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Re: Representing RDF Literals/Resources as JSON Strings

From: Ivan Herman <ivan@w3.org>
Date: Thu, 07 Jun 2007 11:47:53 +0200
Message-ID: <4667D449.2040905@w3.org>
To: "Hammond, Tony" <t.hammond@nature.com>
CC: semantic-web@w3.org
Tony,

the only example that comes to my mind is the W3C note

Serializing SPARQL Query Results in JSON
http://www.w3.org/TR/rdf-sparql-json-res/

maybe it gives you some inspiration...

Ivan

Hammond, Tony wrote:
> Hi:
> 
> I am making use of JSON to map an RDF profile but am wondering how best to
> represent RDF literals and resources as JSON strings.
> 
> Leaving aside blank nodes and numeric/boolean literals, N3/Turtle makes a
> clear syntactic distinction between the following four kinds of values:
> 
>     * literal = quotedString | datatypeString
> 
>       1. quotedString = '"' string '"'
> 
>       2. datatypeString = quotedString '^^' resource
> 
>     * resource = uriref | qname
> 
>       3. uriref = '<' uri '>'
> 
>       4. qname = prefix ':' name
> 
> With JSON all (simple or primitive) values are (double) quoted strings. One
> possibile syntax might be the following:
> 
>       1. quotedString = '"' string '"'
> 
>       2. datatypeString = ??
> 
>       3. uriref = '"' '<' uri '>' '"'
> 
>       4. qname = '"' '<[' prefix ':' ']>' '"'
> 
> with qname here taking a cue from CURIE's.  (Alternatively one could treat
> qname the same as uriref and disambiguate depending on whether a prefix
> namespace was declared.)
> 
> So, #1 is a natural match, #3 is passable, #4 is heavier but still a
> possibility, and �2 ... well, I just don't know.
> 
> Was wondering if anybody else had done some work in this area and arrived at
> any conclusions.
> 
> Cheers,
> 
> Tony
> 
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-- 

Ivan Herman, W3C Semantic Web Activity Lead
URL: http://www.w3.org/People/Ivan/
PGP Key: http://www.cwi.nl/%7Eivan/AboutMe/pgpkey.html
FOAF: http://www.ivan-herman.net/foaf.rdf


Received on Thursday, 7 June 2007 09:48:02 UTC

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