I have gotten a few more pings lately about projects needing generic RDF support in TinkerPop3 (see GraphSail and PropertyGraphSail from TP2), including SPARQL and RDFS inference support. I think I/we will start developing this soon. I will be soliciting contributions and feedback from potential users of the RDF tools, which will most likely use Eclipse RDF4j.
Josh On Wed, Oct 19, 2016 at 12:29 PM, Carlos Buil Aranda <[email protected]> wrote: > > hello, > > sorry for opening up such an old message, but I have quite a bit of > experience with SPARQL and I may be able to help in developing an extension > to Tinkerpop for accepting SPARQL queries using Jena. Is this still an open > problem? > > Cheers > > Carlos > > El viernes, 18 de septiembre de 2015, 13:49:16 (UTC-3), Marko A. Rodriguez > escribió: >> >> Hello everyone, >> >> Daniel Kuppitz did some really cool work getting SPARQL to compile to >> Gremlin's instruction set. >> >> https://github.com/dkuppitz/sparql-gremlin >> http://www.datastax.com/dev/blog/the-benefits-of-the-gremlin >> -graph-traversal-machine#section2 >> >> Right now, this work is in Kuppitz' personal repo. However, I was >> thinking that it would be good to boost up this project such that we may >> someday merge it into Apache TinkerPop. >> >> Why? >> >> 1. We have 3 reference graph system implementations in TinkerPop. >> - TinkerGraph (POJO -- OLTP/OLAP) >> - Neo4j (OLTP) >> - Hadoop (OLAP) >> 2. We have 2 reference graph language implementations in TinkerPop. >> - Gremlin-Java8 >> - Gremlin-Groovy >> >> Why not have 3 language reference implementations AND have SPARQL-Gremlin >> be that 3rd language because: >> >> 1. It would demonstrate a language that is not embedded in a >> host-language (e.g. Java8, Groovy, Scala, etc.) >> 2. It would give TinkerPop an automatic RDF story without us having to do >> the whole Sesame/Jena song-and-dance. >> >> Talking with Kuppitz, he likes the idea but is not too interested in >> deep-diving into SPARQL and spending too much of his time on this body of >> work. >> >> Perhaps someone out there in TinkerLand is an expert in SPARQL, >> understands the visitor-pattern used in the SPARQL-Gremlin compiler (uses >> Apache Jena's ARQ parser), and is willing to fully flesh out all the >> features of SPARQL into Gremlin. >> >> Hope someone bites. >> >> Take care, >> Marko. >> >> http://markorodriguez.com >> >>
