code: public static String getDriverClassName(final String url) {
          for (Entry<String, String> entry : URL_PREFIX_AND_DRIVER_CLASS_NAME_MAPPER.entrySet()) {
              if (url.startsWith(entry.getKey())) {
                  return entry.getValue();
              }
          }
          throw new ShardingException("Cannot resolve JDBC url `%s`. Please implements `%s` and add to SPI.", url, JDBCDriverURLRecognizer.class.getName());
      }
docs: Get JDBC driver class name.
  
  @param url JDBC URL
  @return driver class name