- From: Ivan Herman <ivan@w3.org>
- Date: Sat, 30 Mar 2013 10:57:22 +0100
- To: Niklas Lindström <lindstream@gmail.com>
- Cc: Manu Sporny <msporny@digitalbazaar.com>, JSON-LD CG <public-linked-json@w3.org>
On Mar 30, 2013, at 03:16 , Niklas Lindström <lindstream@gmail.com> wrote: > Very cool! > > As you know, my RDFa implementation in the RDFa-lab (which also runs > on Node and in the browser) [1] directly generates expanded JSON-LD. > I've then used your jsonld.js (with the framing stuff pruned) on that, > e.g. in combination with the Connect algorithm in the lab. > > Another thing I've used for a while is RDFLib (Python), combined with > rdflib-jsonld and the "rdfpipe" commandline tool (from RDFExtras) to > do something very similar (rdfpipe can handle most RDF formats in and > out): > > $ curl -L http://w3id.org/payswarm/v1 -o /tmp/payswarm-v1.jsonld > $ rdfpipe -irdfa http://recipes.payswarm.com/?p=10554 > -ojson-ld:context=/tmp/payswarm-v1.jsonld As an aside: do you think it would be possible to add the json-ld serializer into the core RDFLib distribution soon? For the time being, as you know, I use my own json-ld serializer in pyRdfa, but I have not really done anything with it lately, and I am not even sure it is up to date. I would really prefer to rely on a core module... Thx. Ivan > > (Something it it goes wrong when fetching the remote context, so I had > to use a local copy. Alas, I haven't had time to work on rdflib-jsonld > for quite some time now.) > > And recently (as in 3 hours ago), the Swedish legal information system > I built (in Java/Groovy) [2] was updated to use an up-to-date JSON-LD > context. This system actually consumes legal information published in > RDF/XML or RDFa now (over Atom), and among other things funnel > extracted JSON-LD into ElasticSearch. See e.g. [3] and [4] (but note > that the new context isn't deployed yet). > > Cheers, > Niklas > > [1]: https://github.com/niklasl/rdfa-lab > [2]: https://github.com/rinfo/rdl/tree/develop > [3]: http://rinfo.lagrummet.se/publ/sfs/1736:0123_1/konsolidering/1736-01-23 > [4]: http://service.lagrummet.se/publ/sfs/1736:0123_1/konsolidering/1736-01-23/data.json > > > On Sat, Mar 30, 2013 at 2:34 AM, Manu Sporny <msporny@digitalbazaar.com> wrote: >> bcc: RDFa WG, RDF WG >> >> Dave Lehn and Dave Longley just put together a tool that's pretty rough >> around the edges, but really helpful for those trying to: >> >> * Transform RDFa to JSON-LD >> * Normalize JSON-LD/RDF Datasets to NQuads >> * Transform JSON-LD to compact, expanded, normalized, or flattened form >> >> To install the tool, do the following (you will need git, nodejs, and >> npm installed): >> >> git clone https://github.com/digitalbazaar/jsonld.js.git >> cd jsonld.js >> npm install >> >> To compact a document on the Web using a JSON-LD context published on >> the Web: >> >> ./bin/jsonld compact >> -c "http://w3id.org/payswarm/v1" >> "http://recipes.payswarm.com/?p=10554" >> >> That will read in a PaySwarm Asset and Listing in RDFa 1.0 format (using >> Green Turtle by Alex Milowski), convert it to JSON-LD expanded form, >> compact it using the 'http://w3id.org/payswarm/v1' context, and dump it >> out to the console in compacted form. >> >> ./bin/jsonld normalize -q "http://recipes.payswarm.com/?p=10554" >> >> That will read in a PaySwarm Asset and Listing in RDFa 1.0 format, >> normalize the data using the RDF Dataset normalization algorithm, and >> then dump the output to normalized NQuads format. The NQuads can then be >> processed via SHA-256, or similar algorithm, to get a deterministic hash >> of the contents of the Dataset. >> >> The implementation is up-to-date with the RDFa and JSON-LD specs. The >> tool still needs quite a bit of tweaking, but it's a pretty powerful >> demonstration of many of the things this community has been building >> over the past several years. >> >> -- manu >> >> -- >> Manu Sporny (skype: msporny, twitter: manusporny, G+: +Manu Sporny) >> Founder/CEO - Digital Bazaar, Inc. >> blog: Google Summer of Code 2013: RDFa, JSON-LD, Web Payments >> http://digitalbazaar.com/2013/03/12/gsoc/ >> > ---- Ivan Herman, W3C Semantic Web Activity Lead Home: http://www.w3.org/People/Ivan/ mobile: +31-641044153 FOAF: http://www.ivan-herman.net/foaf.rdf
Received on Saturday, 30 March 2013 09:57:45 UTC