OpenRefine / OpenRefine/SparqlExtension

Linked Data Fragments importer

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enhancement import
Dominant language
Java
Stars
6
Forks
3
PR merge metrics
No merged PRs in 30d

Description

Some RDF triple stores offer a Linked Data Fragments endpoint. This is a query interface which is much simpler than SPARQL and is therefore often faster and more reliable (since it is cheaper for the service). Importantly, it supports paging, which lets a client download large sets of results without running into timeouts.

Proposed solution

It would be nice if OpenRefine supported importing from a LDF endpoint, similarly to how SQL databases are supported.

Alternatives considered

This is similar to the request for a SPARQL importer, OpenRefine/OpenRefine#1212 (because a lot of services offer both endpoints).

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reviewing how OpenRefine supports importing from SQL databases and compare that with the Linked Data Fragments endpoint described here. The related SPARQL importer request, OpenRefine/OpenRefine#1212, may clarify expected integration. Done should include a working importer that can page through large LDF result sets reliably.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
api, data
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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