Passing Array of UDT or Collection as IN OUT using OracleDbType.InputOutput

Question

Hi gurus,
I received the following helpful and correct answer to this thread
Re: Error Passing UDT as Collections using OracleDbType.Object
However I'm now trying to modify it to be an OracleDbType.InputOutput as the correct answer modified my original code.
Using the above thread, could someone please let me know how to do this so I can pass a Collection in modifiy it in the Stored Procedure and get back the results. There are no samples I could see.
Rob
http://www.scnet.com.au

Answer 1

Hi,
I looked at the other thread, but I'm not quite clear I understand what you're doing if the solution as "bind as OracleDbType.Array instead of Object", although you didnt explicitely state what plsq type of object you've created that you're trying to pass. Is it Table of Object? You'd bind as Object for that.
Here's a complete example of IN OUT table of object. The CLUB and PERSON classes are generated via ODT, and the only change I made was to make m_person in Club.cs public instead of private , just for the sake of not having too add code, in order to keep the example simple.
Hope it helps,
Greg
drop type CLUB;
drop type PERSON;
create TYPE PERSON AS OBJECT (name varchar2(4000),age number);
create type CLUB as table of PERSON;
create or replace procedure AddLastName(v1 in out  club)
IS
BEGIN
  for i in 1 .. v1.count loop
    v1(i).name := v1(i).name|| ' Darling';
  end loop;
END;
show err;
using System;
using System.Data;
using Oracle.DataAccess.Client;
namespace inout_table_of_object {
    class Program
        static void Main(string[] args)
            PERSON[] arr_pers = new PERSON[2];
            arr_pers[0] = new PERSON();
            arr_pers[0].NAME = "Ian";
            arr_pers[0].AGE = 6;
            arr_pers[0].AGEIsNull = false;
            arr_pers[1] = new PERSON();
            arr_pers[1].NAME = "Melody";
            arr_pers[1].AGE = 8;
            arr_pers[1].AGEIsNull = false;
            CLUB club = new CLUB();
            club.m_PERSON = arr_pers;
            using (OracleConnection con = new OracleConnection("user id=scott;password=tiger;data source=orcl"))
                con.Open();
                using (OracleCommand cmd = new OracleCommand("SCOTT.ADDLASTNAME", con))
                    cmd.CommandType = CommandType.StoredProcedure;
                    using (OracleParameter p1 = new OracleParameter("", OracleDbType.Object, ParameterDirection.InputOutput))
                        p1.UdtTypeName = "SCOTT.CLUB";
                        p1.Value = club;
                        cmd.Parameters.Add(p1);
                        cmd.ExecuteNonQuery();
                        CLUB club2 = (CLUB)(p1.Value);
                        PERSON[] arr_pers2 = club2.Value;
                        foreach (PERSON person in arr_pers2)
                            Console.WriteLine(person.NAME + " " + person.AGE);
}OUTPUT
======
Ian Darling 6
Melody Darling 8
Press any key to continue . . .