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;
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) = store.query("SELECT ?s WHERE { ?s ?p ?o }")? {
    assert_eq!(solutions.next().unwrap()?.get("s"), Some(&ex.into()));
};

Structs

BulkLoader

A bulk loader allowing to load at 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 to query and update 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…).