/// <summary>
/// Compares the current <see cref="StateRecord"/> object to <paramref name="obj"/>.
/// </summary>
/// <param name="obj">Object against which the current <see cref="StateRecord"/> object is to be compared.</param>
/// <returns>
/// Negative value if the current <see cref="StateRecord"/> object is less than <paramref name="obj"/>,
/// Zero if the current <see cref="StateRecord"/> object is equal to <paramref name="obj"/>,
/// Positive value if the current <see cref="StateRecord"/> object is greater than <paramref name="obj"/>.
/// </returns>
public virtual int CompareTo(object obj)
{
StateRecord other = obj as StateRecord;
if (other == null)
{
return(1);
}
else
{
return(m_historianID.CompareTo(other.HistorianID));
}
}
/// <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;
}
/// <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;
}
/// <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 ((object)ProcessAlarmNotification != null)
ProcessAlarmNotification(this, new EventArgs<StateRecord>(pointState));
}
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 ((object)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 StateRecord ReadStateDataRecord(int historianID)
{
StateRecord record = new StateRecord(historianID);
// TODO: Just doing this to get latest value until API supports this
IEnumerable<IDataPoint> dataPoints;
Ticks stopTime = DateTime.UtcNow.Ticks;
Ticks startTime = stopTime - Ticks.PerSecond * 2;
dataPoints = ReadDataStream(m_clientDatabase.Read((ulong)(long)startTime, (ulong)(long)stopTime, new[] { (ulong)historianID }));
StateRecordDataPoint dataPoint = new StateRecordDataPoint(dataPoints.Last());
record.CurrentData = dataPoint;
record.PreviousData = dataPoint;
record.ArchivedData = dataPoint;
return record;
}
