# AGJenaUtils.java

`package com.franz.agjena.examples;
import com.franz.agjena.exceptions.NiceException;
import com.franz.agjena.query.AllegroGraphQuery;
import com.franz.agjena.query.AllegroGraphQueryExecutionFactory;
import com.franz.agjena.query.AllegroGraphQueryFactory;
import com.hp.hpl.jena.graph.Graph;
import com.hp.hpl.jena.query.QueryExecution;
import com.hp.hpl.jena.query.ResultSetFactory;
import com.hp.hpl.jena.query.ResultSetFormatter;
import com.hp.hpl.jena.rdf.model.Model;
import com.hp.hpl.jena.rdf.model.Statement;
import com.hp.hpl.jena.rdf.model.StmtIterator;
import com.hp.hpl.jena.rdf.model.impl.ModelCom;
import com.hp.hpl.jena.sparql.core.DatasetImpl;
import com.hp.hpl.jena.sparql.resultset.ResultSetRewindable;
public class AGJenaUtils {
/**
* Execute 'sparqlQuery' against 'model' and print a tabular result.
*/
public static void doQuery (String sparqlQuery, Model model) {
AllegroGraphQuery query = AllegroGraphQueryFactory.create(sparqlQuery) ;
System.out.println("Query: " + sparqlQuery);
QueryExecution qe = AllegroGraphQueryExecutionFactory.create(query, model) ;
ResultSetRewindable rs = ResultSetFactory.makeRewindable(qe.execSelect()) ;
ResultSetFormatter.out(rs) ;
qe.close() ;
}
/**
* Execute 'sparqlQuery' against 'graph' and print a tabular result.
*/
public static void doQuery (String sparqlQuery, Graph graph) {
AllegroGraphQuery query = AllegroGraphQueryFactory.create(sparqlQuery) ;
System.out.println("Query: " + sparqlQuery);
// THERE MUST BE A BETTER WAY TO DEFINE THE DATASET
QueryExecution qe = AllegroGraphQueryExecutionFactory.create(query, new DatasetImpl(new ModelCom(graph))) ;
ResultSetRewindable rs = ResultSetFactory.makeRewindable(qe.execSelect()) ;
ResultSetFormatter.out(rs) ;
qe.close() ;
}
/**
* Print all statements in 'model' showing also the model's graph.
*/
public static void printModel (Model model) {
try {
StmtIterator it = model.listStatements();
while (it.hasNext()) {
Statement st = (Statement)it.next();
System.out.println(st.toString() + " in " + model.getGraph().toString());
}
} catch (Exception ex) {throw new NiceException(ex);}
}
}
`

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