postgresql with jdbc and stored procedures (functions): ResultSet - stored-procedures

Question

I just tried to call a stored function from the server (getStat), that is looking like this:
create type stat as (type text, location text, number int);
create function getStat() returns setof stat as 'select distinct table1.type, table1.location, table1.number from table1, table2 where table2.finding=10 order by number desc;' language 'sql';
Now here is the jdbc code:
CallableStatement callable = null;
String storedProc = "{call getStat(?, ?, ?)}";
try {
callable = connection.prepareCall(storedProc);
callable.registerOutParameter(1, java.sql.Types.VARCHAR);
callable.registerOutParameter(2, java.sql.Types.VARCHAR);
callable.registerOutParameter(3, java.sql.Types.INTEGER);
boolean results = callable.execute();
System.out.println(callable.getString(1));
System.out.println(callable.getString(2));
System.out.println(callable.getInt(3));
while(results){
ResultSet rs = callable.getResultSet();
while(rs.next()){
System.out.println(rs.getString(1));
System.out.println(rs.getString(2));
System.out.println(rs.getInt(3));
}
//rs.close();
results = callable.getMoreResults();
}
Okay, and now the problem:
When I am calling it, it just prints out the first line, of the whole bulk, that should be printend. Yeah, that is clear, because I execute the following code:
System.out.println(callable.getString(1));
System.out.println(callable.getString(2));
System.out.println(callable.getInt(3));
But I do the same in the while loop...and nothing more is displayed.
Maybe the problem is something obvious, but I am missing that :(
Thanks!

Answer 1

No need to use a CallableStatement with the {call ...} syntax.
Just use a select and a regular Statement:
Statement stmt = connection.createStatement();
ResultSet rs = stmt.executeQuery("select * from getStat()");
while (rs.next())
{
System.out.println(rs.getString(1));
System.out.println(rs.getString(2));
System.out.println(rs.getInt(3));
}