owlrl 7.6.0

A simple implementation of the OWL2 RL Profile, as well as a basic RDFS inference, on top of RDFLib. Based mechanical forward chaining.

OWL-RL

A simple implementation of the OWL2 RL Profile, as well as a basic RDFS inference, on top of RDFLib, based on forward chaining.

This package is a Python library that also contains a couple of scripts:

• scripts/RDFConvertService: a CGI script to invoke the library. It may have to be adapted to the local server setup.

• scripts/owlrl: a script that can be run locally on to transform a file into RDF (on the standard output). Run the script with -h to get the available flags.

Installation

This package requires RDFLib 7.6.0 or newer. It can be installed from the Python Package index in the usual way:

pip install owlrl

or

poetry add owlrl

Optional: run the closure against an Oxigraph in-memory store by installing the extra:

pip install owlrl[oxigraph]

Use

This package can run inference according to RDFS and/or OWL-RL.

For details on RDFS, see the RDF Semantics Specification; for OWL 2 RL, see the OWL 2 Profile specification.

View the OWL-RL documentation online: http://owl-rl.readthedocs.io/

Oxigraph store (optional)

After installing the oxigraph extra (see Installation above), you may pass a PyOxigraph Store into owlrl.DeductiveClosure(...).expand(...) and related closure entry points wherever you would normally pass an RDFLib Graph or Dataset. Inferred triples can still be written to a separate named graph on that store via the destination argument, as with RDFLib.

This integration is provided for compatibility (for example, keeping the rest of an application on Oxigraph) rather than for speed. Converting terms to and from RDFLib objects removes most of the performance benefit of Oxigraph, and this project still uses RDFLib types and logic internally for all inference steps.

License

This software is released under the W3C© SOFTWARE NOTICE AND LICENSE. See LICENSE.txt.

Support & Contacts

For general “how do I…” queries, please use https://stackoverflow.com and tag your question with rdflib. Existing questions:

• https://stackoverflow.com/questions/tagged/rdflib

If you want to contact the rdflib maintainers, please do so via:

• the rdflib-dev mailing list: https://groups.google.com/group/rdflib-dev

• the chat, which is available at gitter or via matrix #RDFLib_rdflib:gitter.im

Development

Changes

To view the changelog for this software library, see CHANGELOG.rst.

Release Procedure

• ensure all tests pass: pytest

• update all the version numbers

  • pyproject.toml

  • README.rst

• remove the current dist/ dir

• build the new distribution

• test the metadata rendering

• test push it to PyPI

• actually push it to PyPI

rm -vf dist/*
poetry build
bsdtar -xvf dist/owlrl-*.whl -O '*/METADATA' | view -
bsdtar -xvf dist/owlrl-*.tar.gz -O '*/PKG-INFO' | view -

poetry publish --dry-run
poetry publish -u __token__ -p <OWL-RL PyPI Token>

• commit the version update

• tag it

• push the commits & tag to GitHub

• make a GitHub release

  • reuse the CHANGELOG entry for the release