public AstUnaryWindowExpression Update(AstUnaryWindowOperator @operator, AstExpression arg, AstWindow window)
{
if (@operator == _operator && arg == _arg && window == _window)
{
return(this);
}
return(new AstUnaryWindowExpression(@operator, arg, window));
}
public static string Render(this AstUnaryWindowOperator @operator)
{
return(@operator switch
{
AstUnaryWindowOperator.AddToSet => "$addToSet",
AstUnaryWindowOperator.Average => "$avg",
AstUnaryWindowOperator.First => "$first",
AstUnaryWindowOperator.Last => "$last",
AstUnaryWindowOperator.Locf => "$locf",
AstUnaryWindowOperator.Max => "$max",
AstUnaryWindowOperator.Min => "$min",
AstUnaryWindowOperator.Push => "$push",
AstUnaryWindowOperator.StandardDeviationPopulation => "$stdDevPop",
AstUnaryWindowOperator.StandardDeviationSample => "$stdDevSamp",
AstUnaryWindowOperator.Sum => "$sum",
_ => throw new InvalidOperationException($"Unexpected unary window operator: {@operator}.")
});
public AstUnaryWindowExpression(AstUnaryWindowOperator @operator, AstExpression arg, AstWindow window)
{
_operator = @operator;
_arg = Ensure.IsNotNull(arg, nameof(arg));
_window = window;
}