/// <summary>
/// Example of using a custom aggregation function for standard deviation calculation.
/// </summary>
/// <param name="ericUSDStream"></param>
/// <param name="outputConfig"></param>
/// <param name="adapterStopSignal"></param>
private static void standardDeviationExample(CepStream<StockQuote> cepStream, Application application)
{
var stddevCepStream = from w in cepStream.Where(e => e.FieldID == "Close")
.HoppingWindow(TimeSpan.FromDays(7), TimeSpan.FromDays(1), HoppingWindowOutputPolicy.ClipToWindowEnd)
select new StockQuote()
{
StockID = "ERIC",
FieldID = "7-day Stddev",
Value = w.StandardDeviation()
};
runQuery(stddevCepStream, application);
}
/// <summary>
/// Example of window function
/// </summary>
/// <param name="cepStream"></param>
/// <param name="outputConfig"></param>
/// <param name="adapterStopSignal"></param>
private static void avgExample(CepStream<StockQuote> cepStream, Application application)
{
var avgCepStream = from w in cepStream.Where(e => e.FieldID == "Close")
.HoppingWindow(TimeSpan.FromDays(7), TimeSpan.FromDays(1), HoppingWindowOutputPolicy.ClipToWindowEnd)
select new StockQuote()
{
StockID = "ERIC",
FieldID = "7-day avg",
Value = w.Avg(e => e.Value)
};
runQuery(avgCepStream, application);
}
