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Expand tree not working in Apex 19.2?

Hello
Before I waste some other hours someone might confirm this is a bug in Apex...
Aim: I want to re-open a tree to the state where it was before I do the page reload.
There is an attribute called 'Selected Node Page Item' in the Attributes area of the tree widget. The inline help is very foggy about how it works nor there is an example:
This item is used to save tree state, by holding the value of the last selected node. The value of the selected node can be saved to the selected item via the node link attribute, or via a page process. When the page is reloaded, the tree is opened to the selected node value.
Exactly what I need, perfect! The big question here: What is meant by "value"? ID of the selected element in the tree, object, JQuery object, ... ? Only heaven knows...
So I create a hidden page item called P25_TREE_SELECT that will be filled with the 'value' to expand after page reload. Furthermore I set Selected Node Page Item to P25_TREE_SELECT.
I create a test button doing this in several Dynamic Actions:
-- Step 1: Set value to P25_TREE_SELECT
// Get tree
var tree = $( "#HIERARCHYTREE_tree" );
// Get adatapter data
var adapter = tree.treeView( "getNodeAdapter" );
// Get node of selection
var treeSelected = tree.treeView( "getSelectedNodes" );
// Option 1: Set selection as object
apex.item('P25_TREE_SELECT').setValue( treeSelected[0] );
// Option 2: Set ID of selected element in tree
apex.item("P25_TREE_SELECT").setValue( treeSelected[0].id );

-- Step 2: Make sure P25_TREE_SELECT is in session before page reload
BEGIN
APEX_UTIL.SET_SESSION_STATE('P25_TREE_SELECT', :P25_TREE_SELECT);
END;

-- Step 3: Page reload
location.reload();

After page reload the tree keeps closed, no matter I choose Option 1 or Option 2.
Anything else I have to send as "value" or did I miss anything? Any documentation or video showing how it should work (if it does)?
Regards

Comments

Billy Verreynne

Horrible. All of it.

Using an outdated Web Toolkit API.

Not using bind variables, leaving open a giant security hole.

And using the same magnificent reasoning that made your code so horrible, and applied it to posting a PL/SQL question in a forum that EXPLICITLY states No Product Questions.

BluShadow

*** Moderator Note: Question now moved to the SQL and PL/SQL space.  As Billy indicates, the "Community Feedback (No Product Questions)" space clearly states that you should not post product questions in there, and it is for feedback relating to the Developer Community.  Please ensure you choose the correct product related space for your questions in future.

padders
Answer

You can use owa_util.bind_variables to open a cursor for a query string with multiple binds and pass the resulting cursor to owa_util.listprint, but beware of implicit conversions, e.g.

DECLARE
  PROCEDURE init_owa
  IS
      l_names owa.vc_arr;
      l_values owa.vc_arr;
  BEGIN
      l_names (1) := 'DUMMY_NAME';
      l_values (1) := 'DUMMY_VALUE';
      owa.init_cgi_env (
        num_params => l_names.COUNT,
        param_name => l_names,
        param_val => l_values);
  END init_owa;
  PROCEDURE dump_owa
  IS
      l_page htp.htbuf_arr;
      l_rows INTEGER := 99999999;
  BEGIN
      owa.get_page (
        thepage => l_page,
        irows => l_rows);
      FOR i IN 1 .. l_rows LOOP
        dbms_output.put_line (l_page (i));
      END LOOP;
  END dump_owa;
BEGIN
  init_owa;
  DECLARE
      p_deptno dept.deptno%TYPE := 10;
  BEGIN
      owa_util.listprint (
        p_thecursor =>
            owa_util.bind_variables (
              thequery =>
                  q'{SELECT DISTINCT job, job || ' - ' || INITCAP (job), NULL }' ||
                  q'{FROM emp WHERE deptno = TO_NUMBER (:b_deptno)}',
              bv1name => 'b_deptno',
              bv1value => TO_CHAR (p_deptno)),
        p_cname => 'p_cname',
        p_nsize => 99,
        p_multiple => TRUE);
  END;
  dump_owa;
END;
/
Marked as Answer by NewApexCoder · Sep 27 2020
NewApexCoder

LOL well thanks for that. Actual feedback on the issue would have been nice..But I guess thats constructive criticism....or just being a d!ck...idk...especially that early in the morning too...amazing.

-- Doing the best with what I've got

-- You really could have just suggested  using owa_util.bind_variables as @padders suggested.

-- Yea I figured it was the wrong area to post in. I did search around for the correct spot but the site is a little tough to navigate ( I don't spend my entire day on here )

But thanks for that..It did make me laugh

NewApexCoder

Sorry about that

NewApexCoder

Thanks for the help. I'll take a look and dissect. This should work, especially utilizing ow_util.bind_variables function.

Thanks a lot

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Post Details

Added on Nov 25 2020
#apex, #apex-discussions, #tree
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