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aas-core-works / aas-core-meta

Provide formalized meta-models for Asset Administration Shell (AAS).
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Add Pt. 2 classes #296

Open arnoweiss opened 9 months ago

arnoweiss commented 9 months ago

Multiple times, I've faced the issue that I was looking to validate the schema of incoming requests carrying AssetAdministrationShellDescriptor or SubmodelDescriptor objects - both specified in Pt. 2. The only machine-readable definition is contained in the openApi-files of the aas-specs-api repository. However, the openApi file format has only a fraction of the descriptive power that shacl/xsd/json-schema have. Adding the classes here would also with the push of a button allow to generate examples.

Have y'all thought about adding this? What was the reasoning for leaving them out?

mristin commented 9 months ago

Hi @arnoweiss , I believe that this has been discussed multiple times in the IDTA workgroup.

@s-heppner @sebbader-sap can you maybe provide more information?

mristin commented 9 months ago

@arnoweiss we are also working on formalizing the meta-model part 2 and then transpiling it into server stubs and client implementations (in different languages × different protocols).

It's not only about data structures, but we also want to transpile the pre and postconditions of the operations.

arnoweiss commented 9 months ago

All that is great and will make server-development a lot easier. However, I'm just looking for json-schemas to validate shell-descriptors. That's very basic but still unavailable to the community. Will those schemas be a byproduct of generating the server-stubs?

mristin commented 9 months ago

@arnoweiss wrote:

Will those schemas be a byproduct of generating the server-stubs?

Yes, we plan that as well (+ OpenAPI, OPC UA nodeset and other interface schemas).

In the meanwhile, if you already want to start working on it, we can schedule a call and synchronize.