Hibernate Oracle nested CURSOR

Question

Hi All,
I'm connecting to an Oracle database, and accessing a function that returns a SYS_REFCURSOR. I can succesfully map the function using the following syntax:
@NamedNativeQuery( name = "blah_list"
, query = "{ call blah__function(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)}"
, resultClass = blah.class
, hints = { @QueryHint(name = "org.hibernate.callable", value = "true")
, @QueryHint(name = "org.hibernate.readOnly", value = "true")
I can access the resultset it returns.
The issue is, within the resultset, there are nested CURSOR's.. ie:
SELECT my_column1, my_column2
,CURSOR (
SELECT my_column1
FROM my_table2
WHERE blah = blah ) column3
FROM my_table1
My question is, how do I loop through the resultset from the nested cursor? In the above, I can succesfully iterate through my_column1 and my_column2, but I can't through column3... Any ideas?!
Thanks very much! :)

Answer 1

What do you have so far?
Perhaps this will point you in the right direction.
    -- Return a ref cursor as an output parameter.
    CallableStatement cs = conn.prepareCall("begin open :c for select dummy, cursor(select dummy from dual) from dual; end;");
    cs.registerOutParameter(1, OracleTypes.CURSOR);
    cs.execute();
    -- Treat the output parameter as a result set.
    -- Column 1: String
    -- Column 2: Cursor (ResultSet)
    ResultSet rs = (ResultSet)cs.getObject(1);
    while(rs.next()) {
      String x = rs.getString(1);
      System.out.println("Column 1: " + x);
      -- Second column is a result set
      -- Column 1: String
      ResultSet c = (ResultSet)rs.getObject(2);
      while(c.next()) {
        String x2 = c.getString(1);
        System.out.println(" - Column 2: " + x2);
    cs.close();
Column 1: X
- Column 2: X