Bug: Error when loading collection that was saved in previous python session

[ehennestad]

I am trying to load a collection from a single json-ld file created from the example in the README.

If I do this from a new python session, I get the following error:

ValueError                                Traceback (most recent call last)
Cell In [1], line 3
      1 import openminds
      2 fp2 = \"/Users/Eivind/Documents/MATLAB/openMINDS_MATLAB/demo/crew_members.jsonld\"
----> 3 collection2 = openminds.Collection().load(\"my_collection.jsonld\")

File ~/Code/EBRAINS/openMINDS/openMINDS_Python/openminds/collection.py:162, in Collection.load(self, *paths)
    160 if \"@type\" in item:
    161     print(lookup_type)
--> 162     cls = lookup_type(item[\"@type\"])
    163     node = cls.from_jsonld(item)
    164 else:
    165     # allow links to metadata instances outside this collection

File ~/Code/EBRAINS/openMINDS/openMINDS_Python/openminds/registry.py:55, in lookup_type(class_type, version)
     53         return registry[\"types\"][version][class_type]
     54     else:
---> 55         raise ValueError(f\"Type '{class_type}' was not found in the registry for version {version}.\")
     56 else:
     57     raise TypeError(\"class type must be a string\")

ValueError: Type 'https://openminds.ebrains.eu/core/Person' was not found in the registry for version latest."

The registry has not been initialised at this point and does not contain any types.

[Peyman-N]

Hi @ehennestad, could you please import the openMINDS core before loading the collection and check whether the error persists?
import openminds.latest.core

[ehennestad]

@Peyman-N That works!

Does that mean I have to explicitly import all the models used by a collection with the right version in order to load the collection?

[apdavison]

Does that mean I have to explicitly import all the models used by a collection with the right version in order to load the collection?

at present, that is the case, but we should fix this, it shouldn't be necessary.