W3C home > Mailing lists > Public > public-rdb2rdf-comments@w3.org > June 2012

Re: Blank nodes as subject maps in R2RML

From: Juan Sequeda <juanfederico@gmail.com>
Date: Fri, 8 Jun 2012 09:26:14 -0700
Message-ID: <CAMVTWDx0pPghAQTaAWrcUFounj5feu7KxtnERFEJ7waEdMR82w@mail.gmail.com>
To: David McNeil <dmcneil@revelytix.com>
Cc: Tomasz Pluskiewicz <tomasz.pluskiewicz@gmail.com>, public-rdb2rdf-comments@w3.org
I asked on the forum, but let me ask here.

are you expecting the R2RML engine to generate a blank node for each tuple,
or do you have a column value that you would like to use in order to
generate the blank node?

Juan Sequeda

On Fri, Jun 8, 2012 at 9:22 AM, David McNeil <dmcneil@revelytix.com> wrote:

> >From the latest R2RML draft:
> * a subject map is a term map,
> http://www.w3.org/2001/sw/rdb2rdf/r2rml/#dfn-term-map
> * the termType property can be used on term maps,
> http://www.w3.org/2001/sw/rdb2rdf/r2rml/#termtype
> So "yes", you can use termType on subject maps and this is how you would
> produce subjects as blank nodes.
> -David
Received on Friday, 8 June 2012 16:27:04 UTC

This archive was generated by hypermail 2.3.1 : Tuesday, 6 January 2015 19:45:17 UTC