Re: negative test case question

Hi Juan

Thanks for this

On Feb 10, 2012, at 1:56 AM, Juan Sequeda wrote:

> Let me clarify
> 
> The following mapping is correct:
> 
> <TriplesMap1>
>     a rr:TriplesMap;
>     rr:logicalTable [ rr:tableName "Employees" ];
> 	rr:subjectMap [ rr:column "FirstName"; rr:termType rr:BlankNode ]; 
> 	rr:predicateObjectMap
>     [ 
>       rr:predicate foaf:name; 
>       rr:objectMap    [ rr:column "FirstName" ]
>     ]
>     .
> 
> The following mapping should fail:
> 
> <TriplesMap1>
>     a rr:TriplesMap;
>     rr:logicalTable [ rr:tableName "Employees" ];
> 	rr:subjectMap [ rr:column "FirstName" ]; 
> 	rr:predicateObjectMap
>     [ 
>       rr:predicate foaf:name; 
>       rr:objectMap    [ rr:column "FirstName" ]
>     ]
>     .
> 
> right?
> 
> 
According to the spec
<<
If the term map does not have a rr:termType property, then its term type is:

rr:Literal, if it is an object map and at least one of the following conditions is true:
It is a column-based term map.
It has a rr:language property (and thus a specified language tag).
It has a rr:datatype property (and thus a specified datatype).
rr:IRI, otherwise.
>>
So, if the FirstName column has "normal" first names … I think yes, it would fail

Richard?

Boris




> Juan Sequeda
> +1-575-SEQ-UEDA
> www.juansequeda.com
> 
> 
> On Thu, Feb 9, 2012 at 6:33 PM, Richard Cyganiak <richard@cyganiak.de> wrote:
> Juan,
> 
> On 9 Feb 2012, at 23:51, Juan Sequeda wrote:
> > I'm coming up with r2rml mappings that should fail.
> >
> > The following is correct:
> >
> > <TriplesMap1>
> >     a rr:TriplesMap;
> >     rr:logicalTable [ rr:tableName "Employees" ];
> >       rr:subjectMap [ rr:column "FirstName"; rr:termType rr:BlankNode ];
> >       rr:predicateObjectMap
> >     [
> >       rr:predicate foaf:name;
> >       rr:objectMap    [ rr:column "FirstName" ]
> >     ]
> >     .
> >
> >
> > If I take the rr:TermType rr:BlankNode, that should fail, right?
> 
> I'm not sure what you mean. Do you mean, if you add “rr:termType rr:BlankNode” to the object map, then it should fail?
> 
> Why do you think so?
> 
> Richard
>