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Re: Options on Property paths

From: Andy Seaborne <andy.seaborne@epimorphics.com>
Date: Mon, 02 Apr 2012 09:16:17 +0100
Message-ID: <4F796051.3000604@epimorphics.com>
To: public-rdf-dawg@w3.org


On 01/04/12 21:32, Polleres, Axel wrote:
> 6) change the semantics of * and + only, leave everything else as in LC, cf.
>      http://lists.w3.org/Archives/Public/public-rdf-dawg/2012JanMar/0285.html
>      http://lists.w3.org/Archives/Public/public-rdf-dawg/2012JanMar/0286.html
>      - Requires a new last call
>      - May lead to formal objections within the working group?
>       unsure whether it addresses commenters (mixing counting and non-counting)
>      + more intuitive for common reachability use cases than option 3

6.A:   /, |, ! as there are in 2LC.
6.B:   *, +, ? are non-counting
6.C:   No DISTINCT
6.D:   No {} forms: {n}, {n,m}, {n,}, {,m}

Option 6 also removes the {} forms.

+ Leaves the syntax open for the future
      e.g. {*}, {?length}, {?length>5}
+ {n,} is currently defined depending on *
+ {n,m} for large m-n, has the similar computability issues (WM-1)

	Andy
Received on Monday, 2 April 2012 08:17:02 GMT

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