W3C home > Mailing lists > Public > public-sdw-wg@w3.org > October 2016

Re: About the demo I made yesterday

From: Maxime Lefrançois <maxime.lefrancois.86@gmail.com>
Date: Wed, 12 Oct 2016 09:46:03 +0000
Message-ID: <CALsPASXY-uYVT70YFiT9hBSU0SfbCHtj5yfMtAGa7an7wsHkFg@mail.gmail.com>
To: Ghislain Atemezing-Pro <ghislain.atemezing@mondeca.com>, SDW WG Public List <public-sdw-wg@w3.org>
Hi Ghislain,

It is indeed more generic at the ontology level in general like the pointer
you give,
but targeting versioned and modularized ontologies, which is not covered by
"minimal configuration for 'slash namespaces'"

The little Content-Disposition trick is a plus, it gives a hint to the
software agent about how to name the file where to store the retrieved
document.

Kind regards,
Maxime

Le mer. 12 oct. 2016 à 11:37, Ghislain Atemezing-Pro <
ghislain.atemezing@mondeca.com> a écrit :

> Hi,
> Thanks Maxime for sharing your proposal.
> Just for curiosity, what you propose is more generic at ontology level in
> general like here [1]  or it's also also in the scope of this WG?
> Of course I do confess I don't follow a lot many threads here...
>
> Best,
> Ghislain
> [1] https://www.w3.org/TR/swbp-vocab-pub/
>
> Le mer. 12 oct. 2016 à 11:24, Maxime Lefrançois <
> maxime.lefrancois.86@gmail.com> a écrit :
>
> Dear all,
>
> During the call yesterday I made a demo about how in the ITEA2 SEAS
> project we deal with modularized and versioned ontologies.
> I used https://w3id.org/seas/ to show some of the best practices we use,
> and https://w3id.org/seas/SSNAlignment to show how we expose the
> alignments in a separate ontology module (aka file).
>
> The purpose of this mail is to propose to adopt two best practices within
> this group:
>
> 1) add Content-Disposition headers.
> When I issue a HTTP GET at http://w3id.org/seas/SystemOntology and
> request for application/rdf+xml, my browser downloads a file named
> "SystemOntology-1.0.rdf". If I do the same:
>  - at http://purl.oclc.org/NET/ssnx/ssn#, I get just "ssn";
>  - at http://www.w3.org/ns/ssn/, I get "téléchargement" (French for
> download)
> How it works: the name for the file is suggested to the browser using HTTP
> header Content-Disposition (RFC 6266).
> Proposal: add the following header when serving one of the modules in SSN
>  - Serving a Turtle representation:
> Content-Disposition: filename= ssn-<name of the module>.ttl;
>  - Serving a RDF/XML representation,
> Content-Disposition: filename= ssn-<name of the module>.rdf;
>
> Note: the file extension for application/rdf+xml, as registered at the
> IANA, is ".rdf".
> people sometimes use extensions ".owl". this comes from the old OWL
> recommendation [2] which does not use the proper IANA registration form.
> OWL2 defines more media types for OWL: the XML serialization media type
> application/owl+xml, with file extension ".owx" [3], there is also one for
> the functional syntax and the manchester syntax.
> Yet, these media types don't seem to ever have been registered to the IANA
> [4].
>
> 2) use proper 303 redirection
> When I issue a HTTP GET at https://w3id.org/seas/System, I do not
> directly get a 200 OK HTTP status code. I first get a 302 Found (because of
> w3id), then a 303 See Other that actually redirects me to the IRI of the
> latest version of the ontology module that defines this concept:
> https://w3id.org/seas/SystemOntology-1.0
> If I do the same at https://www.w3.org/ns/ssn/Sensor, I just a 200 OK.
> Why we might want to use a 303 redirect: because there are two solutions
> for Cool URIs for the Semantic Web [5]: hash URIs, and 303 URIs. By
> choosing slash-based URIs, we should let them be 303 URIs.
>
> Kind regards,
> Maxime
>
> [1] http://www.iana.org/assignments/media-types/application/rdf+xml
> [2] https://www.w3.org/TR/owl-ref/#MIMEType
> [3] *https://www.w3.org/TR/owl2-xml-serialization/#Appendix:_Internet_Media_Type.2C_File_Extension.2C_and_Macintosh_File_Type
> <https://www.w3.org/TR/owl2-xml-serialization/#Appendix:_Internet_Media_Type.2C_File_Extension.2C_and_Macintosh_File_Type>*
> [4] http://www.iana.org/assignments/media-types/media-types.xhtml
> [5] https://www.w3.org/TR/cooluris/#solutions
>
>
> --
> --------------------------------------------
> Ghislain A. Atemezing, Ph.D
> R&D Engineer
> @ Mondeca, Paris, France
> Labs: http://labs.mondeca.com
> Tel: +33 (0)1 4111 3034 <01%2041%2011%2030%2034>
> Web: www.mondeca.com
> Twitter: @gatemezing
> About Me: http://atemezing.org
>
Received on Wednesday, 12 October 2016 09:46:43 UTC

This archive was generated by hypermail 2.3.1 : Wednesday, 12 October 2016 09:46:44 UTC