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PROV-ISSUE-353 (optional-id-syntactic-marker): Introduce a syntactic marker for when optional id is expressed [prov-n]

From: Provenance Working Group Issue Tracker <sysbot+tracker@w3.org>
Date: Thu, 19 Apr 2012 14:12:39 +0000
Message-Id: <E1SKs6B-0002kS-1y@nelson.w3.org>
To: public-prov-wg@w3.org
PROV-ISSUE-353 (optional-id-syntactic-marker): Introduce a syntactic marker for when optional id is expressed [prov-n]

http://www.w3.org/2011/prov/track/issues/353

Raised by: James Cheney
On product: prov-n


Implement rule for optional first argument

- id is at the beginning and followed by a different symbol (say, semicolon) if present, to make it trivial to see whether there's an id present;


Another possibility could be to prefix the id argument with a special character such as @ in order to make its special role as the optional first-argument identifier clear:

wasGeneratedBy(@id,e,a,-)
wasGeneratedBy(e,a,-)

instead of 
wasGeneratedBy(id,  e,a,-)
wasGeneratedBy(e,a,-)
Received on Thursday, 19 April 2012 14:12:50 GMT

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