internal CandleHeader(SecDBFileReader file,
ushort resolutionSec,
uint startTimeOffsetSec,
DateTime startTimeDt,
uint count,
uint offset)
{
File = file;
ResolutionSec = resolutionSec;
StartTimeMidnightOffsetSec = startTimeOffsetSec;
StartTime = startTimeDt;
CandleCount = count;
DataOffset = offset;
}
internal QuoteSample(SecDBFileReader file, QuoteSample ps, DateTime ts, Stream stream) : base(ts)
{
var bt = SecDBPrimitives.ReadByte(stream);
BidCount = bt & 0xf;
AskCount = (bt & 0xf0) >> 4;
var cnt = BidCount + AskCount;
if (cnt == 0)
{
throw new FinancialException(StringConsts.SECDB_FILE_HEADER_ERROR + "QuoteSample: no px levels");
}
PriceLevels = new PxLevel[cnt];
var pxStep = file.SystemHeader.PriceStep;
var currentPrice = 0L;
for (var i = 0; i < cnt; i++)
{
var price = SecDBPrimitives.ReadSLEB128(stream);
if (i == 0)
{
if (ps == null)
{
currentPrice = price;
}
else
{
currentPrice = ps.PriceLevels[0].PriceStep;
currentPrice += price;
}
}
else
{
currentPrice += price;
}
var qty = SecDBPrimitives.ReadSLEB128(stream);
var pl = new PxLevel {
PriceStep = currentPrice, Price = currentPrice * pxStep, Quantity = qty
};
PriceLevels[i] = pl;
}
}
internal CandleData(SecDBFileReader file, int sampleNumber, DateTime timestamp, Stream stream)
{
File = file;
SampleNumber = sampleNumber;
TimeStamp = timestamp;
OpenSteps = SecDBPrimitives.ReadInt32(stream);
HighSteps = SecDBPrimitives.ReadInt32(stream);
LowSteps = SecDBPrimitives.ReadInt32(stream);
CloseSteps = SecDBPrimitives.ReadInt32(stream);
BuyVolume = SecDBPrimitives.ReadInt32(stream);
SellVolume = SecDBPrimitives.ReadInt32(stream);
FirstStreamOffset = SecDBPrimitives.ReadUInt64(stream);
}
internal OrderSample(SecDBFileReader file, OrderSample ps, DateTime ts, Stream stream) : base(ts)
{
var flags = SecDBPrimitives.ReadByte(stream);
InternalOrder = (flags & (1)) != 0;
CancelAll = (flags >> 1) != 0;
if (!CancelAll)
{
IsActive = (flags >> 2) != 0;
IsReplacement = (flags >> 3) != 0;
Side = (SideType)((flags >> 4) & 0x1);
IsTakeProfit = (flags >> 5) != 0;
IsStopLoss = (flags >> 6) != 0;
OrderID = SecDBPrimitives.ReadSLEB128(stream);
if (IsActive)
{
var price = SecDBPrimitives.ReadSLEB128(stream);
if (ps == null)
{
PriceStep = price;
}
else
{
PriceStep = ps.PriceStep + price;
}
Price = PriceStep * file.SystemHeader.PriceStep;
Qty = SecDBPrimitives.ReadSLEB128(stream);
}
if (IsReplacement)
{
OldOrderID = SecDBPrimitives.ReadSLEB128(stream);
}
}
}
internal TradeSample(SecDBFileReader file, TradeSample ps, DateTime ts, Stream stream) : base(ts)
{
var flags = SecDBPrimitives.ReadByte(stream);
InternalTrade = (flags & (1)) != 0;
Aggressor = (AggressorType)((flags >> 1) & 0x3);
Side = (SideType)((flags >> 3) & 0x1);
IsQty = (flags & (1 << 4)) != 0;
IsTradeID = (flags & (1 << 5)) != 0;
IsOrderID = (flags & (1 << 6)) != 0;
var price = SecDBPrimitives.ReadSLEB128(stream);
if (ps == null)
{
PriceStep = price;
}
else
{
PriceStep = ps.PriceStep + price;
}
Price = PriceStep * file.SystemHeader.PriceStep;
if (IsQty)
{
Qty = SecDBPrimitives.ReadSLEB128(stream);
}
if (IsTradeID)
{
TradeID = SecDBPrimitives.ReadULEB128(stream);
}
if (IsOrderID)
{
OrderID = SecDBPrimitives.ReadULEB128(stream);
}
}
internal CandlesMeta(SecDBFileReader file, CandleHeader[] candles)
{
File = file; Candles = candles;
}