Multiple AAS in AAX package

[StenGruener]

Dear team,

# For adding a second AAS to the package, we can simply call `write_aas()` again.
# Warning: This will create a second XML/JSON part in the AASX Package, which is compliant with the "Details of the
# Asset Administration Shell" standard up to version 2.0.1, but not supported by AASX Package Explorer.

could someone update me on a status of AASX-package-explorer versions of multiple AAS in the AASX package?

[s-heppner]

The current state of the write_aas function in aas.adapter.aasx.AASXWriter for version 2.0.1 of the meta-model (Release 0.2.2) does still write seperate AASs in seperate parts.
For questions about the AASX package explorer, please refer to the project: https://github.com/admin-shell-io/aasx-package-explorer, as we are not affiliated.

In the upcoming relase for version 3.0RC02 of the meta-model, the function write_aas() is going to write all the data into one aas-spec (aasx/data.xml or aasx/data.json) file in accordance to the specification, therefore the problem should not arise anymore.

[StenGruener]

Any idea on the roadmap for "the upcoming release for version 3.0RC02"?

[s-heppner]

Realistically, it might still need 2-3 months to the release, considering the upcoming examination phase at university and following summer vacations.
But you're very welcome to try out the WIP branch. Most changes should already be present at this point, with the main missing features being the SubmodelElementStructs and SubmodelElementLists.

[jorgegomezjumh]

Dear team,

# For adding a second AAS to the package, we can simply call `write_aas()` again.
# Warning: This will create a second XML/JSON part in the AASX Package, which is compliant with the "Details of the
# Asset Administration Shell" standard up to version 2.0.1, but not supported by AASX Package Explorer.

could someone update me on a status of AASX-package-explorer versions of multiple AAS in the AASX package?

I am attempting to write two or more AAS in one AASX file, but I am unable to achieve this by creating another object store. Additionally, I have tried placing both AAS in the same object store, calling 'write_aas()' again, and using a different 'aas_id.' However, both methods yield the same result. I successfully generate an AASX file that opens correctly in AASX Package Explorer, but it only contains the first AAS.

I am still working with version 2, as it is currently impossible for me to transition to version 3. I am facing difficulties in reading the AASX file generated by the aasx-package-explorer.2023-11-17.alpha in basyx-python-sdk-main using AASXReader. Although I attempted to use the AASFix repository, I am unable to read the AASX file of version 3.

[s-heppner]

I am attempting to write two or more AAS in one AASX file

Can you try to add several AAS Identifiers to the AASXWriter.write_aas() function?

As you can see, the aas_ids parameter actually allows for Iterable:

    def write_aas(self,
                  aas_ids: Union[model.Identifier, Iterable[model.Identifier]],
                  object_store: model.AbstractObjectStore,
                  file_store: "AbstractSupplementaryFileContainer",
                  write_json: bool = False) -> None:

I think it could look something like this, if you place all AAS in the same ObjectStore:

aas_ids = []
for obj in self.objStore:
    if isinstance(obj, AssetAdministrationShell):
        aas_ids.append(obj.id)
writer.write_aas(aas_ids, ...

I am facing difficulties in reading the AASX file generated by the aasx-package-explorer.2023-11-17.alpha

I'm sorry to hear that. Can you provide the error messages? We're not affiliated with the AASX Package explorer, nor the "AASFix" tool, but if it turns out a bug on our end, we'll fix it of course.

[jorgegomezjumh]

I have tried to write using this code in v3. It seems that the aasx file is written but when you try to open in AASX Package Explorer this errors appears to me:

When I try to use the AASFix another errors appears to me:

When using the reader function, I've encountered various errors while attempting to read the AASX file exported by AASX Package Explorer version 3. Even after applying AASFix, the issues persist:

With normal aasx:

After AASFix:

[s-heppner]

Looking at your error messages in the last image you provided, it would appear something went wrong in the installation of your basyx-python library.

As you can see:

... is of type <class 'basyx.aas.model.base.ModelReference'> expected <class 'aas.model.base.ModelReference'>

the former is definitely what it is supposed to be.

So, I suspect you installed our basyx library at the level of "aas", when it should have been installed at the directory level above, starting with "basyx.aas".
I'm not sure how you did achieve this, so my suggestion is to completely uninstall basyx and reinstall it using

pip install basyx-python-sdk

which will install v1.0.0, that represents v3.0 of the spec.

What I would also heavily suggest to read into Python virtual environments and using those on a project level basis.

As a last friendly tip, please provide stacktraces and error messages as text in the future, as that is easier to read through than screenshots and can be searched through.

[jorgegomezjumh]

Thank you very much.

The problem was with the files and the version, using this new basyx-python-sdk after using AASFix tool I can read the aasx file exported by the AASX. Package Explorer v3.

[s-heppner]

Great, I'm happy I could help!
I'll close this issue now, but feel free to reopen it, if you have any further questions.