/// <summary>
/// Get Average (<see cref="GetAverage(BO.Energiemenge, TimeRange, Wertermittlungsverfahren, string, Mengeneinheit)"/>)
/// for a pure Energiemenge with automatically found parameters.
/// </summary>
/// <seealso cref="IsPure(BO4E.BO.Energiemenge)"/>
/// <param name="em">Energiemenge</param>
/// <returns>Tuple of average value and unit of measurement</returns>
public static Tuple <decimal?, Mengeneinheit> GetAverage(this BO4E.BO.Energiemenge em)
{
if (!IsPure(em))
{
throw new ArgumentException("Energiemenge is not pure.");
}
else if (em.Energieverbrauch.Count == 0)
{
return(Tuple.Create <decimal?, Mengeneinheit>(null, Mengeneinheit.KW));
}
else
{
Verbrauch v = em.Energieverbrauch.First <Verbrauch>();
return(Tuple.Create <decimal?, Mengeneinheit>(em.GetAverage(v.Wertermittlungsverfahren, v.Obiskennzahl, v.Einheit), v.Einheit));
}
}
/// <summary>
/// Same as <see cref="GetAverage(Mengeneinheit, DateTime, DateTime)"/> but without specifying a time slice.
/// </summary>
/// <param name="em">Energiemenge</param>
/// <param name="wev">type of measurement</param>
/// <param name="obiskennzahl">OBIS</param>
/// <param name="me">an intensive or extensive unit</param>
/// <returns>The average for the given Mengeneinheit for the Energiemenge object or null if there was no Verbrauch for the given Mengeneinheit.</returns>
public static decimal?GetAverage(this BO4E.BO.Energiemenge em,
Wertermittlungsverfahren wev, string obiskennzahl, Mengeneinheit me)
{
return(em.GetAverage(em.GetTimeRange(), wev, obiskennzahl, me));
}