ONT-D2RQ – A Database to OWL Mapper (API and Tools)

This is a modified fork of D2RQ (https://github.com/d2rq/d2rq).

There are following major differences with the original:

• It is a maven project while the original is ant
• Up-to-date dependencies (java 8, Apache Jena 3.x, etc)
• OWL2 support
• A Fuseki (SPARQLer) based embedded server instead of Joseki based native D2RQ Server
• ONT-API (an OWL-API alternative implementation over Apache Jena)

Usage

• To build: mvn clean package
• To run tools: $ java -jar tools\target\d2rq.jar
• To include in dependencies jitpack.io can be used

Notes and propositions

• For ONT-API integration there is a special kind of OWLDocumentSource: com.github.owlcs.d2rq.D2RQGraphDocumentSource
• It is also assumed that ru.owlcs.d2rq.MappingFilter can be used to filter the default database schema
• ONT-MAP can be used to transform DB RDF data into a more suitable form

Tests

For running tests please configure postgres and mysql databases. DB sql-dumps to prepare environment are located in the doc/example directory. Also, there is a property-file with test db-settings: api/src/test/resources/db.properties

License

Apache License Version 2.0