Object type issue

Question

Hi, 
I have a business requirement,where I'll be getting associative array as a INPUT parameter to a procedure,I Need to query the values in the collection in a table. What would be the best way?
I tried the below approach
Create two object types
create or replace
type t_st_id as object (
supply_type_id varchar2(50)
Create type t_nested_st_id IS TABLE OF t_st_id;
Also created the below function
create or replace
function return_st_id(p_in_st_id IN t_st_id) return T_NESTED_ST_ID as
  v_ret_st_id   T_NESTED_ST_ID;
BEGIN 
v_ret_st_id:=T_NESTED_ST_ID();
FOR i IN 1..p_in_st_id.count
LOOP
  v_ret_st_id.extend;
  v_ret_st_id(v_ret_st_id.last):= T_st_id(p_in_st_id(i));
END LOOP;
   return v_ret_st_id;
end return_st_id;
But got this Error
5,24): PLS-00302: component 'COUNT'
must be declared
Could you please help me out in this resolving issue? Also is there any better way to handle this type of prob
Regards,
Achyut K

Answer 1

Karthick_Arp wrote:
create or replace type t_st_id as object (supply_type_id varchar2(50));
create type t_nested_st_id is table of t_st_id;
This is not associative array. This is a nested table. I think i understand what you want let me give an example using emp table.
The scenario is user will pass a list of empno and we we will get ename for that empno.
SQL> create or replace type empno_table as table of integer
  2  /
Type created.
SQL> create or replace type emp_obj as object(empno integer, ename varchar2(100))
  2  /
Type created.
SQL> create or replace type emp_table as table of emp_obj
  2  /
Type created.
SQL> create or replace function get_emp_detail
  2  (
  3    p_empno_list empno_table
  4  )
  5  return emp_table
  6  pipelined
  7  as
  8  begin
  9     for i in (select emp_obj(empno, ename) emp_detail
10                 from emp
11                where empno in (select column_value
12                                  from table(p_empno_list)))
13     loop
14        pipe row(i.emp_detail);
15     end loop;
16
17     return;
18  end;
19  /
Function created.
SQL> select *
  2    from table(get_emp_detail(empno_table(7369,7499,7521)));
     EMPNO ENAME
      7369 SMITH
      7499 ALLEN
      7521 WARD
SQL>
Thanks Kartheek
My requirement is similar. I need to do some kind of IN operator functionality  . For the INPUT collection type , I need to pull out the records for the values that I got from the collection.
Example
select employees
from employees,
where emp_no in (select empno from table(get_emp_table(1,2,3))
Assuming 1,2,3 are the values that I got from the INPUT parameter of collection type.
Regards,
Achyut K