/RDFIO

RDF triples import, export and PHP SPARQL endpoint for Semantic MediaWiki

Primary LanguagePHPOtherNOASSERTION

RDFIO Extension for Semantic MediaWiki

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Screenshot of the SPARQL Endpoint shipped with RDFIO

Introduction

This extension extends the RDF import and export functionality in Semantic MediaWiki by providing import of arbitrary RDF triples (not only OWL ontologies, as before (see about Ontology import, and a SPARQL endpoint that allows write operations.

Technically, RDFIO implements the PHP/MySQL based triple store (and its accompanying SPARQL Endpoint) provided by the ARC2 library. For updating wiki pages with new triples on import/sparql update, the WOM extension is used.

The RDF import stores the original URI of all imported RDF entities (in a special property), which can later be used by the SPARQL endpoint, instead of SMW's internal URIs, which thus allows to expose the imported RDF data "in its original formats", with its original URIs. This allows to use SMW as a collaborative RDF editor, in workflows together with other semantic tools, from which it is then possible to "export, collaboratively edit, and import again", to/from SMW.

This extensions was initially developed as part of a Google Summer of Code 2010 project, and further extended as part of a FOSS OPW 2014 project.

  • Caution! This extension is not yet ready for production use! Use it on your own risk!

Installation

Please note: RDFIO is not yet updated to work with SMW 2.5.x, so you have to use 2.4.x at the moment!

Vagrant box

The absolutely simplest way, is to use the RDFIO Vagrant box, which will automatically set up MediaWiki, SemanticMediaWiki and RDFIO in a virtual machine in under 20 minutes.

Install semi-manually using composer

  1. Provided you have the PHP package manager Composer installed (See this page for install instructions), you should now be able to install RDFIO via packagist.org, like so:

    cd <wiki_folder>
composer require rdfio/rdfio --update-no-dev

  2. After installing RDFIO using composer, only one manual step is required, namely to go to the Special:RDFIOAdmin page on your wiki, and hit the "setup" button, to initialize the MySQL tables needed by the ARC2 library that RDFIO builds upon.

Dependencies

Known limitations

  • RDFIO does not yet support anonymous / blank nodes.
  • RDFIO does not yet support all the features of SMW's vocabulary import.

Bugs, new feature request and contact information

Please reports bugs and feature requests in the issue tracker here on Github.

Links