Apache Jena is an open source Semantic Web framework for Java. It provides an API to extract data from and write to RDF graphs. The graphs are represented as an abstract "model". A model can be sourced with data from files, databases, URLs or a combination of these. A model can also be queried through SPARQL 1.1.

Jena is similar to RDF4J (formerly OpenRDF Sesame); though, unlike RDF4J, Jena provides support for OWL (Web Ontology Language). The framework has various internal reasoners and the Pellet reasoner (an open source Java OWL-DL reasoner) can be set up to work in Jena.

Jena supports serialisation of RDF graphs to: a relational database RDF/XML Turtle TriG Notation 3 JSON-LD

Versions

After Apache integration Jena was integrated as a project under the umbrella of The Apache Software Foundation in April 2012, after having been in the Apache Incubator since November 2010. Release name DateApache Jena 4.5.02022-05-01Apache Jena 4.4.02022-01-13Apache Jena 4.3.22021-12-17Apache Jena 4.3.12021-12-10Apache Jena 4.3.02021-12-05Apache Jena 4.2.02021-09-12Apache Jena 4.1.02021-05-31Apache Jena 4.0.02021-03-27Apache Jena 3.17.02020-11-25Apache Jena 3.16.02020-07-09Apache Jena 3.15.02020-05-15Apache Jena 3.14.02020-01-16Apache Jena 3.13.12019-10-06Apache Jena 3.13.02019-09-25Apache Jena 3.12.02019-05-27Apache Jena 3.11.02019-04-24Apache Jena 3.10.02018-12-30Apache Jena 3.9.02018-10-08Apache Jena 3.8.02018-07-02Apache Jena 3.7.02018-02-14Apache Jena 3.6.02017-12-17Apache Jena 3.5.02017-11-02Apache Jena 3.4.02017-07-21Apache Jena 3.3.02017-05-21Apache Jena 3.2.02017-02-10Apache Jena 3.1.02016-05-14Apache Jena 3.0.02015-07-29Apache Jena 2.13.02015-03-13Apache Jena 2.12.02014-08-07Apache Jena 2.11.02013-09-18Apache Jena 2.10.02013-02-25Apache Jena 2.7.02011-12-23

Before Apache integration Jena was created by HP Labs and was on SourceForge since 2001, and was donated to The Apache Software Foundation in November 2010.

Release name DateJena 2.6.02009-05-18Jena 2.12004-02-10Jena 2.02003-08-28Jena 1.1.02001-07-06Jena 1.02000-08-28

Fuseki Fuseki is an HTTP interface to RDF data. It supports SPARQL for querying and updating. The project is a sub-project of Jena and is developed as servlet. Fuseki can also be run stand-alone server as it ships preconfigured with the Jetty web server.

ARQ ARQ is a query engine within Jena that supports SPARQL.

References

External links