/// <summary>
/// Run query over collection using a query definition
/// </summary>
public IBsonDataReader Query(string collection, Query query)
{
if (string.IsNullOrWhiteSpace(collection))
{
throw new ArgumentNullException(nameof(collection));
}
if (query == null)
{
throw new ArgumentNullException(nameof(query));
}
IEnumerable <BsonDocument> source = null;
// test if is an system collection
if (collection.StartsWith("$"))
{
SqlParser.ParseCollection(new Tokenizer(collection), out var name, out var options);
// get registered system collection to get data source
var sys = this.GetSystemCollection(name);
source = sys.Input(this, options);
collection = sys.Name;
}
var exec = new QueryExecutor(this, _monitor, _sortDisk, _settings.UtcDate, collection, query, source);
return(exec.ExecuteQuery());
}