Apex_util.set_session_state issue

Question

Hi
In order to try and workaround the issue reported in Translate substitutions I have been trying to set application item values using apex_util.set_session_state but this doesn't appear to be working.
The problem in the thread was that when the admin user changed the values of substitutions these are only changed in the primary application and not the seeded ones. I understand that we are perhaps using substitutions differently to other people and although this problem has been acknowledged by Oracle I thought there might be a relatively simple solution for us.
What I'd like to do is implement code similar to below as an application process:
BEGIN
  FOR i IN (SELECT * FROM apex_application_substitutions
            WHERE application_id = :APP_ID) LOOP
    apex_util.set_session_state(i.substitution_string||'1', i.substitution_value);
  END LOOP;
END;When running the seeded application the APP_ID is that of the primary application. So this code will pick up the values of the substitutions from the primary application and save these as values for similarly named application items in the current session, which we'd then refer to instead. This isn't ideal as we will need to re-write a lot of code, but at least it means we can translate our applications which we can't do at present.
However, the spplication item values are not set. I've done some investigation just looking at the primary application, so ignoring translation and seeded application completely. I've been working on APEX 4.0.2 but found that there was a reported bug, apex_util.set_session_state don't works after upgrade from 4.0.1 to 4.0.2 This may be relevant, but I'm unable to apply the patch. So I've investigated on apex.oracle.com which is APEX 4.1 and I have been able to reproduce the problem. Just incase it matters I've got no authentication or authorization on my application.
The problem can be seen here: http://apex.oracle.com/pls/apex/f?p=56303 The section of interest is the output not the form. Here I've output what I'm doing and the values of the application items after each step. The application items are called SUB_VALUE1 and 2ND_VALUE1 and my substitutions are called SUB_VALUE and 2ND_VALUE. At the end I set the application items to null, so they will always start null. The output is as follows:
(0) SUB_VALUE1 =
(0) 2ND_VALUE1 =
apex_util.set_session_state(i.substitution_string||'1', i.substitution_value);
(1) SUB_VALUE1 =
(1) 2ND_VALUE1 =
apex_util.set_session_state('SUB_VALUE1',i.substitution_value);
(2) SUB_VALUE1 =
(2) 2ND_VALUE1 =
:SUB_VALUE1 := i.substitution_value;
(3) SUB_VALUE1 = Primary App Value
(3) 2ND_VALUE1 =
apex_util.set_session_state('SUB_VALUE1','XYZ');
(4) SUB_VALUE1 = Primary App Value
(4) 2ND_VALUE1 =
apex_util.set_session_state(i.substitution_string||'1', i.substitution_value);
(1) SUB_VALUE1 = Primary App Value
(1) 2ND_VALUE1 =
apex_util.set_session_state('SUB_VALUE1',i.substitution_value);
(2) SUB_VALUE1 = Primary App Value
(2) 2ND_VALUE1 =
:2ND_VALUE1 := i.substitution_value;
(3) SUB_VALUE1 = Primary App Value
(3) 2ND_VALUE1 = Second value
apex_util.set_session_state('2ND_VALUE1','ABC');
(4) SUB_VALUE1 = Primary App Value
(4) 2ND_VALUE1 = Second valueYou can see that no values are set using apex_util.set_session_state, even explicitly stating the application item name and value (e.g. apex_util.set_session_state('2ND_VALUE1','ABC');) does not set or update the value.
This could be as simple as the patch hasn't been included in APEX 4.1 or maybe I am missing something obvious. Unfortunately I'm unable to test this in 4.0.1 or any other version, to see if it's just a problem in 4.0.2 and 4.1.
If someone could confirm if the patch has been included in 4.1 or if this is a new issue. Or perhaps point me to another post answering this (I couldn't find one) or just show me the error of my ways that would be brilliant.
Cheers
Sara

Answer 1

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