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2017.1 Browse doesn t works anymore in delphi

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alr1976
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07 Sep 2017 09:04 #5500 by alr1976

Replied by alr1976 on topic 2017.1 Browse doesn t works anymore in delphi

WORKS!!!

THANK YOU!!!

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support
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06 Sep 2017 14:54 #5497 by support

Replied by support on topic 2017.1 Browse doesn t works anymore in delphi

I do not currently have Delphi easily available to test this out. But I have written "...creating a UANodeId object, assigning "References" string to its StandardName property, and then calling Add on the UABrowseParameters.ReferenceTypeIds, with that node as an argument." and you are not doing anything alike. It should be something similar to do the following:

var ReferencesNodeId: _UANodeId;
...
ReferencesNodeId := CoUANodeId.Create;
ReferencesNodeId.StandardName := 'References';
BrowseParameters.ReferenceTypeIds.Add(ReferencesNodeId);

Regards

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alr1976
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06 Sep 2017 13:17 - 06 Sep 2017 14:50 #5491 by alr1976

Replied by alr1976 on topic 2017.1 Browse doesn t works anymore in delphi

ok I have changed my code but I have same result:

var
  BrowseParameters: _UABrowseParameters;
  BrowsePathParser: _UABrowsePathParser;
  Client: TEasyUAClient;
  Count: Cardinal;
  Element: OleVariant;
  EndpointDescriptor: _UAEndpointDescriptor;
  NodeDescriptor: _UANodeDescriptor;
  NodeElement: _UANodeElement;
  NodeElementEnumerator: IEnumVariant;
  NodeElements: _UANodeElementCollection;
begin
      EndpointDescriptor := CoUAEndpointDescriptor.Create;
   EndpointDescriptor.UrlString := 'opc.tcp://127.0.0.1:49320/'
   NodeDescriptor := CoUANodeDescriptor.Create;
   NodeDescriptor.NodeId.StandardName := 'Objects';
   BrowseParameters := CoUABrowseParameters.Create;
   BrowseParameters.NodeClasses := UANodeClass_Object;
   BrowseParameters.ReferenceTypeIds.Add(NodeDescriptor.NodeId);
   NodeElements := Client.BrowseNodes(
     EndpointDescriptor,
     NodeDescriptor,
     BrowseParameters);
     NodeElementEnumerator := NodeElements.GetEnumerator;
    while (NodeElementEnumerator.Next(1, Element, Count) = S_OK) do
   begin
    NodeElement := IUnknown(Element) as _UANodeElement;
     if Assigned(NodeElement) then
     Showmessage(NodeElement.BrowseName.ToString);
   end;

Last edit: 06 Sep 2017 14:50 by support.

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alr1976
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06 Sep 2017 06:11 #5487 by alr1976

Replied by alr1976 on topic 2017.1 Browse doesn t works anymore in delphi

Hi!

I don t understand how to do it.
I have add:
BrowseParameters.ReferenceTypeIds.Add(nodedescriptor);
In my example(above) but doesn t work
Thanks,Alessandro

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support
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05 Sep 2017 14:28 - 06 Sep 2017 14:55 #5485 by support

Replied by support on topic 2017.1 Browse doesn t works anymore in delphi

The default content of UABrowseParameters.ReferenceTypeIds have changed in version 2017.1.
Earlier, it used to contain a collection with a single element, UAReferenceTypeIds.References. Now it is empty, and the developer needs to specify the desired reference types explicitly.

This should be doable e.g. by creating a UANodeId object, assigning "References" string to its StandardName property, and then calling Add on the UABrowseParameters.ReferenceTypeIds, with that node as an argument.

Best regards

Last edit: 06 Sep 2017 14:55 by support.

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05 Sep 2017 12:08 #5483 by support

Replied by support on topic 2017.1 Browse doesn t works anymore in delphi

I will reply. Please be a bit patient.

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alr1976
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05 Sep 2017 07:55 #5482 by alr1976

Replied by alr1976 on topic 2017.1 Browse doesn t works anymore in delphi

any news?

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alr1976
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04 Sep 2017 13:26 - 05 Sep 2017 14:21 #5480 by alr1976

2017.1 Browse doesn t works anymore in delphi was created by alr1976

Hi!

I have used in 2016.2 to retrieve root node and work well but after update last version doesn t work anymore in Delphi.

My function is:

var
  BrowseParameters: _UABrowseParameters;
  BrowsePathParser: _UABrowsePathParser;
  Client: TEasyUAClient;
  Count: Cardinal;
  Element: OleVariant;
  EndpointDescriptor: _UAEndpointDescriptor;
  NodeDescriptor: _UANodeDescriptor;
  NodeElement: _UANodeElement;
  NodeElementEnumerator: IEnumVariant;
  NodeElements: _UANodeElementCollection;
begin
      EndpointDescriptor := CoUAEndpointDescriptor.Create;
   EndpointDescriptor.UrlString := 'opc.tcp://127.0.0.1:49320/'
   NodeDescriptor := CoUANodeDescriptor.Create;
   NodeDescriptor.NodeId.StandardName := 'Objects';
   BrowseParameters := CoUABrowseParameters.Create;
   BrowseParameters.NodeClasses := UANodeClass_Object;
   NodeElements := Client.BrowseNodes(
     EndpointDescriptor,
     NodeDescriptor,
     BrowseParameters);
     NodeElementEnumerator := NodeElements.GetEnumerator;
    while (NodeElementEnumerator.Next(1, Element, Count) = S_OK) do
   begin
    NodeElement := IUnknown(Element) as _UANodeElement;
     if Assigned(NodeElement) then
     Showmessage(NodeElement.BrowseName.ToString);
   end;

I have now always empty nodes

Last edit: 05 Sep 2017 14:21 by support.

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