private static void WriteData(Session session, Parameter parameter, ParameterDataAccessBase pdaNewParameter, ParameterValues samples)
{
// add data to new created parameter
for (var j = samples.SampleCount - 1; j >= 0; j--)
{
var newTimestamp = samples.Timestamp[j];
var newValue = samples.Data[j] + 10;
session.AddChannelData(
parameter.ChannelIds.FirstOrDefault(),
newTimestamp,
1, //value of 1 param
BitConverter.GetBytes(newValue));
Console.WriteLine($"Written sample. Timestamp: {newTimestamp.ToTimeString()} Value:{newValue}");
}
// read data back to verify the data added
pdaNewParameter.GoTo(session.EndTime);
var samplesNewParameter = pdaNewParameter.GetNextSamples(10, StepDirection.Reverse);
for (var j = 0; j < samplesNewParameter.SampleCount; j++)
{
Console.WriteLine($"{parameter.Identifier} {samplesNewParameter.Timestamp[j].ToTimeString()} {samplesNewParameter.Data[j]}");
}
}
private static ParameterValues ReadData(Session session, ParameterDataAccessBase pda)
{
// read vCar data
pda.GoTo(session.EndTime);
var samples = pda.GetNextSamples(10, StepDirection.Reverse);
Console.WriteLine("** Samples **");
for (var j = 0; j < samples.SampleCount; j++)
{
Console.WriteLine($"vCar:Chassis {samples.Timestamp[j].ToTimeString()} {samples.Data[j]}");
}
return(samples);
}
/// <summary>
///
/// </summary>
/// <param name="executionContext"></param>
public void Execute(IExecutionContext executionContext)
{
var timestamps = executionContext.FunctionInput.Timestamps;
var timestampsCount = timestamps.Length;
var index = executionContext.FunctionOutput.OutputParameterIndexes[ParameterIdentifier];
var parameterOutput = executionContext.FunctionOutput.OutputParametersValues[index];
var input = executionContext.FunctionInput.Values[index];
if (parameterDataAccess == null)
{
this.parameterDataAccess = executionContext.Session.CreateParameterDataAccess("vCar:Chassis");
}
var count = parameterDataAccess.GetSamplesCount(timestamps.FirstOrDefault(), timestamps.LastOrDefault());
for (int i = 0; i < timestampsCount; i++)
{
parameterOutput[i] = count;
}
}
