public AggregationResultItem(AggregationResult <T> result, T model, AggregationLevel level, Func <T, string> label, IEnumerable <AggregationResultItem <T> > subItems)
{
Result = result ?? throw new ArgumentNullException(nameof(result));
Model = model;
Level = level;
Label = label?.Invoke(Model);
if (subItems != null)
{
List <AggregationResultItem <T> > list = new List <AggregationResultItem <T> >();
foreach (var subitem in subItems)
{
if (subitem.Parent != null)
{
throw new InvalidOperationException("Sub item belongs to another item.");
}
subitem.Parent = this;
Depth = subitem.IncreaseDepth();
list.Add(subitem);
}
SubItems = list;
}
else
{
SubItems = new List <AggregationResultItem <T> >(5);
}
}
private static AggregationResult <T> Create(IEnumerable <T> models, Func <T, string> label, IEnumerable <FunctionMapping> functions)
{
AggregationResult <T> view = new AggregationResult <T>
{
_functions = functions.Select(o => FromSourceMapping(o)).ToArray()
};
foreach (var model in models)
{
var item = new AggregationResultItem <T>(view, model, AggregationLevel.Details, label, null);
view._items.Add(item);
}
view.AppendGeneration();
return(view);
}
public AggregationResult <TResult> ToResult(IQueryable <TSource> query, Func <TResult, string> label)
{
return(AggregationResult <TResult> .Create(query, this, label));
}
