public AggregateStage AddProjection(IDonutFunction function)
{
var stage = new AggregateStage(_script, function);
Stages.Add(stage);
return(stage);
}
public AggregateStage(IDonutScript script, IDonutFunction function)
{
Function = function;
_script = script;
ChildStages = new List <AggregateStage>();//new AggregateJobTree(script);
switch (function.Type)
{
case DonutFunctionType.Project: Type = AggregateStageType.Project; break;
case DonutFunctionType.GroupField: Type = AggregateStageType.Group; break;
}
}
/// <summary>
///
/// </summary>
/// <param name="function"></param>
/// <param name="expParameters"></param>
/// <returns></returns>
public IDonutFunction GetFunction(string function)
{
IDonutFunction output = null;
var lower = function.ToLower();
if (Functions.ContainsKey(lower))
{
output = Functions[lower].Clone();
}
else
{
throw new Exception($"Unsupported js function: {function}");
}
return(output);
}
public static DonutFunction Wrap(IDonutFunction df)
{
return(df as DonutFunction);
}
