Blank drop-downs when using LOV with static VO

Hello, I am using JDeveloper 11.1.2.3.0
I have set some attributes to display as LOV. The attributes that are connected with Entity Based VO are fine but those that are connected with Static List VO not. In the second case I am getting drop-downs with blank values on it. Does anyone have any idea why does this happen?
PS: The application was working fine, but after I restarted JDev I got this error. Now I restarted it again and again but with no result.

Hi,
don't see how we can help unless you provide details steps for how you set up the static LOV.
Frank

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Cascading Select Statements - problem with blank drop-downs

Hello,
I have posted a number of questions about Cascading Select Statements in APEX and though I've received some good information, I still get a blank drop-down when I select the first LOV.
I also found "How to test an On-Demand Process used for AJAX" on the web. Here is the link to the web page:
http://www.inside-oracle-apex.com/2006/12/how-to-test-on-demand-process.html
When I try to test the ON-DEMAND Application Process in the Address Bar of my browser by typing the following, I get an error:
http://beta.biztech.net:2020/pls/apex/f?p=4000:0:211233229176642:APPLICATION_PROCESS=CASCADING_SELECT_LIST:::P6_PROJECT_ID:CASCADING_SELECTLIST_ITEM_1
The error I get is:
Unexpected error, unable to find item name at application or page level.
ERR-1002 Unable to find item ID for item "P6_PROJECT_ID" in application "4000".
As perhaps a last ditch effort, I will post all the steps, all the code and a link to my application.
Here is a link you can visit to view my application:
http://beta.biztech.net:2020/pls/apex/f?p=112:1
You can log in with the following ID and Password
ID: tsimkiss
PW: TS92
Here are the steps that I have followed and the code that I have used.
++++++++++++++++++++++++++++++++++++++++++++++++++
1. Create an application process in Shared Components
- On Demand CASCADING_SELECT_LIST - like this:
Process Point: On Demand
Name: CASCADING_SELECT_LIST
TYPE: PL/SQL Anonymous Block
BEGIN
OWA_UTIL.mime_header ('text/xml', FALSE);
HTP.p ('Cache-Control: no-cache');
HTP.p ('Pragma: no-cache');
OWA_UTIL.http_header_close;
HTP.prn ('<select>');
HTP.prn ('<option value="' || 1 || '">' || '- select tasks -' || '</option>');
FOR c IN (SELECT newops.task_name AS task_name,
newops.task_id AS task_id
FROM NEW_OPPORTUNITIES newops
UNION
SELECT DISTINCT pt.task_name AS task_name,
pt.task_id AS task_id
FROM pa_tasks@bizdev pt,
pa.pa_projects_all@bizdev prj
WHERE prj.project_id = pt.project_id
AND prj.project_id =
CASE
WHEN TO_NUMBER(:cascading_selectlist_item_1)=1
THEN prj.project_id
ELSE TO_NUMBER(:cascading_selectlist_item_1)
END)
LOOP
HTP.prn ('<option value="' || c.task_id || '">' || c.task_name || '</option>');
END LOOP;
HTP.prn ('</select>');
END;
2. Create an application item in Shared Components:
Name: CASCADING_SELECTLIST_ITEM_1
3. Create an LOV in Shared Components
- This is the Primary LOV (name it similar to it's select list page item):
List of Values Name: PROJECT_ID
Source: Lists of Values Query
SELECT newops.CLIENT AS project_name, newops.PROJECT_ID AS project_id FROM NEW_OPPORTUNITIES newops
UNION
SELECT ppa.NAME AS project_name, ppa.PROJECT_ID AS project_id FROM pa.pa_projects_all@bizdev ppa
WHERE ppa.project_status_code='APPROVED'
AND (ppa.COMPLETION_DATE IS NULL or ppa.completion_date > sysdate)
AND (ppa.CLOSED_DATE IS NULL or ppa.closed_date > sysdate)
ORDER BY project_name asc
4. Create a javascript and put it in the header of the page where cascading drop-downs are:
<script>
function get_select_list_xml(pThis,pSelect){
var l_Return = null;
var l_Select = html_GetElement(pSelect);
var get = new htmldb_Get(null,html_GetElement('pFlowId').value,
'APPLICATION_PROCESS=CASCADING_SELECT_LIST',0);
get.add('CASCADING_SELECTLIST_ITEM_1',pThis.value);
gReturn = get.get('XML');
if(gReturn && l_Select){
var l_Count = gReturn.getElementsByTagName("option").length;
l_Select.length = 0;
for(var i=0;i<l_Count;i++){
var l_Opt_Xml = gReturn.getElementsByTagName("option");
appendToSelect(l_Select, l_Opt_Xml.getAttribute('value'),
l_Opt_Xml.firstChild.nodeValue)
get = null;
function appendToSelect(pSelect, pValue, pContent) {
var l_Opt = document.createElement("option");
l_Opt.value = pValue;
if(document.all){
pSelect.options.add(l_Opt);
l_Opt.innerText = pContent;
}else{
l_Opt.appendChild(document.createTextNode(pContent));
pSelect.appendChild(l_Opt);
</script>
5. Create two Select List page items:
P6_PROJECT_ID <-- This is the primary drop-down
P6_TASK_ID <-- This is the secondary drop-down
6. In your primary select list, put the following into HTML Form Element Attributes:
HTML Form Element Attributes: onchange="get_select_list_xml(this,'P6_TASK_ID')"
Other settings on the page:
Name: P6_PROJECT_ID
Display As: Select List
Source Used: Always, replacing any existing values in session state
Source Type: Database Column
Source value or expression: PROJECT_ID
Named LOV: PROJECT_ID <--- Choose from drop-down (this is the Application LOV created earlier)
Null display values: - select project -
Display Null: Yes
7. The second select list is based on an LOV and depends on the value of the first select list:
Name: P6_TASK_ID
Display As: Select List
Source Used: Always, replacing any existing values in session state
Source Type: Database Column
Source value or expression: TASK_ID
Null display values: - select project -
Display Null: Yes
List of values definition:
SELECT newops.task_name AS task_name,
newops.task_id AS task_id
FROM NEW_OPPORTUNITIES newops
UNION
SELECT DISTINCT pt.task_name AS task_name,
pt.task_id AS task_id
FROM pa_tasks@bizdev pt,
pa.pa_projects_all@bizdev prj
WHERE prj.project_id=pt.project_id
AND prj.project_id=:P6_PROJECT_ID
ORDER BY task_name asc
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++
If you need an actual running copy of my application, I'm not sure I can upload to the Oracle APEX website since uses datalinks to some tables. If necessary, I will give you my login into if you email me directly, however.
If someone could just straighten my code out especially on the ON-DEMAND Application Process, I think that would really help me out.
Hope someone out there can help me.
Thanks
LEH

Sorry, looking at your code that testing URL is still incorrect. You should be passing name / value pairs in the last arguments, and your passing P6_PROJECT_ID as the name part and CASCADING_SELECTLIST_1 as the value part. In your application process you are using CASCADING_SELECTLIST_1 as the parent ID for the P6_TASK_ID dropdown, so it is this name / value pair that you'll need to test. So your URL should look something like this...
http://beta.biztech.net:2020/pls/apex/f?p=112:0:211233229176642:APPLICATION_PROCESS=CASCADING_SELECT_LIST:::CASCADING_SELECTLIST_ITEM_1:[some project id]
(Note: Where [some project id] should be an ID for a project in your database, that has tasks.)
And I'm with Dan here, I still can't access that link you provided. apex.oracle.com should be your next move if you can't resolve it, as you've got at least two people willing to go and have a look at your code.
Hope it helps,
Anthony.

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Blank drop-downs when using LOV with static VO

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