Re: Checking equality of graphs serialized in JSON-LD and Turtle

On 18 October 2014 23:03, ☮ elf Pavlik ☮ <perpetual-tripper@wwelves.org>
wrote:

> On 10/18/2014 11:59 AM, bergi wrote:
> > Am 17.10.2014 um 15:35 schrieb ☮ elf Pavlik ☮:
> >> Howdy,
> >>
> >> I work on automated tests for examples in draft of ActivityStreams 2.0
> >> spec[1]
> >>
> >> So far I use jsonld.js to get N-Quads from JSON-LD examples in spec +
> >> latest context document. For now I modified those N-Quads by hand to
> >> make it more human readable Turtle so we can review and define expected
> >> RDF as fixtures.
> >>
> >> I still don't have clear strategy how to compare graphs serialized in
> >> both JSON-LD and Turtle. I plan to use N3.js to parse turtle, also in
> >> LevelGraph extensions[2][3] we already have code which converts both
> >> serializations to array of plain triples for persisting them. It may
> >> require some carefulness with blank nodes...
> >>
> >> I remember us having conversation about common js format which we could
> >> use as common base for converting all the other serializations. I think
> >> we considered expanded JSON-LD as main candidate.
> >>
> >> Any recommendations for quick way of comparing, for now just equality,
> >> graphs serialized in JSON-LD and Turtle?
> >
> > I have created the module rdf-test-utils[1] for my RDF-Ext tests[2]. The
> > module contains a compareGraph method to compare two RDF-Interfaces
> > graph objects. The jsonld.normalize function is used to generate
> > canonical N-Triples. You could use the RDF-Ext parsers to get
> > RDF-Interfaces graph objects. Internal RDF-Ext also uses the JSON-LD and
> > N3.js library.
> neat! it almost solved my task, but then *blank node identifiers* jumped
> at me and after normalizing graphs it compared '' with '' returning true :D
> https://github.com/bergos/rdf-ext/issues/3
>

Dont use bnodes, you are violating axiom 0 of the web (among others!),
anything of significance should be given a URI.


>
> >
> > bergi
> >
> > [1] https://www.npmjs.org/package/rdf-test-utils
> > [2] https://github.com/bergos/rdf-ext/blob/master/test/test.js
> >
>
>
>