Thanks for your answer!
I think that the problem is that I don't know how to create the Select
object ("spinQuery" in the example) without refering to the query string.
>From the example:
Select spinQuery = (Select) arq2SPIN.createQuery(arqQuery, null);
arqQuery was created using the query String. I only have the Jena Model.
This is problably something trivial, but I'm quite at loss here.
On Tuesday, July 29, 2014 2:03:19 AM UTC-3, Holger Knublauch wrote:
>
> Hi Jorge,
>
> to confirm: is your question how to convert from a SPIN RDF (Jena) object
> into a string representation? This is done as below using
> spinQuery.toString(). Additional options (such as whether to generate or
> use prefixes) can be used via Printable.print(PrintContext) which is
> implemented by all SPIN Command classes.
>
> The Jena Query object is needed to go from a string to SPIN RDF, because
> the SPIN API uses the Jena Query object model to build corresponding SPIN
> RDF triples.
>
> Does this answer your question?
>
> Holger
>
>
>
> On 7/29/14, 2:47 PM, Jorge Gastaldi wrote:
>
>
> I'm quite new at SPIN-API. I'm trying to convert an SPARQL query to SPIN
> SPARQL, modify the query using SPIN rules and rebuild the query as a
> String, and I'm currently stuck at that last step.
>
> I used the SPINParsingExample,java example from the SPIN-API
> distribution for the text to Model convertion. The same example rebuilds
> the query, but it does it this way:
>
>
> Query arqQuery = ARQFactory.get().createQuery(model, query);
> ARQ2SPIN arq2SPIN = new ARQ2SPIN(model);
> Select spinQuery = (Select) arq2SPIN.createQuery(arqQuery, null);
> System.out.println("SPIN query in Turtle:");
> model.write(System.out, FileUtils.langTurtle);
> System.out.println("-----");
> String str = spinQuery.toString();
> System.out.println("SPIN query:\n" + str);
> // Now turn it back into a Jena Query
> Query parsedBack = ARQFactory.get().createQuery(spinQuery);
> System.out.println("Jena query:\n" + parsedBack);
>
>
> All the convertion depends from the arqQuery that was built with
> "query", the original string query. So, if I want to get the query String
> of a model containing a different query I don't know where to start.
>
> Thanks in advance,
> Jorge
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