On 15/09/2021 20:55, Martynas Jusevičius wrote:
You could maybe getPrologue() from the original query and then
setPrologue() on the resulting one.
https://jena.apache.org/documentation/javadoc/arq/org/apache/jena/query/Query.html#getPrologue()
Yes.
The algebra tralsation does include
(prefix ((e: <http://learningsparql.com/ns/expenses#>))
(project (?description ?mealTotal)
(extend ((?mealTotal ?.0))
(group (?description) ((?.0 (sum ?amount)))
(bgp
(triple ?meal e:description ?description)
(triple ?meal e:amount ?amount)
)))))
so it looks like it is just that OpAsQuery ignores it if anyone wants to
make a PR.
Andy
On Wed, Sep 15, 2021 at 9:51 PM Guillermo Coscarelli
<[email protected]> wrote:
Hi,
Right now when I parse a query that has prefixes and pass through the
Algebra.compile() method it expands all prefixes. Is there a way to keep
them
Code is basically:
PREFIX e: <http://learningsparql.com/ns/expenses#>
SELECT ?description (SUM(?amount) AS ?mealTotal)
WHERE
{ ?meal e:description ?description ;
e:amount ?amount
}
GROUP BY ?description
HAVING ( SUM(?amount) > 20 )
val q = QueryFactory.create(query)
val op = Algebra.compile(q)
OpAsQuery.asQuery(op)
SELECT ?description (SUM(?amount) AS ?mealTotal)
WHERE
{ ?meal <http://learningsparql.com/ns/expenses#description>
?description ;
<http://learningsparql.com/ns/expenses#amount> ?amount
}
GROUP BY ?description
HAVING ( SUM(?amount) > 20 )
I hope there is a way
Thanks
Guillermo.
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