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Re: [dxwg] Scope notes for URL properties (#972)

From: Simon Cox via GitHub <sysbot+gh@w3.org>
Date: Thu, 25 Jul 2019 00:56:39 +0000
To: public-dxwg-wg@w3.org
Message-ID: <issue_comment.created-514852720-1564016198-sysbot+gh@w3.org>
The text for `dcat:Distribution/dcat:downloadURL` and `dcat:DataService/dcat:endpointURL` are OK, but I don't think you got it quite right for `dcat:Distribution/dcat:accessURL` which needs to fit together with the explanation of `dcat:Resource/dcat:landingPage`. 

> 6.7.9 accessURL An IRI reference to a web location that a human interacts with to obtain the resource distribution.

not just humans

> Usage note: AccessURL SHOULD be used when the distribution can only be obtained by interacting with a landing page or web form.

'only' is definitely not the case here. And typicaly the accessURL will be an endpoint, not a landing page - as clearly indicated by the property-chain `dcat:accessService/dcat:endpointURL`. In fact a 'landing page' is not usually expected for a _distribution_, it is more often associated to the _dataset_, which is why it is recommended for the latter but not mentioned in the context of the former. The endpoint will often itself have a landing page, but that is incidental. 

I think I'd suggest 

> 6.7.9 accessURL An IRI reference to a resource that a client interacts with to obtain the resource distribution.
> Usage note: AccessURL SHOULD be used for the URL of a service that can provide access to this distribution, typically through query or API call. AccessURL MAY be used when the distribution can be obtained by interacting with a landing page or web form. 

As for the matter of whether the range `rdfs:Resource` is too open: this is intentional. We don't want to unnecessarily limit use of these predicates in other contexts. In general we have erred in the side of textual guidance rather than strict axiomatization. 

-- 
GitHub Notification of comment by dr-shorthair
Please view or discuss this issue at https://github.com/w3c/dxwg/issues/972#issuecomment-514852720 using your GitHub account
Received on Thursday, 25 July 2019 00:56:41 UTC

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