read method

Implementation

Future<DtoIpGeoLocation?> read(IpAddress ip, {String? language}) async {
  final DtoIpGeoLocation? existing = data[(ip, language)];
  if (existing != null) {
    return existing;
  }

  final result = await safe<DtoIpGeoLocation?>((db) async {
    final stmt = db.select(db.geoLocations);

    stmt.where((u) => u.ip.equals(ip.val));
    if (language != null) {
      stmt.where((u) => u.language.equals(language));
    }

    final GeoLocationRow? row = await stmt.getSingleOrNull();

    if (row == null) {
      return null;
    }

    return _IpGeoLocationDb.fromDb(row);
  });

  if (result == null) {
    return null;
  }

  return data[(ip, language)] = result;
}