protected override DataValue Read(
RequestContext context,
NodeAttributeHandle nodeHandle,
string indexRange,
QualifiedName dataEncoding)
{
DataValue baseValue = base.Read(context, nodeHandle, indexRange, dataEncoding);
if (nodeHandle.AttributeId != 13)
{
return(baseValue);
}
var processVariable = nodeHandle.UserData as VariableNode;
var processVariableData = processVariable?.UserData as VariableNodeData;
if (processVariableData == null)
{
return(baseValue);
}
var v = new DataValue(processVariableData.ReadValue());
return(v);
}
protected override StatusCode?Write(
RequestContext context,
NodeAttributeHandle nodeHandle,
string indexRange,
DataValue value)
{
StatusCode?statusCode = base.Write(context, nodeHandle, indexRange, value);
var processVariable = nodeHandle?.UserData as VariableNode;
var processVariableData = processVariable?.UserData as VariableNodeData;
if (processVariableData == null)
{
return(statusCode);
}
return(processVariableData.WriteValue(value.Value) &&
statusCode != null && StatusCode.IsGood((StatusCode)statusCode)
? StatusCodes.Good
: StatusCodes.Bad);
}
