append method

TQuery append(ModelGeoValue? value)

Only elements contained within the range of neighboring GeoHashes of value will be added to the filtering.

valueの隣り合うGeoHashの範囲内に含む要素のみをフィルタリングに追加します。

Implementation

TQuery append(ModelGeoValue? value) {
  if (value == null) {
    return _toQuery(_modelQuery);
  }
  final sourceNeighbors = _modelQuery.filters
      .firstWhereOrNull(
        (element) => element.key == key,
      )
      ?.value as List<String>?;

  final neighbors = [
    if (sourceNeighbors != null) ...sourceNeighbors,
    value.value.geoHash,
    ...value.value.neighbors,
  ].distinct().sortTo((a, b) => a.compareTo(b));
  return _toQuery(
    _modelQuery.geo(
      key,
      neighbors,
    ),
  );
}