/// <summary>
/// Creates a collection of all possible keys given some tariff attributes.
/// </summary>
/// <param name="attributes">The attributes from whose attribute values all possible keys are to be created.</param>
/// <returns>All possible keys provided by the given tariff attributes.</returns>
public static IEnumerable <ITariffKey> Combinations(IEnumerable <ITariffAttribute> attributes)
{
IEnumerable <ITariffKey> combinations = null;
foreach (ITariffAttribute attribute in attributes)
{
if (combinations == null)
{
combinations = attribute.Select(x => new TariffKey(new List <TariffAttributeValue>()
{
x
}));
}
else
{
IList <ITariffKey> tmpCombinations = new List <ITariffKey>();
foreach (ITariffKey key in combinations)
{
foreach (TariffAttributeValue attributeValue in attribute)
{
ITariffKey tmpKey = new TariffKey(key.TariffAttributeValues.Append(attributeValue));
tmpCombinations.Add(tmpKey);
}
}
combinations = tmpCombinations;
}
}
return(combinations);
}
/// <summary>
/// Constructor of the tariff data.
/// </summary>
/// <param name="attributes">Attributes the data is to be modelled with.</param>
public TariffData(IEnumerable <ITariffAttribute> attributes)
{
Attributes = new List <ITariffAttribute>(attributes).AsReadOnly();
_cells = new Dictionary <ITariffKey, TariffCell>(TariffKey.CreateTariffKeyComparer());
foreach (ITariffKey key in TariffKey.Combinations(Attributes))
{
_cells.Add(key, new TariffCell(0m, 0));
}
}
