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;
}
}
/// <summary>
/// Raises the <see cref="ProcessAlarmNotification"/> event.
/// </summary>
/// <param name="pointState"><see cref="StateRecord"/> to send to <see cref="ProcessAlarmNotification"/> event.</param>
protected virtual void OnProcessAlarmNotification(StateRecord pointState)
{
if (ProcessAlarmNotification != null)
ProcessAlarmNotification(this, new EventArgs<StateRecord>(pointState));
}
/// <summary>
/// Initializes a new instance of the <see cref="StateRecordSummary"/> class.
/// </summary>
/// <param name="record">A <see cref="StateRecord"/> object.</param>
public StateRecordSummary(StateRecord record)
{
HistorianID = record.HistorianID;
CurrentData = record.CurrentData;
}