[oslc-core] Question on oslc.properties

[Steve K Speicher]

Thanks,
Steve Speicher | IBM Rational Software | (919) 254-0645


oslc-core-bounces at open-services.net wrote on 03/14/2012 10:05:40 AM:

> From: Ian Green1 <ian.green at uk.ibm.com>
> To: oslc-core at open-services.net, 
> Cc: Brett Graf <brett.graf at uk.ibm.com>
> Date: 03/14/2012 10:08 AM
> Subject: [oslc-core] Question on oslc.properties
> Sent by: oslc-core-bounces at open-services.net
> 
> Would someone confirm/clarify the behaviour of oslc.properties in the 
case 
> of resources containing blank nodes? 
> 
> 
> Consider the following RDF (turtle): 
> 
> @prefix dc: <http://purl.org/dc/terms/>. 
> @prefix oslc_rm: <http://open-services.net/ns/rm#>. 
> @prefix foaf: <http://xmlns.com/foaf/0.1/>. 
> @prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>. 
> @prefix doors: <http://doors.example.com/req/>. 
> 
> doors:r1 a oslc_rm:Requirement; 
>    dc:title "Title"; 
>    dc:contributor [ a foaf:Person; foaf:givenName "caligula" ]. 
> 
> 
> The following request 
> GET /req/r1?oslc.properties=* 
> Host: doors.example.com 
> 
> Will return the following RDF: 
> @prefix dc: <http://purl.org/dc/terms/>. 
> @prefix oslc_rm: <http://open-services.net/ns/rm#>. 
> @prefix foaf: <http://xmlns.com/foaf/0.1/>. 
> @prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>. 
> @prefix doors: <http://doors.example.com/req/>. 
> 
> doors:r1 a oslc_rm:Requirement; 
>    dc:title "Title"; 
>    dc:contributor [ ]. 
> 
> 
> Which is not really that useful.   Nested properties could be requested 
but 
> this may include more information that desired.  Beyond V2, what might 
be 
> more useful is a concise bounded description [1] of the blank node to be 

> included in the response. 

Well if a client want to get specific, it could just use:

GET /req/r1?oslc.properties=dc:title,dc:contributor{*}
 
> Any comments or clarifications? 
> 
> [1] http://www.w3.org/Submission/2004/SUBM-CBD-20040930/ 

What would the priority of this be for immediate resolution?  Looks at our 
list of items, seems like it is fairly narrow and not necessarily a 
widespread problem.  Please confirm/deny.

- Steve