Hello Kumar,
why don't you print the query string in Java first to the console using
System.out.println(queryString); ? Then you will see how your
concatenated string looks like and that there is a missing space after
?y resp. before WHERE.
Kind regards,
Lorenz
Thank you the syntax error removes but it gives me error "xWHERE".. I know
very minor mistake but not sure where it is.
__________________________________________________________________________
*String querystring="PREFIX ss:<http://www.semanticweb.org
<http://www.semanticweb.org>>" +"SELECT ?y" +*
* "WHERE {" + " ?y ss:hasson ss:zia " + "}";*
___________________________________________________________________________
On Thu, Aug 20, 2015 at 9:48 PM, Andy Seaborne <a...@apache.org> wrote:
On 20/08/15 21:19, aj...@virginia.edu wrote:
This may or may not be the entire problem, but in the line:
String querystring="PREFIX ss:<http://www.semanticweb.org"; +"SELECT ?x"
+ "WHERE {" + "?x ss:hasson ss:zia" + "}";
you opened the angle-brackets around your namespace without closing them.
Exactly.
Exception in thread "main" com.hp.hpl.jena.query.QueryParseException:
Encountered " "<" "< "" at line 1, column 11.
Put some newlines into the string!
... and then the next error is at "SELECT ?x" + "WHERE whch is
"SELECT ?xWHERE {"
i.e a variable called "xWHERE"
---
A. Soroka
The University of Virginia Library
On Aug 20, 2015, at 4:15 PM, kumar rohit <kumar.en...@gmail.com> wrote:
import java.io.InputStream;
import com.hp.hpl.jena.ontology.OntDocumentManager;
import com.hp.hpl.jena.ontology.OntModel;
import com.hp.hpl.jena.ontology.OntModelSpec;
import com.hp.hpl.jena.query.Query;
import com.hp.hpl.jena.query.QueryExecution;
import com.hp.hpl.jena.query.QueryExecutionFactory;
import com.hp.hpl.jena.query.QueryFactory;
import com.hp.hpl.jena.query.ResultSet;
import com.hp.hpl.jena.query.ResultSetFormatter;
import com.hp.hpl.jena.rdf.model.ModelFactory;
import com.hp.hpl.jena.util.FileManager;
public class famtree {
static final String inputfile =("C://Users//asad
ali//Desktop//Project//protege//relation.owl");
public static void main(String[] args) {
OntDocumentManager mgr=new OntDocumentManager();
OntModelSpec spec=new OntModelSpec(OntModelSpec.OWL_DL_MEM);
spec.setDocumentManager(mgr);
OntModel m = ModelFactory.createOntologyModel(spec,null);
InputStream in=FileManager.get().open(inputfile);
if (in==null)
{
throw new IllegalArgumentException("File" + inputfile + "not found");
}
m.read(in,"");
String querystring="PREFIX ss:<http://www.semanticweb.org"; +"SELECT ?x"
+
"WHERE {" + "?x ss:hasson ss:zia" + "}";
Query query=QueryFactory.create(querystring);
QueryExecution qe = QueryExecutionFactory.create(query, m);
ResultSet results = qe.execSelect();
ResultSetFormatter.out(System.out, results, query);
qe.close();
}
}
The following error displays in Eclipse
___________________________________
Exception in thread "main" com.hp.hpl.jena.query.QueryParseException:
Encountered " "<" "< "" at line 1, column 11.
Was expecting:
<IRIref> ...
at
com.hp.hpl.jena.sparql.lang.ParserSPARQL11.perform(ParserSPARQL11.java:102)
at
com.hp.hpl.jena.sparql.lang.ParserSPARQL11.parse$(ParserSPARQL11.java:53)
at com.hp.hpl.jena.sparql.lang.SPARQLParser.parse(SPARQLParser.java:34)
at com.hp.hpl.jena.query.QueryFactory.parse(QueryFactory.java:148)
at com.hp.hpl.jena.query.QueryFactory.create(QueryFactory.java:80)
at com.hp.hpl.jena.query.QueryFactory.create(QueryFactory.java:53)
at com.hp.hpl.jena.query.QueryFactory.create(QueryFactory.java:41)
at familytree.famtree.main(famtree.java:37)
--
Lorenz Bühmann
AKSW group, University of Leipzig
Group: http://aksw.org - semantic web research center
