CASTing Table Type to Cursor

Question

Hi,
I have req. that A proc is calling B proc which in turn return me a set of records in table type. Then i manipulate the data in A proc and i want to return this set in cursor type.
could you please help me. here i have pasted my example.
CREATE OR REPLACE TYPE oemp AS OBJECT
     eno     number(4),
     enm     varchar2(10),
     sal     number(7,2)
CREATE OR REPLACE TYPE temp AS TABLE OF oemp;
Proc B:=
procedure showemp( dno in number, disp out temp)
is
l_str varchar2(1000);
begin
l_str := 'select oemp(empno, ename, sal) from emp where deptno = :dno';
execute immediate l_str
bulk collect into disp
using dno;
exception
when no_data_found then
null;
end;
CREATE OR REPLACE TYPE odemp AS OBJECT
     eno     number(4),
     enm     varchar2(10),
     sal     number(7,2),
com number(7,2)
proc A:
procedure showempdet_cur(idno in number, oshow out cursor_type)
is
ishow temp;
type tde is table of odemp;
o_emp tde := tde();
begin
--Call to Proc A
showemp(idno, ishow);
if ishow.count > 0 then
for i in ishow.first..ishow.last loop
o_emp.extend;
o_emp(o_emp.last) := odemp(ishow(i).eno, ishow(i).enm, ishow(i).sal, ishow(i).sal * .1);
end loop;
end if;
-- here I want to return this o_emp table outside as cursor type
-- i want to use this proc in crystal report which does not accept table type
--return type
end;
hope this will help..I was trying to use CAST with MULTISET option..but some where i am doing wrong..
help will appreciated.
Thanks
RSD

Answer 1

You can query only sql-collections.
SQL> create or replace type table_of_odemp as table of odemp;
SQL> /
Type created.
SQL>
SQL> var c refcursor
SQL>
SQL> declare
SQL>   o_emp table_of_odemp := table_of_odemp();
SQL> begin
SQL>   for i in 1..5 loop
SQL>     o_emp.extend;
SQL>     o_emp(o_emp.last) := odemp(i, 'Name'||i, i*1000, i*50);
SQL>   end loop;
SQL>   open :c for select * from table(cast(o_emp as table_of_odemp));
SQL> end;
SQL> /
PL/SQL procedure successfully completed.
SQL>
SQL> print c
          ENO ENM                  SAL           COM
            1 Name1               1000            50
            2 Name2               2000           100
            3 Name3               3000           150
            4 Name4               4000           200
            5 Name5               5000           250