getMatchingKeys method

Implementation

List<String> getMatchingKeys(ZenQueryFilter filter) {
  final allKeys = <String>{..._queries.keys, ..._cache.keys};
  final matchingKeys = <String>[];

  for (final key in allKeys) {
    final query = _queries[key];
    if (query != null) {
      if (filter.matches(query)) {
        matchingKeys.add(key);
      }
    } else {
      // Cache-only entry (not mounted as active ZenQuery)
      final tags = _getTagsForKey(key);
      final entry = _cache[key];
      final isStale = entry == null || entry.isExpired;
      if (filter.matchesKeyAndTags(
        key,
        queryTags: tags,
        queryIsStale: isStale,
        queryIsFetching: false,
      )) {
        matchingKeys.add(key);
      }
    }
  }
  return matchingKeys;
}