/// <summary>
/// Creates the read requests.
/// </summary>
private List<HdaReadRequest> CreateReadRequests(
Session session,
DateTime startTime,
DateTime endTime,
uint numValues,
bool returnBounds,
int[] serverHandles,
ReadRawModifiedDetails details)
{
// start time or end time must be specified.
if (startTime == DateTime.MinValue && endTime == DateTime.MinValue)
{
throw ComUtils.CreateComException(ResultIds.E_INVALIDARG);
}
// num values must be specified if start or end time is missing.
if (numValues == 0 && (startTime == DateTime.MinValue || endTime == DateTime.MinValue))
{
throw ComUtils.CreateComException(ResultIds.E_INVALIDARG);
}
// can't exceed the limits imposed by the server configuration.
if (m_configuration.MaxReturnValues > 0 && numValues > m_configuration.MaxReturnValues)
{
throw ComUtils.CreateComException(ResultIds.E_MAXEXCEEDED);
}
details.StartTime = startTime;
details.EndTime = endTime;
details.IsReadModified = false;
details.NumValuesPerNode = numValues;
details.ReturnBounds = returnBounds;
// build the list of requests.
List<HdaReadRequest> requests = new List<HdaReadRequest>();
for (int ii = 0; ii < serverHandles.Length; ii++)
{
HdaReadRequest request = new HdaReadRequest();
requests.Add(request);
// look up server handle.
request.Handle = m_itemManager.LookupHandle(serverHandles[ii]);
if (request.Handle == null)
{
request.Error = ResultIds.E_INVALIDHANDLE;
continue;
}
// initialize request.
request.NodeId = request.Handle.NodeId;
request.ClientHandle = request.Handle.ClientHandle;
}
return requests;
}
/// <summary>
/// Creates the read requests.
/// </summary>
private List<HdaReadRequest> CreateReadRequests(
Session session,
DateTime startTime,
DateTime endTime,
int serverHandle,
uint[] attributeIds,
ReadRawModifiedDetails details)
{
if (startTime == DateTime.MinValue)
{
throw ComUtils.CreateComException(ResultIds.E_INVALIDARG);
}
// check for the special case where current values are requested.
if (endTime == DateTime.MinValue && startTime.AddSeconds(10) < DateTime.UtcNow)
{
throw ComUtils.CreateComException(ResultIds.E_INVALIDARG);
}
// specify the parameters for the request.
details.StartTime = startTime;
details.EndTime = endTime;
details.IsReadModified = false;
details.NumValuesPerNode = 0;
details.ReturnBounds = true;
// look up server handle.
HdaItemHandle handle = m_itemManager.LookupHandle(serverHandle);
if (handle == null)
{
throw ComUtils.CreateComException(ResultIds.E_INVALIDHANDLE);
}
// get the node ids for the requested attributes.
NodeId[] nodeIds = null;
int[] errors = m_itemManager.GetAttributeHistoryNodeIds(
session,
handle,
attributeIds,
out nodeIds);
// build the list of requests.
List<HdaReadRequest> requests = new List<HdaReadRequest>();
for (int ii = 0; ii < attributeIds.Length; ii++)
{
HdaReadRequest request = new HdaReadRequest();
requests.Add(request);
// initialize request.
request.Handle = handle;
request.AttributeId = attributeIds[ii];
if (request.Handle == null)
{
request.Error = ResultIds.E_INVALIDHANDLE;
continue;
}
request.ClientHandle = request.Handle.ClientHandle;
// check for errors.
if (errors[ii] != ResultIds.S_OK)
{
request.Error = errors[ii];
request.IsComplete = true;
continue;
}
request.NodeId = nodeIds[ii];
}
return requests;
}
/// <summary>
/// Creates the read requests.
/// </summary>
private List<HdaReadRequest> CreateReadRequests(
Session session,
DateTime[] timestamps,
int[] serverHandles,
ReadAtTimeDetails details)
{
if (m_configuration.MaxReturnValues > 0 && timestamps.Length > m_configuration.MaxReturnValues)
{
throw ComUtils.CreateComException(ResultIds.E_MAXEXCEEDED);
}
details.ReqTimes.AddRange(timestamps);
// build the list of requests.
List<HdaReadRequest> requests = new List<HdaReadRequest>();
for (int ii = 0; ii < serverHandles.Length; ii++)
{
HdaReadRequest request = new HdaReadRequest();
requests.Add(request);
// look up server handle.
request.Handle = m_itemManager.LookupHandle(serverHandles[ii]);
if (request.Handle == null)
{
request.Error = ResultIds.E_INVALIDHANDLE;
continue;
}
// set node id to use.
request.NodeId = request.Handle.NodeId;
request.ClientHandle = request.Handle.ClientHandle;
}
return requests;
}
/// <summary>
/// Creates the read requests.
/// </summary>
private List<HdaReadRequest> CreateReadRequests(
Session session,
DateTime startTime,
DateTime endTime,
int[] serverHandles,
ReadRawModifiedDetails details)
{
if (startTime == DateTime.MinValue || endTime == DateTime.MinValue)
{
throw ComUtils.CreateComException(ResultIds.E_INVALIDARG);
}
// specify the parameters for the request.
details.StartTime = startTime;
details.EndTime = endTime;
details.IsReadModified = false;
details.NumValuesPerNode = 0;
details.ReturnBounds = false;
// build the list of requests.
List<HdaReadRequest> requests = new List<HdaReadRequest>();
for (int ii = 0; ii < serverHandles.Length; ii++)
{
HdaReadRequest request = new HdaReadRequest();
requests.Add(request);
// initialize request.
request.AttributeId = INTERNAL_ATTRIBUTE_ANNOTATION;
// look up server handle.
request.Handle = m_itemManager.LookupHandle(serverHandles[ii]);
if (request.Handle == null)
{
request.Error = ResultIds.E_INVALIDHANDLE;
continue;
}
request.ClientHandle = request.Handle.ClientHandle;
// look up annotation property.
NodeId annotationsId = m_itemManager.GetAnnotationsPropertyNodeId(session, request.Handle);
if (NodeId.IsNull(annotationsId))
{
request.Error = ResultIds.S_NODATA;
continue;
}
// set node id.
request.NodeId = annotationsId;
}
return requests;
}
/// <summary>
/// Creates the read requests.
/// </summary>
private List<HdaReadRequest> CreateReadRequests(
Session session,
DateTime startTime,
DateTime endTime,
double resampleInterval,
int[] serverHandles,
uint[] aggregateIds,
ReadProcessedDetails details)
{
// start time or end time must be specified.
if (startTime == DateTime.MinValue || endTime == DateTime.MinValue || startTime == endTime || resampleInterval < 0)
{
throw ComUtils.CreateComException(ResultIds.E_INVALIDARG);
}
// check the number of intervals.
if (m_configuration.MaxReturnValues > 0 && resampleInterval != 0)
{
long range = Math.Abs(((endTime - startTime).Ticks));
if (range/(TimeSpan.TicksPerMillisecond*resampleInterval) > m_configuration.MaxReturnValues)
{
throw ComUtils.CreateComException(ResultIds.E_MAXEXCEEDED);
}
}
details.StartTime = startTime;
details.EndTime = endTime;
details.ProcessingInterval = resampleInterval;
// build the list of requests.
List<HdaReadRequest> requests = new List<HdaReadRequest>();
for (int ii = 0; ii < serverHandles.Length; ii++)
{
HdaReadRequest request = new HdaReadRequest();
requests.Add(request);
// initialize request.
request.AggregateId = aggregateIds[ii];
// look up server handle.
request.Handle = m_itemManager.LookupHandle(serverHandles[ii]);
if (request.Handle == null)
{
request.Error = ResultIds.E_INVALIDHANDLE;
continue;
}
// set node id to use.
request.NodeId = request.Handle.NodeId;
request.ClientHandle = request.Handle.ClientHandle;
// check aggregate.
NodeId aggregateId = ComUtils.GetHdaAggregateId(aggregateIds[ii]);
if (aggregateId == null)
{
aggregateId = m_mapper.GetRemoteIntegerIdMapping(Opc.Ua.BrowseNames.AggregateFunctions, aggregateIds[ii]);
}
if (aggregateId == null)
{
request.Error = ResultIds.E_NOT_AVAIL;
continue;
}
details.AggregateType.Add(aggregateId);
}
return requests;
}
