code: static void parse(String path, DbConn cnx) throws JqmXmlException
      {
          parse(path, cnx, null);
      }
docs: Will import all JobDef from an XML file. Creates and commits a transaction.
  
  @param path
  full or relative path to the deployment descriptor to read.
  @param cnx
  a database connection to use with no active transaction.
  @throws JqmEngineException