[Quantproject-developers] QuantProject/b3_Data/DataProviders HistoricalDataProvider.cs,1.2,1.3

[Glauco S. <gla...@us...>]

Update of /cvsroot/quantproject/QuantProject/b3_Data/DataProviders
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv18780/b3_Data/DataProviders

Modified Files:
	HistoricalDataProvider.cs 
Log Message:
An automatic quote caching tecnique has been implemented.

Index: HistoricalDataProvider.cs
===================================================================
RCS file: /cvsroot/quantproject/QuantProject/b3_Data/DataProviders/HistoricalDataProvider.cs,v
retrieving revision 1.2
retrieving revision 1.3
diff -C2 -d -r1.2 -r1.3
*** HistoricalDataProvider.cs	28 Aug 2004 17:24:57 -0000	1.2
--- HistoricalDataProvider.cs	29 Nov 2004 16:05:04 -0000	1.3
***************
*** 126,138 ****
  		}
  
  		public static double GetMarketValue( string instrumentKey , ExtendedDateTime extendedDateTime )
!     {
!       //DateTime dateTime = 
!       return Convert.ToDouble(
!         ( (History) ((Hashtable)
!           cachedHistories[ instrumentKey ])[ extendedDateTime.BarComponent ] ).GetByIndex(
!           ( (History) ((Hashtable) cachedHistories[ instrumentKey ])[ extendedDateTime.BarComponent ]
!             ).IndexOfKeyOrPrevious( extendedDateTime.DateTime ) ) );
!     }
  
  		/// <summary>
--- 126,161 ----
  		}
  
+ 		private static void cache( string instrumentKey , BarComponent barComponent )
+ 		{
+ 			if ( !cachedHistories.ContainsKey( instrumentKey ) )
+ 				// no component at all for the instrument instrumentKey has been cached yet
+ 				cachedHistories.Add( instrumentKey , new Hashtable() );
+ 			((Hashtable)cachedHistories[ instrumentKey ]).Add( barComponent ,
+ 				DataBase.GetHistory( instrumentKey , barComponent ) );
+ 		}
  		public static double GetMarketValue( string instrumentKey , ExtendedDateTime extendedDateTime )
! 		{
! 			if ( !cachedHistories.ContainsKey( instrumentKey ) ||
! 				!(((Hashtable)cachedHistories[ instrumentKey ]).ContainsKey(
! 				extendedDateTime.BarComponent)) )
! 				// the instrument instrumentKey has not been cached yet, for the given bar component
! 				cache( instrumentKey , extendedDateTime.BarComponent );
! 			return Convert.ToDouble(
! 				( (History) ((Hashtable)
! 				cachedHistories[ instrumentKey ])[ extendedDateTime.BarComponent ] ).GetByIndex(
! 				( (History) ((Hashtable) cachedHistories[ instrumentKey ])[ extendedDateTime.BarComponent ]
! 				).IndexOfKeyOrPrevious( extendedDateTime.DateTime ) ) );
! 		}
! 
! 		public static double GetMarketValue( string instrumentKey , DateTime dateTime ,
! 			BarComponent barComponent )
! 		{
! 			//DateTime dateTime = 
! 			return Convert.ToDouble(
! 				( (History) ((Hashtable)
! 				cachedHistories[ instrumentKey ])[ barComponent ] ).GetByIndex(
! 				( (History) ((Hashtable) cachedHistories[ instrumentKey ])[ barComponent ]
! 				).IndexOfKeyOrPrevious( dateTime ) ) );
! 		}
  
  		/// <summary>