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[rdf4j-dev] Contribution of FedX (SPARQL Federation): Next steps

Hi,

as already privately discussed with a few people, Veritas will contribute FedX to the Eclipse Foundation, specifically to the RDF4J project.

For those of you who don't know it yet: FedX [1] is a practical framework for transparent access to Linked Data sources through a federation. It incorporates various sophisticated optimization
techniques combined with effective variants of existing techniques and is thus a highly scalable solution for practical federated query processing. The implementation is based on the RDF4J SAIL infrastructure.

The project was initially developed under the affiliation of fluid Operations as part of my Master Thesis in 2011. In 2018 the copyrights went over to Veritas (after the aquisition of fluid Operations by Veritas). As part of the merge we were permitted to change the license of FedX to Apache License and publish it on Github: https://github.com/VeritasOS/fedx


While the legal obligations are still being handled between Veritas and the Eclipse Foundation, we can already proceed with checking in the code using parallel IP process (see last comment in http://dev.eclipse.org/ipzilla/show_bug.cgi?id=20667).

The next questions to be clarified are of technical nature:

* Would FedX become its own module / artifact within the RDF4J project. Suggestion: yes
* Where (which repository) would we check-in the code. We might need a fresh repository
* Regarding code structure: we might probably need to change all package names, as well as license headers. Are there any guidelines for this?

Do you have any comments or suggestions?

Thanks,
 Wolfgang & Andreas

[1]
http://achill.informatik.uni-freiburg.de/content/team/schmidt/docs/iswc11_fedx.pdf

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