Dynamic LOV without Submit

I have an LOV which is used by a pop-up item and depending on the value of an item, p_userchoice, returns a specific select which the pop-up then uses to generate a nice pop-up list for the user.
I also have a dropdown (with Submit) that sets the value of the above-mentioned item, p_userchoice.
This works fine. However, ....
I want to make the dropdown a NON-submitting dropdown. I just don't like submits when not absolutely required.
I have tried many things here ...
1) setting a page item value in javascript which I then try to interrogate in the LOV (doesn't work because correct value is not visible unless page was submitted)
2) setting an application item in javascript ... (inconclusive) ...
Contemplated :
1) using set_session_state ... (don't know how w/out a submitting action)
2) smokin' crack ...
Grateful for helpful suggestions. TIA, Ken.

Ken,
I often have trouble thinking in the abstract - do you have a concrete example of what you want to achieve. It sounds like you're looking for a clairvoyant option ;-) Do you have an application on htmldb.oracle.com that I can run to get a feel for what you want?
As you know, we're talking html here. The server only knows about changes on the screen when the page is submitted - therefore, you have to submit if you want to change the session state. The alternative is to do things in javascript so you'll need to find a javascript event you can hang your code on (and I'm not a javascript coder by anyone's definition, so it's over to someone else for this part) but, still, the LOV is a 'server side' beast.
Maybe you can achieve what you want by making the select list one without a submit and adding a 'Go' button beside it so that the user has the option - make his/her choice then submit when he/she is ready.
Hope this makes sense.
Cheers,
Bryan.

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Hi,
If you want to submit an InfoPath form to different locations dynamically, there is no OOB approach without code, since submit option needs static URL value.
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Please remember to mark the replies as answers if they help, and unmark the answers if they provide no help. If you have feedback for TechNet Support, contact
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Problem with dynamic LOV and function

Hello all!
I'm having a problem with a dynamic lov in APEX 3.0.1.00.08. Hope you can help me!
I have Report and Form application. On the Form page i have a Page Item (Popup Key LOV (Displays description, returns key value)).
When i submit the sql code in the 'List of vaules defention' box. I get the following message;
1 error has occurred
LOV query is invalid, a display and a return value are needed, the column names need to be different. If your query contains an in-line query, the first FROM clause in the SQL statement must not belong to the in-line query.
When i excecute the code below in TOAD or in the SQL Workshop it returns the values i want to see. But somehow APEX doesn't like the sql....
SELECT REC_OMSCHRIJVING d, REC_DNS_ID r FROM
TABLE(CAST(return_dns_lov_fn(:P2_DNS_ID) AS dns_table_type)) order by 1
returns_dns_lov_fn is a function, code is below;
CREATE OR REPLACE FUNCTION DRSSYS.return_dns_lov_fn (p2_dns_id number)
RETURN dns_table_type
AS
v_data dns_table_type := dns_table_type ();
BEGIN
IF p2_dns_id = 2
THEN
FOR c IN (SELECT dns_id dns, omschrijving oms
FROM d_status dst
WHERE dst.dns_id IN (8, 10))
LOOP
v_data.EXTEND;
v_data (v_data.COUNT) := dns_rectype (c.dns, c.oms);
END LOOP;
RETURN v_data;
END IF;
END;
and the types;
CREATE OR REPLACE TYPE DRSSYS.dns_rectype AS OBJECT (rec_dns_id NUMBER, rec_omschrijving VARCHAR2(255));
CREATE OR REPLACE TYPE DRSSYS.dns_table_type AS TABLE OF dns_rectype;
I tried some things i found on this forum, but they didn't work as well;
SELECT REC_OMSCHRIJVING display_value, REC_DNS_ID result_display FROM
TABLE(CAST(return_dns_lov_fn(:P2_DNS_ID) AS dns_table_type)) order by 1
SELECT REC_OMSCHRIJVING display_value d, REC_DNS_ID result_display r FROM
TABLE(CAST(return_dns_lov_fn(:P2_DNS_ID) AS dns_table_type)) order by 1
SELECT a.REC_OMSCHRIJVING display_value, a.REC_DNS_ID result_display FROM
TABLE(CAST(return_dns_lov_fn(:P2_DNS_ID) AS dns_table_type)) a order by 1
Edited by: rajan.arkenbout on 8-mei-2009 14:41
Edited by: rajan.arkenbout on 8-mei-2009 14:51

I just had the same problem when I used a function in a where clause.
I have a function that checks if the current user has acces or not (returning varchar 'Y' or 'N').
In where clause I have this:
where myFunction(:user, somePK) = 'Y'
It seems that when APEX checked if my query was valid, my function triggered and exception.
As Varad pointed out, check for exception that could be triggered by a null 'p2_dns_id'
Hope that helped you out.
Max

Creating a dynamic lov based on a column

Hi,
I want to create a dynamic lov based on a column in a database-table.
Eg. the query
'select code, description from code_table'
is the contents of the column 'lov_query' in the table 'parameters'.
For every parameter there can be a different lov-query, but the result is always
two columns (code and description, number and name, etc.), exactly what you need to use in a lov.
I've written a (dbms_sql) function that takes the parameter-id and returns the lov_query.
create or replace function "GET_PMR_LOV"
(pmr_id in NUMBER)
return VARCHAR2
is
cur INTEGER := DBMS_SQL.OPEN_CURSOR;
fdbk INTEGER;
l_pmr_id NUMBER(9) := pmr_id;
l_stmnt VARCHAR2(2000);
begin
DBMS_SQL.PARSE
(cur, 'select pmr.lov_query from parameters pmr where pmr.ID ' || ' = 'L_PMR_ID', DBMS_SQL.NATIVE);
DBMS_SQL.BIND_VARIABLE (cur, 'L_PMR_ID', l_pmr_id);
DBMS_SQL.DEFINE_COLUMN (cur, 1, l_stmnt, 2000);
fdbk := DBMS_SQL.EXECUTE (cur);
fdbk := DBMS_SQL.FETCH_ROWS (cur);
IF fdbk > 0
THEN
DBMS_SQL.COLUMN_VALUE (cur, 1, l_stmnt);
return (l_stmnt);
ELSE
return null;
END IF;
DBMS_SQL.CLOSE_CURSOR (cur);
END;
But now I'm stuck on how to pass on this statement in HTMLDB
as an dynamic lov, I don't seem to be able to execute this statement
into the two display and return columns. Any ideas?

Hello again,
This lov is on an updatable report-column where the user has to make a choice from an non-named, popup and query-based lov. In the lov-query box I have just put:
"return get_pmr_lov(:p41_param_id)" (without the quotes ;-)
Here's my latest version plus an alternative, which both seem to work fine:
create or replace function "GET_PMR_LOV"
(pmr_id in NUMBER)
return VARCHAR2
is
cur INTEGER := DBMS_SQL.OPEN_CURSOR;
fdbk INTEGER;
l_pmr_id NUMBER(9) := pmr_id;
l_stmnt VARCHAR2(1000);
begin
DBMS_SQL.PARSE (cur, 'select pmr.lov_query from paramaters pmr where pmr.ID ' || '= :L_PMR_ID', DBMS_SQL.NATIVE);
DBMS_SQL.BIND_VARIABLE (cur, 'L_PMR_ID', l_pmr_id);
DBMS_SQL.DEFINE_COLUMN (cur, 1, l_stmnt, 1000);
fdbk := DBMS_SQL.EXECUTE (cur);
fdbk := DBMS_SQL.FETCH_ROWS (cur);
IF fdbk > 0 THEN
DBMS_SQL.COLUMN_VALUE (cur, 1, l_stmnt);
return (l_stmnt);
ELSE
return null;
END IF;
DBMS_SQL.CLOSE_CURSOR (cur);
END;
create or replace function "GET_PMR_LOV2"
(pmr_id in NUMBER)
return VARCHAR2
is
l_pmr_id NUMBER(9) := pmr_id;
l_stmnt VARCHAR2(1000);
BEGIN
EXECUTE IMMEDIATE 'select pmr.lov_query from parameters pmr where pmr.ID = :1'
INTO l_stmnt USING l_pmr_id;
return l_stmnt;
END;
The error-message remains the same, unable to bind :p41_param_id !

Dynamic LOV refresh problems

I have a project site LOV that is set up to only show the sites relating to a particular client. The client is a dynamic LOV as well. Once the Client has been selected and the page/region refreshes the sites LOV should have the possible choices for the client showing. The code is fine as it has worked and I have got it working again but I had to change a lot of settings in the item linked to the LOV. I have a couple duplicate development apps that both work but the settings in the items are different. My question is what is the correct setting?
Sorry if the post seems confusing.
cheers
Ian

Hello
If I understand your problem well, you are using a form based on a database table. The way it works is this: everytime the page is displayed, the database values corresponding to the record being displayed are fetched from the database (this is the setting "always - replacing any value in the session state"). This is correct as you want the page to display the most up-to-date information from the DB.
Hence, when you submit the page in order to refresh the second LOV, that rule applies and you lose the value you just changed in the client field and things get messed up.
Do you have this problem creating a new record or updating an existing one? I think this could work if you are creating a new record, as there is no DB values to overwrite the local values, but I am not sure if this can work if you are updating a record.
Usually people use a "ajax" LOV refresh so the page does not need to be submitted.
I hope this makes sense...
Luis

Return statment for dynamic LOV - exception handling

Hello All,
Good Morning.
Oracle 11g, apex 3.2.1
I am having an dynamic LOV with a return statement.
code :-
==========================
declare
owner varchar2(12) :='';
stmt varchar2(4000) :='';
No_Records_Exception exception ;
phase varchar2(30);
year varchar2(30);
month_quarter varchar2(30);
begin
stmt :='select distinct famid d, famid r from '
||:P1_SCHEMA||'.'||'FMLY';
return stmt;
exception
when No_Records_Exception then
raise_application_error (-20998 , ' Schema does not exist ' );
when OTHERS then
raise_application_error (-20999,' Select the schema first ' );
end;
===================
My question is - why the exception is not handled when there are no table found.
Am getting the following errr ..
Error: ORA-06550: line 1, column 120: PL/SQL: ORA-00903: invalid table name ORA-06550: line 1, column 7: PL/SQL: SQL Statement ignored performing List of Values query: "select distinct famid d, famid r from .FMLY".
Pls let me know how to handle this error.. if the table is invalid.
scenario for poping this error:-
==================
I am having three "select list with redirect" items and one radio group ( having two Radion buttons - Relation , Famid )
The requirement is when the user selects Famid radio then the lov is suppose to populate the multiselect list with famid values from table P2D2008M05.FMLY and the schema P2D2008M05 is selected from three list items
P2D, 2008 , M05 one from each item .
If the schema is not selected and the user selects radio famid , then the error is coming , I need to put a validation or error handling mechanism when in which ,if the user selects famid radio and the schema is not selected , I need to raise an exception with proper error message to the user saying that the schema is not selected.
Pls helpin this regard.
Thanks/kumar.

Hi,
Your exception is for function that return select.
Error is raised when Apex procedures try use select your function returns.
You need test your select inside function or create validations
Your function could look something like this
DECLARE
stmt    VARCHAR2(4000);
l_count NUMBER;
BEGIN
IF NVL(:P1_SCHEMA,'%'||'null%') = '%'||'null%' THEN
    raise_application_error (-20999,' Select the schema first ' );
END IF;
SELECT COUNT(1) INTO l_count FROM all_users WHERE username = :P1_SCHEMA ;
IF l_count = 0 THEN
    raise_application_error (-20998 , ' Schema does not exist ' );
END IF;
stmt :='select distinct famid d, famid r from ' ||:P1_SCHEMA ||'.' ||'FMLY';
RETURN stmt;
END;That is just example, I did not test it. And I think it is not good idea raise errors inside LOV function.
You should use Apex after submit validations
Br,Jari

Dynamic LOV on form in update mode

I have a link to a portal form that specifies the primary key as below:
Portal30.wwv_user_utilities.get_url(
'application.form_link',
'primary_id',to_char(id),
'_primary_id_cond','=');
This works well. I can access the form in update mode for the specified row. However, on the form I have 2 combo boxes: one is for make of vehicle and the other for model. The make combo box uses an lov derived from a simple table query. The model combo box is a dynamic lov using a query based upon the value of the model. When entering the form in update mode, it fails to set the make bind variable to anything, so the model is left blank with no options. How can I set the value of the make bind variable on the link so I can get the dynamic lov for the model to be populated correctly?
(I have already tried to add the model to the url link, to no avail).
null

Hi noor,
When I click the link button I am opening the userdefined form and filling the corresponding document number details manually.
Do you mean, you're filling the form, field by field???
If so you're doing it wrong. That way the form has no connection to the correct Database record and cannot update it.
The correct way is as follows:
Put a DocEntry field in your form and bind it to the DocEntry database field.
Set this field to NOT Visible by default.
When a user clicks the LinkButton, you change the form mode to FindMode, make the DocEntry field visible use the oForm.Items.Item("DocEntry").Specific.Value = "" method to set the correct value to the field (use the DocEntry number NOT the DocNum) and use the oForm.Items.Item("1").Click() to open the correct record.
Then the user can change the value it needs without errors.
Best Regards,
Vítor Vieira

Return multiple values from dynamic lov in apex 3.2.1

Hi
I need to create a dynamic lov that displays multiple values from a table and RETURNS multiple values into display only fields in a form page to be saved to the database
For example
dynamic list of value name SERVER
select name || ',' || life_cycle d, name r
from sserver
order by 1
This SERVER LOV is attached to the P4_SSERVER_NAME field in the form.
However this only returns sserver. name into the P4_SSERVER_NAME field in the form. I would need to capture the life_cycle field as well and populate the P4_LIFE_CYCLE field in the form as well. How does one do this?
I have searched this forum however could not find a thread that fit my situation. i saw that in 4.2 there is dynamic action however unable to upgrade at this moment.
any suggestions are greatly appreciated.
thank you

Hi CRL,
One method is to set the value of your P4_LIFE_CYCLE item via APEX_UTIL.set_session_state
To do this you need to create a Page Process
Type PL/SQL anonymous block
Process Point On Load - Before Header
The source for the Process might look like this: DECLARE
   l_life_cycle   VARCHAR2 (50);
BEGIN
   SELECT life_cycle
     INTO l_life_cycle
     FROM sserver
    WHERE :p4_sserver_name = sserver.name;
   APEX_UTIL.set_session_state ('P4_LIFE_CYCLE', l_life_cycle);
END;Jeff

Dynamic LOV based on Current user

How do i make a dynamic LOV based on the user id of the current user.
Also how to insert values from a form into a database
Can anyone please help me out.
Thanks

Use portal.wwctx_api.get_user to get the currently logged in userid.
The simplest example of a form manipulating data is to create the form based on a table. All DML works automagically. You can base your form on a procedure with dummy columns and do your own DML if you wish. Lots more flexibility that way...

How to make use of a static or dynamic LOV in Desktop Instelligence reports

I want to use static LOV as well as dynamic LOV as a prompt for one of my report.
I have created a dynamic LOV but I dont know how to include it as a prompt to my reports. Please teach me the same.
For example I have two classes called COMPANY and EMPLOYEE in my universe. Each entry in the company class will have n number of employees in the employee class. My requirement is when I run the report it should prompt the user to select the company name which is a object in the COMPANY class. Based on the users's input the report should pull the employee data.
For this I have to create a COMPANY name LOV and this should be used in the 'Conditions' section of the Desktop Intellegence.
Please guide me for the same.

Hi,
LEt me know where u need the prompt object to be created in UNV or in report level.
In Unv:
Select Company name object-> double click it and in Select clause define as below
@variable('1. Enter Company Name'')
In Report level: Go to Query panel select Company class object in where clause and select required operator as LIKE OR IN LIST OR NOT IN LIST OR DIFFERENT FROM and select prompt and give some prompt message.
Cheers,
Suresh Aluri.

Dynamic lovs in parameter forms ... Is this possible?

Hi
I am using report developer 10g on windows xp.
I need a cascading prompt style dynamic LOVs in my report parameter form.
The first LOV displays a set of values (say for eg. dept list). The second LOV will display another list, based on the value chosen by the user in the first LOV (Eg. List of employee names in that dept).
My first LOV select statement may look like below for the user parameter say P_DEPT
select deptno from dept;
My sencod LOV select stmnt may look like below for the user parameter P_EMP
select ename from emp where deptno = :P_DEPT
Each time I try to set the second LOV, report developer complains "Bind variables not allowed in select statement"
Same error msg comes if I reference the first user parameter(P_DEPT) as a lexical parmaeter.
How do I acheive the above in report parameter form? Any help is appreciated greatly...
Thanks
Suma
Message was edited by: suma
user519129

Hi Brad,
Thanks for the reply. I had almost given up hope on receiving replies to this message.
I do agree that it is simpler (and a lot striaght forward) to just use forms to develop dynamic LOVs of cascading prompt style, that is required in my app. But in our shop, we have integrated forms and reports in such a way, that all the report parameters are handled by report developer's own parameter form, rather than coding a separate logic on the forms side to handle the report parameters(as this has to be done on the forms side for every report that we generate, We thought it would be better to use the reports developer to handle the parameter input and then pass the .rdf to forms app). Currently in all our app, the parameter form generated by the report developer is rendered as HTML form on the browser (when the concerned rdf file is called within the forms app) and by submitting this we get the report output)
Hence I am very keen to get this done somehow on the report developer side.
I do hope I get some input on this. Also, its a little surprising that such a simple feature is not readily avalibale in the report parameter form. I hope oracle report developer team is reading this message...:)
Thanks
Suma

Dynamic LOV in report based on universe

Hi experts,
I have found the following thread and I understand that I can change the registry to have dynamic LOV for BOXI R2:
http://scn.sap.com/thread/1524666
Is it possible for BI4.1?
Also is it possible for CR4E with .unx source?
Regards,
Gordon

OK. The Path for 4.0 would be:
32-bit machine:
HKEY_LOCAL_MACHINE\SOFTWARE\SAP BusinessObjects\Suite XI 4.1\Crystal Reports\Database
64-bit machine:
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\SAP BusinessObjects\Suite XI 4.1\Crystal Reports\Database
And then create the string key per the suggestion in that thread.
-Abhilash

Item Selection on a dynamic LOV (SQL Query)

Hi,
I've a dynamic LOV with an SQL query who return a list of data (one column). When i select a data in this LOV to be use as an item (sql query) in the same page the data is always null. In debug mode substitution string is null.
FYI : when the data is selected, a button is clik to perform an sql query for a report in another page.
Thanks. Sorry Abasolute beginner
Message was edited by:
user581765

Thanks for Your help.
The date is in fact a CHAR display (not really a date) so that is not the error.
For your information when i select a row in the list (format char YYYYMMDD_HHMM) it seems that Apex do not catch my select in the Session state.
I've change the item name with P2_DATE_FLOW but the problem remain.
This is the debug log if can help
0.03: Application 114, Authentication: CUSTOM2, Page Template: 3644802034190382
0.06: ...Session ID 1868105032215374 can be used
0.06: ...Application session: 1868105032215374, user=Neop
0.06: ...Determine if user "Neop" workspace "2859608277950243" can develop application "114" in workspace "2859608277950243"
0.06: Session: Fetch session header information
0.06: ...Metadata: Fetch page attributes for application 114, page 3
0.06: Fetch session state from database
0.06: Branch point: BEFORE_HEADER
0.06: Fetch application meta data
0.08: Computation point: BEFORE_HEADER
0.08: Processing point: BEFORE_HEADER
0.08: Show page template header
0.08: Computation point: AFTER_HEADER
0.08: Processing point: AFTER_HEADER
0.08: Computation point: BEFORE_BOX_BODY
0.08: Processing point: BEFORE_BOX_BODY
0.08: Region: Report 1
Report 1
0.08: show report
0.09: determine column headings
0.09: parse query as: CFM_MDRE
0.12: binding: ":P2_DATE_FLOW"="P2_DATE_FLOW" value="0"
0.14: print column headings
0.14: rows loop: 15 row(s)
No data found.

Dynamic LOV in a Tabular Form

Can somebody please tell me if there is a easy way to code a
dynamic LOV in a Tabular Form?
I need the ability to access a column value in the table row, to use in the WHERE clause of LOV query for another column in the row? Seems
like that should be easy , but not finding an answer.
Thanks for any help.
Carol

Hi Carol,
You can add the select list's definition directly into your SQL statement using APEX_ITEM.SELECT_LIST_FROM_QUERY - see: [http://download.oracle.com/docs/cd/E10513_01/doc/apirefs.310/e12855/apex_item.htm#CHDIDGDA]
If you first run your page with your existing select list on it, then do a View Source and look for the select list, you will see a "name" attribute of something like "f01" or "f02" etc. Make a note of the number part of this.
Then update your SQL statement to include the above and using the number you noted as the Index value (say, 4):
SELECT EMPNO,
ENAME,
DEPTNO,
APEX_ITEM.SELECT_LIST_FROM_QUERY(4,MGR,'SELECT ENAME d, EMPNO r FROM EMP WHERE DEPTNO = ' || DEPTNO || ' AND EMPNO <> ' || EMPNO) MGR
FROM EMPThat would give you a select list of employees in the same department as the current employee (excluding that employee themself)
Andy

Is a dynamic codebase without JnlpDownloadServlet possible?

Is it possible to have a dynamic codebase without deploying a servlet?
Seems reasonable to me. The cache should always know where the original source for the jnlp file ....
<jnlp spec="1.0+" codebase="codebase of original source this file" >
</jnlp>
I am attempting to minimize server side code and was thinking this was possible because of this statement made here : https://jdk6.dev.java.net/testProperty.html
"In 6u10-b13, we introduce new Java system properties to support the usage of version download and Pack200 without any server side requirements."
It seems to me that without some mechanism for dynamic codebase the new properties jnlp.packEnabled and jnlp.versionEnabled are kind of pointless since server side code will still be required in most situations. Statically coding the codebase attribute for every deployment is not a viable solution for me.

Thanks for responding Andy.
I was thinking that if the run-options of javaws would support the -codebase option (as with the import option), and the browser were to launch with that flag, then it could override the codebase in the jnlp file. Maybe too many moving parts there? ........
I've been working with the -import and -codebase options in attempt to minimize the server side servlet requirement.
Basically my thought is :
Have the jnlp file on server with no codebase attribute.
Use a signed applet to bring the jnlp file down from the server and write it to local disk (somewhere temporary) adding the codebase attribute along the way. Then launch the javaws with -codebase and -import flags to install the application.
So far it seems to be working but it's been a bit of a struggle. Viewing the cached jnlp file I see that it has the codebase attribute correct and the application does launch.
I am wondering if I update the jnlp file on the server, will the codebase in the cached file still be used? or will I need to force another -import?

Dynamic LOV without Submit

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