Implementation of sparqlquery, a script for easy sparql queries (draft)

[WhiteGobo]

Try handling to mirror that of rdfpipe. Choosing argparse over optargs as described in documentation of optargs.

support for multiple local files and single remote. remote support authentication (--username and --password).

Output will be either controlled by --format.
Sparql query can be provided by input with -q/--query or with a file with --queryfile.

Summary of changes

Created script sparqlquery and provided it via pyproject.toml
Issue for this feature #3280

Checklist

I can add addional things to the checklist, if i forgot something.

• Default to readable output

• Testing for

  • works on local files from command line
  • on local files
  • on sparql remotes
  • SELECT
  • ASK
  • DESCRIBE
  • INSERT
  • authentication

• Checked that all tests and type checking passes.

• If the change adds new features or changes the RDFLib public API:

  • Created an issue to discuss the change and get in-principle agreement.
  • Considered adding an example in ./examples.

• If the change has a potential impact on users of this project:

  • Added or updated tests that fail without the change.
  • Updated relevant documentation to avoid inaccuracies.
  • Considered adding additional documentation.

• Considered granting push permissions to the PR branch,
  so maintainers can fix minor issues and keep your PR up to date.

[WhiteGobo]

example usage:

sparqlquery path/to/data.ttl -q "SELECT ?x WHERE {?x a foaf:Person. }"
sparqlquery path/to/data.ttl -q "SELECT ?x WHERE {?x a foaf:Person. }" --format json     
sparqlquery path/to/data.ttl -q "SELECT ?x WHERE {?x a foaf:Person. }" --print "custom print: {x.value}" --only-first
sparqlquery path/to/data.ttl --query-file query.spl
sparqlquery data1.ttl data2.ttl --query-file query.spl
sparqlquery http://example.com/sparqlendpoint --query-file query.spl
sparqlquery http://example.com/sparqlendpoint --query-file query.spl --username user --password secret