/// <summary>
/// Assigns node ids to the children based on the parent node id.
/// </summary>
public void AssignChildNodeIds(ISystemContext context, NodeState parent)
{
NodeId parentId = parent.NodeId;
// check for valid node id.
if (parentId == null || parentId.IdType != IdType.String)
{
return;
}
List <BaseInstanceState> children = new List <BaseInstanceState>();
parent.GetChildren(context, children);
for (int ii = 0; ii < children.Count; ii++)
{
BaseInstanceState child = children[ii];
if (child.SymbolicName == null)
{
continue;
}
StringBuilder builder = new StringBuilder();
builder.Append(parentId.Identifier);
builder.Append(':');
builder.Append(child.SymbolicName);
child.NodeId = new NodeId(builder.ToString(), parentId.NamespaceIndex);
AssignChildNodeIds(context, child);
}
}
/// <summary>
/// Removes the hierachy of nodes from the cache.
/// </summary>
private void RemoveNodeHierarchyFromCache(ISystemContext context, NodeState root)
{
m_cache.Remove(root.NodeId);
List <BaseInstanceState> children = new List <BaseInstanceState>();
root.GetChildren(context, children);
for (int ii = 0; ii < children.Count; ii++)
{
RemoveNodeHierarchyFromCache(context, children[ii]);
}
}
/// <summary>
/// Adds the hierachy of nodes to the cache.
/// </summary>
private void AddNodeHierarchyToCache(ISystemContext context, NodeState root)
{
m_cache.Add(root.NodeId, root);
List <BaseInstanceState> children = new List <BaseInstanceState>();
root.GetChildren(context, children);
for (int ii = 0; ii < children.Count; ii++)
{
AddNodeHierarchyToCache(context, children[ii]);
}
}
/// <summary>
/// Recursively populates the data view.
/// </summary>
private void PopulateDataView(
ISystemContext context,
NodeState parent,
string parentPath)
{
List <BaseInstanceState> children = new List <BaseInstanceState>();
parent.GetChildren(context, children);
for (int ii = 0; ii < children.Count; ii++)
{
BaseInstanceState child = children[ii];
StringBuilder childPath = new StringBuilder();
if (!String.IsNullOrEmpty(parentPath))
{
childPath.Append(parentPath);
childPath.Append("/");
}
childPath.Append(child.GetDisplayText());
if (child.NodeClass == NodeClass.Variable)
{
BaseVariableState variable = (BaseVariableState)child;
if (StatusCode.IsGood(variable.StatusCode))
{
string dataType = m_session.NodeCache.GetDisplayText(variable.DataType);
if (variable.ValueRank >= 0)
{
dataType += "[]";
}
DataRow row = m_dataset.Tables[0].NewRow();
row[0] = m_dataset.Tables[0].Rows.Count;
row[1] = childPath.ToString();
row[2] = dataType;
row[3] = variable.WrappedValue;
m_dataset.Tables[0].Rows.Add(row);
}
}
PopulateDataView(context, child, childPath.ToString());
}
}
/// <summary>
/// Recursively collects the variables in a NodeState and returns a collection of BrowsePaths.
/// </summary>
public void GetBrowsePathFromNodeState(
ISystemContext context,
NodeId rootId,
NodeState parent,
RelativePath parentPath,
BrowsePathCollection browsePaths)
{
List <BaseInstanceState> children = new List <BaseInstanceState>();
parent.GetChildren(context, children);
for (int ii = 0; ii < children.Count; ii++)
{
BaseInstanceState child = children[ii];
BrowsePath browsePath = new BrowsePath();
browsePath.StartingNode = rootId;
browsePath.Handle = child;
if (parentPath != null)
{
browsePath.RelativePath.Elements.AddRange(parentPath.Elements);
}
RelativePathElement element = new RelativePathElement();
element.ReferenceTypeId = child.ReferenceTypeId;
element.IsInverse = false;
element.IncludeSubtypes = false;
element.TargetName = child.BrowseName;
browsePath.RelativePath.Elements.Add(element);
if (child.NodeClass == NodeClass.Variable)
{
browsePaths.Add(browsePath);
}
GetBrowsePathFromNodeState(context, rootId, child, browsePath.RelativePath, browsePaths);
}
}
/// <summary>
/// Recursively indexes the node and its children.
/// </summary>
protected virtual void RemovePredefinedNode(
ISystemContext context,
NodeState node,
List<LocalReference> referencesToRemove)
{
m_predefinedNodes.Remove(node.NodeId);
node.UpdateChangeMasks(NodeStateChangeMasks.Deleted);
node.ClearChangeMasks(context, false);
OnNodeRemoved(node);
// remove from the parent.
BaseInstanceState instance = node as BaseInstanceState;
if (instance != null && instance.Parent != null)
{
instance.Parent.RemoveChild(instance);
}
// remove children.
List<BaseInstanceState> children = new List<BaseInstanceState>();
node.GetChildren(context, children);
for (int ii = 0; ii < children.Count; ii++)
{
node.RemoveChild(children[ii]);
}
for (int ii = 0; ii < children.Count; ii++)
{
RemovePredefinedNode(context, children[ii], referencesToRemove);
}
// remove from type table.
BaseTypeState type = node as BaseTypeState;
if (type != null)
{
m_server.TypeTree.Remove(type.NodeId);
}
// remove inverse references.
List<IReference> references = new List<IReference>();
node.GetReferences(context, references);
for (int ii = 0; ii < references.Count; ii++)
{
IReference reference = references[ii];
if (reference.TargetId.IsAbsolute)
{
continue;
}
LocalReference referenceToRemove = new LocalReference(
(NodeId)reference.TargetId,
reference.ReferenceTypeId,
reference.IsInverse,
node.NodeId);
referencesToRemove.Add(referenceToRemove);
}
}
/// <summary>
/// Adds a node to the set.
/// </summary>
public void Export(ISystemContext context, NodeState node, bool outputRedundantNames = true)
{
if (node == null)
{
throw new ArgumentNullException(nameof(node));
}
if (Opc.Ua.NodeId.IsNull(node.NodeId))
{
throw new ArgumentException("A non-null NodeId must be specified.");
}
UANode exportedNode = null;
switch (node.NodeClass)
{
case NodeClass.Object:
{
BaseObjectState o = (BaseObjectState)node;
UAObject value = new UAObject();
value.EventNotifier = o.EventNotifier;
if (o.Parent != null)
{
value.ParentNodeId = ExportAlias(o.Parent.NodeId, context.NamespaceUris);
}
exportedNode = value;
break;
}
case NodeClass.Variable:
{
BaseVariableState o = (BaseVariableState)node;
UAVariable value = new UAVariable();
value.DataType = ExportAlias(o.DataType, context.NamespaceUris);
value.ValueRank = o.ValueRank;
value.ArrayDimensions = Export(o.ArrayDimensions);
value.AccessLevel = o.AccessLevelEx;
value.MinimumSamplingInterval = o.MinimumSamplingInterval;
value.Historizing = o.Historizing;
if (o.Parent != null)
{
value.ParentNodeId = ExportAlias(o.Parent.NodeId, context.NamespaceUris);
}
if (o.Value != null)
{
XmlEncoder encoder = CreateEncoder(context);
Variant variant = new Variant(o.Value);
encoder.WriteVariantContents(variant.Value, variant.TypeInfo);
XmlDocument document = new XmlDocument();
document.InnerXml = encoder.Close();
value.Value = document.DocumentElement;
}
exportedNode = value;
break;
}
case NodeClass.Method:
{
MethodState o = (MethodState)node;
UAMethod value = new UAMethod();
value.Executable = o.Executable;
if (o.TypeDefinitionId != null && !o.TypeDefinitionId.IsNullNodeId && o.TypeDefinitionId != o.NodeId)
{
value.MethodDeclarationId = Export(o.TypeDefinitionId, context.NamespaceUris);
}
if (o.Parent != null)
{
value.ParentNodeId = ExportAlias(o.Parent.NodeId, context.NamespaceUris);
}
exportedNode = value;
break;
}
case NodeClass.View:
{
ViewState o = (ViewState)node;
UAView value = new UAView();
value.ContainsNoLoops = o.ContainsNoLoops;
exportedNode = value;
break;
}
case NodeClass.ObjectType:
{
BaseObjectTypeState o = (BaseObjectTypeState)node;
UAObjectType value = new UAObjectType();
value.IsAbstract = o.IsAbstract;
exportedNode = value;
break;
}
case NodeClass.VariableType:
{
BaseVariableTypeState o = (BaseVariableTypeState)node;
UAVariableType value = new UAVariableType();
value.IsAbstract = o.IsAbstract;
value.DataType = ExportAlias(o.DataType, context.NamespaceUris);
value.ValueRank = o.ValueRank;
value.ArrayDimensions = Export(o.ArrayDimensions);
if (o.Value != null)
{
XmlEncoder encoder = CreateEncoder(context);
Variant variant = new Variant(o.Value);
encoder.WriteVariantContents(variant.Value, variant.TypeInfo);
XmlDocument document = new XmlDocument();
document.InnerXml = encoder.Close();
value.Value = document.DocumentElement;
}
exportedNode = value;
break;
}
case NodeClass.DataType:
{
DataTypeState o = (DataTypeState)node;
UADataType value = new UADataType();
value.IsAbstract = o.IsAbstract;
value.Definition = Export(o, o.DataTypeDefinition, context.NamespaceUris, outputRedundantNames);
value.Purpose = o.Purpose;
exportedNode = value;
break;
}
case NodeClass.ReferenceType:
{
ReferenceTypeState o = (ReferenceTypeState)node;
UAReferenceType value = new UAReferenceType();
value.IsAbstract = o.IsAbstract;
if (!Opc.Ua.LocalizedText.IsNullOrEmpty(o.InverseName))
{
value.InverseName = Export(new Opc.Ua.LocalizedText[] { o.InverseName });
}
value.Symmetric = o.Symmetric;
exportedNode = value;
break;
}
}
exportedNode.NodeId = Export(node.NodeId, context.NamespaceUris);
exportedNode.BrowseName = Export(node.BrowseName, context.NamespaceUris);
if (outputRedundantNames || node.DisplayName.Text != node.BrowseName.Name)
{
exportedNode.DisplayName = Export(new Opc.Ua.LocalizedText[] { node.DisplayName });
}
else
{
exportedNode.DisplayName = null;
}
if (node.Description != null && !String.IsNullOrEmpty(node.Description.Text))
{
exportedNode.Description = Export(new Opc.Ua.LocalizedText[] { node.Description });
}
else
{
exportedNode.Description = new LocalizedText[0];
}
exportedNode.Category = (node.Categories != null && node.Categories.Count > 0) ? new List <string>(node.Categories).ToArray() : null;
exportedNode.ReleaseStatus = node.ReleaseStatus;
exportedNode.WriteMask = (uint)node.WriteMask;
exportedNode.UserWriteMask = (uint)node.UserWriteMask;
exportedNode.Extensions = node.Extensions;
if (!String.IsNullOrEmpty(node.SymbolicName) && node.SymbolicName != node.BrowseName.Name)
{
exportedNode.SymbolicName = node.SymbolicName;
}
// export references.
INodeBrowser browser = node.CreateBrowser(context, null, null, true, BrowseDirection.Both, null, null, true);
List <Reference> exportedReferences = new List <Reference>();
IReference reference = browser.Next();
while (reference != null)
{
if (node.NodeClass == NodeClass.Method)
{
if (!reference.IsInverse && reference.ReferenceTypeId == ReferenceTypeIds.HasTypeDefinition)
{
reference = browser.Next();
continue;
}
}
Reference exportedReference = new Reference();
exportedReference.ReferenceType = ExportAlias(reference.ReferenceTypeId, context.NamespaceUris);
exportedReference.IsForward = !reference.IsInverse;
exportedReference.Value = Export(reference.TargetId, context.NamespaceUris, context.ServerUris);
exportedReferences.Add(exportedReference);
reference = browser.Next();
}
exportedNode.References = exportedReferences.ToArray();
// add node to list.
UANode[] nodes = null;
int count = 1;
if (this.Items == null)
{
nodes = new UANode[count];
}
else
{
count += this.Items.Length;
nodes = new UANode[count];
Array.Copy(this.Items, nodes, this.Items.Length);
}
nodes[count - 1] = exportedNode;
this.Items = nodes;
// recusively process children.
List <BaseInstanceState> children = new List <BaseInstanceState>();
node.GetChildren(context, children);
for (int ii = 0; ii < children.Count; ii++)
{
Export(context, children[ii], outputRedundantNames);
}
}
/// <summary>
/// Removes the hierachy of nodes from the cache.
/// </summary>
private void RemoveNodeHierarchyFromCache(ISystemContext context, NodeState root)
{
m_cache.Remove(root.NodeId);
List<BaseInstanceState> children = new List<BaseInstanceState>();
root.GetChildren(context, children);
for (int ii = 0; ii < children.Count; ii++)
{
RemoveNodeHierarchyFromCache(context, children[ii]);
}
}
/// <summary>
/// Adds the hierachy of nodes to the cache.
/// </summary>
private void AddNodeHierarchyToCache(ISystemContext context, NodeState root)
{
m_cache.Add(root.NodeId, root);
List<BaseInstanceState> children = new List<BaseInstanceState>();
root.GetChildren(context, children);
for (int ii = 0; ii < children.Count; ii++)
{
AddNodeHierarchyToCache(context, children[ii]);
}
}
/// <summary>
/// Convert to service object
/// </summary>
/// <param name="state"></param>
/// <param name="context"></param>
/// <param name="parent"></param>
/// <returns></returns>
public static BaseNodeModel ToNodeModel(this NodeState state, ISystemContext context,
BaseNodeModel parent = null)
{
BaseNodeModel nodeModel;
switch (state)
{
case ViewState viewState:
nodeModel = new ViewNodeModel {
ContainsNoLoops = viewState.ContainsNoLoops.ToNullable(false),
EventNotifier = viewState.EventNotifier.ToNullable(EventNotifiers.None),
};
break;
case BaseTypeState typeState:
switch (typeState)
{
case BaseVariableTypeState variableType:
switch (variableType)
{
case BaseDataVariableTypeState data:
nodeModel = new DataVariableTypeNodeModel();
break;
case PropertyTypeState property:
nodeModel = new PropertyTypeNodeModel();
break;
default:
return(null);
}
var baseVariableTypeState = nodeModel as VariableTypeNodeModel;
baseVariableTypeState.ArrayDimensions =
variableType.ArrayDimensions?.ToArray();
baseVariableTypeState.DataType =
variableType.DataType;
baseVariableTypeState.ValueRank =
variableType.ValueRank.ToNullable(ValueRanks.Scalar);
baseVariableTypeState.Value =
variableType.WrappedValue;
break;
case BaseObjectTypeState objectType:
nodeModel = new ObjectTypeNodeModel();
break;
case ReferenceTypeState referenceType:
nodeModel = new ReferenceTypeNodeModel {
Symmetric = referenceType.Symmetric.ToNullable(false),
InverseName = referenceType.InverseName
};
break;
case DataTypeState dataType:
nodeModel = new DataTypeNodeModel {
// Definition = dataType.Definition.ToDataTypeDefinition(),
Purpose = Schema.DataTypePurpose.Normal
};
break;
default:
return(null);
}
var baseTypeState = nodeModel as TypeNodeModel;
baseTypeState.IsAbstract = typeState.IsAbstract.ToNullable(false);
break;
case BaseInstanceState instanceState:
switch (instanceState)
{
case BaseVariableState variable:
switch (variable)
{
case BaseDataVariableState data:
nodeModel = new DataVariableNodeModel(parent);
break;
case PropertyState property:
nodeModel = new PropertyNodeModel(parent);
break;
default:
return(null);
}
var baseVariableState = nodeModel as VariableNodeModel;
baseVariableState.ArrayDimensions =
variable.ArrayDimensions.ToArray();
baseVariableState.DataType =
variable.DataType;
baseVariableState.ValueRank =
variable.ValueRank.ToNullable(ValueRanks.Scalar);
baseVariableState.Value =
variable.WrappedValue;
baseVariableState.AccessLevel =
variable.AccessLevel.ToNullable(AccessLevels.CurrentRead);
baseVariableState.UserAccessLevel =
variable.UserAccessLevel.ToNullable(AccessLevels.CurrentRead);
baseVariableState.IsValueType =
variable.IsValueType;
baseVariableState.Historizing =
variable.Historizing.ToNullable(false);
baseVariableState.MinimumSamplingInterval =
variable.MinimumSamplingInterval.ToNullable(0.0);
baseVariableState.ModellingRuleId =
variable.ModellingRuleId;
baseVariableState.NumericId =
variable.NumericId;
baseVariableState.ReferenceTypeId =
variable.ReferenceTypeId;
baseVariableState.StatusCode =
variable.StatusCode.ToNullable(StatusCodes.Good);
baseVariableState.Timestamp =
variable.Timestamp.ToNullable(DateTime.MinValue);
baseVariableState.TypeDefinitionId =
variable.TypeDefinitionId;
break;
case BaseObjectState obj:
nodeModel = new ObjectNodeModel(parent)
{
EventNotifier = obj.EventNotifier.ToNullable(EventNotifiers.None)
};
break;
case MethodState method:
nodeModel = new MethodNodeModel(parent)
{
UserExecutable = method.UserExecutable,
Executable = method.Executable,
MethodDeclarationId = method.MethodDeclarationId,
};
break;
default:
return(null);
}
break;
default:
return(null);
}
nodeModel.BrowseName = state.BrowseName;
nodeModel.Description = state.Description;
nodeModel.DisplayName = state.DisplayName;
nodeModel.Handle = state.Handle;
nodeModel.NodeId = state.NodeId;
nodeModel.SymbolicName = state.SymbolicName;
nodeModel.WriteMask = state.WriteMask.ToNullable(AttributeWriteMask.None);
nodeModel.UserWriteMask = state.UserWriteMask.ToNullable(AttributeWriteMask.None);
var children = new List <BaseInstanceState>();
state.GetChildren(context, children);
foreach (var child in children)
{
nodeModel.AddChild(child.ToNodeModel(context, nodeModel) as InstanceNodeModel);
}
var references = new List <IReference>();
state.GetReferences(context, references);
foreach (var reference in references)
{
nodeModel.AddReference(reference.ReferenceTypeId, reference.IsInverse,
reference.TargetId);
}
return(nodeModel);
}
/// <summary>
/// Collects instance declarations nodes from with a type.
/// </summary>
public static void CollectInstanceDeclarations(
Session session,
ComNamespaceMapper mapper,
NodeState node,
AeEventAttribute parent,
List<AeEventAttribute> instances,
IDictionary<string, AeEventAttribute> map)
{
List<BaseInstanceState> children = new List<BaseInstanceState>();
node.GetChildren(session.SystemContext, children);
if (children.Count == 0)
{
return;
}
// process the children.
for (int ii = 0; ii < children.Count; ii++)
{
BaseInstanceState instance = children[ii];
// only interested in objects and variables.
if (instance.NodeClass != NodeClass.Object && instance.NodeClass != NodeClass.Variable)
{
return;
}
// ignore instances without a modelling rule.
if (NodeId.IsNull(instance.ModellingRuleId))
{
return;
}
// create a new declaration.
AeEventAttribute declaration = new AeEventAttribute();
declaration.RootTypeId = (parent != null)?parent.RootTypeId:node.NodeId;
declaration.NodeId = (NodeId)instance.NodeId;
declaration.BrowseName = instance.BrowseName;
declaration.NodeClass = instance.NodeClass;
declaration.Description = (instance.Description != null)?instance.Description.ToString():null;
// get data type information.
BaseVariableState variable = instance as BaseVariableState;
if (variable != null)
{
declaration.DataType = variable.DataType;
declaration.ValueRank = variable.ValueRank;
if (!NodeId.IsNull(variable.DataType))
{
declaration.BuiltInType = DataTypes.GetBuiltInType(declaration.DataType, session.TypeTree);
}
}
if (!LocalizedText.IsNullOrEmpty(instance.DisplayName))
{
declaration.DisplayName = instance.DisplayName.Text;
}
else
{
declaration.DisplayName = instance.BrowseName.Name;
}
if (parent != null)
{
declaration.BrowsePath = new QualifiedNameCollection(parent.BrowsePath);
declaration.BrowsePathDisplayText = Utils.Format("{0}/{1}", parent.BrowsePathDisplayText, mapper.GetLocalBrowseName(instance.BrowseName));
declaration.DisplayPath = Utils.Format("{0}/{1}", parent.DisplayPath, instance.DisplayName);
}
else
{
declaration.BrowsePath = new QualifiedNameCollection();
declaration.BrowsePathDisplayText = Utils.Format("{0}", instance.BrowseName);
declaration.DisplayPath = Utils.Format("{0}", instance.DisplayName);
}
declaration.BrowsePath.Add(instance.BrowseName);
// check if reading an overridden declaration.
AeEventAttribute overriden = null;
if (map.TryGetValue(declaration.BrowsePathDisplayText, out overriden))
{
declaration.OverriddenDeclaration = overriden;
}
map[declaration.BrowsePathDisplayText] = declaration;
// only interested in variables.
if (instance.NodeClass == NodeClass.Variable)
{
instances.Add(declaration);
}
// recusively build tree.
CollectInstanceDeclarations(session, mapper, instance, declaration, instances, map);
}
}
/// <summary>
/// Recursively populates the data view.
/// </summary>
private void PopulateDataView(
ISystemContext context,
NodeState parent,
string parentPath)
{
List<BaseInstanceState> children = new List<BaseInstanceState>();
parent.GetChildren(context, children);
for (int ii = 0; ii < children.Count; ii++)
{
BaseInstanceState child = children[ii];
StringBuilder childPath = new StringBuilder();
if (!String.IsNullOrEmpty(parentPath))
{
childPath.Append(parentPath);
childPath.Append("/");
}
childPath.Append(child.GetDisplayText());
if (child.NodeClass == NodeClass.Variable)
{
BaseVariableState variable = (BaseVariableState)child;
if (StatusCode.IsGood(variable.StatusCode))
{
string dataType = m_session.NodeCache.GetDisplayText(variable.DataType);
if (variable.ValueRank >= 0)
{
dataType += "[]";
}
DataRow row = m_dataset.Tables[0].NewRow();
row[0] = m_dataset.Tables[0].Rows.Count;
row[1] = childPath.ToString();
row[2] = dataType;
row[3] = variable.WrappedValue;
m_dataset.Tables[0].Rows.Add(row);
}
}
PopulateDataView(context, child, childPath.ToString());
}
}
/// <summary>
/// Collects instance declarations nodes from with a type.
/// </summary>
public static void CollectInstanceDeclarations(
Session session,
ComNamespaceMapper mapper,
NodeState node,
AeEventAttribute parent,
List <AeEventAttribute> instances,
IDictionary <string, AeEventAttribute> map)
{
List <BaseInstanceState> children = new List <BaseInstanceState>();
node.GetChildren(session.SystemContext, children);
if (children.Count == 0)
{
return;
}
// process the children.
for (int ii = 0; ii < children.Count; ii++)
{
BaseInstanceState instance = children[ii];
// only interested in objects and variables.
if (instance.NodeClass != NodeClass.Object && instance.NodeClass != NodeClass.Variable)
{
return;
}
// ignore instances without a modelling rule.
if (NodeId.IsNull(instance.ModellingRuleId))
{
return;
}
// create a new declaration.
AeEventAttribute declaration = new AeEventAttribute();
declaration.RootTypeId = (parent != null)?parent.RootTypeId:node.NodeId;
declaration.NodeId = (NodeId)instance.NodeId;
declaration.BrowseName = instance.BrowseName;
declaration.NodeClass = instance.NodeClass;
declaration.Description = (instance.Description != null)?instance.Description.ToString():null;
// get data type information.
BaseVariableState variable = instance as BaseVariableState;
if (variable != null)
{
declaration.DataType = variable.DataType;
declaration.ValueRank = variable.ValueRank;
if (!NodeId.IsNull(variable.DataType))
{
declaration.BuiltInType = DataTypes.GetBuiltInType(declaration.DataType, session.TypeTree);
}
}
if (!LocalizedText.IsNullOrEmpty(instance.DisplayName))
{
declaration.DisplayName = instance.DisplayName.Text;
}
else
{
declaration.DisplayName = instance.BrowseName.Name;
}
if (parent != null)
{
declaration.BrowsePath = new QualifiedNameCollection(parent.BrowsePath);
declaration.BrowsePathDisplayText = Utils.Format("{0}/{1}", parent.BrowsePathDisplayText, mapper.GetLocalBrowseName(instance.BrowseName));
declaration.DisplayPath = Utils.Format("{0}/{1}", parent.DisplayPath, instance.DisplayName);
}
else
{
declaration.BrowsePath = new QualifiedNameCollection();
declaration.BrowsePathDisplayText = Utils.Format("{0}", instance.BrowseName);
declaration.DisplayPath = Utils.Format("{0}", instance.DisplayName);
}
declaration.BrowsePath.Add(instance.BrowseName);
// check if reading an overridden declaration.
AeEventAttribute overriden = null;
if (map.TryGetValue(declaration.BrowsePathDisplayText, out overriden))
{
declaration.OverriddenDeclaration = overriden;
}
map[declaration.BrowsePathDisplayText] = declaration;
// only interested in variables.
if (instance.NodeClass == NodeClass.Variable)
{
instances.Add(declaration);
}
// recusively build tree.
CollectInstanceDeclarations(session, mapper, instance, declaration, instances, map);
}
}
/// <summary>
/// Recursively collects the variables in a NodeState and returns a collection of BrowsePaths.
/// </summary>
public void GetBrowsePathFromNodeState(
ISystemContext context,
NodeId rootId,
NodeState parent,
RelativePath parentPath,
BrowsePathCollection browsePaths)
{
List<BaseInstanceState> children = new List<BaseInstanceState>();
parent.GetChildren(context, children);
for (int ii = 0; ii < children.Count; ii++)
{
BaseInstanceState child = children[ii];
BrowsePath browsePath = new BrowsePath();
browsePath.StartingNode = rootId;
browsePath.Handle = child;
if (parentPath != null)
{
browsePath.RelativePath.Elements.AddRange(parentPath.Elements);
}
RelativePathElement element = new RelativePathElement();
element.ReferenceTypeId = child.ReferenceTypeId;
element.IsInverse = false;
element.IncludeSubtypes = false;
element.TargetName = child.BrowseName;
browsePath.RelativePath.Elements.Add(element);
if (child.NodeClass == NodeClass.Variable)
{
browsePaths.Add(browsePath);
}
GetBrowsePathFromNodeState(context, rootId, child, browsePath.RelativePath, browsePaths);
}
}
/// <summary>
/// Adds a node to the set.
/// </summary>
public void Export(ISystemContext context, NodeState node)
{
if (node == null) throw new ArgumentNullException("node");
if (Opc.Ua.NodeId.IsNull(node.NodeId))
{
throw new ArgumentException("A non-null NodeId must be specified.");
}
UANode exportedNode = null;
switch (node.NodeClass)
{
case NodeClass.Object:
{
BaseObjectState o = (BaseObjectState)node;
UAObject value = new UAObject();
value.EventNotifier = o.EventNotifier;
if (o.Parent != null)
{
value.ParentNodeId = ExportAlias(o.Parent.NodeId, context.NamespaceUris);
}
exportedNode = value;
break;
}
case NodeClass.Variable:
{
BaseVariableState o = (BaseVariableState)node;
UAVariable value = new UAVariable();
value.DataType = ExportAlias(o.DataType, context.NamespaceUris);
value.ValueRank = o.ValueRank;
value.ArrayDimensions = Export(o.ArrayDimensions);
value.AccessLevel = o.AccessLevel;
value.UserAccessLevel = o.UserAccessLevel;
value.MinimumSamplingInterval = o.MinimumSamplingInterval;
value.Historizing = o.Historizing;
if (o.Parent != null)
{
value.ParentNodeId = ExportAlias(o.Parent.NodeId, context.NamespaceUris);
}
if (o.Value != null)
{
XmlEncoder encoder = CreateEncoder(context);
Variant variant = new Variant(o.Value);
encoder.WriteVariantContents(variant.Value, variant.TypeInfo);
XmlDocument document = new XmlDocument();
document.InnerXml = encoder.Close();
value.Value = document.DocumentElement;
}
exportedNode = value;
break;
}
case NodeClass.Method:
{
MethodState o = (MethodState)node;
UAMethod value = new UAMethod();
value.Executable = o.Executable;
value.UserExecutable = o.UserExecutable;
if (o.Parent != null)
{
value.ParentNodeId = ExportAlias(o.Parent.NodeId, context.NamespaceUris);
}
exportedNode = value;
break;
}
case NodeClass.View:
{
ViewState o = (ViewState)node;
UAView value = new UAView();
value.ContainsNoLoops = o.ContainsNoLoops;
exportedNode = value;
break;
}
case NodeClass.ObjectType:
{
BaseObjectTypeState o = (BaseObjectTypeState)node;
UAObjectType value = new UAObjectType();
value.IsAbstract = o.IsAbstract;
exportedNode = value;
break;
}
case NodeClass.VariableType:
{
BaseVariableTypeState o = (BaseVariableTypeState)node;
UAVariableType value = new UAVariableType();
value.IsAbstract = o.IsAbstract;
value.DataType = ExportAlias(o.DataType, context.NamespaceUris);
value.ValueRank = o.ValueRank;
value.ArrayDimensions = Export(o.ArrayDimensions);
if (o.Value != null)
{
XmlEncoder encoder = CreateEncoder(context);
Variant variant = new Variant(o.Value);
encoder.WriteVariantContents(variant.Value, variant.TypeInfo);
XmlDocument document = new XmlDocument();
document.InnerXml = encoder.Close();
value.Value = document.DocumentElement;
}
exportedNode = value;
break;
}
case NodeClass.DataType:
{
DataTypeState o = (DataTypeState)node;
UADataType value = new UADataType();
value.IsAbstract = o.IsAbstract;
value.Definition = Export(o.Definition, context.NamespaceUris);
exportedNode = value;
break;
}
case NodeClass.ReferenceType:
{
ReferenceTypeState o = (ReferenceTypeState)node;
UAReferenceType value = new UAReferenceType();
value.IsAbstract = o.IsAbstract;
value.InverseName = Export(new Opc.Ua.LocalizedText[] { o.InverseName });
value.Symmetric = o.Symmetric;
exportedNode = value;
break;
}
}
exportedNode.NodeId = Export(node.NodeId, context.NamespaceUris);
exportedNode.BrowseName = Export(node.BrowseName, context.NamespaceUris);
exportedNode.DisplayName = Export(new Opc.Ua.LocalizedText[] { node.DisplayName });
exportedNode.Description = Export(new Opc.Ua.LocalizedText[] { node.Description });
exportedNode.WriteMask = (uint)node.WriteMask;
exportedNode.UserWriteMask = (uint)node.UserWriteMask;
if (!String.IsNullOrEmpty(node.SymbolicName) && node.SymbolicName != node.BrowseName.Name)
{
exportedNode.SymbolicName = node.SymbolicName;
}
// export references.
INodeBrowser browser = node.CreateBrowser(context, null, null, true, BrowseDirection.Both, null, null, true);
List<Reference> exportedReferences = new List<Reference>();
IReference reference = browser.Next();
while (reference != null)
{
Reference exportedReference = new Reference();
exportedReference.ReferenceType = ExportAlias(reference.ReferenceTypeId, context.NamespaceUris);
exportedReference.IsForward = !reference.IsInverse;
exportedReference.Value = Export(reference.TargetId, context.NamespaceUris, context.ServerUris);
exportedReferences.Add(exportedReference);
reference = browser.Next();
}
exportedNode.References = exportedReferences.ToArray();
// add node to list.
UANode[] nodes = null;
int count = 1;
if (this.Items == null)
{
nodes = new UANode[count];
}
else
{
count += this.Items.Length;
nodes = new UANode[count];
Array.Copy(this.Items, nodes, this.Items.Length);
}
nodes[count-1] = exportedNode;
this.Items = nodes;
// recusively process children.
List<BaseInstanceState> children = new List<BaseInstanceState>();
node.GetChildren(context, children);
for (int ii = 0; ii < children.Count; ii++)
{
Export(context, children[ii]);
}
}
/// <summary>
/// Assigns node ids to the children based on the parent node id.
/// </summary>
public void AssignChildNodeIds(ISystemContext context, NodeState parent)
{
NodeId parentId = parent.NodeId;
// check for valid node id.
if (parentId == null || parentId.IdType != IdType.String)
{
return;
}
List<BaseInstanceState> children = new List<BaseInstanceState>();
parent.GetChildren(context, children);
for (int ii = 0; ii < children.Count; ii++)
{
BaseInstanceState child = children[ii];
if (child.SymbolicName == null)
{
continue;
}
StringBuilder builder = new StringBuilder();
builder.Append(parentId.Identifier);
builder.Append(':');
builder.Append(child.SymbolicName);
child.NodeId = new NodeId(builder.ToString(), parentId.NamespaceIndex);
AssignChildNodeIds(context, child);
}
}