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RE: request for verification: paging in TPF

From: John Walker <john.walker@semaku.com>
Date: Mon, 9 Nov 2015 10:01:13 +0100 (CET)
To: public-linked-data-fragments@w3.org, Markus Lanthaler <markus.lanthaler@gmx.net>
Message-ID: <1882598815.325415.1447059673616.JavaMail.open-xchange@oxweb02.eigbox.net>
Hi Markus,

> On November 6, 2015 at 9:09 PM Markus Lanthaler <markus.lanthaler@gmx.net>
> wrote:
> On 6 Nov 2015 at 11:52, Ruben Verborgh wrote:
> >>> I like that. Another minor tweak
> >>>
> >>> The page MUST use hydra:next to reference the next page. If the next
> page
> >>> would be (is?) empty, however, it SHOULD NOT be referenced.
> >
> > Good. Any particular reason for "reference" over "link"?
> No, it's just a personal preference I guess. I use link mainly as a noun.
> > I have "would be" because one can discuss whether a next page really
> exists if it is empty.
> >
> >> So to deconstruct this a little, you are in effect saying:
> >> a. If there is a next page, the current page MUST use hydra:next to
> reference the next page
> >> b. The first page of a fragment MAY be empty
> >> c. Subsequent pages SHOULD NOT be empty
> >
> > Yes, indeed. That would be an other way to list this.
> > While it is longer, it might be clearer.
> >
> > Markus, what do you think?
> It's very clear and easy to understand but I would prefer it to be a bit
> shorter. I suspect John wrote it down this way to confirm that he understood
> it correctly. John, do you have an idea of how to phrase this better while
> not making it look complex by making it a list?

Indeed was not suggesting to write this way in the spec, just to confirm I
it correctly.

Actually I would say the points (b) and (c) would be better added to the
that defines what an empty page is:

A page is considered empty if it does not contain any data triples (regardless
metadata and controls). Therefore a page of a Triple Pattern Fragment should
only be empty when the corresponding Triple Pattern Fragment is empty. In all
cases the page SHOULD contain at least one data triple.

Not exactly Shakespeare, but hopefully serves to clarify.

> --
> Markus Lanthaler
> @markuslanthaler

Received on Monday, 9 November 2015 09:01:49 UTC

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