def _read_configuration_file(self, config_filename):
config = configparser.ConfigParser()<EOL>config.read(config_filename)<EOL>self._parent_class_name = config.get('<STR_LIT>', '<STR_LIT>')<EOL>self._parent_class_namespace = config.get('<STR_LIT>', '<STR_LIT>')<EOL>self._wrapper_class_name = config.get('<STR_LIT>', '<STR_LIT>')<EOL>self._wrapper_filename = config.get('<STR_LIT>', '<STR_LIT>')<EOL>self._metadata_filename = config.get('<STR_LIT>', '<STR_LIT>')<EOL>self._lob_as_string_flag = config.get('<STR_LIT>', '<STR_LIT>')<EOL>
Reads parameters from the configuration file.

:param str config_filename: The name of the configuration file.