I am ok with next, prev, ... but I suppose I do have a question that is
similar to Marks: how do I know in what order the results are listed? Are
they in historical order? Are these feeds grouping entries in alphabetical
order, in inverse historical order? Perhaps in alphabetical order of
author,...
Again next, prev, first, last deal very well with paging. how do we
specify the order? Is this related to the query? Should there be a default
order for subscription feeds? Should the ordering information be specified
in the feed?
In rdf we could say things like
iana:historicalNext a owl:ObjectProperty;
rdfs:subPropertyOf iana:next;
rdfs:comment "a historically ordered next relation" .
and then use historicalNext for the particular historical ordering that we
need to archive our feeds. This would allow processors who do not
understand or care about the historical ordering to still walk through the
linked list of feeds.
Henry
Ps. writing from Italy
http://dannyayers.com/archives/2005/10/15/welcome-to-the-atomowl/
On Sat, 15 Oct 2005, Mark Nottingham wrote:
Date: Sat, 15 Oct 2005 20:45:35 -0700
From: Mark Nottingham <[EMAIL PROTECTED]>
To: Eric Scheid <[EMAIL PROTECTED]>
Cc: Atom Syntax <atom-syntax@imc.org>
Subject: Re: Feed History -04
OK, but that still leaves us with the question below -- who's doing the
paging, and why is it useful to have multiple ways around the thing?
On 15/10/2005, at 7:25 PM, Eric Scheid wrote:
On 16/10/05 6:54 AM, "Mark Nottingham" <[EMAIL PROTECTED]> wrote:
Can you walk me through a use case where this would be desirable?
E.g. what would the subscription URI be, would any of the entries
be updated, and how if so? In what scenario would having a closed
set feed be useful?
An archive for a blog that is no longer being updated? An archive
of entries pertaining to an event with a fixed endpoint? A
discussion forum that has been closed.
How are implementations supposed to use this information? Stop
polling the feed? Consider its items immutable? I'm concerned if
something so innocent-looking as "last" has these sorts of implications.
perhaps a better example would then be a feed of search results, which at
any time of query is a finite and closed set, and also designed to be paged
through.
e.
--
Mark Nottingham Principal Technologist
Office of the CTO BEA Systems
