/// <summary>
/// 修改节点树(添加节点,删除节点,修改节点名称)
/// </summary>
/// <param name="nodes"></param>
public void UpdateNodesAttribute(List <OpcuaNode> nodes)
{
//修改或创建根节点
var scadas = nodes.Where(d => d.NodeType == NodeType.Scada);
foreach (var item in scadas)
{
FolderState scadaNode = null;
if (!_folderDic.TryGetValue(item.NodePath, out scadaNode))
{
//如果根节点都不存在 那么整个树都需要创建
FolderState root = CreateFolder(null, item.NodePath, item.NodeName);
root.AddReference(ReferenceTypes.Organizes, true, ObjectIds.ObjectsFolder);
_references.Add(new NodeStateReference(ReferenceTypes.Organizes, false, root.NodeId));
root.EventNotifier = EventNotifiers.SubscribeToEvents;
AddRootNotifier(root);
CreateNodes(nodes, root, item.NodePath);
_folderDic.Add(item.NodePath, root);
AddPredefinedNode(SystemContext, root);
continue;
}
else
{
scadaNode.DisplayName = item.NodeName;
scadaNode.ClearChangeMasks(SystemContext, false);
}
}
//修改或创建目录(此处设计为可以有多级目录,上面是演示数据,所以我只写了三级,事实上更多级也是可以的)
var folders = nodes.Where(d => d.NodeType != NodeType.Scada && !d.IsTerminal);
foreach (var item in folders)
{
FolderState folder = null;
if (!_folderDic.TryGetValue(item.NodePath, out folder))
{
var par = GetParentFolderState(nodes, item);
folder = CreateFolder(par, item.NodePath, item.NodeName);
AddPredefinedNode(SystemContext, folder);
par.ClearChangeMasks(SystemContext, false);
_folderDic.Add(item.NodePath, folder);
}
else
{
folder.DisplayName = item.NodeName;
folder.ClearChangeMasks(SystemContext, false);
}
}
//修改或创建测点
//这里我的数据结构采用IsTerminal来代表是否是测点 实际业务中可能需要根据自身需要调整
var paras = nodes.Where(d => d.IsTerminal);
foreach (var item in paras)
{
BaseDataVariableState node = null;
if (_nodeDic.TryGetValue(item.NodeId.ToString(), out node))
{
node.DisplayName = item.NodeName;
node.Timestamp = DateTime.Now;
node.ClearChangeMasks(SystemContext, false);
}
else
{
FolderState folder = null;
if (_folderDic.TryGetValue(item.ParentPath, out folder))
{
node = CreateVariable(folder, item.NodePath, item.NodeName, DataTypeIds.Double, ValueRanks.Scalar);
AddPredefinedNode(SystemContext, node);
folder.ClearChangeMasks(SystemContext, false);
_nodeDic.Add(item.NodeId.ToString(), node);
}
}
}
/*
* 将新获取到的菜单列表与原列表对比
* 如果新菜单列表中不包含原有的菜单
* 则说明这个菜单被删除了 这里也需要删除
*/
List <string> folderPath = _folderDic.Keys.ToList();
List <string> nodePath = _nodeDic.Keys.ToList();
var remNode = nodePath.Except(nodes.Where(d => d.IsTerminal).Select(d => d.NodeId.ToString()));
foreach (var str in remNode)
{
BaseDataVariableState node = null;
if (_nodeDic.TryGetValue(str, out node))
{
var parent = node.Parent;
parent.RemoveChild(node);
_nodeDic.Remove(str);
}
}
var remFolder = folderPath.Except(nodes.Where(d => !d.IsTerminal).Select(d => d.NodePath));
foreach (string str in remFolder)
{
FolderState folder = null;
if (_folderDic.TryGetValue(str, out folder))
{
var parent = folder.Parent;
if (parent != null)
{
parent.RemoveChild(folder);
_folderDic.Remove(str);
}
else
{
RemoveRootNotifier(folder);
RemovePredefinedNode(SystemContext, folder, new List <LocalReference>());
}
}
}
}