Returning ResultSets to jsp

Question

Hi,
I'm using a javabean that returns a resultset from oracle and i need that resultset to execute another query so i can return the data to a jsp. My problem is it will only execute through a while loop once as i have passed it to a String. Does anyone have any idea how i could go about this? So far I've been using while loops eg.
     result = select.executeQuery("select * from score where stu_score = 10 and level_id = 1");
          while(result.next())      
String s = result.getString("stu_id");
System.out.println(s);
result = select.executeQuery("Select stu_name from Student where stu_id = '"+s+"'");
while(result.next())
     String r = result.getString("stu_name");
     System.out.println(r);
This will return one stu_id and one stu_name. Any ideas?

Answer 1

Hi,
You are getting results from the database and storing them in result. Inside your outermost while loop you are overwriting the same object i.e. result, by saying
result = select.executeQuery("Select stu_name from Student where stu_id = '"+s+"'");
That is why you only get one stu_id and one stu_name. Outside the first while loop, declare another ResultSet object, call it result2, and use that one inside.
However, I strongly recommend not to run such code in a jsp. Do this in a servlet, and set your results that you get through the resultsets in a data transfer object, store it in the request or session, and then get it in the jsp. Also, remeber to close your resultset, statment, and connection objects, otherwise you will suffer from the open cursors problem - eventually! And above all, that is the right way of doing stuff.
Hope this helps.