrace();
      if (connection != null) {
        try {
          connection.close();
        } catch (JAXRException je) {
        }
      }
    }
  }