Openrefine: Add JSON-LD support

[msaby]

Is your feature request related to a problem or area of OpenRefine? Please describe.
It could be nice to add a JSON-LD importer, for semantic data stored in that format. In OR v3, you can import JSON-LD data with the JSON importer, but it wont be parsed as semantic data, whereas XML/RDF data is parsed as semantic data, and not imported as ordinary XML.

Describe the solution you'd like
With the same "semantic" dataset expressed in different format (RDF/XML, N3, Turtle, JSON-LD...) we should get the same result in Openrefine.
From UX point of view, maybe we could rename the importer menu "Semantic data" with options : "Semantic data (RDF/XML)", "Semantic data (JSON-LD)", etc., to make it clear that it is not ordinary JSON and XML data?

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Add any other context or screenshots about the feature request here.

[ostephens]

Hi @msaby - thanks for this.

I've done some quick testing, and it looks like adding support for import JSON-LD is trivial.
We could also easily add support for Turtle / *.ttl files

I'm happy to work on adding this support

I don't completely understand what you mean when you sa:

From UX point of view, maybe we could rename the importer menu "Semantic data" with options : "Semantic data (RDF/XML)", "Semantic data (JSON-LD)", etc., to make it clear that it is not ordinary JSON and XML data?

Do you mean just changing the labels on the import screen in the "Parse data as" section?

I'm not so keen on using the term "Semantic data" here as that seems quite a general label. The approach so far is to use the file format, and my first thought is to keep to that approach. Have I misunderstood what you mean here? Could you give an example?

Thanks

[msaby]

Well, the "semantic data" idea is probably a bad one... Implementing JSON-LD import is sufficient

[ostephens]

Done! See #1783

[wetneb]

@msaby if you get a chance to try OpenRefine from the master branch and check that it works for you, it would be great! We will soon make a new release.