Using AUTHID = CURRENT_USER and Apex

Question

I'm new to Apex and am just assessing if we can make use of it, mainly for reporting functionality in our existing web based application.
We have a schema that holds all of our procedures, packages, functions etc and they all have AUTHID = CURRENT_USER so each user can have their own set of tables in their own schema.
I want to be able to create reports in Apex that will then report on the users table in their own schema but I can't quite work out how Apex actually works. Can I tell something in Apex to use AUTHID = CURRENT_USER?
We used Webdb many years ago and that created the runtime package for all the forms and reports but I can't see anything that Apex creates so I assume it stores all the code in a table somewhere?
Thanks
Robert

Answer 1

Hi Scott,
does that mean, there is no way to make these packages work? Not even with additional direct grants to apex_public_user? I am aware of the implications but we have a significant amount of code using packages with authid current user.
Our situation:
We have four oracle schemas involved in a multi tenant application.
GLB : Global objects
BEE: tenant 1
SIX: tenant 2
IAM: tenant 3
Then we have the user APEX_SCM. There we store the tables and objects for the APEX application. This is the parsing schema for the application.
During page rendering we try change the CURRENT_SCHEMA to one of the tenants:
declare
  l_sql varchar2(2000);
begin
  if :P42_BRAND is null then
    :P42_BRAND := 'SIX';
  end if;
  l_sql := 'alter session set current_schema=' ||:P42_BRAND;
  apex_application.debug(l_sql);
  execute immediate l_sql;
end;Then we call a stored function returning the report result:
select *
from table(six.inv_val_report_pack.fn_rpt_ar_nlf(to_number(:P42_BL_INV_CHECK_ID))) t,
  apex_scm.st_sor_v s, six.ls, ar
where s.st_sor_id(+) = t.st_sor_id
and ls.ls_id(+) = t.ls_id
and ar.ar_id(+) = t.ar_idThe function is in a package with invoker rights:
create or replace package inv_val_report_pack
authid current_user
is
...Now my questions:
1) Is there a way to make this work (using invoker rights packages)?
2) We cannot get the name resolution to work. Does execute immediate 'alter session set current schema=SIX' work at all? It seems to be ignored.
I ran a test in the sql workshop as the parsing schema APEX_SCM.
declare
l number;
begin
  execute immediate 'alter session set current_schema=SIX';
  select null into l from ls
  where rownum=1 ;
end;
/It only worked after I created a local synoynm for ls in the schema APEX_SCM. Weird, it seems like 'alter session set current schema=SIX' is just plain ignored.
Any help would be greatly appreciated, by anyone ;).
Thanks,
~Dietmar.