How to create an Apex 3.1 a session context programmatically?

Question

Hi
I want to do some unit testing on some pl/sql procedures that use apex collections. As I am using PL/SQL Developer and I am not connected to the database via Apex, inevitably they fail with the error "invalid parsing schema for the current workspace ID".
How can I create programmatically a session in Apex so I can unit test my code? I am sure I have seen code to do it, but cannot find it anywhere.
Thanks
Luis

Answer 1

Scott
Thanks for the help!
You say "uncomment the last line if you need to". How do I know if I need to? If the connected user is different from the application parsing schema?
In any case, the connect user is the same as the app parsing schema, and when I ran it without uncommenting that last line I got the error:
ORA-20104: create_collection_from_query_b Error:ORA-20001: Invalid parsing schema for current workspace ID
ORA-06512: at "FLOWS_030100.WWV_FLOW_COLLECTION", line 1223
Then I uncommented it (I granted execute to the package beforehand) but got the same error.
As I said, I am connected as the same database user as the application parsing schema, and the application does not require authentication. Where did it go wrong?
Please see below the code I am using.
Thanks
Luis
declare
  l_workspace_id   number;
  l_application_id number;
  l_user           varchar2(30);
  l_owner          varchar2(30);
  l_cgivar_name    owa.vc_arr;
  l_cgivar_val     owa.vc_arr;
BEGIN
  htp.init;
  l_cgivar_name(1) := 'REQUEST_PROTOCOL';
  l_cgivar_val(1) := 'HTTP';
  owa.init_cgi_env(num_params => 1, param_name => l_cgivar_name, param_val => l_cgivar_val);
  l_user           := 'ADMIN'; -- authenticated username
  l_application_id := 999; -- application ID
  l_owner          := 'PS'; -- application owner (parsing schema)
  for c1 in (select workspace_id
             from   apex_applications
             where  application_id = l_application_id)
  loop
    l_workspace_id := c1.workspace_id;
    dbms_output.put_line('l_workspace_id:' || l_workspace_id);
  end loop;
  wwv_flow_api.set_security_group_id(l_workspace_id);
  apex_application.g_instance     := 1;
  apex_application.g_flow_id      := l_application_id;
  apex_application.g_flow_step_id := 1;
  wwv_flow_custom_auth_std.post_login(p_uname      => l_user,
                                      p_session_id => null,
                                      p_flow_page  => apex_application.g_flow_id || ':' || 1);
  flows_030100.wwv_flow_security.g_parse_as_schema := l_owner;
  -- Call the procedure
  my_pkg.my_proc;    --- ERROR HERE
end;