Module store 

API to access an on-disk RDF dataset.

The entry point of the module is the Store struct.

Usage example:

use oxigraph::model::*;
use oxigraph::sparql::{QueryResults, SparqlEvaluator};
use oxigraph::store::Store;

let store = Store::new()?;

// insertion
let ex = NamedNode::new("http://example.com")?;
let quad = Quad::new(ex.clone(), ex.clone(), ex.clone(), GraphName::DefaultGraph);
store.insert(&quad)?;

// quad filter
let results: Result<Vec<Quad>, _> = store.quads_for_pattern(None, None, None, None).collect();
assert_eq!(vec![quad], results?);

// SPARQL query
if let QueryResults::Solutions(mut solutions) = SparqlEvaluator::new()
    .parse_query("SELECT ?s WHERE { ?s ?p ?o }")?
    .on_store(&store)
    .execute()?
{
    assert_eq!(solutions.next().unwrap()?.get("s"), Some(&ex.into()));
};

Structs

BulkLoader

A bulk loader allowing to load a lot of data quickly into the store.

CorruptionError

An error return if some content in the database is corrupted.

GraphNameIter

An iterator returning the graph names contained in a Store.

QuadIter

An iterator returning the quads contained in a Store.

Store

An on-disk RDF dataset. Allows querying and updating it using SPARQL. It is based on the RocksDB key-value store.

Transaction

An object to do operations during a transaction.

Enums

LoaderError

An error raised while loading a file into a Store.

SerializerError

An error raised while writing a file from a Store.

StorageError

An error related to storage operations (reads, writes…).