package com.ddfplus.net;
/**
* Resolves Barchart symbol shortcuts to actual symbol(s).
*
* See http://www.barchartmarketdata.com/client/protocol_symbol.php
*
*
*
* Logic for adjusting symbols, after shortcuts, to Jerq DDF feed symbol.
* Verify it's a numeric, then look for month code, then before that is the root.
*
* RBZ15 - start at back year - 15, month Z - December, therefore root is RB
* RBZ5 - start at back year - 5, extrapolate to be 15, month Z - December, therefore root is RB
* RBXZ5 - year - 5, extrapolate to be 15, month Z - December, therefore root is RBX
* RZ15 - start at back year - 15, month Z - December, therefore root is RB
* RZ5 - start at back year - 5, extrapolate to be 15, month Z - December, therefore root is R
* When deciding the full year, assuming it's the current year.
*
* For Futures contracts, currently only Natural Gas (NG), that trade out more than
* 10-years DDF will use alternate contract months
*
* 'A','B','C','D','E','I','L','O','P','R','S','T' = 'Jan' ... 'Dec'
*
* NGZ0 - Natural Gas Dec 2010
* NGT0 - Natural Gas Dec 2020
*
*/
public interface SymbolShortCuts {
String[] resolveShortCutSymbols(String symbol);
}
