Re: servlet question

Sure here here are the related classes

This is my element that defer

public class GetParentNames extends Element
{
    public void processElement()
    {
    System.out.println("/getParentNames");

    defer();
    }
}

and here is the servlet that works after the element above

public void doGet(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException {
                PrintWriter out = res.getWriter();
                StudentManager manager = new StudentManager();

                manager.display(new DbBeanFetcher<Student>(manager.getDatasource(),
Student.class)
                {
                        public boolean gotBeanInstance(Student friend)
                        {
                                System.out.println(friend.getName() + " " + friend.getSurname());
                                return true;
                        }
                });

                out.println("Test completed.");
                out.close();
        }

And the manager

public class StudentManager extends DbQueryManager
{

        public StudentManager()
        {
                super(Datasources.getRepInstance().getDatasource
(Config.getRepInstance().getString("DATASOURCE")));//here is where I
got the exception
        }
....
        public void display(DbRowProcessor processor)
        {
                Select select = new Select(getDatasource()).from
(TABLE_NAME_STUDENT).fields(Student.class).orderBy("name");
                executeFetchAll(select, processor);
        }
}

And finally the exception is as follows

Nov 28, 2008 5:01:38 PM org.mortbay.jetty.servlet.ServletHandler
handle
WARNING: /admin/getParentNames:
java.lang.NullPointerException
        at backend.dbmanagers.StudentManager.<init>(StudentManager.java:28)//
here is the call to super contructor
        at testutil.Test.doGet(Test.java:22)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:596)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)

On Nov 28, 8:53 am, Geert Bevin <gbe...@...> wrote: --~--~---------~--~----~------------~-------~--~----~
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