Re: Agenda miss from today that affects Paging LC decision

On 07/28/2014 03:56 PM, John Arwe wrote:
> Buried in the Sandro sorting email was a proposal to change how the 
> relationship between each page and the sort criteria are expressed. 
>  People may have been implicitly saying they're OK with that, or they 
> missed/ignored it ;-)  I'd like to know ASAP if anyone has objections.
>
> Today the relationship is expressed via the triple described in 
> [7.3.1], as shown in examples 17 and 18 [7.2] by adding the content 
> pasted in below after the [7.2] URL.
>
> Sandro proposed to change this to replace the
>    <?firstpage, ldp:containerSortCriteria (<#SortValueAscending>) >
> triple with a response header like
>    Link: <#SortValueAscending>, rel="ldp:containerSortCriteria"
>
> ...and then leave the contents of #SortValueAscending as-is.  In 
> today's meeting we did agree to rename containerSort... to 
> pagingSort..., but that could be done orthogonally.
>
> Sandro did not articulate that the #SortValueAscending resource Must 
> be an LDP-RS, but I assume that's his intent unless he proclaims 
> otherwise.

I think the restriction can be a little looser than that; the "target" 
of the Link/rel needs to be a linked data resource.   I don't know if 
that's defined in any spec, though.   It's something you can dereference 
to get an RDF description of it.    Like, either it's a hash IRI and the 
pre-hash part is an RDF-Source or it's non-hash and there's a 303 to an 
RDF-Source that describes it.

Also, for the example, I might call it something more like 
<#SortLastnameFirstname> to make it more obvious it's domain specific.

      -- Sandro


> [7.3.1] 
> https://dvcs.w3.org/hg/ldpwg/raw-file/default/ldp-paging.html#ldpc-HTTP_GET 
>
>
> [7.2] 
> https://dvcs.w3.org/hg/ldpwg/raw-file/default/ldp-paging.html#ldpc-informative 
>
>
> <?firstPage>
>   ldp:containerSortCriteria (<#SortValueAscending>).
>
> <#SortValueAscending>
>   a ldp:ContainerSortCriterion;
>   ldp:containerSortOrder ldp:Ascending;
>   ldp:containerSortPredicate o:value.
>
> Best Regards, John
>
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>