W3C home > Mailing lists > Public > public-schemaorg@w3.org > April 2019

Re: content negotiation isn't working

From: Benjamin Young <byoung@bigbluehat.com>
Date: Wed, 10 Apr 2019 14:39:27 +0000
To: Mark Wilkinson UPM <mark.wilkinson@upm.es>, Richard Wallis <richard.wallis@dataliberate.com>
CC: schema.org Mailing List <public-schemaorg@w3.org>
Message-ID: <DM5PR06MB34017D3E7F14E6AF5326D88CB22E0@DM5PR06MB3401.namprd06.prod.outlook.com>
`text/turtle` is indeed the registered MIME/media type for Turtle syntax:
https://www.iana.org/assignments/media-types/text/turtle

Might want to handle both going forward though.

Cheers,
Benjamin


--

http://bigbluehat.com/

http://linkedin.com/in/benjaminyoung

________________________________
From: Mark Wilkinson UPM <mark.wilkinson@upm.es>
Sent: Wednesday, April 10, 2019 8:14 AM
To: Richard Wallis
Cc: schema.org Mailing List
Subject: Re: content negotiation isn't working

Cheers!

For the moment, I am happy to scrape the linked data description from
the RDFa.  Just thought it was worth mentioning that it didn't behave as
I had expected.

b.t.w. I think the generally-accepted MIME type for Turtle is
"text/turtle".  "application/x-turtle" fell out of favour a while ago,
as far as I am aware.

Best wishes!

Mark


On 4/10/19 1:57 PM, Richard Wallis wrote:
> Hi Mark,
>
> As the implementer of that bit of code, I am certain that that it does
> not "/incrementally go through the types
> until the server finds one that it is happy with/".
>
> I have raised an issue
> <https://github.com/schemaorg/schemaorg/issues/2206> to track this
> which hopefully will lead to a fix in an upcoming release.
>
> ~Richard
> Richard Wallis
> Founder, Data Liberate
> http://dataliberate.com
> Linkedin: http://www.linkedin.com/in/richardwallis
> Twitter: @rjw
>
>
>
> On Wed, 10 Apr 2019 at 12:45, Mark Wilkinson UPM
> <mark.wilkinson@upm.es <mailto:mark.wilkinson@upm.es>> wrote:
>
>     Hi Richard,
>
>     Thanks for the rapid reply.
>
>     Yes, if I limit the Accept header to only a single content-type, it
>     works.  It's a problem if I put all content types together (which is
>     what the software I am using does).
>
>     I think the "correct behaviour" is to incrementally go through the
>     types
>     until the server finds one that it is happy with...
>
>     Mark
>
>
>     On 4/10/19 1:26 PM, Richard Wallis wrote:
>     > Hi Mark,
>     >
>     > I have just tested this, using curl.   Although I did not get the
>     > required output for /*all*/ the accept types you listed I did
>     get the
>     > correct output serialisations for the types listed on the
>     developers
>     > page <https://schema.org/docs/developers.html#conneg>:
>     >
>     >  *
>     >
>     >     curl-s -L --header "Accept: application/ld+json"
>     > http://schema.org/Book
>     >
>     >  *
>     >
>     >     curl-s -L --header "Accept: application/rdf+xml"
>     > http://schema.org/Book
>     >
>     >  *
>     >
>     >     curl-s -L --header "Accept: text/plain" http://schema.org/Book
>     >
>     >  *
>     >
>     >     curl-s -L --header "Accept: application/x-turtle"
>     > http://schema.org/Book
>     >
>     >  *
>     >
>     >     curl-s -L --header "Accept: text/csv" http://schema.org/Book
>     >
>     > ~Richard
>     >
>     > Richard Wallis
>     > Founder, Data Liberate
>     > http://dataliberate.com
>     > Linkedin: http://www.linkedin.com/in/richardwallis
>     > Twitter: @rjw
>     >
>     >
>     >
>     > On Wed, 10 Apr 2019 at 12:07, Mark Wilkinson UPM
>     > <mark.wilkinson@upm.es <mailto:mark.wilkinson@upm.es>
>     <mailto:mark.wilkinson@upm.es <mailto:mark.wilkinson@upm.es>>> wrote:
>     >
>     >     Dear Schema-team,
>     >
>     >
>     >     It appears that content negotiation isn't quite working
>     properly for
>     > schema.org <http://schema.org> <http://schema.org> terms, as
>     described in
>     > https://schema.org/docs/developers.html
>     >
>     >     The Accept header:  Accept: text/turtle, application/ld+json,
>     >     application/rdf+xml, text/xhtml+xml, application/n3,
>     >     application/rdf+n3,
>     >     application/turtle, application/x-turtle, text/n3, text/turtle,
>     >     text/rdf+n3, text/rdf+turtle, application/n-triples
>     >
>     >     includes several of the content-types that you provide, but
>     calls
>     >     using
>     >     that header return HTML...
>     >
>     >
>     >     Am I misunderstanding?
>     >
>     >
>     >     Mark
>     >
>     >
>     >
>     >     --
>     >     Dr. Mark D. Wilkinson
>     >     BBVA-UPM Industry Chair on Biotechnology
>     >     Isaac Peral Distinguished Researcher
>     >     Centro de Biotecnología y Genómica de Plantas UPM-INIA (CBGP)
>     >     Campus Montegancedo,
>     >     Autopista M-40 (Km 38)
>     >     28223-Pozuelo de Alarcón (Madrid)
>     >
>     >
>     >     "The urge to save humanity is almost always a false front
>     >     for the urge to rule it"
>     >
>     >                             -- H. L. Mencken
>     >
>     >
>     --
>     Dr. Mark D. Wilkinson
>     BBVA-UPM Industry Chair on Biotechnology
>     Isaac Peral Distinguished Researcher
>     Centro de Biotecnología y Genómica de Plantas UPM-INIA (CBGP)
>     Campus Montegancedo,
>     Autopista M-40 (Km 38)
>     28223-Pozuelo de Alarcón (Madrid)
>
>
>     "The urge to save humanity is almost always a false front
>     for the urge to rule it"
>
>                             -- H. L. Mencken
>
--
Dr. Mark D. Wilkinson
BBVA-UPM Industry Chair on Biotechnology
Isaac Peral Distinguished Researcher
Centro de Biotecnología y Genómica de Plantas UPM-INIA (CBGP)
Campus Montegancedo,
Autopista M-40 (Km 38)
28223-Pozuelo de Alarcón (Madrid)


"The urge to save humanity is almost always a false front
for the urge to rule it"

                        -- H. L. Mencken
Received on Wednesday, 10 April 2019 14:39:52 UTC

This archive was generated by hypermail 2.4.0 : Friday, 17 January 2020 17:12:46 UTC