Mercurial > silverbladetech
view Stocks/Stocks.Common/Models/Price.cs @ 121:8f94475d3146 tip
final code
author | stevenh7776 |
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date | Thu, 31 May 2012 15:35:26 +0100 |
parents | e5d46bb6cdb0 |
children |
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using Stocks.Common.Core; using System.Collections; using System; using System.Collections.Generic; namespace Stocks.Common.Models { public class Price : IEquatable<Price>, IComparable<Price>, IComparable { public string Symbol { get; set; } public decimal CurrentPrice { get; set; } public decimal PreviousPrice { get; set; } public Price() { } public Price(string symbol, decimal currentPrice, decimal previousPrice) : this() { Symbol = symbol; CurrentPrice = currentPrice; PreviousPrice = previousPrice; } public override bool Equals(object obj) { if (obj is Price) return Equals(obj as Price); else return false; } public bool Equals(Price other) { return (Symbol == other.Symbol && CurrentPrice == other.CurrentPrice && PreviousPrice == other.PreviousPrice); } public int CompareTo(Price other) { return Symbol.CompareTo(other.Symbol); } public int CompareTo(Price other, PriceComparisonType comparisonType) { switch (comparisonType) { case PriceComparisonType.NotSet: case PriceComparisonType.Symbol: return Symbol.CompareTo(other.Symbol); case PriceComparisonType.CurrentPrice: return CurrentPrice.CompareTo(other.CurrentPrice); case PriceComparisonType.PreviousPrice: return PreviousPrice.CompareTo(other.PreviousPrice); default: throw new Exception("Unknown comparison type"); } } public int CompareTo(object obj) { Price other; if (obj is Price) other = obj as Price; else throw new ArgumentException("obj is not a Price"); return CompareTo(other); } public override int GetHashCode() { int hash = 13; hash = (hash * 7) + Symbol.GetHashCode(); hash = (hash * 7) + CurrentPrice.GetHashCode(); hash = (hash * 7) + PreviousPrice.GetHashCode(); return hash; } public static bool operator ==(Price lhs, Price rhs) { if (System.Object.ReferenceEquals(lhs, rhs)) return true; if (((object)lhs == null) || ((object)rhs == null)) return false; return lhs.Symbol == rhs.Symbol && lhs.CurrentPrice == rhs.CurrentPrice && lhs.PreviousPrice == rhs.PreviousPrice; } public static bool operator !=(Price lhs, Price rhs) { return !(lhs == rhs); } public class PriceComparer : IComparer<Price>, IComparer { public PriceComparisonType ComparisonMethod { get; set; } public int Compare(Price x, Price y) { return x.CompareTo(y, ComparisonMethod); } public int Compare(object x, object y) { Price lhs, rhs; if (x is Price) lhs = x as Price; else throw new ArgumentException("x is not a Price"); if (y is Price) rhs = y as Price; else throw new ArgumentException("y is not a Price"); return lhs.CompareTo(rhs, ComparisonMethod); } } } public enum PriceComparisonType { NotSet = 0, Symbol, CurrentPrice, PreviousPrice } }