Problem with executing SPARQL command using jdbc or jena in Java

Question

Hi everybody
I am new to Oracle and SPARQL, so I'm sorry if my question is the elementry one!
select s, p, o  from table(SEM_MATCH( '(?s ?p ?o) (?s <htt...> ?o) ', SEM_Models('OWlTEST'), null, null, null ))
I have an SPARQL command which runs on Oracle correctly and returns 8 Rows. So far so good!
I tried two ways to use this command in java code:
Using java.sql.jdbc
stmt = conn.createStatement();
rs = stmt.executeQuery(...the whole command above ....);
if (rs.next()){
System.out.println(rs.getString("O"));
Problem: resultset returns only One row, which is the first row, althogh in debug mode I can see validRow=8!!!
Using com.hp.hpl.jena
Model model = ModelFactory.createDefaultModel();
String queryStr = "PREFIX : <.....> SELECT ?s ?p ?o  FROM  <...> WHERE {?s prefix:property ?o}";
Query query = QueryFactory.create(queryStr);
QueryExecution qexec = QueryExecutionFactory.create(query, model);
com.hp.hpl.jena.query.ResultSet results = qexec.execSelect();
for (;results.hasNext();) {
Problem: it returns nothing!!
Do you any Idea,
Thanks in advance
Sara

Answer 1

Sara,
I don't know about SPARQL not about jena, but for Java you need to change:
{code}
if (rs.next()) {..
{code}
to
{code}
while (rs.next()) {..
{code}
Otherwise you just fech and see only first row.
Look at : http://www.java2s.com/Code/JavaAPI/java.sql/ResultSetnext.htm
HTH
Thomas