public HistoricalDataForLastRecord GetLastRecord(int id)
{
var lastRecordQuery = from data in Entities.HistoricalDatas
where data.IdId.Equals(id)
orderby data.Date descending
select data;
HistoricalData lastRecordTemp = lastRecordQuery.FirstOrDefault();
if (lastRecordTemp != null)
{
HistoricalDataForLastRecord lastRecord = new HistoricalDataForLastRecord(lastRecordTemp.HistocalDataId, lastRecordTemp.Value, lastRecordTemp.Date);
return(lastRecord);
}
return(null);
}
private void ReadValueFromDevice()
{
if (IsCalibrationFetched == false)
{
return;
}
ProcessDataResult processDataResult = null;
#if RELEASE
if (Appl18 != null)
{
processDataResult = Appl18.GetInputValue(this.Id);
}
else if (Appl19 != null)
{
processDataResult = Appl19.GetInputValue(this.Id);
}
#endif
#if DEBUG
processDataResult = ProcessData.GetData(IPAddress, ILModuleNumber, PDInWord);
#endif
if (processDataResult.HasError)
{
return;
}
double temp = (float)processDataResult.Value;
if (this.Calibration != 0)
{
if (this.CalibrationOperation == CalibrationOperation.Jam)
{
temp += this.Calibration;
}
else if (this.CalibrationOperation == CalibrationOperation.Zarb)
{
temp *= this.Calibration;
}
}
this.Value = temp;
try
{
channel.AddNewLastValue(this.Id, this.Value);
}
catch (System.Exception ex)
{
logger.LogException(LogLevel.Info, string.Format("MonitoringAIOServer.ReadValueFromDevice.{0}", this.Id), ex);
return;
}
HistoricalDataForLastRecord lastRecord = null;
try
{
lastRecord = channel.GetLastRecord(this.Id);
}
catch (System.Exception ex)
{
logger.LogException(LogLevel.Info, string.Format("MonitoringAIOServer.ReadValueFromDevice.{0}", this.Id), ex);
return;
}
if (lastRecord == null)
{
SaveValueInDatabase();
}
else
{
TimeSpan timeSpanDiff = DateTime.Now - lastRecord.Date;
if (timeSpanDiff > MaxTimeInterval)
{
SaveValueInDatabase();
return;
}
double lastRecordvalue = lastRecord.Value;
var diff = Math.Abs(lastRecordvalue - this.Value);
if (diff < this.DifferenceBetweenCurrentAndLastRecord)
{
return;
}
SaveValueInDatabase();
}
}
