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| import com.hp.hpl.jena.query.*;
import com.hp.hpl.jena.query.ResultSet;
import com.hp.hpl.jena.rdf.model.*;
import com.hp.hpl.jena.rdf.model.impl.LiteralImpl;
import com.hp.hpl.jena.sparql.util.IndentedWriter;
import com.hp.hpl.jena.vocabulary.*;
import com.hp.hpl.jena.util.FileManager;
public class premier {
private static final String rdf = RDF.getURI();
private static final String up = "http://purl.uniprot.org/core/";
public static final String go_file = "O57539.rdf";
public static final String NL = System.getProperty("line.separator") ;
public static void main(String[] args)
{
Model m = ModelFactory.createDefaultModel();
// use the file manager to load RDF descriptions into the model
FileManager.get().readModel(m, go_file);
// nombre de triplets du graphe genere
System.out.println("nombre de triplets dans le modele O57539 : "+m.size());
//Exploiter le graphe RDF
// m.write(System.out);
String prolog_up = "PREFIX uniprot: <"+up+">" ;
// String prolog_rdf = "PREFIX rdf: <"+RDF.getURI()+">" ;
// Query string.
// String queryString = prolog_up + NL + prolog_rdf + NL +
String queryString = prolog_up + NL +
"SELECT ?sujet ?objet "
+ "WHERE {?sujet uniprot:mnemonic ?objet }" ;
Query query = QueryFactory.create(queryString) ;
// Print with line numbers
query.serialize(new IndentedWriter(System.out,true)) ;
System.out.println() ;
// Create a single execution of this query, apply to a model
// which is wrapped up as a Dataset
QueryExecution qexec = QueryExecutionFactory.create(query, m) ;
// Or QueryExecutionFactory.create(queryString, model) ;
System.out.println("Essai sur les ressources qui possedent un mnemonic : ") ;
try {
// Assumption: it's a SELECT query.
ResultSet rs = qexec.execSelect() ;
// The order of results is undefined.
for ( ; rs.hasNext() ; )
{
QuerySolution rb = rs.nextSolution() ;
// Get title - variable names do not include the '?' (or '$')
System.out.print("Sujet "+rb.getResource("sujet").getLocalName());
Literal rd = (Literal) rb.getLiteral("objet");
System.out.println("Sujet "+rd.getLexicalForm());
}
}
finally
{
// QueryExecution objects should be closed to free any system resources
qexec.close() ;
}
}
} |
