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RE: Playground error or schema.org error?

From: Cole, Timothy W <t-cole3@illinois.edu>
Date: Thu, 4 Apr 2019 15:48:18 +0000
To: 'Richard Wallis' <richard.wallis@dataliberate.com>
CC: 'Ivan Herman' <ivan@w3.org>, 'Dan Brickley' <danbri@google.com>, 'Gregg Kellogg' <gregg@greggkellogg.net>, "'David I. Lehn'" <dil@lehn.org>, 'W3C JSON-LD Working Group' <public-json-ld-wg@w3.org>
Message-ID: <007601d4eafd$d25d1c90$771755b0$@illinois.edu>
Richard-

Could it matter that https://schema.org, https://schema.org/CreativeWork, etc. all include the "access-control-allow-origin: *" response header, but the response for https://schema.org/docs/jsonldcontext.json (to which content negotiation always redirects eventually) does not include this response header?

Seems unlikely given the one "@context" value that seems to work (which does same redirect, albeit with an extra redirect in between). One wonders if the playground has cached the schema.org context for http://schema.org


By the way, adding to the context values that don't work in the playground: "@context": "https://schema.org/docs/jsonldcontext.json"

Thanks,

-Tim Cole

From: Richard Wallis <richard.wallis@dataliberate.com>
Sent: Thursday, April 4, 2019 10:13 AM
To: Cole, Timothy W <t-cole3@illinois.edu>
Cc: Ivan Herman <ivan@w3.org>; Dan Brickley <danbri@google.com>; Gregg Kellogg <gregg@greggkellogg.net>; David I. Lehn <dil@lehn.org>; W3C JSON-LD Working Group <public-json-ld-wg@w3.org>
Subject: Re: Playground error or schema.org error?

Ivan, all

Investigating this issue has identified several individual things that led to the presumption of an error.

Background operation
When the Schema.org application detects it is being asked for the jsonld context file, it returns a http 302 redirect to '/docs/jsonldcontext.json' which builds and returns the context file.  As an aside, an easily readable version of that file is available at /docs/jsonldcontext.json.txt<https://schema.org/docs/jsonldcontext.json.txt>

Use of curl for testing
As the response is a 302 redirect, the -L option is needed enabling it to follow redirects.
Also as Tim points out, the correct Accept value should be application/ld+json

Behaviour of example provided (https://tinyurl.com/y45ycru2)
In the example is the following line and the reported error:
 "@context": "http://schema.org/",

Potentially the context URI could be rewritten in the following ways with at least some expectation that it would result in valid operation:
 "@context": "https://schema.org/",
 "@context": "https://schema.org",
 "@context": "http://schema.org",

In the Playground, only the last of these does not report an error.

Testing all four combinations using curl (with -L option and application/ld+json as the Accept value) results in the correct format being returned in every case.

This suggests to me that is an issue with the Playground, when encountering https and/or trailing slashes in @context URIs.   My tests indicate that the Schema.org application is functioning correctly in this area.


~Richard.




Richard Wallis
Founder, Data Liberate
http://dataliberate.com

Linkedin: http://www.linkedin.com/in/richardwallis

Twitter: @rjw
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On Thu, 4 Apr 2019 at 15:57, Cole, Timothy W <t-cole3@illinois.edu<mailto:t-cole3@illinois.edu>> wrote:
Ivan

I set the Accept header to application/ld+json and get the correct result as of 2 minutes ago.  I also got the correct result with this header last week.

I don't think Accept: application/json has ever worked to get the context document.

Of course this may have no bearing on playground issue.

-Tim Cole

From: Ivan Herman <ivan@w3.org<mailto:ivan@w3.org>>
Sent: Thursday, April 4, 2019 8:56 AM
To: Richard Wallis <richard.wallis@dataliberate.com<mailto:richard.wallis@dataliberate.com>>
Cc: Dan Brickley <danbri@google.com<mailto:danbri@google.com>>; Gregg Kellogg <gregg@greggkellogg.net<mailto:gregg@greggkellogg.net>>; David I. Lehn <dil@lehn.org<mailto:dil@lehn.org>>; W3C JSON-LD Working Group <public-json-ld-wg@w3.org<mailto:public-json-ld-wg@w3.org>>
Subject: Re: Playground error or schema.org<http://schema.org> error?

Richard, Dan,

thanks for the quick reactions!

Ivan

On 4 Apr 2019, at 15:07, Richard Wallis <richard.wallis@dataliberate.com<mailto:richard.wallis@dataliberate.com>> wrote:

Ivan,

Your expectation is correct - looking in to it now.


~Richard.
Richard Wallis
Founder, Data Liberate
http://dataliberate.com<https://urldefense.proofpoint.com/v2/url?u=http-3A__dataliberate.com_&d=DwMFaQ&c=OCIEmEwdEq_aNlsP4fF3gFqSN-E3mlr2t9JcDdfOZag&r=1SG5aXop0rkp_O1wnbIf7XweTLUSe9Z3aj8AqEIzm8c&m=yMDQ1-tDX9IVpw-TlXQfMkw7wtmEw1QZj7Yc7wqaSFY&s=_NPcYIAMzhF5rhAnaKgzsTMu4aZsBQ9ii3Cal230Akk&e=>
Linkedin: http://www.linkedin.com/in/richardwallis<https://urldefense.proofpoint.com/v2/url?u=http-3A__www.linkedin.com_in_richardwallis&d=DwMFaQ&c=OCIEmEwdEq_aNlsP4fF3gFqSN-E3mlr2t9JcDdfOZag&r=1SG5aXop0rkp_O1wnbIf7XweTLUSe9Z3aj8AqEIzm8c&m=yMDQ1-tDX9IVpw-TlXQfMkw7wtmEw1QZj7Yc7wqaSFY&s=dJrhSCpNQDDkIcRf2Zya4pr13LC8AzeSz95BtzwJDIo&e=>
Twitter: @rjw
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On Thu, 4 Apr 2019 at 13:59, Dan Brickley <danbri@google.com<mailto:danbri@google.com>> wrote:
+ Richard Wallis

We switched to a new version of site codebase on Monday. Richard, any ideas?

On Thu, 4 Apr 2019, 05:24 Ivan Herman, <ivan@w3.org<mailto:ivan@w3.org>> wrote:
Just wondering:

https://tinyurl.com/y45ycru2<https://urldefense.proofpoint.com/v2/url?u=https-3A__tinyurl.com_y45ycru2&d=DwMFaQ&c=OCIEmEwdEq_aNlsP4fF3gFqSN-E3mlr2t9JcDdfOZag&r=1SG5aXop0rkp_O1wnbIf7XweTLUSe9Z3aj8AqEIzm8c&m=yMDQ1-tDX9IVpw-TlXQfMkw7wtmEw1QZj7Yc7wqaSFY&s=TqBbuVwVy41lFvdGh2Z40ZbVJNd87p3TMCWnRhWKGNU&e=>

reports an error on playground on the context line referring to 'schema.org<https://urldefense.proofpoint.com/v2/url?u=http-3A__schema.org_&d=DwMFaQ&c=OCIEmEwdEq_aNlsP4fF3gFqSN-E3mlr2t9JcDdfOZag&r=1SG5aXop0rkp_O1wnbIf7XweTLUSe9Z3aj8AqEIzm8c&m=yMDQ1-tDX9IVpw-TlXQfMkw7wtmEw1QZj7Yc7wqaSFY&s=UVfEhs-zzTHkGkGbnB2aWuOcMO4hzSSQzDH5BxvCUEU&e=>' (the JSON-LD snippet comes from the draft).

I *suspect* this a schema.org<https://urldefense.proofpoint.com/v2/url?u=http-3A__schema.org_&d=DwMFaQ&c=OCIEmEwdEq_aNlsP4fF3gFqSN-E3mlr2t9JcDdfOZag&r=1SG5aXop0rkp_O1wnbIf7XweTLUSe9Z3aj8AqEIzm8c&m=yMDQ1-tDX9IVpw-TlXQfMkw7wtmEw1QZj7Yc7wqaSFY&s=UVfEhs-zzTHkGkGbnB2aWuOcMO4hzSSQzDH5BxvCUEU&e=> error; if I say:

curl --header "Accept: application/json" https://schema.org<https://urldefense.proofpoint.com/v2/url?u=https-3A__schema.org_&d=DwMFaQ&c=OCIEmEwdEq_aNlsP4fF3gFqSN-E3mlr2t9JcDdfOZag&r=1SG5aXop0rkp_O1wnbIf7XweTLUSe9Z3aj8AqEIzm8c&m=yMDQ1-tDX9IVpw-TlXQfMkw7wtmEw1QZj7Yc7wqaSFY&s=yMtuKXAfiRO82u9D4b7MTw6t6C5fo74KHPgwx3B3zdE&e=>

I would expect to receive a json-ld file, but I get an HTML instead…

Am I misreading something? Maybe something went wrong when the new version of schema.org<https://urldefense.proofpoint.com/v2/url?u=http-3A__schema.org_&d=DwMFaQ&c=OCIEmEwdEq_aNlsP4fF3gFqSN-E3mlr2t9JcDdfOZag&r=1SG5aXop0rkp_O1wnbIf7XweTLUSe9Z3aj8AqEIzm8c&m=yMDQ1-tDX9IVpw-TlXQfMkw7wtmEw1QZj7Yc7wqaSFY&s=UVfEhs-zzTHkGkGbnB2aWuOcMO4hzSSQzDH5BxvCUEU&e=> was installed a few days ago?

Ivan

----
Ivan Herman, W3C
Publishing@W3C Technical Lead
Home: http://www.w3.org/People/Ivan/<https://urldefense.proofpoint.com/v2/url?u=http-3A__www.w3.org_People_Ivan_&d=DwMFaQ&c=OCIEmEwdEq_aNlsP4fF3gFqSN-E3mlr2t9JcDdfOZag&r=1SG5aXop0rkp_O1wnbIf7XweTLUSe9Z3aj8AqEIzm8c&m=yMDQ1-tDX9IVpw-TlXQfMkw7wtmEw1QZj7Yc7wqaSFY&s=4L2VWxHfBXWTPv6pgX7S-ewjoiqkZupVimvxiGqDZ5Q&e=>
mobile: +31-641044153
ORCID ID: https://orcid.org/0000-0003-0782-2704<https://urldefense.proofpoint.com/v2/url?u=https-3A__orcid.org_0000-2D0003-2D0782-2D2704&d=DwMFaQ&c=OCIEmEwdEq_aNlsP4fF3gFqSN-E3mlr2t9JcDdfOZag&r=1SG5aXop0rkp_O1wnbIf7XweTLUSe9Z3aj8AqEIzm8c&m=yMDQ1-tDX9IVpw-TlXQfMkw7wtmEw1QZj7Yc7wqaSFY&s=YGHcru1_EM3EQJTCNyBqpRT0qzeFRJF_hkwGof9nyho&e=>



----
Ivan Herman, W3C
Publishing@W3C Technical Lead
Home: http://www.w3.org/People/Ivan/<https://urldefense.proofpoint.com/v2/url?u=http-3A__www.w3.org_People_Ivan_&d=DwMFaQ&c=OCIEmEwdEq_aNlsP4fF3gFqSN-E3mlr2t9JcDdfOZag&r=1SG5aXop0rkp_O1wnbIf7XweTLUSe9Z3aj8AqEIzm8c&m=yMDQ1-tDX9IVpw-TlXQfMkw7wtmEw1QZj7Yc7wqaSFY&s=4L2VWxHfBXWTPv6pgX7S-ewjoiqkZupVimvxiGqDZ5Q&e=>
mobile: +31-641044153
ORCID ID: https://orcid.org/0000-0003-0782-2704<https://urldefense.proofpoint.com/v2/url?u=https-3A__orcid.org_0000-2D0003-2D0782-2D2704&d=DwMFaQ&c=OCIEmEwdEq_aNlsP4fF3gFqSN-E3mlr2t9JcDdfOZag&r=1SG5aXop0rkp_O1wnbIf7XweTLUSe9Z3aj8AqEIzm8c&m=yMDQ1-tDX9IVpw-TlXQfMkw7wtmEw1QZj7Yc7wqaSFY&s=YGHcru1_EM3EQJTCNyBqpRT0qzeFRJF_hkwGof9nyho&e=>



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Received on Thursday, 4 April 2019 15:48:47 UTC

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