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[XSCH] Review of SPARQL extended tests

From: Jeremy Carroll <jjc@hplb.hpl.hp.com>
Date: Thu, 18 Nov 2004 12:01:01 +0000
Message-ID: <419C8EFD.7050202@hplb.hpl.hp.com>
To: SWBPD <public-swbp-wg@w3.org>
CC: Andy Seaborne <Andy_Seaborne@hplb.hpl.hp.com>, "Eric Prud'hommeaux" <eric@w3.org>


An action from Bristol SWBPD F2F:

ACTION: JJC review SPARQL WD re
      http://www.w3.org/TR/2004/WD-rdf-sparql-query-20041012/#extendedtests


Three points (second more significant)

1) (I guess obvious to editors and uninteresting to everyone else)
The text "unbound variables cause an error." will need clarification in 
later drafts. Processing order needs to be addressed, since a typical 
engine will plan query evaluation order, to try and not have unbound 
variables

2)
This section largely presupposes that RDF Datatypes *are* XML Schema 
datatypes *are* XSLT/XQuery F&O datatypes; thus somewhat presupposes 
that the answer to the value space question is the one given by XPath 2.0.

Personally I think this makes a lot of sense, but it will need 
highlighting in our WD on datatypes, as one of the key advantages of 
going with the XPath 2.0 answer to what the datatype values are. The 
ability to reuse the F&O work (which is very extensive and comprehensive).

While it would be possible to go with the other answers to the value 
space question (i.e. all different, or more are the same) without 
invalidating section 12 of SPARQL, it is likely to cause conceptual and 
in the end implementation difficulties ...

Suggested actions:
   - me include link to this section from SWBPD draft nore
   - SWBPDWG include DAWG on our pre-release review of datatypes note 
planned for christmas

3) editorial - ToC href links for 12.1 and 12.2 are incorrect

Jeremy
Received on Thursday, 18 November 2004 12:01:38 UTC

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