/// <summary>
/// Writes <paramref name="data"/> received in <see cref="System.ServiceModel.Web.WebMessageFormat.Json"/> format to the <see cref="DataService.Archive"/>.
/// </summary>
/// <param name="data">An <see cref="SerializableTimeSeriesData"/> object.</param>
public void WriteTimeSeriesDataAsJson(SerializableTimeSeriesData data)
{
WriteTimeSeriesData(data);
}
private SerializableTimeSeriesData ReadCurrentTimeSeriesData(string fromID, string toID)
{
try
{
// Abort if services is not enabled.
if (!Enabled)
return null;
// Ensure that data archive is available.
if (Archive == null)
throw new ArgumentNullException("Archive");
// Read current time-series data from the archive.
byte[] buffer = null;
StateRecord state = null;
SerializableTimeSeriesData data = new SerializableTimeSeriesData();
List<SerializableTimeSeriesDataPoint> points = new List<SerializableTimeSeriesDataPoint>();
for (int id = int.Parse(fromID); id <= int.Parse(toID); id++)
{
buffer = Archive.ReadStateData(id);
if (buffer == null)
{
// ID is invalid.
continue;
}
else
{
// Add to resultset.
state = new StateRecord(id, buffer, 0, buffer.Length);
points.Add(new SerializableTimeSeriesDataPoint(state.CurrentData));
}
}
data.TimeSeriesDataPoints = points.ToArray();
return data;
}
catch (Exception ex)
{
// Notify about the encountered processing exception.
OnServiceProcessException(ex);
throw;
}
}
private SerializableTimeSeriesData ReadHistoricTimeSeriesData(string fromID, string toID, string startTime, string endTime)
{
try
{
// Abort if services is not enabled.
if (!Enabled)
return null;
// Ensure that data archive is available.
if (Archive == null)
throw new ArgumentNullException("Archive");
// Read historic time-series data from the archive.
SerializableTimeSeriesData data = new SerializableTimeSeriesData();
List<SerializableTimeSeriesDataPoint> points = new List<SerializableTimeSeriesDataPoint>();
List<int> historianIDs = new List<int>();
for (int id = int.Parse(fromID); id <= int.Parse(toID); id++)
{
historianIDs.Add(id);
}
foreach (IDataPoint point in Archive.ReadData(historianIDs, startTime, endTime))
{
points.Add(new SerializableTimeSeriesDataPoint(point));
}
data.TimeSeriesDataPoints = points.ToArray();
return data;
}
catch (Exception ex)
{
// Notify about the encountered processing exception.
OnServiceProcessException(ex);
throw;
}
}
private void WriteTimeSeriesData(SerializableTimeSeriesData data)
{
try
{
// Abort if services is not enabled.
if (!Enabled)
return;
// Ensure that data archive is available.
if (Archive == null)
throw new ArgumentNullException("Archive");
// Write all time-series data to the archive.
foreach (SerializableTimeSeriesDataPoint point in data.TimeSeriesDataPoints)
{
Archive.WriteData(point.Deflate());
}
}
catch (Exception ex)
{
// Notify about the encountered processing exception.
OnServiceProcessException(ex);
throw;
}
}