Jena became project under Apache S.F.

2019-03-27 | Dejan Petrovic

Jena is a Java based framework for the development semantic web applications based on W3C standards and recommendations related to work with RDF and SPARQL query files. This project was initiated in HPLabs as an open source project and its recognized as one of the most important tools Semantic Web. HP does not help this project, nor is an employee at HP is currently working on this tool.

Jena is composed of the following modules:

 - tools for working with RDF files
 - readers and printers to work with RDF data formats such as RDF / XML, Turtle, N-Triples, NQuads, Trig
 - tools for working with database systems based on memory, files, and SQL relational databases
 - tools for working with OWL data formats
 - modules for inferences, based on the ontology and rules


Agreement with the Apache Software Foundation, refers to the following components of the Jena-based tools:

 - ARQ
 - GRDDL
 - SDB
 - TDB
 - IRI
 - Joseki

Apache environment will provide new opportunities for the development of Jena tools, primarily involve new people who want to help, will ensure the future development and reduce dependence on a small group of developers. There is also a dependence Jena tools with other Apache products such as Xerces, Lucene, Apache Commons

Jena currently has a large customer base in software industry and universities. HP closed the lab group in October 2009. People associated with a Jena project were moved to various companies and institutions connected with the Semantic Web. Most of these programmers are still working on the Jena project.