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Cardinality of predicate maps in predicate-object maps

From: Richard Cyganiak <richard@cyganiak.de>
Date: Tue, 20 Sep 2011 18:42:10 +0100
Message-Id: <A646CD4E-7643-4A22-A648-48787BF2D4D5@cyganiak.de>
To: "public-rdb2rdf-wg@w3.org RDB2RDF" <public-rdb2rdf-wg@w3.org>
This is a comment on the Last Call draft of R2RML [1].

Section 6.3 [1] defines predicate-object maps as allowing only exactly one predicate map.

I originally proposed to allow multiple predicate maps in [2] along with some rationale. EricP explicitly +1'd this specific change in the ensuing thread [3]. This specific proposal drew no further comments in the change, and it was implemented in this revision, in early July:

$Id: Overview.html,v 1.94 2011/07/07 12:51:32 rcygania2 Exp $

It remained like this for the following two months. However, it was reverted immediately before LC here:

$Id: Overview.html,v 1.151 2011/09/13 18:37:42 sdas2 Exp $

I note that Souri is on the record before Last Call as saying: “we had those four points only: …” [4] and this change is not among the four listed. I acknowledged the four points in [5] and didn't receive any response that indicated any additional planned changes.

So I think this change should not have been made according to the process and that it should be reverted.


[1] http://www.w3.org/TR/2011/WD-r2rml-20110920/#predicate-object-map
[2] http://lists.w3.org/Archives/Public/public-rdb2rdf-wg/2011Jul/0009.html
[3] http://lists.w3.org/Archives/Public/public-rdb2rdf-wg/2011Jul/0012.html
[4] http://www.w3.org/2011/08/30-rdb2rdf-minutes.html
[5] http://lists.w3.org/Archives/Public/public-rdb2rdf-wg/2011Aug/0184.html
Received on Tuesday, 20 September 2011 17:42:48 UTC

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