docs: def check_map(uri, url_root):
      """
      return a tuple of the rule and kw.
      """
      # TODO: Building the Map each time this is called seems like it could be more effiecent.
      result = []
      try:
          result = db.execute(text(fetch_query_string('select_route_where_dynamic.sql'))).fetchall()
      except OperationalError as err:
          current_app.logger.error("OperationalError: %s", err)
          return (None, None)
      if result:
          #routes = result.as_dict()
          #(routes, col_names) = rowify(result, c.description)
          #current_app.logger.debug( [x['rule'] for x in routes] )
          rules = map( lambda r: Rule(r['rule'], endpoint='dynamic'), result )
          d_map = Map( rules )
          map_adapter = d_map.bind(url_root)
          #current_app.logger.debug(uri)
          try:
              (rule, rule_kw) = map_adapter.match(path_info=uri, return_rule=True)
              #current_app.logger.debug(rule)
              return (str(rule), rule_kw)
          except HTTPException:
              pass
      return (None, {})