Hi Lorenz,
Thank you for your reply. Yes, I used maven to build the project. Here are
dependencies details:
Hi Lorenz,
Yes, I used maven to build the project. Here are the dependencies details:
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.jena</groupId>
<artifactId>apache-jena-libs</artifactId>
<version>5.0.0-rc1</version>
<type>pom</type>
</dependency>
<dependency>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<version>3.6.0</version>
<type>maven-plugin</type>
</dependency>
<dependencies>
Best regards,
Pan
On Tue, Mar 12, 2024 at 7:13 AM Lorenz Buehmann <
buehm...@informatik.uni-leipzig.de> wrote:
> Hi,
>
> how did you setup your project? Which Jena version? Do you use Maven?
> Which dependencies? It looks like ARQ.init() hasn't been called which
> should happen automatically if the setup of the project is correct.
>
>
> Cheers,
> Lorenz
>
> On 11.03.24 14:44, Anna P wrote:
> > Dear Jena support team,
> >
> > Currently I just started to work on a SPARQL project using Jena and I
> could
> > not get a solution when I query a model.
> > I imported a turtle file and ran a simple query, and the snippet code is
> > shown below. However, I got the error.
> >
> > public class App {
> > public static void main(String[] args) {
> > try {
> > Model model = RDFDataMgr.loadModel('data.ttl', Lang.TURTLE);
> > RDFDataMgr.write(System.out, model, Lang.TURTLE);
> > String queryString = "SELECT * { ?s ?p ?o }";
> > Query query = QueryFactory.create(queryString);
> > QueryExecution qe = QueryExecutionFactory.create(query,
> model);
> > ResultSet results = qe.execSelect();
> > ResultSetFormatter.out(System.out, results, query);
> > qe.close();
> > } catch (Exception e) {
> > e.printStackTrace();
> > }
> > }
> > }
> >
> > Here is the error message:
> >
> > org.apache.jena.riot.RiotException: Not registered as a SPARQL result set
> > output syntax: Lang:SPARQL-Results-JSON
> > at
> >
> org.apache.jena.sparql.resultset.ResultsWriter.write(ResultsWriter.java:179)
> > at
> >
> org.apache.jena.sparql.resultset.ResultsWriter.write(ResultsWriter.java:156)
> > at
> >
> org.apache.jena.sparql.resultset.ResultsWriter.write(ResultsWriter.java:149)
> > at
> >
> org.apache.jena.sparql.resultset.ResultsWriter$Builder.write(ResultsWriter.java:96)
> > at
> >
> org.apache.jena.query.ResultSetFormatter.output(ResultSetFormatter.java:308)
> > at
> >
> org.apache.jena.query.ResultSetFormatter.outputAsJSON(ResultSetFormatter.java:516)
> > at de.unistuttgart.ki.esparql.App.main(App.java:46)
> >
> >
> > Thank you for your time and help!
> >
> > Best regards,
> >
> > Pan
> >
> --
> Lorenz Bühmann
> Research Associate/Scientific Developer
>
> Email buehm...@infai.org
>
> Institute for Applied Informatics e.V. (InfAI) | Goerdelerring 9 | 04109
> Leipzig | Germany
>
>
