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11:26, EET
March 16, 2017
Offline
Hi,
just would like to ask if it is possible to have a node at muliple location in the objects tree?
e.g. Node1 is located at Folder-A and at Folder-B
   + Folder-A
     + Node1 (ns=1;s=Node1)
     + NodeX (ns=1;s=NodeX)
   + Folder-B
     + Node1 (ns=1;s=Node1)
     + NodeY (ns=1;s=NodeY)
 + Types
 + Views
Thanks!
12:11, EET
April 3, 2012
Offline
Hi,
Yes, it is basically more of a “network” than a “tree”, except that the Root (under which the Objects/Types/Views nodes are) node is the root of hierarchical references (at least like 99% of the time, there are some weird things in the old DataTypeDictionary references etc.). You can even have loops. Note that the NodeClass/TypeDefinition/ReferenceType can limit what is allowed.
But at least making a “filesystem” out of folders and refering stuff “at will” with the Organizes ReferenceType (https://reference.opcfoundation.org/Core/docs/Part3/7.11/) from them can refer basically any node.
And I guess the only easy way unfortunately is to read at least Part3+Part5 for the different ReferenceType’s (or any companion specification if using ReferenceTypes from those) rules.
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