Re: R2RML: generating subject's class from input data

+1 

Explaining that this property is just syntactic sugar and that more complex class mappings are possible via predicateObjectMap will be very useful.

Thanks for the comments,
Alex

On 15/03/2011, at 16:34, Richard Cyganiak wrote:

> On 15 Mar 2011, at 15:18, Souripriya Das wrote:
>> You have raised a good point, but we think the capability of using class template or class column is already possible using the current constructs.
> 
> How about adding a short explanation to the rr:class section:
> 
> “Note: This property is merely a shortcut for specifying an rr:predicateObjectMap with predicate rdf:type and the class URI as rr:object. To achieve a mapping where the class URI is not constant but needs to be computed based on the contents of the database, one can explicitly define an rr:predicateObjectMap with a non-constant rr:objectMap.”
> 
> Best,
> Richard
> 
> 
> 
>> 
>> For example,
>> ...
>> 			rr:classTemplate "
>> http://example.com/ontology/{Type
>> }"';
>> ...
>> 
>> can be replaced with
>> 
>>    rr:predicateObjectMap 
>>    [ 
>>      rr:predicateMap [ rr:predicate rdf:type ]; 
>>      rr:objectMap    [ rr:template "
>> http://example.com/ontology/{Type
>> }" ; rr:termType "IRI" ]
>>    ];
>> 
>> 
>> 
>> Thanks,
>> - Souri/Seema.
>> 
>> 
> 
>