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Apache Jena

Open source semantic web framework for Java

Open source semantic web framework for Java

FieldValue
nameApache Jena Semantic Web Framework
logoApache Jena logo.svg
developerHP Labs (until October 2009), then Apache Software Foundation
latest release version
latest release date
programming languageJava
genreSemantic Web
repo
website
licenseApache License 2.0

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.{{cite web | access-date=2020-06-06}}{{cite web | access-date=2020-06-06}}

Release nameDate
Apache Jena 4.5.02022-05-01
Apache Jena 4.4.02022-01-13
Apache Jena 4.3.22021-12-17
Apache Jena 4.3.12021-12-10
Apache Jena 4.3.02021-12-05
Apache Jena 4.2.02021-09-12
Apache Jena 4.1.02021-05-31
Apache Jena 4.0.02021-03-27
Apache Jena 3.17.02020-11-25
Apache Jena 3.16.02020-07-09
Apache Jena 3.15.02020-05-15
Apache Jena 3.14.02020-01-16
Apache Jena 3.13.12019-10-06
Apache Jena 3.13.02019-09-25
Apache Jena 3.12.02019-05-27
Apache Jena 3.11.02019-04-24
Apache Jena 3.10.02018-12-30
Apache Jena 3.9.02018-10-08
Apache Jena 3.8.02018-07-02
Apache Jena 3.7.02018-02-14
Apache Jena 3.6.02017-12-17
Apache Jena 3.5.02017-11-02
Apache Jena 3.4.02017-07-21
Apache Jena 3.3.02017-05-21
Apache Jena 3.2.02017-02-10
Apache Jena 3.1.02016-05-14
Apache Jena 3.0.02015-07-29
Apache Jena 2.13.02015-03-13
Apache Jena 2.12.02014-08-07
Apache Jena 2.11.02013-09-18
Apache Jena 2.10.02013-02-25
Apache 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.{{cite web |access-date=2020-06-06}}

Release nameDate
Jena 2.6.02009-05-18
Jena 2.12004-02-10
Jena 2.02003-08-28
Jena 1.1.02001-07-06
Jena 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

References

  1. "ARQ - A SPARQL Processor for Jena".
Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

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