/// <summary>
/// Queues the value to the monitored item.
/// </summary>
/// <param name="context">The context.</param>
/// <param name="request">The request.</param>
/// <param name="monitoredItem">The monitored item.</param>
private void QueueValue(ServerSystemContext context, HdaReadRequest request, MonitoredItem monitoredItem)
{
NodeHandle handle = monitoredItem.ManagerHandle as NodeHandle;
if (handle == null)
{
return;
}
ReadValueId nodeToRead = monitoredItem.GetReadValueId();
DataValue value = new DataValue();
ServiceResult error = null;
HdaItemState item = handle.Node as HdaItemState;
HdaAttributeState attribute = handle.Node as HdaAttributeState;
if (item != null)
{
error = request.GetResult(context, item, nodeToRead, value, monitoredItem.DiagnosticsMasks);
}
else if (attribute != null)
{
error = request.GetResult(context, attribute, nodeToRead, value, monitoredItem.DiagnosticsMasks);
}
value.ServerTimestamp = DateTime.UtcNow;
if (value.StatusCode != StatusCodes.BadNotFound)
{
monitoredItem.QueueValue(value, error);
}
}
/// <summary>
/// Queues the value to the monitored item.
/// </summary>
/// <param name="context">The context.</param>
/// <param name="request">The request.</param>
/// <param name="monitoredItem">The monitored item.</param>
public void QueueValue(ServerSystemContext context, ReadRequest request, MonitoredItem monitoredItem)
{
NodeHandle handle = monitoredItem.ManagerHandle as NodeHandle;
if (handle == null)
{
return;
}
ReadValueId nodeToRead = monitoredItem.GetReadValueId();
DataValue value = new DataValue();
ServiceResult error = null;
// read item value.
DaItemState item = handle.Node as DaItemState;
DaPropertyState daProperty = handle.Node as DaPropertyState;
PropertyState uaProperty = handle.Node as PropertyState;
if (item != null)
{
error = request.GetResult(context, item, nodeToRead, value, monitoredItem.DiagnosticsMasks);
}
// read vendor defined property value.
else if (daProperty != null)
{
error = request.GetResult(context, daProperty, nodeToRead, value, monitoredItem.DiagnosticsMasks);
}
// read UA defined property value.
else if (uaProperty != null)
{
error = request.GetResult(context, uaProperty, nodeToRead, value, monitoredItem.DiagnosticsMasks);
}
value.ServerTimestamp = DateTime.UtcNow;
if (value.StatusCode != StatusCodes.BadNotFound)
{
monitoredItem.QueueValue(value, error);
}
else
{
monitoredItem.QueueValue(value, StatusCodes.BadNodeIdUnknown);
}
}
