internal void Unsubscribe(QueryConnection connection)
{
_connectionIds.TryRemove(connection.Id, out var _);
if (_connectionIds.Count == 0)
{
_db.RemoveInstance(this);
}
}
internal void RemoveConnection(QueryConnection connection)
{
_connectionsById.TryRemove(connection.Id, out var _);
UnsubscribeIfIdle();
}
internal void Subscribe(QueryConnection connection) => _connectionIds.TryAdd(connection.Id, false);