Function rdf_canon::api::issue_quads

pub fn issue_quads(
    input_quads: &[Quad]
) -> Result<HashMap<String, String>, CanonicalizationError>

Assigns deterministic identifiers to any blank nodes in the input quads and returns the assignment result as a map.

Examples

use oxrdf::Quad;
use oxttl::NQuadsParser;
use rdf_canon::issue_quads;
use std::collections::HashMap;
use std::io::Cursor;

let input = r#"
_:e0 <http://example.org/vocab#next> _:e1 _:g .
_:e0 <http://example.org/vocab#prev> _:e2 _:g .
_:e1 <http://example.org/vocab#next> _:e2 _:g .
_:e1 <http://example.org/vocab#prev> _:e0 _:g .
_:e2 <http://example.org/vocab#next> _:e0 _:g .
_:e2 <http://example.org/vocab#prev> _:e1 _:g .
"#;
let expected_map = HashMap::from([
    ("g".to_string(), "c14n0".to_string()),
    ("e0".to_string(), "c14n1".to_string()),
    ("e1".to_string(), "c14n2".to_string()),
    ("e2".to_string(), "c14n3".to_string()),
]);

let input_quads: Vec<Quad> = NQuadsParser::new()
    .parse_read(Cursor::new(input))
    .map(|x| x.unwrap())
    .collect();
let issued_identifiers_map = issue_quads(&input_quads).unwrap();

assert_eq!(issued_identifiers_map, expected_map);