jsonStrLenEnhanced method

Future<List<int?>?> jsonStrLenEnhanced({ required String key, required List<String> paths, })

JSON.STRLEN (Enhanced)

Returns lengths of string values at the specified paths.

Returns a list of lengths, or null if the key does not exist. The list contains null for paths that are not strings.

Implementation

Future<List<int?>?> jsonStrLenEnhanced({
  required String key,
  required List<String> paths,
}) async {
  if (paths.isEmpty) return [];

  final futures = <Future<dynamic>>[];

  for (final path in paths) {
    futures.add(execute(<String>['JSON.STRLEN', key, path]));
  }

  try {
    final results = await Future.wait(futures);

    return results.map<int?>((result) {
      final unwrapped = _unwrapOne(result);
      if (unwrapped is int) return unwrapped;
      return null;
    }).toList();
  } catch (e) {
    if (e.toString().contains('NONEXISTENT')) return null;
    rethrow;
  }
}