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Representing RDF Literals/Resources as JSON Strings

From: Hammond, Tony <t.hammond@nature.com>
Date: Wed, 06 Jun 2007 17:31:57 +0100
To: <semantic-web@w3.org>
Message-ID: <C28CA00D.2A84%t.hammond@nature.com>

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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Received on Wednesday, 6 June 2007 16:32:23 UTC

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