/// <summary>
/// Runs the transformers.
/// </summary>
/// <returns><c>true</c>, if transformers was run, <c>false</c> otherwise.</returns>
public bool RunTransformers()
{
if (!Transformers.Any())
{
LogManager.Info("No transformation operations configured.", this);
return(true);
}
bool success = false;
var transformers = TransformerManager.GetTransformers(Transformers);
if (transformers?.Any() ?? false && InputData?.Keys?.Count >= 1)
{
// iterate through the list of transformers and run on each input data set
var transformedData = new Dictionary <string, IEnumerable <SensorReading> >();
foreach (var transformer in transformers)
{
// Sanity checking ...
LogManager.Info($"Running transformation operation:\n\t{transformer}", this);
// Run the operation ...
foreach (var key in InputData.Keys)
{
bool dataAlreadyProcessedForKey = transformedData.ContainsKey(key);
var inputData = (dataAlreadyProcessedForKey ? transformedData[key] : InputData[key]);
var transformedValues = transformer.Transform(inputData);
if (dataAlreadyProcessedForKey)
{
transformedData[key] = transformedValues;
}
else
{
transformedData.Add(key, transformedValues);
}
if (WriteOutputFile)
{
CsvFileWriter.WriteResultsToFile
(new[] { OutputDirs.Transformers, transformer.GetType().Name },
key, transformer.GetHeaderCsv(), transformedValues);
}
}
}
InputData = transformedData;
success = true;
}
else
{
LogManager.Error("No input data to run transformations on.", this);
}
return(success);
}