Using Milo for custom OPC UA Modeler

[rubiomiguel06]

I am working on an IDE done with eclipse and Java. I want to add an OPC UA Modeler to it, where a user can import NodeSet2.xml files (companion specifications), create objects, variables, etc. and lastly export it to a NodeSet2.xml file. Moreover, some custom mappings of IDE variables to OPC UA variables should be defined within the <Extensions> tag of the exported NodeSet2.xml.

• Does digitalpetri/uanodeset support exporting to NodeSet2.xml file as well? I could only find so far the loading of a NodeSet2.xml file. Would exporting imply only the reverse path of the importing?

• Are Extensions supported in Milo?

• When working with the .NETStandard OPC Foundation SDK, my entry point for my modeler was the NodeTable class, which held the nodes, namespacetable, servertable and typetree. Which class do you consider could be the best one to hold my address space in Milo? Considering that my end goal is to get a NodeSet2.xml file that represents my address space (meaning, I don't need any server/client communication featueres, etc)

and lastly, is Milo ready for enterprise software?

Thanks and greetings, Miguel

[kevinherron]

Exporting a UANodeSet file is just a matter of creating an org.opcfoundation.ua.UANodeSet and then marshalling it to XML using JAXB. The generated classes are all there for you as part of the uanodeset-core module. There's no other explicit support for it yet because generating UANodeSet XML files hasn't been something I've needed or focused on yet.

Are Extensions supported in Milo?

No, and I'm not sure Milo is the place that would even have the support. It would probably just be the NodeSet class or something like that. They're just extra vendor-specific XML elements inside a UANodeSet XML file.

    ListOfExtensions extensions = nodeSet.getExtensions();
    for (ListOfExtensions.Extension extension : extensions.getExtension()) {
      Object any = extension.getAny();
      // do something?
      // not sure what JAXB is doing with these or what the type would be.
    }

Which class do you consider could be the best one to hold my address space in Milo? Considering that my end goal is to get a NodeSet2.xml file that represents my address space (meaning, I don't need any server/client communication featueres, etc)

This is what NodeSetNodeLoader, NodeSetAddressSpace, and NodeSetNamespace are for. The demo server loads a custom UANodeSet XML file: https://github.com/digitalpetri/opc-ua-demo-server/blob/1.0/src/main/java/com/digitalpetri/opcua/server/namespace/test/DataTypeTestNamespace.java

and lastly, is Milo ready for enterprise software?

I don't know what this means :)

It's certainly both widely deployed and used at companies you would call "enterprise".