yoba.cs

                internal static object FindRealSource(Model model, ValueSourceKey key, IList<IDimension> dimensionsPriority, params DataMapping[] mappings)
		{
			var orderedIds = key.Items.Select(x => new { index = dimensionsPriority.IndexOf(x.Dimension), Item = x })
				.OrderBy(y => y.index).ToArray();

			var toPermutate = orderedIds.Where(x => x.index >= 0).Select(x => x.Item);
			var excludedIds = orderedIds.Where(x => x.index < 0).Select(x => x.Item);

			var parentChains = toPermutate.Select(x => GetChainToParent(x).ToArray()).ToList();

			var order = PermutationsMany<DimensionItem>(parentChains);

			foreach (var item in order)
			{
				var parentKey = new ValueSourceKey(item.Union(excludedIds).ToArray());
				object res;

				if (CalculatedValuesCache.IsOn && CalculatedValuesCache.TryGetValue(parentKey, out res))
				{
					return res;
				}

				if (model.TryGetRealValueContainer(parentKey, out res))
				{
					CalculatedValuesCache.AddIFCachingNow(parentKey, res);
					return res;
				}

				foreach (var mapping in mappings)
				{
					ValueSourceKey sourceKey = null;
					if (mapping.TryGetMapping(parentKey, out sourceKey))
					{
						var value = mapping.Source.GetValue(sourceKey);
						CalculatedValuesCache.AddIFCachingNow(parentKey, value);
						return value;
					}
				}
			}
			return null;
		}