JSONGroup/JSONDataset not compatible with the latest json nexus template.

[YooSunYoung]

It is not compatible with the latest json nexus templates.

For example, https://github.com/scipp/scippneutron/blob/0988a279a8b2fc480bca867bdc4a06233d0e4e2b/tests/io/json_nexus_examples/entry.json#L1-L24

Now looks like:

{
  "children": [{
      "name": "entry",
      "type": "group",
      "attributes": [{ "name": "NX_class", "dtype": "string", "values": "NXentry"}],
      "children": [{
          "module": "dataset",
          "config": { "name": "title", "values": "$TITLE$", "type": "string"}
        }]
    }]
}

We should make it compatible and update the examples.

[jokasimr]

After looking at this for a bit it seems to me like the JSON structures are quite different. The new ECDC structure has module and config properties that seems like they specify the source and kind of message that populates the dataset, those fields don't seem present in the current code in scippneutron.

What is the schema assumed by json_nexus_group?

To continue I'll need to understand what the schema is for the ECDC templates. I'll ask them. Unless someone else already knows?

[SimonHeybrock]

I think this was clarified in our f2f, or is there still some unclear aspect?

[jokasimr]

This comment was posted before we talked.

However, I'm still not sure what to do there. Maybe we can have a quick call today to figure it out.

[jokasimr]

Should we continue to support the old json schema for specifying nexus structure, or should we only support the new schema?

[SimonHeybrock]

Only the new.