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README.md

Rudf

Rudf is a work in progress graph database implementing the SPARQL standard.

There is no released version yet.

Its goal is to provide a compliant, safe and fast graph database based on the RocksDB key-value store. It is written in Rust.

The lib directory contains the database written as a Rust library and the server directory a stand-alone binary of a web server implementing the SPARQL 1.1 Protocol.

Are currently implemented:

SPARQL 1.1 Query except FROM and FROM NAMED.
Turtle, TriG, N-Triples, N-Quads and RDF XML RDF serialization formats for both data ingestion and retrieval using the Rio library.
SPARQL Query Results XML Format and SPARQL Query Results JSON Format.

Run the web server

Build

You need to have a recent stable version of Rust and Cargo installed.

If it's done, executing cargo build --release in the root directory of this repository should compile the full server after having downloaded its dependencies. It will create a fat binary in target/release/rudf_server.

Usage

Run ./rudf_server to start the server. It listen by default on localhost:7878.

The server provides an HTML UI with a form to execute SPARQL requests.

It provides the following routes:

/ allows to POST data to the server. For example curl -f -X POST -H 'Content-Type:application/n-triples' --data-binary "@MY_FILE.nt" http://localhost:7878/ will add the N-Triples file MY_FILE.nt to the server repository. Turtle, TriG, N-Triples, N-Quads and RDF XML are supported.
/query allows to evaluate SPARQL queries against the server repository following the SPARQL 1.1 Protocol. For example curl -f -X POST -H 'Content-Type:application/sparql-query' --data 'SELECT * WHERE { ?s ?p ?o } LIMIT 10' http://localhost:7878/query. This route supports content negotiation and could return Turtle, N-Triples, RDF XML, SPARQL Query Results XML Format and SPARQL Query Results JSON Format.

Use rudf_server --help to see the possible options when starting the server.

License

This project is licensed under either of

Apache License, Version 2.0, (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in Futures by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.