/// <summary>
/// Replaces the generic node with a node specific to the model.
/// </summary>
protected override NodeState AddBehaviourToPredefinedNode(ISystemContext context, NodeState predefinedNode)
{
BaseObjectState passiveNode = predefinedNode as BaseObjectState;
if (passiveNode == null)
{
return(predefinedNode);
}
NodeId typeId = passiveNode.TypeDefinitionId;
if (!IsNodeIdInNamespace(typeId) || typeId.IdType != IdType.Numeric)
{
return(predefinedNode);
}
switch ((uint)typeId.Identifier)
{
case ObjectTypes.BoilerType:
{
if (passiveNode is BoilerState)
{
break;
}
BoilerState activeNode = new BoilerState(passiveNode.Parent);
activeNode.Create(context, passiveNode);
// replace the node in the parent.
if (passiveNode.Parent != null)
{
passiveNode.Parent.ReplaceChild(context, activeNode);
}
// Autostart boiler simulation state machine
MethodState start = (MethodState)activeNode.Simulation.FindChild(context, Opc.Ua.BrowseNames.Start);
if (start != null)
{
IList <Variant> inputArguments = new List <Variant>();
IList <Variant> outputArguments = new List <Variant>();
List <ServiceResult> errors = new List <ServiceResult>();
start.Call(context, activeNode.NodeId, inputArguments, errors, outputArguments);
}
return(activeNode);
}
}
return(predefinedNode);
}
/// <summary>
/// Creates a boiler and adds it to the address space.
/// </summary>
/// <param name="context">The context to use.</param>
/// <param name="unitNumber">The unit number for the boiler.</param>
private void CreateBoiler(SystemContext context, int unitNumber)
{
BoilerState boiler = new BoilerState(null);
string name = Utils.Format("Boiler #{0}", unitNumber);
boiler.Create(
context,
null,
new QualifiedName(name, m_namespaceIndex),
null,
true);
NodeState folder = (NodeState)FindPredefinedNode(
ExpandedNodeId.ToNodeId(ObjectIds.Boilers, Server.NamespaceUris),
typeof(NodeState));
folder.AddReference(Opc.Ua.ReferenceTypeIds.Organizes, false, boiler.NodeId);
boiler.AddReference(Opc.Ua.ReferenceTypeIds.Organizes, true, folder.NodeId);
string unitLabel = Utils.Format("{0}0", unitNumber);
UpdateDisplayName(boiler.InputPipe, unitLabel);
UpdateDisplayName(boiler.Drum, unitLabel);
UpdateDisplayName(boiler.OutputPipe, unitLabel);
UpdateDisplayName(boiler.LevelController, unitLabel);
UpdateDisplayName(boiler.FlowController, unitLabel);
UpdateDisplayName(boiler.CustomController, unitLabel);
m_boilers.Add(boiler);
AddPredefinedNode(context, boiler);
// Autostart boiler simulation state machine
MethodState start = (MethodState)boiler.Simulation.FindChild(context, Opc.Ua.BrowseNames.Start);
if (start != null)
{
IList <Variant> inputArguments = new List <Variant>();
IList <Variant> outputArguments = new List <Variant>();
List <ServiceResult> errors = new List <ServiceResult>();
start.Call(context, boiler.NodeId, inputArguments, errors, outputArguments);
}
}
/// <summary>
/// Calls a method on an object.
/// </summary>
protected virtual ServiceResult Call(
ISystemContext context,
CallMethodRequest methodToCall,
NodeState source,
MethodState method,
CallMethodResult result)
{
ServerSystemContext systemContext = context as ServerSystemContext;
List<ServiceResult> argumentErrors = new List<ServiceResult>();
VariantCollection outputArguments = new VariantCollection();
ServiceResult error = method.Call(
context,
source.NodeId,
methodToCall.InputArguments,
argumentErrors,
outputArguments);
if (ServiceResult.IsBad(error))
{
return error;
}
// check for argument errors.
bool argumentsValid = true;
for (int jj = 0; jj < argumentErrors.Count; jj++)
{
ServiceResult argumentError = argumentErrors[jj];
if (argumentError != null)
{
result.InputArgumentResults.Add(argumentError.StatusCode);
if (ServiceResult.IsBad(argumentError))
{
argumentsValid = false;
}
}
else
{
result.InputArgumentResults.Add(StatusCodes.Good);
}
// only fill in diagnostic info if it is requested.
if ((systemContext.OperationContext.DiagnosticsMask & DiagnosticsMasks.OperationAll) != 0)
{
if (ServiceResult.IsBad(argumentError))
{
argumentsValid = false;
result.InputArgumentDiagnosticInfos.Add(new DiagnosticInfo(argumentError, systemContext.OperationContext.DiagnosticsMask, false, systemContext.OperationContext.StringTable));
}
else
{
result.InputArgumentDiagnosticInfos.Add(null);
}
}
}
// check for validation errors.
if (!argumentsValid)
{
result.StatusCode = StatusCodes.BadInvalidArgument;
return result.StatusCode;
}
// do not return diagnostics if there are no errors.
result.InputArgumentDiagnosticInfos.Clear();
// return output arguments.
result.OutputArguments = outputArguments;
return ServiceResult.Good;
}