W3C home > Mailing lists > Public > public-linked-json@w3.org > February 2013

RE: Inverse properties in JSON-LD

From: Markus Lanthaler <markus.lanthaler@gmx.net>
Date: Wed, 20 Feb 2013 15:20:46 +0100
To: "'David Rogers'" <david.rogers@bbc.co.uk>, <public-linked-json@w3.org>
Message-ID: <023501ce0f75$7ac5b290$705117b0$@lanthaler@gmx.net>
Hi David,

we have been discussing inverse properties in various contexts but decided
to not support them in JSON-LD 1.0. We tried to avoid micro-syntaxes such as
"^parent" whenever possible. So if we would be going to support it would
probably look more like this:

  "@context": [
      "children": { "@rev": "parent", "@type": "@id" }  
  "@id": "http://dbpedia.org/resource/John_Lennon",
  "name": "John Lennon",
  "born": "1940-10-09",
  "children": "http://dbpedia.org/resource/Sean_Lennon"

The example above overlays a local context over the remote context
"person.jsonld" and defines children to be the reverse of parent. It's
values are type-coerced to @id so that they are interpreted as IRIs.


Markus Lanthaler

> -----Original Message-----
From: David Rogers [mailto:david.rogers@bbc.co.uk] 
Sent: Tuesday, February 19, 2013 12:35 PM
To: public-linked-json@w3.org
Subject: Inverse properties in JSON-LD


I was wondering if inverse properties have been considered for JSON-LD?


  "@context": "http://json-ld.org/contexts/person.jsonld",
  "@id": "http://dbpedia.org/resource/John_Lennon",
  "name": "John Lennon",
  "born": "1940-10-09",
  "^parent": "http://dbpedia.org/resource/Sean_Lennon" <-- Sean is John’s

Where a symbol, such as ‘^’ indicates that the property is inverse of the
stated property.

Many thanks,

Dave Rogers 

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Received on Wednesday, 20 February 2013 14:21:21 UTC

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