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Re: comment on /2001/11/13-RDF-Query-Rules/ re 'single arc languages'

From: Uche Ogbuji <uche.ogbuji@fourthought.com>
Date: Sat, 22 Mar 2003 13:22:09 -0700
Message-ID: <3E7CC5F1.3060106@fourthought.com>
To: "Eric Prud'hommeaux" <eric@w3.org>
CC: Libby Miller <Libby.Miller@bristol.ac.uk>, Dan Brickley <danbri@w3.org>, www-rdf-rules <www-rdf-rules@w3.org>

Eric Prud'hommeaux wrote:

>On Fri, Mar 21, 2003 at 01:08:42PM -0700, Uche Ogbuji wrote:
>  
>
>>>I think Versa might be one of these 'single arc' types - see
>>>http://uche.ogbuji.net:8080/uche.ogbuji.net/tech/rdf/versa/versa.doc?xslt=/ftss/data/docbook_html1.xslt
>>>
>>>and especially
>>>
>>>http://uche.ogbuji.net:8080/uche.ogbuji.net/tech/rdf/versa/versa-by-example.txt
>>>      
>>>
>> Versa does not not work naturally with cartesian products, but I
>>think that any query of the sort Eric charaterizes can be expressed
>>in Versa, though the results are usually not pretty.
>>    
>>
>
>If you show me how, I'll put it in the query survey.
>  
>

I think I've lost the thread.  I thought you were talking about this 
single/multi arc distinction in the archives.  Did you post a paritcular 
example of a query which requires aggregation from a cartesian product?  
If so, please re-post it, or post a pointer to it, and I'll see if I can 
work ut a Versa equivalent.

-- 
Uche Ogbuji                                    Fourthought, Inc.
http://uche.ogbuji.net    http://4Suite.org    http://fourthought.com
Universal Business Language (UBL) - http://www-106.ibm.com/developerworks/xml/library/x-think16.html
EXSLT by example - http://www-106.ibm.com/developerworks/library/x-exslt.html
The worry about program wizards - http://www.adtmag.com/article.asp?id=7238
Use rdf:about and rdf:ID effectively in RDF/XML - http://www-106.ibm.com/developerworks/xml/library/x-tiprdfai.html
Keep context straight in XSLT - http://www-106.ibm.com/developerworks/xml/library/x-tipcurrent.html
Python Generators + DOM - http://www.xml.com/pub/a/2003/01/08/py-xml.html
Using SAX for Proper XML Output - http://www.xml.com/pub/a/2003/03/12/py-xml.html
SAX filters for flexible processing - http://www-106.ibm.com/developerworks/xml/library/x-tipsaxflex.html
Received on Saturday, 22 March 2003 15:23:45 GMT

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