On 18 November 2011 09:55, Reto Bachmann-Gmür <m...@farewellutopia.com> wrote: > On Thu, Nov 17, 2011 at 11:00 AM, Enrico Daga <enricod...@gmail.com> wrote: > >> On 16 November 2011 06:39, Rupert Westenthaler >> <rupert.westentha...@gmail.com> wrote: >> > Hi Tommaso, all >> > >> > >> > On 16.11.2011, at 00:14, Tommaso Teofili wrote: >> > >> >> 2011/11/15 Enrico Daga <enricod...@gmail.com> >> > [..] >> >> BUT I think that's not possible at the moment due to licensing issues >> wich >> >> GPL2, see [1][2]. >> >> Am I wrong? >> >> Tommaso >> >> >> >> [1] : http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/VOSLicense >> >> [2] : http://www.apache.org/legal/resolved.html >> >> >> > when looking at the POM file [1], I do not see any Virtuoso specific >> dependencies other than the JDBC driver. >> > So in my opinion directly access to the data within the Virtuoso >> relational database should be OK (license wise). >> > >> > However I could imagine that this could change as soon as Clerezza also >> supports direct usage of the >> > SPARQL engine of Stores (CLEREZZA-466 ) and one would like to implement >> this for Virtuoso. >> No, it doesn't, because the SPARQL implementation of virtuoso is based >> on a SQL preprocessor. For example you can do the following in SQL: >> >> sparql select * from {?a ?b ?c} >> >> This means that the only change would be to implement >> SparqlTcProvider, without the need of additional deps. >> > Interesting. I was thinking to use the sparql-webendpoint of virtuoso to > avoid dependencies. I think both approach might work. > > >> (This is an extremely interesting feature for me, is anybody active on >> that?) >> > Shouldn't be a big thing a the major step of preparsing the query and thus > being able to find out if one or more StorageProviders are affected by the > query is already implemented. Will you be at the Salburg IKS meeting? Maybe > we could fid some time to hack on this. Unfortunatly not, but I am available on join you remotely with skype/irc, I'm very interested on this...
> > cheers, > reto > > > >> >> cheers >> Enrico >> >> > >> > best >> > Rupert >> > >> > >> > [1] >> https://github.com/enridaga/clerezza-virtuoso/blob/master/clerezza-virtuoso/pom.xml >> > >> > >> >> >> >>> >> >>> (Last but not least, code reviews or any hint on the implementation is >> >>> welcome!) >> >>> >> >>> Bests, >> >>> Enrico >> >>> >> >>> On 10 November 2011 23:48, Reto Bachmann-Gmür <r...@apache.org> wrote: >> >>>> Enrico wrote: >> >>>>> >> >>>>> progress: >> >>>>> - implemented clerezza-virtuoso storage adapter (stanbol - >> >>>>> data.cnr.it integration) >> >>>>> >> >>>>> >> >>>>> >> >>>>> >> >>>>> >> >>> >> https://github.com/enridaga/clerezza-virtuoso/tree/master/clerezza-virtuoso >> >>>> >> >>>> Hi Enrico, >> >>>> >> >>>> This looks very cool! >> >>>> >> >>>> What are your expiriences, what are the benefits and trade-offs >> compared >> >>>> with tdb storage? >> >>>> >> >>>> Cheers, >> >>>> Reto >> >>>> >> >>>> >> >>>> >> >>>> >> >>> >> >>> >> >>> >> >>> -- >> >>> Enrico Daga >> >>> >> >>> -- >> >>> http://www.enridaga.net >> >>> skype: enri-pan >> >>> >> > >> > >> >> >> >> -- >> Enrico Daga >> >> -- >> http://www.enridaga.net >> skype: enri-pan >> > -- Enrico Daga -- http://www.enridaga.net skype: enri-pan
