Getting DTD structure from Oracle DOMParser

Question

I am having trouble getting DTD structure from DOMParser after I parse the xml file with external DTD.
When I do:
xmlDOMParser.parse(new FileInputStream(xmlFile));
XMLDocument xmlDoc=xmlDOMParser.getDocument();
DTD docType=xmlDOMParser.getDoctype();
NamedNodeMap nodeMap=docType.getElementDecls();
the nodeMap is equal to null.
I need to get the element structure of DTD, how can I do that?

Answer 1

The below example is working fine for me
create table t1
   as
    select object_id id, object_name text
      from all_objects;
Create table t2
  as
  select t1.*, 0 session_id
    from t1
   where 1=0;
CREATE OR REPLACE TYPE t2_type
AS OBJECT (
  id         number,
  text       varchar2(30),
  session_id number
create or replace type t2_tab_type
as table of t2_type
create or replace
  function parallel_pipelined( l_cursor in sys_refcursor )
  return t2_tab_type
  pipelined
  parallel_enable ( partition l_cursor by any )
  is
      l_session_id number;
      l_rec        t1%rowtype;
  begin
      select sid into l_session_id
        from v$mystat
       where rownum =1;
      loop
          fetch l_cursor into l_rec;
          exit when l_cursor%notfound;
          -- complex process here
          pipe row(t2_type(l_rec.id,l_rec.text,l_session_id));
      end loop;
      close l_cursor;
      return;
  end;
  /And its getting executed in parallel
SQL> select DISTINCT session_id
  2    from table(parallel_pipelined
  3              (CURSOR(select /*+ parallel(t1) */ *
  4                        from t1 )
  5               ))
  6  ;
SESSION_ID
       221
        76
        77
       241
       161
       152
       160
       302
       232
       313
        73
SESSION_ID
       292
12 rows selected.But why its getting disconnected in my scenario. ???