Re: 🚀 graphy.js - High Performance API and CLI - Major Release v4.0.0 🎉

Thanks Martynas,

  Implementing an RDF/XML writer is very doable. I am hoping to get to the
GH issue in the coming weeks. In case you are interested in DIY, I would
also recommend looking at the compiled main.js file for the
content.ttl.write package (via npm install).

Cheers!
 - Blake

On Thu, Jan 9, 2020 at 15:41 Martynas Jusevičius <martynas@atomgraph.com>
wrote:

> Blake,
>
> great work.
>
> What would it take to add RDF/XML support? Writer would be a priority for
> me.
>
> If I would attempt to write some compatible code, is this an example to
> follow?
>
> https://github.com/blake-regalia/graphy.js/blob/master/src/content/t/write/main.js.jmacs
>
> On Wed, Dec 11, 2019 at 8:28 PM Blake Regalia <blake.regalia@gmail.com>
> wrote:
> >
> > [Crossposted to Semantic Web and RDFJS mailing lists]
> >
> > Dear all, I am pleased to announce a new major release of graphy, a
> collection of high-performance RDF libraries for JavaScript developers, see
> benchmarks here.
> >
> > Available on npm, graphy also ships a powerful command-line interface
> for manipulating RDF data using limits, filters, transforms, unions, diffs,
> and many more.
> >
> >     Comparison to N3.js: graphy covers many of the same functionalities
> as N3.js (including N-Triples, N-Quads, Turtle and TriG streaming and
> non-streaming readers and writers, RDFJS Data Factory and Dataset), but
> graphy outperforms N3.js in all of these categories. One feature that
> graphy currently lacks however is a parser for the N3 language.
> >
> > More information at  https://graphy.link/   and
> https://github.com/blake-regalia/graphy.js
> >
> >
> > This update brings many new features to all the packages, with some
> necessary breaking changes, several fixes to the readers and writers, and
> performance improvements across the board. See CHANGELOG.
> >
> > Some CLI examples (see documentation here for more):
> >
> > 1) Count the number of distinct triples in a Turtle file:
> >
> > $ graphy read -c ttl / distinct --triples   < input.ttl
> >
> >
> > 2) Count the number of distinct subjects that are of type dbo:Place in
> an N-Quads file:
> >
> > $ graphy read -c nq / filter -x '; a; dbo:Place' / distinct --subjects
>  < places.nq
> >
> >
> > 3) Compute the difference between two RDF datasets 'a.trig' and 'b.trig':
> >
> > $ graphy read / diff / write  --inputs a.trig b.trig   > diff.trig
> >
> >
> > 4) Compute the canonicalized union of a bunch of RDF datasets in the
> 'data/' directory:
> >
> > $ graphy read / union / write   --inputs data/*.{nt,nq,ttl,trig}   >
> output.trig
> >
> >
> > 5) Extract the first 2 million quads of a Turtle file:
> >
> > $ graphy read -c ttl / head 2e6 / write -c ttl  < in.ttl  > view-2M.ttl
> >
> >
> > 6) Materialize the inverse relations for all triples with the owl:sameAs
> predicate, but only where the object is a node and different from the
> subject:
> >
> > $ graphy read / filter -x '!$object; owl:sameAs; {node}' / transform -j
> 't => [t.o, t.p, t.s]' / write -c ttl   < input.ttl   > output.ttl
> >
> >
> >
> >
> >  - Blake Regalia
>
-- 
- Blake