/// <summary>
/// Updates the event types in cache with the most recent info fetched from the AE server.
/// </summary>
public void UpdateCache(ServerSystemContext context, ushort namespaceIndex)
{
// clear the existing nodes.
EventTypeNodes = new NodeIdDictionary<BaseObjectTypeState>();
Attributes = new Dictionary<int,int[]>();
TypeTable typeTable = context.TypeTable as TypeTable;
// rebuild from the recently fetched list.
for (int ii = 0; ii < EventTypes.Count; ii++)
{
// save the attributes for use when creating filters.
if (EventTypes[ii].EventTypeMapping != EventTypeMapping.ConditionClassType && !Attributes.ContainsKey(EventTypes[ii].CategoryId))
{
EventType eventType = EventTypes[ii];
int[] attributeIds = new int[eventType.Attributes.Count];
for (int jj = 0; jj < attributeIds.Length; jj++)
{
attributeIds[jj] = eventType.Attributes[jj].Id;
}
Attributes.Add(EventTypes[ii].CategoryId, attributeIds);
}
AeEventTypeState node = new AeEventTypeState(EventTypes[ii], namespaceIndex);
BaseObjectTypeState mappingNode = null;
if (!EventTypeNodes.TryGetValue(node.SuperTypeId, out mappingNode))
{
mappingNode = new AeEventTypeMappingState(node.EventType.EventTypeMapping, namespaceIndex);
EventTypeNodes.Add(mappingNode.NodeId, mappingNode);
// ensure the mapping node is in the type table.
if (typeTable != null)
{
if (!typeTable.IsKnown(mappingNode.NodeId))
{
typeTable.AddSubtype(mappingNode.NodeId, mappingNode.SuperTypeId);
}
}
}
EventTypeNodes.Add(node.NodeId, node);
// ensure the type node is in the type table.
if (typeTable != null)
{
if (!typeTable.IsKnown(node.NodeId))
{
typeTable.AddSubtype(node.NodeId, mappingNode.NodeId);
}
}
}
}
/// <summary>
/// Indexes the well known subtypes.
/// </summary>
private void IndexWellKnownTypes()
{
SystemContext context = new SystemContext();
context.EncodeableFactory = m_session.MessageContext.Factory;
context.NamespaceUris = m_session.NamespaceUris;
context.ServerUris = m_session.ServerUris;
NodeStateCollection predefinedNodes = new NodeStateCollection();
predefinedNodes.LoadFromBinaryResource(context, "Opc.Ua.Stack.Generated.Opc.Ua.PredefinedNodes.uanodes", typeof(NodeState).Assembly, true);
NodeIdDictionary <BaseTypeState> types = new NodeIdDictionary <BaseTypeState>();
// collect the instance declarations for all types.
for (int ii = 0; ii < predefinedNodes.Count; ii++)
{
BaseTypeState type = predefinedNodes[ii] as BaseTypeState;
if (type != null)
{
types.Add(type.NodeId, type);
}
}
// index only those types which are subtypes of BaseEventType.
foreach (BaseTypeState type in types.Values)
{
BaseTypeState subType = type;
BaseTypeState superType = null;
int eventType = 0;
while (subType != null)
{
if (subType.NodeId == Opc.Ua.ObjectTypeIds.ConditionType || subType.SuperTypeId == Opc.Ua.ObjectTypeIds.ConditionType)
{
eventType = OpcRcw.Ae.Constants.CONDITION_EVENT;
}
else if (subType.NodeId == Opc.Ua.ObjectTypeIds.AuditEventType || subType.SuperTypeId == Opc.Ua.ObjectTypeIds.AuditEventType)
{
eventType = OpcRcw.Ae.Constants.TRACKING_EVENT;
}
else if (subType.NodeId == Opc.Ua.ObjectTypeIds.BaseEventType || subType.SuperTypeId == Opc.Ua.ObjectTypeIds.BaseEventType)
{
eventType = OpcRcw.Ae.Constants.SIMPLE_EVENT;
}
// found an event, collect the attribute and index it.
if (eventType != 0)
{
List <AeEventAttribute> declarations = new List <AeEventAttribute>();
Dictionary <string, AeEventAttribute> map = new Dictionary <string, AeEventAttribute>();
ComAeUtils.CollectInstanceDeclarations(
m_session,
this,
type,
null,
declarations,
map);
AeEventCategory declaration = new AeEventCategory();
declaration.TypeId = type.NodeId;
declaration.SuperTypeId = type.SuperTypeId;
declaration.EventType = eventType;
declaration.Description = (LocalizedText.IsNullOrEmpty(type.DisplayName))?type.BrowseName.Name:type.DisplayName.Text;
declaration.Attributes = declarations;
m_eventTypes[declaration.TypeId] = declaration;
break;
}
// follow the tree to the parent.
if (!types.TryGetValue(subType.SuperTypeId, out superType))
{
break;
}
subType = superType;
}
}
// hide the built in attributes.
AeEventCategory category = GetCategory(Opc.Ua.ObjectTypeIds.BaseEventType);
if (category != null)
{
for (int ii = 0; ii < category.Attributes.Count; ii++)
{
switch (category.Attributes[ii].BrowsePathDisplayText)
{
case Opc.Ua.BrowseNames.Message:
case Opc.Ua.BrowseNames.Severity:
case Opc.Ua.BrowseNames.SourceName:
case Opc.Ua.BrowseNames.Time:
case Opc.Ua.BrowseNames.ReceiveTime:
case Opc.Ua.BrowseNames.LocalTime:
{
category.Attributes[ii].Hidden = true;
break;
}
}
}
}
}
/// <summary cref="IDictionary.Remove" />
public bool Remove(IReference key)
{
// validate key.
if (!ValidateReference(key, false))
{
return(false);
}
m_version++;
// look up the reference type.
ReferenceTypeEntry entry = null;
if (!m_references.TryGetValue(key.ReferenceTypeId, out entry))
{
return(false);
}
// handle reference to external targets.
if (key.TargetId.IsAbsolute)
{
Dictionary <ExpandedNodeId, LinkedListNode <KeyValuePair <IReference, T> > > targets = null;
if (key.IsInverse)
{
targets = entry.InverseExternalTargets;
}
else
{
targets = entry.ForwardExternalTargets;
}
if (targets == null)
{
return(false);
}
LinkedListNode <KeyValuePair <IReference, T> > node;
if (!targets.TryGetValue(key.TargetId, out node))
{
return(false);
}
m_list.Remove(node);
targets.Remove(key.TargetId);
}
// handle reference to internal target.
else
{
NodeIdDictionary <LinkedListNode <KeyValuePair <IReference, T> > > targets = null;
if (key.IsInverse)
{
targets = entry.InverseTargets;
}
else
{
targets = entry.ForwardTargets;
}
if (targets == null)
{
return(false);
}
LinkedListNode <KeyValuePair <IReference, T> > node;
if (!targets.TryGetValue((NodeId)key.TargetId, out node))
{
return(false);
}
m_list.Remove(node);
targets.Remove((NodeId)key.TargetId);
}
// remove empty reference.
if (entry.IsEmpty)
{
m_references.Remove(key.ReferenceTypeId);
}
return(true);
}
/// <summary>
/// Adds or replaces a reference.
/// </summary>
/// <param name="key">The key.</param>
/// <param name="value">The value.</param>
/// <param name="replace">if set to <c>true</c> reference is replaced.</param>
private void Add(IReference key, T value, bool replace)
{
// validate key.
ValidateReference(key, true);
m_version++;
// look up the reference type.
ReferenceTypeEntry entry = null;
if (!m_references.TryGetValue(key.ReferenceTypeId, out entry))
{
entry = new ReferenceTypeEntry();
m_references.Add(key.ReferenceTypeId, entry);
}
// handle reference to external targets.
if (key.TargetId.IsAbsolute)
{
Dictionary <ExpandedNodeId, LinkedListNode <KeyValuePair <IReference, T> > > targets = null;
if (key.IsInverse)
{
if (entry.InverseExternalTargets == null)
{
entry.InverseExternalTargets = new Dictionary <ExpandedNodeId, LinkedListNode <KeyValuePair <IReference, T> > >();
}
targets = entry.InverseExternalTargets;
}
else
{
if (entry.ForwardExternalTargets == null)
{
entry.ForwardExternalTargets = new Dictionary <ExpandedNodeId, LinkedListNode <KeyValuePair <IReference, T> > >();
}
targets = entry.ForwardExternalTargets;
}
// create a new target.
LinkedListNode <KeyValuePair <IReference, T> > node = new LinkedListNode <KeyValuePair <IReference, T> >(new KeyValuePair <IReference, T>(key, value));
// check if target already exists.
LinkedListNode <KeyValuePair <IReference, T> > existingNode = null;
if (!targets.TryGetValue(key.TargetId, out existingNode))
{
existingNode = node;
m_list.AddLast(node);
}
// need to replace reference in linked linked as well as the target list.
else
{
if (!replace)
{
throw new ArgumentException("Key already exists in dictionary.", "key");
}
m_list.AddAfter(existingNode, node);
m_list.Remove(existingNode);
}
targets[key.TargetId] = node;
}
// handle reference to internal target.
else
{
NodeIdDictionary <LinkedListNode <KeyValuePair <IReference, T> > > targets = null;
if (key.IsInverse)
{
if (entry.InverseTargets == null)
{
entry.InverseTargets = new NodeIdDictionary <LinkedListNode <KeyValuePair <IReference, T> > >();
}
targets = entry.InverseTargets;
}
else
{
if (entry.ForwardTargets == null)
{
entry.ForwardTargets = new NodeIdDictionary <LinkedListNode <KeyValuePair <IReference, T> > >();
}
targets = entry.ForwardTargets;
}
NodeId targetId = (NodeId)key.TargetId;
// create a new target.
LinkedListNode <KeyValuePair <IReference, T> > node = new LinkedListNode <KeyValuePair <IReference, T> >(new KeyValuePair <IReference, T>(key, value));
// check if target already exists.
LinkedListNode <KeyValuePair <IReference, T> > existingNode = null;
if (!targets.TryGetValue(targetId, out existingNode))
{
existingNode = node;
m_list.AddLast(node);
}
// need to replace reference in linked linked as well as the target list.
else
{
if (!replace)
{
throw new ArgumentException("Key already exists in dictionary.", "key");
}
m_list.AddAfter(existingNode, node);
m_list.Remove(existingNode);
}
targets[targetId] = node;
}
}
/// <summary>
/// Returns the target entry associated with the reference.
/// </summary>
/// <param name="key">The key.</param>
/// <param name="value">The value.</param>
/// <returns>The target entry associated with the reference.</returns>
private bool TryGetEntry(IReference key, out KeyValuePair <IReference, T> value)
{
value = new KeyValuePair <IReference, T>();
// validate key.
if (!ValidateReference(key, false))
{
return(false);
}
// look up the reference type.
ReferenceTypeEntry entry = null;
if (!m_references.TryGetValue(key.ReferenceTypeId, out entry))
{
return(false);
}
// handle reference to external targets.
if (key.TargetId.IsAbsolute)
{
Dictionary <ExpandedNodeId, LinkedListNode <KeyValuePair <IReference, T> > > targets = null;
if (key.IsInverse)
{
targets = entry.InverseExternalTargets;
}
else
{
targets = entry.ForwardExternalTargets;
}
if (targets == null)
{
return(false);
}
LinkedListNode <KeyValuePair <IReference, T> > node;
if (targets.TryGetValue(key.TargetId, out node))
{
value = node.Value;
return(true);
}
}
// handle reference to internal target.
else
{
NodeIdDictionary <LinkedListNode <KeyValuePair <IReference, T> > > targets = null;
if (key.IsInverse)
{
targets = entry.InverseTargets;
}
else
{
targets = entry.ForwardTargets;
}
if (targets == null)
{
return(false);
}
LinkedListNode <KeyValuePair <IReference, T> > node;
if (targets.TryGetValue((NodeId)key.TargetId, out node))
{
value = node.Value;
return(true);
}
}
return(false);
}
/// <summary>
/// Indexes the well known subtypes.
/// </summary>
private void IndexWellKnownTypes()
{
SystemContext context = new SystemContext();
context.EncodeableFactory = m_session.MessageContext.Factory;
context.NamespaceUris = m_session.NamespaceUris;
context.ServerUris = m_session.ServerUris;
NodeStateCollection predefinedNodes = new NodeStateCollection();
predefinedNodes.LoadFromBinaryResource(context, "Opc.Ua.Stack.Generated.Opc.Ua.PredefinedNodes.uanodes", typeof(NodeState).Assembly, true);
NodeIdDictionary<BaseTypeState> types = new NodeIdDictionary<BaseTypeState>();
// collect the instance declarations for all types.
for (int ii = 0; ii < predefinedNodes.Count; ii++)
{
BaseTypeState type = predefinedNodes[ii] as BaseTypeState;
if (type != null)
{
types.Add(type.NodeId, type);
}
}
// index only those types which are subtypes of BaseEventType.
foreach (BaseTypeState type in types.Values)
{
BaseTypeState subType = type;
BaseTypeState superType = null;
int eventType = 0;
while (subType != null)
{
if (subType.NodeId == Opc.Ua.ObjectTypeIds.ConditionType || subType.SuperTypeId == Opc.Ua.ObjectTypeIds.ConditionType)
{
eventType = OpcRcw.Ae.Constants.CONDITION_EVENT;
}
else if (subType.NodeId == Opc.Ua.ObjectTypeIds.AuditEventType || subType.SuperTypeId == Opc.Ua.ObjectTypeIds.AuditEventType)
{
eventType = OpcRcw.Ae.Constants.TRACKING_EVENT;
}
else if (subType.NodeId == Opc.Ua.ObjectTypeIds.BaseEventType || subType.SuperTypeId == Opc.Ua.ObjectTypeIds.BaseEventType)
{
eventType = OpcRcw.Ae.Constants.SIMPLE_EVENT;
}
// found an event, collect the attribute and index it.
if (eventType != 0)
{
List<AeEventAttribute> declarations = new List<AeEventAttribute>();
Dictionary<string, AeEventAttribute> map = new Dictionary<string, AeEventAttribute>();
ComAeUtils.CollectInstanceDeclarations(
m_session,
this,
type,
null,
declarations,
map);
AeEventCategory declaration = new AeEventCategory();
declaration.TypeId = type.NodeId;
declaration.SuperTypeId = type.SuperTypeId;
declaration.EventType = eventType;
declaration.Description = (LocalizedText.IsNullOrEmpty(type.DisplayName))?type.BrowseName.Name:type.DisplayName.Text;
declaration.Attributes = declarations;
m_eventTypes[declaration.TypeId] = declaration;
break;
}
// follow the tree to the parent.
if (!types.TryGetValue(subType.SuperTypeId, out superType))
{
break;
}
subType = superType;
}
}
// hide the built in attributes.
AeEventCategory category = GetCategory(Opc.Ua.ObjectTypeIds.BaseEventType);
if (category != null)
{
for (int ii = 0; ii < category.Attributes.Count; ii++)
{
switch (category.Attributes[ii].BrowsePathDisplayText)
{
case Opc.Ua.BrowseNames.Message:
case Opc.Ua.BrowseNames.Severity:
case Opc.Ua.BrowseNames.SourceName:
case Opc.Ua.BrowseNames.Time:
case Opc.Ua.BrowseNames.ReceiveTime:
case Opc.Ua.BrowseNames.LocalTime:
{
category.Attributes[ii].Hidden = true;
break;
}
}
}
}
}
