/// <summary>
/// Changes the session.
/// </summary>
public void ChangeSession(Session session, bool fetchRecent)
{
if (Object.ReferenceEquals(session, m_session))
{
return;
}
if (m_session != null)
{
DeleteSubscription();
m_session = null;
}
m_session = session;
m_dataset.Clear();
LeftPN.Enabled = m_session != null;
if (m_session != null)
{
AggregateCB.Items.Clear();
AggregateCB.Items.Add(new AvailableAggregate()
{
NodeId = null, DisplayName = "None"
});
AggregateCB.SelectedIndex = 0;
ILocalNode node = m_session.NodeCache.Find(ObjectIds.Server_ServerCapabilities_AggregateFunctions) as ILocalNode;
if (node != null)
{
foreach (IReference reference in node.References.Find(ReferenceTypeIds.HierarchicalReferences, false, true, m_session.TypeTree))
{
ILocalNode aggregate = m_session.NodeCache.Find(reference.TargetId) as ILocalNode;
if (aggregate != null || aggregate.TypeDefinitionId == ObjectTypeIds.AggregateFunctionType)
{
AvailableAggregate item = new AvailableAggregate();
item.NodeId = aggregate.NodeId;
item.DisplayName = m_session.NodeCache.GetDisplayText(aggregate);
AggregateCB.Items.Add(item);
}
}
AggregateCB.SelectedIndex = 1;
}
SubscriptionStateChanged();
}
}
/// <summary>
/// Fetches the recent history.
/// </summary>
private void ReadProcessed()
{
AvailableAggregate aggregate = (AvailableAggregate)AggregateCB.SelectedItem;
ReadProcessedDetails details = new ReadProcessedDetails();
details.StartTime = StartTimeDP.Value.ToUniversalTime();
details.EndTime = EndTimeDP.Value.ToUniversalTime();
details.ProcessingInterval = (double)ResampleIntervalNP.Value;
details.AggregateType.Add(aggregate.NodeId);
details.AggregateConfiguration.UseServerCapabilitiesDefaults = true;
HistoryReadValueIdCollection nodesToRead = new HistoryReadValueIdCollection();
HistoryReadValueId nodeToRead = new HistoryReadValueId();
nodeToRead.NodeId = m_nodeId;
nodesToRead.Add(nodeToRead);
HistoryReadResultCollection results = null;
DiagnosticInfoCollection diagnosticInfos = null;
m_session.HistoryRead(
null,
new ExtensionObject(details),
TimestampsToReturn.Both,
false,
nodesToRead,
out results,
out diagnosticInfos);
ClientBase.ValidateResponse(results, nodesToRead);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToRead);
if (StatusCode.IsBad(results[0].StatusCode))
{
throw new ServiceResultException(results[0].StatusCode);
}
HistoryData values = ExtensionObject.ToEncodeable(results[0].HistoryData) as HistoryData;
DisplayResults(values);
// save any continuation point.
SaveContinuationPoint(details, nodeToRead, results[0].ContinuationPoint);
}
/// <summary>
/// Changes the session.
/// </summary>
public void ChangeSession(Session session, bool fetchRecent)
{
if (Object.ReferenceEquals(session, m_session))
{
return;
}
if (m_session != null)
{
DeleteSubscription();
m_session = null;
}
m_session = session;
m_dataset.Clear();
LeftPN.Enabled = m_session != null;
if (m_session != null)
{
AggregateCB.Items.Clear();
AggregateCB.Items.Add(new AvailableAggregate() { NodeId = null, DisplayName = "None" });
AggregateCB.SelectedIndex = 0;
ILocalNode node = m_session.NodeCache.Find(ObjectIds.Server_ServerCapabilities_AggregateFunctions) as ILocalNode;
if (node != null)
{
foreach (IReference reference in node.References.Find(ReferenceTypeIds.HierarchicalReferences, false, true, m_session.TypeTree))
{
ILocalNode aggregate = m_session.NodeCache.Find(reference.TargetId) as ILocalNode;
if (aggregate != null || aggregate.TypeDefinitionId == ObjectTypeIds.AggregateFunctionType)
{
AvailableAggregate item = new AvailableAggregate();
item.NodeId = aggregate.NodeId;
item.DisplayName = m_session.NodeCache.GetDisplayText(aggregate);
AggregateCB.Items.Add(item);
}
}
AggregateCB.SelectedIndex = 1;
}
SubscriptionStateChanged();
}
}
/// <summary>
/// Changes the session.
/// </summary>
public void ChangeSession(Session session)
{
if (Object.ReferenceEquals(session, m_session))
{
return;
}
if (m_session != null)
{
DeleteSubscription();
RemoveSession(session);
m_session = null;
SessionCB.Items.Clear();
}
if (session == null)
{
return;
}
AddSession(session);
m_session = session;
m_dataset.Clear();
LeftPN.Enabled = m_session != null;
if (m_session != null)
{
AggregateCB.Items.Clear();
ILocalNode node = m_session.NodeCache.Find(ObjectIds.Server_ServerCapabilities_AggregateFunctions) as ILocalNode;
if (node != null)
{
foreach (IReference reference in node.References.Find(ReferenceTypeIds.HierarchicalReferences, false, true, m_session.TypeTree))
{
ILocalNode aggregate = m_session.NodeCache.Find(reference.TargetId) as ILocalNode;
if (aggregate != null || aggregate.TypeDefinitionId == ObjectTypeIds.AggregateFunctionType)
{
AvailableAggregate item = new AvailableAggregate();
item.NodeId = aggregate.NodeId;
item.DisplayName = m_session.NodeCache.GetDisplayText(aggregate);
AggregateCB.Items.Add(item);
}
}
if (AggregateCB.Items.Count == 0)
{
AggregateCB.Items.Add(new AvailableAggregate() { NodeId = ObjectIds.AggregateFunction_Interpolative, DisplayName = BrowseNames.AggregateFunction_Interpolative });
AggregateCB.Items.Add(new AvailableAggregate() { NodeId = ObjectIds.AggregateFunction_Average, DisplayName = BrowseNames.AggregateFunction_Average });
AggregateCB.Items.Add(new AvailableAggregate() { NodeId = ObjectIds.AggregateFunction_TimeAverage, DisplayName = BrowseNames.AggregateFunction_TimeAverage });
AggregateCB.Items.Add(new AvailableAggregate() { NodeId = ObjectIds.AggregateFunction_Total, DisplayName = BrowseNames.AggregateFunction_Total });
AggregateCB.Items.Add(new AvailableAggregate() { NodeId = ObjectIds.AggregateFunction_Count, DisplayName = BrowseNames.AggregateFunction_Count });
}
if (AggregateCB.Items.Count > 0)
{
AggregateCB.SelectedIndex = 0;
}
}
SubscriptionStateChanged();
}
}