/// <summary>
/// Recursive function that will cycle through the readings, starting at
/// indexToUpdate until it reaches the end of the readings list, updating
/// the trustworthiness as it goes along.
/// </summary>
/// <param name="readings"></param>
/// <param name="indexToUpdate"></param>
/// <param name="config">If left null, will use config from database - optional for unit testing purposes</param>
public static void UpdateReadingsTrustworthiness(List <DepthReadingModel> readings, int indexToUpdate, DrillConfigModel config = null)
{
if (indexToUpdate >= readings.Count)
{
return; // end of list
}
if (config == null)
{
config = Config ?? (Config = DrillConfigService.GetInstance().DrillConfigModel);
}
var azimuthRecordsToQuery =
RetrieveXRecordsBefore(readings, indexToUpdate, config.NumberOfRecordsToQueryAzimuth).ToList();
var dipRecordsToQuery = config.NumberOfRecordsToQueryAzimuth == config.NumberOfRecordsToQueryDip
? azimuthRecordsToQuery // no need to calculate new list, if they're both going to be the same
: RetrieveXRecordsBefore(readings, indexToUpdate, config.NumberOfRecordsToQueryDip).ToList();
CalculateTrustWorthiness(config, readings[indexToUpdate], dipRecordsToQuery, azimuthRecordsToQuery);
UpdateReadingsTrustworthiness(readings, indexToUpdate + 1, config);
}
/// <summary>
/// Retrieve singleton instance of config service - on first call
/// GetInstance will attempt to retrieve config from database, if
/// config does not exist in database, an instance is created and
/// inserted into the database.
/// </summary>
/// <returns>Database config service instance</returns>
public static DrillConfigService GetInstance()
{
if (_instance != null)
{
return(_instance); // already instantiated
}
// create default instance
_instance = new DrillConfigService();
// attempt to read config from database
try
{
using (var db = new DsmContext())
{
var config = db.Config.FirstOrDefaultAsync().Result;
if (config == null) // no config exists in database
{
// insert default instance
db.Config.Add(_instance.DrillConfigModel);
db.SaveChanges();
}
else
{
// config exists, create service instance using config data
_instance = new DrillConfigService(config);
}
}
}
catch (SqliteException ex)
{
Console.WriteLine("Failed to retrieve or write config to database", ex);
}
catch (AggregateException ex)
{
Console.WriteLine("Failed to retrieve or write config to database", ex);
}
return(_instance);
}