- From: Niklas Lindström <lindstream@gmail.com>
- Date: Sat, 30 Mar 2013 03:16:26 +0100
- To: Manu Sporny <msporny@digitalbazaar.com>
- Cc: JSON-LD CG <public-linked-json@w3.org>
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 (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/ >
Received on Saturday, 30 March 2013 02:17:24 UTC