| public ReadValue ( BaseVariableState variable ) : object | ||
| variable | BaseVariableState | |
| return | object | |
/// <summary>
/// Generates a new value each time the value is read.
/// </summary>
private ServiceResult DoDeviceRead(
ISystemContext context,
NodeState node,
NumericRange indexRange,
QualifiedName dataEncoding,
ref object value,
ref StatusCode statusCode,
ref DateTime timestamp)
{
BaseVariableState variable = node as BaseVariableState;
if (variable == null)
{
return(ServiceResult.Good);
}
if (!SimulationActive.Value)
{
return(ServiceResult.Good);
}
TestDataSystem system = context.SystemHandle as TestDataSystem;
if (system == null)
{
return(StatusCodes.BadOutOfService);
}
try
{
value = system.ReadValue(variable);
statusCode = StatusCodes.Good;
timestamp = DateTime.UtcNow;
ServiceResult error = BaseVariableState.ApplyIndexRangeAndDataEncoding(
context,
indexRange,
dataEncoding,
ref value);
if (ServiceResult.IsBad(error))
{
statusCode = error.StatusCode;
}
return(ServiceResult.Good);
}
catch (Exception e)
{
return(new ServiceResult(e));
}
}
/// <summary>
/// Generates a new value for the variable.
/// </summary>
protected void GenerateValue(TestDataSystem system, BaseVariableState variable)
{
variable.Value = system.ReadValue(variable);
variable.Timestamp = DateTime.UtcNow;
variable.StatusCode = StatusCodes.Good;
}
/// <summary>
/// Generates a new value for the variable.
/// </summary>
protected void GenerateValue(TestDataSystem system, BaseVariableState variable)
{
variable.Value = system.ReadValue(variable);
variable.Timestamp = DateTime.UtcNow;
variable.StatusCode = StatusCodes.Good;
}