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README.md

Oxigraph

Latest Version Released API docs PyPI npm tests status artifacts status dependency status Gitter Twitter URL

Oxigraph is a graph database implementing the SPARQL standard.

Its goal is to provide a compliant, safe, and fast graph database based on the RocksDB key-value store. It is written in Rust. It also provides a set of utility functions for reading, writing, and processing RDF files.

Oxigraph is in heavy development and SPARQL query evaluation has not been optimized yet. The development roadmap is using GitHub milestones. Oxigraph internal design is described on the wiki.

Oxigraph implements the following specifications:

It is split into multiple parts:

Also, some parts of Oxigraph are available as standalone Rust crates:

  • oxrdf, datastructures encoding RDF basic concepts (the oxigraph::model module).
  • oxrdfio, a unified parser and serializer API for RDF formats (the oxigraph::io module). It itself relies on:
    • oxttl, N-Triple, N-Quad, Turtle, TriG and N3 parsing and serialization.
    • oxrdfxml, RDF/XML parsing and serialization.
  • spargebra, a SPARQL parser.
  • sparesults, parsers and serializers for SPARQL result formats.
  • sparopt, a SPARQL optimizer.
  • oxsdatatypes, an implementation of some XML Schema datatypes.

The library layers in Oxigraph. The elements above depend on the elements below: Oxigraph libraries architecture diagram

A preliminary benchmark is provided. There is also a document describing Oxigraph technical architecture.

When cloning this codebase, don't forget to clone the submodules using git clone --recursive https://github.com/oxigraph/oxigraph.git to clone the repository including submodules or git submodule update --init to add the submodules to the already cloned repository.

Help

Feel free to use GitHub discussions or the Gitter chat to ask questions or talk about Oxigraph. Bug reports are also very welcome.

If you need advanced support or are willing to pay to get some extra features, feel free to reach out to Tpt.

License

This project is licensed under either of

at your option.

Contribution

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

Sponsors

And others. Many thanks to them!