Basic workflow of a SPARQL query in Fuseki

kinow @ Oct 11, 2014 20:36:33

Before using any library or tool in a customer project, specially when it is an Open Source one, there are many things that I like to look at before deploying it. Basically, I look at the features, documentation, community, open issues (in special blockers or criticals), the time to release fixes and new features and, obviously, the license.

At the moment I’m using Apache Jena to work with ontologies, SPARQL and data matching and enrichment for a customer.

Jena is fantastic, and similar tools include Virtuoso, StarDog, GraphDB, 4Store and others. From looking at the code and its community and documentation, Jena seems like a great choice.

I’m still investigating if/how we gonna need to use inference and reasoners, looking at the issues, and learning my way through its code base. The following is my initial mapping of what happens when you submit a SPARQL query to Fuseki.

Fuseki SPARQL query work flow

My understanding is that Fuseki is just a web layer, handling a bunch of validations, logging, error handling, and relying on the ARQ module, that is who actually handles the requests. I also think a new Fuseki server is baking in the project git repo, so stay tuned for an updated version of this graph soon.

Happy hacking!