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RE: SPARQL working group - call for suggested features

From: Orri Erling <erling@xs4all.nl>
Date: Sun, 15 Mar 2009 23:36:21 +0100
Message-Id: <200903152236.n2FMaOjR004803@smtp-vbr5.xs4all.nl>
To: "'Chabot Bernard'" <chabot.bernard@gmail.com>, <public-rdf-dawg-comments@w3.org>







This would be done as 


select ?part ?doc  where { <assemblye123> <has_part> part option
(transitive, t_distinct) . ?part  <has_doc> ?doc }


in Virtuoso 6.


I think it would be 


<assembly123> <has_part> * ?part instead of the transitive patter in Arq.
The idea is the same, the supported switches are different.










From: public-rdf-dawg-comments-request@w3.org
[mailto:public-rdf-dawg-comments-request@w3.org] On Behalf Of Chabot Bernard
Sent: Wednesday, March 11, 2009 10:36 AM
To: public-rdf-dawg-comments@w3.org
Subject: Re: SPARQL working group - call for suggested features




I would like to suggest a feature allowing a recursive research in a RDF


For example if my graph describe a hierarchic BOM (Bill of Material) linking
"Part" instances together through a "has_part" predicat

and each "Part" linked with "Document" instances through a "documented_by"


How to retrieve :

   - All the "Document" linked to one given "Part" and all the "Document
linked to the sub-parts of this given "Part" ?


Motivation : 

It is a very frequent question in the PLM area (Product Lifecycle
Management) !







On Wed, Mar 4, 2009 at 8:11 PM, CHB <chabot.bernard@gmail.com> wrote:




Sent to you by CHB via Google Reader:



SPARQL working group - call for suggested features

via W3C <http://www.w3.org/blog/SW>  Semantic Web Activity News by Lee
Feigenbaum on 03/03/09


The SPARQL Working <http://www.w3.org/2009/sparql/wiki/>  Group has started
up and is beginning its work by gathering potential features to extend the
SPARQL language, protocol, results format, and/or general SPARQL landscape.

We invite all members of the community to suggest features/extensions to
SPARQL that you find most important. To contribute, please do the following:

1.	Check the <http://www.w3.org/2009/sparql/wiki/Category:Features>
list of existing feature suggestions to make sure your suggestion has not
already been recorded.
2.	Send email to public-rdf-dawg-comments@w3.org
<http://www-mit.w3.orgmailto:public-rdf-dawg-comments@w3.org>  with your
suggestion, including this information: 

*	A description of the feature
*	An example of the feature in action (e.g. sample syntax, sample HTTP
requests, sample XML documents, ...)
*	Information on existing implementations of the feature
*	Motivating use cases for the feature (i.e. why do you find it

Please note that due to time and resource constraints, the SPARQL Working
Group expects to accept for further work only a small fraction of the total
number of features considered. The Working Group does not expect to respond
directly to all submitted feature suggestions.

The Working Group is pursuing an aggressive schedule. Please submit
suggestions by Tuesday, March 10, 2009. 




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Bernard Chabot
PLM Consultant
PCO Innovation
Received on Sunday, 15 March 2009 22:37:02 UTC

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