Add element to model created with Capella 6.0.0 failed

[Andreas Neubauer]

I have a model created with Capella 6.0.0 and want to add a component.

I used the following code to do this.

model = capellambse.MelodyModel(path_to_model, jupyter_untrusted=True)
newitem = model.pa.root_component.owned_components.create(name='Test')

This leads to the following error:

ValueError: Namespace 'org.polarsys.capella.core.data.pa' already registered with URI 'http://www.polarsys.org/capella/core/pa/6.0.0'

By checking the source I found out that only the first plugin version is added to the NAMESPACES dict.
Changing the order of the versions and the script runs without any problem.

file: _namespaces.py

        "org.polarsys.capella.core.data.pa": Plugin(
            "http://www.polarsys.org/capella/core/pa/", ("6.0.0", "5.0.0")
        ),

Is there a way to define which version shall be loaded to the global NAMESPACES dict?

Regards,
Andreas

[Martin Lehmann]

This unfortunately comes down to how capellambse handles namespaces in general, and is somewhat difficult to solve properly in place. However, we're currently working on a rewrite of the core model component, which will address this and several other issues.

#277 changed the ValueError you're seeing to a warning message, which should at least alleviate the immediate issue of it crashing. Please update with pip install -U capellambse and you should be good to go.

[Andreas Neubauer]

Thanks for the fast reply. Its working!