Sophia

A Rust toolkit for RDF and Linked Data.

It comprises the following crates:

• Core crates:
  • sophia_api defines a generic API for RDF 1.2 and linked data, as a set of core traits and types; more precisely, it provides traits for describing
    • terms, triples and quads,
    • graphs and datasets,
    • parsers and serializers
  • sophia_bcp47 provides functions and types for validating BCP47 language tags.
  • sophia_iri provides functions, types and traits for validating and resolving IRIs.
  • sophia_term defines various implementations of the Term trait from sophia_api.
  • sophia_inmem defines in-memory implementations of the Graph and Dataset traits from sophia_api.
• Parsers and serializers
  • sophia_turtle provides parsers and serializers for the Turtle-family of concrete syntaxes (for RDF 1.2).
  • sophia_jsonld provides parsers and serializers for JSON-LD 1.1.
  • sophia_xml provides parsers and serializers for RDF/XML 1.2.
• Other
  • sophia_c14n implements RDF canonicalization.
  • sophia_isomorphism provides functions to determine if two graphs or datasets are isomorphic.
  • sophia_sparql provides a (currently partial) implementation of the SPARQL 1.2 Query Language.
  • sophia_sparql_client provides a client for the SPARQL 1.1 Protocol.
  • [sophia_reasoner] provides reasoning over Simple, RDF and RDF-Schema entailment regimes
  • sophia_resource provides a resource-centric API.
• All-inclusive
  • sophia re-exports symbols from all the crates above, with the following provisio:
    • sophia_jsonld is only available with the jsonld feature
    • sophia_sparql is only available with the sparql feature
    • sophia_sparql_client is only available with the http_client feature
    • sophia_xml is only available with the xml feature

In addition to the API documentation, a high-level user documentation is available (although not quite complete yet).

Licence

This project is licensed under either or

• Apache License, Version 2.0
• CECILL-B License, compatible with BSD

at your option.

Citation

When using Sophia, please use the following citation:

Champin, P.-A. (2020) ‘Sophia: A Linked Data and Semantic Web toolkit for Rust’, in Wilde, E. and Amundsen, M. (eds). The Web Conference 2020: Developers Track, Taipei, TW. Available at: https://www2020devtrack.github.io/site/schedule.

Bibtex:

@misc{champin_sophia_2020,
        title = {{Sophia: A Linked Data and Semantic Web toolkit for Rust},
        author = {Champin, Pierre-Antoine},
        howpublished = {{The Web Conference 2020: Developers Track}},
        address = {Taipei, TW},
        editor = {Wilde, Erik and Amundsen, Mike},
        month = apr,
        year = {2020},
        language = {en},
        url = {https://www2020devtrack.github.io/site/schedule}
}

Third-party crates

The following third-party crates are using or extending Sophia

• hdt provides an implementation of Sophia's traits based on the HDT format.
• manas is a modular framework for implementing Solid compatible servers
• nanopub is a toolkit for managing nanopublications

History

An outdated comparison of Sophia with other RDF libraries is still available here.