/// <summary>
/// Exports the node identifier.
/// </summary>
/// <param name="nodeId">The node identifier as the string.</param>
/// <param name="defaultValue">The default value.</param>
/// <param name="traceEvent">An <see cref="Action" /> delegate is used to trace event as the <see cref="TraceMessage" />.</param>
/// <returns>The identifier an object of <see cref="System.Xml.XmlQualifiedName" /> or null if <paramref name="nodeId" /> has default value.</returns>
internal XmlQualifiedName ExportBrowseName(string nodeId, NodeId defaultValue, Action<TraceMessage> traceEvent)
{
NodeId _id = ImportNodeId(nodeId, true, traceEvent);
if (_id == defaultValue)
return null;
return m_AddressSpaceContext.ExportBrowseName(_id, traceEvent);
}
internal UANodeContext UTTryGetUANodeContext(NodeId nodeId)
{
return TryGetUANodeContext(nodeId, x => { });
}
private UANodeContext TryGetUANodeContext(NodeId nodeId, Action<TraceMessage> traceEvent)
{
UANodeContext _ret;
if (!m_NodesDictionary.TryGetValue(nodeId.ToString(), out _ret))
{
traceEvent(TraceMessage.BuildErrorTraceMessage(BuildError.NodeIdNotDefined, String.Format("References to node with NodeId: {0} is omitted during the import.", nodeId)));
return null;
}
if (_ret.UANode == null)
{
traceEvent(TraceMessage.BuildErrorTraceMessage(BuildError.NodeIdNotDefined, String.Format("NodeId: {0} is omitted during the import.", nodeId)));
return null;
}
return _ret;
}
internal UANodeContext GetOrCreateNodeContext(NodeId nodeId, UAModelContext modelContext, Action<TraceMessage> traceEvent)
{
UANodeContext _ret;
string _idKey = nodeId.ToString();
if (!m_NodesDictionary.TryGetValue(_idKey, out _ret))
{
_ret = new UANodeContext(this, modelContext, nodeId);
m_NodesDictionary.Add(_idKey, _ret);
}
return _ret;
}
/// <summary>
/// Search the address space to find the node <paramref name="nodeId" /> and returns <see cref="XmlQualifiedName" />
/// encapsulating the <see cref="UANode.BrowseName" /> of this node if exist. Returns<c>null</c> otherwise.
/// </summary>
/// <param name="nodeId">The identifier of the node to find.</param>
/// <param name="traceEvent">Encapsulates an action used to trace events.</param>
/// <returns>An instance of <see cref="XmlQualifiedName" /> representing the <see cref="UANode.BrowseName" /> of the node indexed by <paramref name="nodeId" /></returns>
internal XmlQualifiedName ExportBrowseName(NodeId nodeId, Action<TraceMessage> traceEvent)
{
UANodeContext _context = TryGetUANodeContext(nodeId, traceEvent);
if (_context == null)
return null;
return _context.ExportNodeBrowseName();
}
private bool IsDefault(NodeId node)
{
NodeId _default = NodeId.Null;
switch (ReferenceKind)
{
case ReferenceKindEnum.HasComponent:
_default = ReferenceTypeIds.HasComponent;
break;
case ReferenceKindEnum.HasTypeDefinition:
_default = ReferenceTypeIds.HasTypeDefinition;
break;
case ReferenceKindEnum.HasSubtype:
_default = ReferenceTypeIds.HasSubtype;
break;
case ReferenceKindEnum.HasProperty:
_default = ReferenceTypeIds.HasProperty;
break;
default:
break;
}
return _default == node;
}
internal NodeId ImportNodeId(string nodeId, bool lookupAlias, Action<TraceMessage> traceEvent)
{
if (String.IsNullOrEmpty(nodeId))
return NodeId.Null;
// lookup alias.
if (lookupAlias)
nodeId = LookupAlias(nodeId);
// parse the string.
NodeId _nodeId = NodeId.Parse(nodeId);
if (_nodeId.NamespaceIndex > 0)
{
ushort namespaceIndex = ImportNamespaceIndex(_nodeId.NamespaceIndex);
_nodeId = new NodeId(_nodeId.IdentifierPart, namespaceIndex);
}
return _nodeId;
}