protected static DataPointValue ParseDataPoint(Stream inputStream, MetaFrame meta, ushort index)
{
if (index > meta.FieldMetaDataList.Count - 1)
{
throw new Exception("Decode DeltaFrame: Could not parse field as corresponding meta data is not present");
}
// Value
FieldMetaData metaData = meta.FieldMetaDataList[index];
if (metaData.Index != index)
{
Logger.Error($"Index does not match: FieldMetaData.Index {metaData.Index} != {index} read from Stream.");
}
if (Logger.IsDebugEnabled)
{
Logger.Debug($"Decoding item at position {index} in Meta Frame. Using FieldMetaData:");
Logger.Debug(metaData);
}
DataPointValue item = null;
if (metaData.DataType == File.PreDefinedNodeID)
{
item = new File();
item.Decode(inputStream);
}
else
{
item = ProcessValueFactory.CreateValue(metaData.DataType);
item.Properties = metaData.Properties;
if (meta.StructureDataTypes.TryGetValue(metaData.DataType, out StructureDescription desc))
{
if (meta.EnumDataTypes != null &&
desc.Name.Name.ToString()
.Contains("EnumValue", StringComparison.InvariantCultureIgnoreCase))
{
string enumName = desc.Name.Name.Value
.Substring(10);
item.EnumDescription = meta.EnumDataTypes.First(s => s.Value.Name.Name.Value == enumName)
.Value;
}
item.Decode(inputStream);
}
}
// ReSharper disable once ConditionIsAlwaysTrueOrFalse
if (item == null)
{
Logger.Error($"Unable to decode value {metaData.DataType} at position {index} in message.");
return(null);
}
item.Name = metaData.Name.Value;
item.Properties = metaData.Properties;
item.Index = index;
return(item);
}
internal static DataPointValue GetDataPointValue(DeltaEntry keyEntry, DataSetType dataSetType)
{
ProcessDataPointValue dpv = ProcessValueFactory.CreateValue(keyEntry.DataType);
if (dpv == null)
{
Logger.Error($"Unable to create DataPoint for entry: {keyEntry}");
return(null);
}
dpv.Orcat = keyEntry.Orcat;
dpv.Quality = keyEntry.Quality;
dpv.Timestamp = keyEntry.TimeStamp;
dpv.Value = keyEntry.Value;
if (keyEntry is KeyEntry key)
{
dpv.Prefix = key.Prefix;
dpv.Unit = key.Unit;
dpv.FieldID = key.FieldID;
}
if (dpv is CounterValue)
{
dpv.SetAttributeValue(CounterValue.QuantityAttributeName, keyEntry.Value2);
}
if (dpv is StepPosValue || dpv is StepPosEvent)
{
dpv.SetAttributeValue(StepPosValue.TransientAttributeName, keyEntry.Value2);
}
if (dpv is ComplexMeasuredValue)
{
dpv.SetAttributeValue(ComplexMeasuredValue.AngleAttributeName, keyEntry.Value2);
}
if (dpv.Timestamp == 0)
{
dpv.Timestamp = DateTime.Now.ToFileTimeUtc();
}
return(dpv);
}