private void Request(DataRequestEvent e) {
InstrumentDataRequest cDataRequest = __cSeries.DataRequest;
DataRequest cRange = cDataRequest.Range;
ZRequest cRequest = new ZRequest();
cRequest.Method = "POST";
cRequest.Url = __sHttpUrl;
cRequest.Parameters = string.Format("exchange={0}&symbolId={1}&timeFrame={2}&position={3}&startDate={4}&endDate={5}&count={6}", cDataRequest.Exchange, cDataRequest.Symbol, cDataRequest.Resolution.TotalSeconds, __lPosition, cRange.From.ToString("yyyy-MM-dd"), cRange.To.ToString("yyyy-MM-dd"), (cRange.RequestType == DataRequestType.BarsBack || __lPosition != -1) ? e.Count : cRange.Count);
cRequest.CookieContainer = __cCookies;
int iRet = cRequest.Request();
if (iRet == 0) {
ZReader cReader = new ZReader(cRequest.Response);
e.Result = cReader.Result;
if (cReader.Result == 0) {
int iCount = e.Count = cReader.Count;
__cSeries.AdjustSize(iCount, true);
ZBuffer cBuffer = cReader.Read();
while (--iCount >= 0) {
cBuffer.Position = iCount * DATA_BLOCK_SIZE;
DateTime cDate = cBuffer.GetDateTime();
double dOpen = cBuffer.GetDouble();
double dHigh = cBuffer.GetDouble();
double dLow = cBuffer.GetDouble();
double dClose = cBuffer.GetDouble();
double dVolume = cBuffer.GetDouble();
__cSeries.AddSeries(cDate, dOpen, dHigh, dLow, dClose, dVolume, false);
}
__lPosition = cReader.Position;
e.Ranges[0] = cReader.BeginDate;
e.Ranges[1] = cReader.EndDate;
if (__lPosition == 0) {
e.IsAlreadyRequestAllData = true;
}
}
}
}
internal void OnRequest(DataRequestEvent e) {
if (onRequest != null) {
onRequest(this, e);
if (e.Result == 0) {
__cDataRequest.Range.Count = e.Count;
__cDataRequest.Range.From = e.Ranges[0];
__cDataRequest.Range.IsAlreadyRequestAllData = e.IsAlreadyRequestAllData;
if (!this.Initialized) { //尚未初始化之前才需要更新(初始化之後已經併入即時報價資訊, 更新時間會是目前最新的報價時間)
__cUpdateTime = __cTimes[this.Indexer.RealtimeIndex]; //更新最後的更新時間(如果沒有即時報價資訊, 這個就是最後一根 Bars 的時間)
}
}
}
}
private void SeriesSymbolData_onRequest(object sender, DataRequestEvent e) {
int iCount = e.Count;
int iBaseCount = __cSeries.DataRequest.Range.Count;
if (e.Position > iBaseCount) {
Request(e);
if (e.Result == 0) {
e.Count += iBaseCount;
if (e.IsAlreadyRequestAllData) {
__cSeries.RemoveRequest(); ////如果已經全部讀取完畢就取消事件
if (onCompleted != null) {
InstrumentDataRequest cDataRequest = __cSeries.DataRequest;
onCompleted(this, new DataAdapterCompleteEvent(cDataRequest.Symbol, cDataRequest.Resolution.TotalSeconds));
}
}
}
} else {
DataRequest cDataRequest = __cSeries.DataRequest.Range;
e.Result = 0;
e.Count = iBaseCount;
e.Ranges = new DateTime[] { cDataRequest.From, cDataRequest.To };
e.IsAlreadyRequestAllData = cDataRequest.IsAlreadyRequestAllData;
}
}
private void SeriesSymbolData_onRequest(object sender, DataRequestEvent e) {
SeriesSymbolData cTargetSeries = sender as SeriesSymbolData;
if (!cTargetSeries.DataRequest.Range.IsAlreadyRequestAllData) {
int iTotalSeconds = cTargetSeries.DataRequest.Resolution.TotalSeconds;
SeriesSymbolData cBaseSeries = GetSeries(((iTotalSeconds < Resolution.MAX_BASE_TOTALSECONDS) ? Resolution.MIN_BASE_TOTALSECONDS : Resolution.MAX_BASE_TOTALSECONDS));
if (cBaseSeries.DataRequest.Range.IsAlreadyRequestAllData) {
e.IsAlreadyRequestAllData = true;
e.Count = cBaseSeries.DataRequest.Range.Count / e.Rate;
} else {
int iPosition = e.Position * e.Rate;
int iRequestCount = iPosition - cBaseSeries.DataRequest.Range.Count;
DataRequestEvent cRequestEvent = new DataRequestEvent(iPosition, iRequestCount, cBaseSeries.DataRequest.Resolution.Rate);
cBaseSeries.OnRequest(cRequestEvent); //回補歷史資訊
if (cRequestEvent.Result == 0) {
e.Result = cRequestEvent.Result;
e.Ranges = cRequestEvent.Ranges;
e.Count = cRequestEvent.Count / e.Rate;
e.IsAlreadyRequestAllData = cRequestEvent.IsAlreadyRequestAllData;
}
}
if (e.IsAlreadyRequestAllData) { //如果已經全部讀取完畢就取消事件
cTargetSeries.RemoveRequest();
}
int iAllocSize = e.Count - cTargetSeries.DataRequest.Range.Count + 1;
cTargetSeries.AdjustSize(iAllocSize, true);
cBaseSeries.Merge(cTargetSeries); //合併資料
}
}
