private ServiceResult OnWriteValueDiscrete(
ISystemContext context,
NodeState node,
NumericRange indexRange,
QualifiedName dataEncoding,
ref object value,
ref StatusCode statusCode,
ref DateTime timestamp)
{
MultiStateValueDiscreteState variable = node as MultiStateValueDiscreteState;
TypeInfo typeInfo = TypeInfo.Construct(value);
if (variable == null ||
typeInfo == null ||
typeInfo == Opc.Ua.TypeInfo.Unknown ||
!TypeInfo.IsNumericType(typeInfo.BuiltInType))
{
return(StatusCodes.BadTypeMismatch);
}
if (indexRange != NumericRange.Empty)
{
return(StatusCodes.BadIndexRangeInvalid);
}
Int32 number = Convert.ToInt32(value);
if (number >= variable.EnumValues.Value.Length || number < 0)
{
return(StatusCodes.BadOutOfRange);
}
if (!node.SetChildValue(context, BrowseNames.ValueAsText, variable.EnumValues.Value[number].DisplayName,
true))
{
return(StatusCodes.BadOutOfRange);
}
node.ClearChangeMasks(context, true);
return(ServiceResult.Good);
}
/// <summary>
/// Creates a new variable.
/// </summary>
private DataItemState CreateMultiStateValueDiscreteItemVariable(NodeState parent, string path, string name, params string[] enumNames)
{
MultiStateValueDiscreteState variable = new MultiStateValueDiscreteState(parent);
variable.NodeId = new NodeId(path, NamespaceIndex);
variable.BrowseName = new QualifiedName(path, NamespaceIndex);
variable.DisplayName = new LocalizedText("en", name);
variable.WriteMask = AttributeWriteMask.None;
variable.UserWriteMask = AttributeWriteMask.None;
variable.Create(
SystemContext,
null,
variable.BrowseName,
null,
true);
variable.SymbolicName = name;
variable.ReferenceTypeId = ReferenceTypes.Organizes;
variable.DataType = DataTypeIds.UInt32;
variable.ValueRank = ValueRanks.Scalar;
variable.AccessLevel = AccessLevels.CurrentReadOrWrite;
variable.UserAccessLevel = AccessLevels.CurrentReadOrWrite;
variable.Historizing = false;
variable.Value = (uint)0;
variable.StatusCode = StatusCodes.Good;
variable.Timestamp = DateTime.UtcNow;
// variable.OnWriteValue = OnWriteDiscrete;
// there are two enumerations for this type:
// EnumStrings = the string representations for enumerated values
// EnumValues = the actual enumerated value
// set the enumerated strings
LocalizedText[] strings = new LocalizedText[enumNames.Length];
for (int ii = 0; ii < strings.Length; ii++)
{
strings[ii] = enumNames[ii];
}
//variable.EnumStrings = new PropertyState<LocalizedText[]>( variable );
//variable.EnumStrings.Value = strings;
//variable.EnumStrings.AccessLevel = AccessLevels.CurrentReadOrWrite;
//variable.EnumStrings.UserAccessLevel = AccessLevels.CurrentReadOrWrite;
// set the enumerated values
EnumValueType[] values = new EnumValueType[enumNames.Length];
for (int ii = 0; ii < values.Length; ii++)
{
values[ii] = new EnumValueType();
values[ii].Value = ii;
values[ii].Description = strings[ii];
values[ii].DisplayName = strings[ii];
}
variable.EnumValues.Value = values;
variable.EnumValues.AccessLevel = AccessLevels.CurrentReadOrWrite;
variable.EnumValues.UserAccessLevel = AccessLevels.CurrentReadOrWrite;
variable.ValueAsText.Value = strings[0];
if (parent != null)
{
parent.AddChild(variable);
}
return variable;
}
/// <summary>
/// Creates a new variable.
/// </summary>
private DataItemState CreateMultiStateValueDiscreteItemVariable(NodeState parent, string path, string name, NodeId nodeId, params string[] enumNames)
{
MultiStateValueDiscreteState variable = new MultiStateValueDiscreteState(parent);
variable.NodeId = new NodeId(path, NamespaceIndex);
variable.BrowseName = new QualifiedName(path, NamespaceIndex);
variable.DisplayName = new LocalizedText("en", name);
variable.WriteMask = AttributeWriteMask.None;
variable.UserWriteMask = AttributeWriteMask.None;
variable.Create(
SystemContext,
null,
variable.BrowseName,
null,
true);
variable.SymbolicName = name;
variable.ReferenceTypeId = ReferenceTypes.Organizes;
variable.DataType = (nodeId == null) ? DataTypeIds.UInt32 : nodeId;
variable.ValueRank = ValueRanks.Scalar;
variable.AccessLevel = AccessLevels.CurrentReadOrWrite;
variable.UserAccessLevel = AccessLevels.CurrentReadOrWrite;
variable.Historizing = false;
variable.Value = (uint)0;
variable.StatusCode = StatusCodes.Good;
variable.Timestamp = DateTime.UtcNow;
variable.OnWriteValue = OnWriteValueDiscrete;
// there are two enumerations for this type:
// EnumStrings = the string representations for enumerated values
// ValueAsText = the actual enumerated value
// set the enumerated strings
LocalizedText[] strings = new LocalizedText[enumNames.Length];
for (int ii = 0; ii < strings.Length; ii++)
{
strings[ii] = enumNames[ii];
}
// set the enumerated values
EnumValueType[] values = new EnumValueType[enumNames.Length];
for (int ii = 0; ii < values.Length; ii++)
{
values[ii] = new EnumValueType();
values[ii].Value = ii;
values[ii].Description = strings[ii];
values[ii].DisplayName = strings[ii];
}
variable.EnumValues.Value = values;
variable.EnumValues.AccessLevel = AccessLevels.CurrentReadOrWrite;
variable.EnumValues.UserAccessLevel = AccessLevels.CurrentReadOrWrite;
variable.ValueAsText.Value = variable.EnumValues.Value[0].DisplayName;
if (parent != null)
{
parent.AddChild(variable);
}
return(variable);
}
