Unified Automation Forum

Hello,
This is regarding this FAQ.
https://forum.unified-automation.com/viewtopic.php?f=34&t=316

Question:
With deleteUaNode(pNodeToDelete, OpcUa_True, OpcUa_True, OpcUa_True) with all flags set to True can delete all children recursively?

Background:
I was trying [server_lesson03] from [UaSdkCppBundleSource\examples\server_gettingstarted] with C++ based OPC UA Client Server SDK (Bundle) v1.7.4.
The following two modifications were made.

(1) Only use AIR_CONDITIONER type and did not use FURNACE type.
#define NUMBER_AIRCONDITIONER 10
#define NUMBER_FURNACES 0

(2) Only two Variables (PowerConsumption) and (State) are added and the tree will be something like below.
> Root
>> Objects
>>> BuildingAutomation
>>>>> AirConditioner_1
>>>>>> PowerConsumption
>>>>>> State

Delete folder:
UaNodeId folderNodeId("BuildingAutomation", getNameSpaceIndex());
UaNode* folderNode = getNode(folderNodeId);
if (folderNode != NULL)
{
deleteUaNode(folderNode, OpcUa_True, OpcUa_True, OpcUa_True);
folderNode->releaseReference();
folderNode = NULL;
}

Above method will delete everything including AirConditioner_1 node?
After I have tried to delete folder, it seems I still need to delete "AirConditioner_1" to re-create the same nodes.

Thank you.

Hello ssmaung,

if the deleteAllChildren flag is set all child nodes are deleted.
Here child nodes means:
All nodes that are reachable by following forward references that are of type "HasChild" or any subtype. The AirConditioner objects however are referenced by references of type "Organizes".
see:
http://documentation.unified-automation.com/uasdkcpp/1.7.4/html/classNodeManagerUaNode.html#a42f15b979114c6ca9026683433d6ac5c

Dear Support Team,
Thank you very much.
It is working as expected now after modifying child nodes to HasComponent or HasProperty.