/// <summary>
/// Initializes a new instance of the <see cref="PositionGroupKey"/> class
/// </summary>
/// <param name="buyingPowerModel">The group's buying power model</param>
/// <param name="positions">The positions comprising the group</param>
public PositionGroupKey(IPositionGroupBuyingPowerModel buyingPowerModel, IEnumerable <IPosition> positions)
{
BuyingPowerModel = buyingPowerModel;
// these have to be sorted for determinism
UnitQuantities = positions.Select(p => Tuple.Create(p.Symbol, p.UnitQuantity)).ToImmutableSortedSet();
IsDefaultGroup = UnitQuantities.Count == 1 && BuyingPowerModel.GetType() == typeof(SecurityPositionGroupBuyingPowerModel);
}
/// <summary>
/// Initializes a new instance of the <see cref="PositionGroupKey"/> class for groups with a single security
/// </summary>
/// <param name="buyingPowerModel">The group's buying power model</param>
/// <param name="security">The security</param>
public PositionGroupKey(IPositionGroupBuyingPowerModel buyingPowerModel, Security security)
{
IsDefaultGroup = buyingPowerModel.GetType() == typeof(SecurityPositionGroupBuyingPowerModel);
BuyingPowerModel = buyingPowerModel;
UnitQuantities = new[]
{
Tuple.Create(security.Symbol, security.SymbolProperties.LotSize)
};
}
/// <summary>Indicates whether the current object is equal to another object of the same type.</summary>
/// <param name="other">An object to compare with this object.</param>
/// <returns>true if the current object is equal to the <paramref name="other" /> parameter; otherwise, false.</returns>
public virtual bool Equals(IPositionGroupBuyingPowerModel other)
{
if (ReferenceEquals(null, other))
{
return(false);
}
if (ReferenceEquals(this, other))
{
return(true);
}
return(GetType() == other.GetType());
}