Re: Question about annotation IDs

Okay.  I will leave it to the group to debate but depend on it being
absolute in the tests for the nonce.

Thanks!

On Wed, Aug 31, 2016 at 8:27 AM, Ivan Herman <ivan@w3.org> wrote:

>
> On 31 Aug 2016, at 14:58, Shane McCarron <shane@spec-ops.io> wrote:
>
> So.... while I don't think the spec says this, I assume that the ID
> property of an annotation MUST be an absolute IRI.
>
> If that is not the case... I can change the server tests to impute the
> absolute IRI based upon... something.  But I don't know what that something
> should be.  Probably if the ID starts with a '/' it is relative to the
> scheme + hostname + port we are referencing for the collection, and if it
> doesn't start with a '/' it is relative to the container URL.
>
>
> Hm.
>
> - The RDF 1.1 abstract syntax does say that a URI must be absolute[1].
> - JSON-LD  says "A relative IRI is an IRI that is relative to some
> other absolute IRI. In JSON-LD all relative IRIs are resolved relative to
> the base IRI."[2] and then describes the base IRI-s in [3] referring to
> @base[2] and, in the absence of it, it is relative to the document.
>
> However, the model does not aim at depending on JSON-LD too much; I am not
> sure whether it would be acceptable to use the @base (note that the JSON-LD
> spec says that a @base in an externally referenced context file is
> ignored). What this leaves us is that a relative URI is to be dereferenced
> with the full collection of annotation as a base URI, following the URI
> spec. This is where JSON-LD leads us.
>
> However, I always regarded every annotation as some sort of a
> self-standing entity, ie, relying on a higher level resource URI is shaky.
> Ie, I think it is perfectly fine if we consider the ID property as always
> being an absolute URI. If we agree on this, this clarification should be
> added to the spec…
>
> Ivan
>
> [1] https://www.w3.org/TR/rdf11-concepts/#h3_section-IRIs
> [2] https://www.w3.org/TR/json-ld/#h3_iris
> [3] https://www.w3.org/TR/json-ld/#h3_base-iri
>
>
> Anyway, help?
>
> --
> Shane McCarron
> Projects Manager, Spec-Ops
>
>
>
> ----
> Ivan Herman, W3C
> Digital Publishing Lead
> Home: http://www.w3.org/People/Ivan/
> mobile: +31-641044153
> ORCID ID: http://orcid.org/0000-0003-0782-2704
>
>
>
>
>


-- 
Shane McCarron
Projects Manager, Spec-Ops