/// <summary>
/// Loads a nodeset from a stream.
/// </summary>
/// <param name="istrm">The input stream.</param>
/// <returns>The set of nodes</returns>
public static NodeSet Read(Stream istrm)
{
using (XmlReader reader = XmlReader.Create(istrm, Utils.DefaultXmlReaderSettings()))
{
DataContractSerializer serializer = new DataContractSerializer(typeof(NodeSet));
return(serializer.ReadObject(reader) as NodeSet);
}
}
/// <summary>
/// Reads the schema information from a XML document.
/// </summary>
public void LoadFromXml(ISystemContext context, Stream istrm, bool updateTables)
{
ServiceMessageContext messageContext = new ServiceMessageContext();
messageContext.NamespaceUris = context.NamespaceUris;
messageContext.ServerUris = context.ServerUris;
messageContext.Factory = context.EncodeableFactory;
using (XmlReader reader = XmlReader.Create(istrm, Utils.DefaultXmlReaderSettings()))
{
XmlQualifiedName root = new XmlQualifiedName("ListOfNodeState", Namespaces.OpcUaXsd);
XmlDecoder decoder = new XmlDecoder(null, reader, messageContext);
NamespaceTable namespaceUris = new NamespaceTable();
if (!decoder.LoadStringTable("NamespaceUris", "NamespaceUri", namespaceUris))
{
namespaceUris = null;
}
// update namespace table.
if (updateTables)
{
if (namespaceUris != null && context.NamespaceUris != null)
{
for (int ii = 0; ii < namespaceUris.Count; ii++)
{
context.NamespaceUris.GetIndexOrAppend(namespaceUris.GetString((uint)ii));
}
}
}
StringTable serverUris = new StringTable();
if (!decoder.LoadStringTable("ServerUris", "ServerUri", context.ServerUris))
{
serverUris = null;
}
// update server table.
if (updateTables)
{
if (serverUris != null && context.ServerUris != null)
{
for (int ii = 0; ii < serverUris.Count; ii++)
{
context.ServerUris.GetIndexOrAppend(serverUris.GetString((uint)ii));
}
}
}
// set mapping.
decoder.SetMappingTables(namespaceUris, serverUris);
decoder.PushNamespace(Namespaces.OpcUaXsd);
NodeState state = NodeState.LoadNode(context, decoder);
while (state != null)
{
this.Add(state);
state = NodeState.LoadNode(context, decoder);
}
decoder.Close();
}
}
/// <summary>
/// Creates the configuration object from the configuration section.
/// </summary>
/// <param name="parent">The parent object.</param>
/// <param name="configContext">The configuration context object.</param>
/// <param name="section">The section as XML node.</param>
/// <returns>The created section handler object.</returns>
public object Create(object parent, object configContext, System.Xml.XmlNode section)
{
if (section == null)
{
throw new ArgumentNullException(nameof(section));
}
XmlNode element = section.FirstChild;
while (element != null && typeof(XmlElement) != element.GetType())
{
element = element.NextSibling;
}
using (XmlReader reader = XmlReader.Create(new StringReader(element.OuterXml), Utils.DefaultXmlReaderSettings()))
{
DataContractSerializer serializer = new DataContractSerializer(typeof(ConfigurationLocation));
ConfigurationLocation configuration = serializer.ReadObject(reader) as ConfigurationLocation;
return(configuration);
}
}