/// <summary>
/// Does any initialization required before the address space can be used.
/// </summary>
/// <remarks>
/// The externalReferences is an out parameter that allows the node manager to link to nodes
/// in other node managers. For example, the 'Objects' node is managed by the CoreNodeManager and
/// should have a reference to the root folder node(s) exposed by this node manager.
/// </remarks>
public override void CreateAddressSpace(IDictionary <NodeId, IList <IReference> > externalReferences)
{
lock (Lock)
{
base.CreateAddressSpace(externalReferences);
// ensure trigger can be found via the server object.
IList <IReference> references = null;
if (!externalReferences.TryGetValue(Opc.Ua.ObjectIds.ObjectsFolder, out references))
{
externalReferences[Opc.Ua.ObjectIds.ObjectsFolder] = references = new List <IReference>();
}
FolderState root = CreateFolder(null, "CitiesNodes", "CitiesNodes");
root.AddReference(ReferenceTypes.Organizes, true, Opc.Ua.ObjectIds.ObjectsFolder);
references.Add(new NodeStateReference(ReferenceTypes.Organizes, false, root.NodeId));
root.EventNotifier = EventNotifiers.SubscribeToEvents;
root.Description = "A folder containing data sources";
AddRootNotifier(root);
try
{
SetupNodes();
FolderState citiesNodes = CreateFolder(root, "Cities", "Cities");
citiesNodes.Description = "This folder contains nodes of the city stations";
WeatherMapVariableState catania = CreateVariable(citiesNodes, "Catania", "Catania", new NodeId(DataTypeIds.WeatherData.Identifier, DataTypeIds.WeatherData.NamespaceIndex), ValueRanks.Scalar);
List <BaseVariableState> childCatania = CreateChild(catania);
WeatherMapVariableState palermo = CreateVariable(citiesNodes, "Palermo", "Palermo", new NodeId(DataTypeIds.WeatherData.Identifier, DataTypeIds.WeatherData.NamespaceIndex), ValueRanks.Scalar);
List <BaseVariableState> childPalermo = CreateChild(palermo);
WeatherMapVariableState messina = CreateVariable(citiesNodes, "Messina", "Messina", new NodeId(DataTypeIds.WeatherData.Identifier, DataTypeIds.WeatherData.NamespaceIndex), ValueRanks.Scalar);
List <BaseVariableState> childMessina = CreateChild(messina);
variables.Add(palermo, childPalermo);
variables.Add(messina, childMessina);
variables.Add(catania, childCatania);
}
catch (Exception e)
{
Utils.Trace(e, "MyOPCServer: Error creating the address space.");
}
AddPredefinedNode(SystemContext, root);
//variable.SetChildValue(SystemContext,BrowseNames.Temperature, variable.Value.Temperature, false);
}
}
private WeatherMapVariableState CreateVariable(NodeState parent, string path, string name, NodeId dataType, int valueRank)
{
WeatherMapVariableState variable = new WeatherMapVariableState(parent);
//variable.CityName.Value = "i";
variable.SymbolicName = name;
variable.ReferenceTypeId = ReferenceTypes.Organizes;
variable.TypeDefinitionId = new NodeId(VariableTypeIds.WeatherMapVariableType.Identifier, VariableTypeIds.WeatherMapVariableType.NamespaceIndex);
variable.NodeId = new NodeId(path, NamespaceIndex);
variable.BrowseName = new QualifiedName(path, NamespaceIndex);
variable.DisplayName = new LocalizedText("en", name);
variable.WriteMask = AttributeWriteMask.DisplayName | AttributeWriteMask.Description;
variable.UserWriteMask = AttributeWriteMask.DisplayName | AttributeWriteMask.Description;
variable.Description = new String("Information about weather for" + variable.SymbolicName.ToString());
//variable.ClearChangeMasks(SystemContext, true);
variable.DataType = dataType;
variable.ValueRank = valueRank;
variable.AccessLevel = AccessLevels.CurrentReadOrWrite;
variable.UserAccessLevel = AccessLevels.CurrentRead;
variable.Historizing = true;
variable.Value = GetNewValue(variable.SymbolicName.ToString());
if (variable.Value != null)
{
variable.StatusCode = StatusCodes.Good;
}
else
{
variable.StatusCode = StatusCodes.Bad;
}
variable.Timestamp = DateTime.UtcNow;
if (valueRank == ValueRanks.OneDimension)
{
variable.ArrayDimensions = new ReadOnlyList <uint>(new List <uint> {
0
});
}
else if (valueRank == ValueRanks.TwoDimensions)
{
variable.ArrayDimensions = new ReadOnlyList <uint>(new List <uint> {
0, 0
});
}
if (parent != null)
{
parent.AddChild(variable);
}
return(variable);
}
private List <BaseVariableState> CreateChild(WeatherMapVariableState variable)
{
List <BaseVariableState> child = new List <BaseVariableState>();
AnalogData info = new AnalogData();
info = variable.Value.Temperature;
AnalogVariableState childTemperatura = (AnalogVariableState)CreateVariableChild(null, "Temperature", "Temperature", new NodeId(VariableTypeIds.WeatherMapVariableType.Identifier, VariableTypeIds.WeatherMapVariableType.NamespaceIndex), new NodeId(DataTypeIds.AnalogData.Identifier, DataTypeIds.AnalogData.NamespaceIndex), ValueRanks.Scalar, info, null);
variable.AddChild(childTemperatura);
child.Add(childTemperatura);
//info = null;
info = variable.Value.Pressure;
AnalogVariableState childPressure = (AnalogVariableState)CreateVariableChild(null, "Pressure", "Pressure", new NodeId(VariableTypeIds.WeatherMapVariableType.Identifier, VariableTypeIds.WeatherMapVariableType.NamespaceIndex), new NodeId(DataTypeIds.AnalogData.Identifier, DataTypeIds.AnalogData.NamespaceIndex), ValueRanks.Scalar, info, null);
variable.AddChild(childPressure);
child.Add(childPressure);
// info = null;
info = variable.Value.MaxTemperature;
AnalogVariableState childMaxTemp = (AnalogVariableState)CreateVariableChild(null, "MaxTemperature", "MaxTemperature", new NodeId(VariableTypeIds.WeatherMapVariableType.Identifier, VariableTypeIds.WeatherMapVariableType.NamespaceIndex), new NodeId(DataTypeIds.AnalogData.Identifier, DataTypeIds.AnalogData.NamespaceIndex), ValueRanks.Scalar, info, null);
variable.AddChild(childMaxTemp);
child.Add(childMaxTemp);
info = variable.Value.MinTemperature;
AnalogVariableState childMinTemp = (AnalogVariableState)CreateVariableChild(null, "MinTemperature", "MinTemperature", new NodeId(VariableTypeIds.WeatherMapVariableType.Identifier, VariableTypeIds.WeatherMapVariableType.NamespaceIndex), new NodeId(DataTypeIds.AnalogData.Identifier, DataTypeIds.AnalogData.NamespaceIndex), ValueRanks.Scalar, info, null);
variable.AddChild(childMinTemp);
child.Add(childMinTemp);
BaseVariableState childCity = CreateVariableChild(null, "City", "City", Opc.Ua.VariableTypeIds.BaseVariableType, Opc.Ua.DataTypeIds.String, ValueRanks.Scalar, null, new String(variable.Value.CityName));
variable.AddChild(childCity);
child.Add(childCity);
return(child);
}
