Hi Lourens,
In general, when you run any sort of function ( aggregate, built-in,
etc ) in the projection part of the query you should also define an
alias for the variable using AS {varName}
select count(?s) as ?count_s ...
select ?s lang(?label) as ?lang ?p ?o
for example:
select
?s
?label
(lang(?label)) as ?lang
where
{
?s rdfs:label ?label .
}
limit 1
On Sat, Nov 28, 2009 at 8:53 AM, Lourens van der Meij <[email protected]> wrote:
> I am trying to get the hang of VSP and am currently a bit stuck on
> getting info from sparql queries in FOR constructs.
> Named variables are ok, but how do I get
> select (lang(?label)) count(..) ...
> values?
>
> A part of my VSP code(I got '$:subject' from a surrounding "FOR (sparql
> select .."):
> <td>
> <?vsp
> FOR (sparql select ?s_type where {$:subject a ?s_type}) DO {
> if (s_type = 'http://www.w3.org/2004/02/skos/core#Concept') {
> http('preflabels:');
> declare nr int;
> nr := 0;
> FOR (sparql select ?labl (lang(?labl)) where {$:subject
> skos:prefLabel ?labl}) DO {
> ^^^^^^^^^^ HOW DO I GET THE
> lang(?labl) VALUE?
> if (nr > 0 ) { http_value(',');}
> http_value(labl);
> nr := nr + 1;
> }
> } else if (s_type =
> 'http://data.catchplus.nl/rdf/config/ConceptSchemeGroup') {
> ...
>
> I would like access to sparql select values that are not named, here:
> "(lang(?labl))" from outside the sparql query.
>
> Also, are there more VSP example programs outside of the virtdocs.pdf
> and online parts of
> that document?
>
> Thanks,
>
> Lourens
>
>
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--
Aldo Bucchi
skype:aldo.bucchi
http://www.univrz.com/
http://aldobucchi.com/
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