C# Class qXL.DataCache

Datei anzeigen Open project: exxeleron/qXL

Public Methods

Method	Description
ChangeHistoryLength ( int newLength ) : void	Changes history size to be kept in memory. In case the history is made shorter data that is now found behind the history window will be deleted.
DataCache ( int historyLength ) : System	Simple constructor allowing initialization of history length.
GetData ( string alias, string table, string symbol, string column, string historyLvl ) : object	Simple data getter. Allows to retrieve data from given history level, e.g.: "-2" In case data is missing will return null.
GetHistoryLength ( ) : int
UpdateData ( string alias, string table, string symbol, string column, object data ) : void	Function for updating data in memory. Automatically rewinds data for historical values.

Method	Description
GetData ( string alias, string table, string symbol, string column ) : object	Simple data getter. Does not take history into account, so for history fetching overloaded version of this function should be used. In case data is missing will return null.
RewindData ( string alias, string table, string symbol, string column ) : void	Function for shifting data in history. In case we have a history set to 5 this function will: 1. re-write 4th value to 5th position 2. re-write 3rd value to 4th position 3. re-write 2nd value to 3rd position 4. re-write 1st value to 2nd position

Changes history size to be kept in memory. In case the history is made shorter data that is now found behind the history window will be deleted.

public ChangeHistoryLength ( int newLength ) : void
newLength	int	new length of the history vector
return	void

Simple constructor allowing initialization of history length.

public DataCache ( int historyLength ) : System
historyLength	int	amout of history positions that should be kept per symbol
return	System

Simple data getter. Allows to retrieve data from given history level, e.g.: "-2" In case data is missing will return null.

public GetData ( string alias, string table, string symbol, string column, string historyLvl ) : object
alias	string	connection alias
table	string	table name
symbol	string	symbol
column	string	column
historyLvl	string	/// "position" in history relative to "current" value, e.g.: "-1","-2" would mean previous and /// previous previous value respectively ///
return	object

public GetHistoryLength ( ) : int
return	int

Function for updating data in memory. Automatically rewinds data for historical values.

public UpdateData ( string alias, string table, string symbol, string column, object data ) : void
alias	string	connection alias
table	string	table name
symbol	string	symbol name
column	string	column name
data	object	data to be stored on most recent("current") position
return	void