Publish SPARQL client in Rust
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	dereckson
	Jan 14 2023, 21:10

Description

FANTOIR uses SQARQL to query data from Wikidata.

Did you know there is no standalone SPARQL client crate currently available in Rust?

Our code uses the Tpt library sparesults, from the Oxigraph project, but there is no client component (as of January 2023).

Plan is to:

move services/sparql.rs to a standalone crate
add into_bool() method from P308
add unit test for other methods
refactor query to get an iterator, so we can directly apply HOF to HashMap<Variable, Term> to another item

rDS Nasqueron Datasources
	D3425	rDS66677521718a Document sparql-client release
	D3424	rDSc74be4b99dd3 Extract SPARQL client

Mentioned In: D3423: Upgrade crate dependencies
D2731: Query Wikidata to enrich FANTOIR file
Mentioned Here: D3425: Document sparql-client release
P308 Transform sparql module from fantoir-datasource in standalone crate

dereckson removed dereckson as the assignee of this task.Jan 14 2023, 21:10

dereckson triaged this task as Wishlist priority.

dereckson created this task.

The SPARQL client also depends of our HTTP client, so plan is to:

move from services/ the HTTP client to a crate ds-http-client
move from services/ the SPARQL client to a crate sparql-client
create new dependencies
- sparql-client depends from ds-http-client
- fantoir-datasource depends from sparql-client
- fantoir-datasource depends from ds-http-client directly too to download file

The prefix ds- allows to identify crates offering services for our datasources project, when there is a need to disambiguate the names.

refactor query to get an iterator, so we can directly apply HOF to HashMap<Variable, Term> to another item

This is unclear, as QuerySolution already iterates to (Variable, Term) tuples.

If it applies to query() method directly, that methods returns SparqlResults, which can be either an iterable solution, either a boolean.

Crate seems ready for publishing with D3425, but ds-http-client needs to be published first.

Published ds-http-client and sparql-client:

dereckson closed this task as Resolved.Sep 20 2024, 23:15