Cascading LOVs losing default values

All,
I am using APEX 4.0 and my questions is in regards to the behavior of cascading LOVs.
Users are barking.
Consider the following simple example...
LOV1 (States)
ALL (default)
ALABAMA
ALASKA
LOV2 (Cities)
ALL (default)
ANCHORAGE
ALBANY
AUSTIN
LOV2 is dependant on LOV1. When I make a change of any kind to LOV1, LOV2 loses it's default value.
This occurs even if LOV1 and LOV2 selections are valid (in the event of TEXAS, HOUSTON or ALL, HOUSTON)
Would I need to create a dynamic action to re-populate (or re-validate) LOV2??
Thanks!
Monty

Hi Monty,
APEX doesn't really know that LOV2 includes the same value also the a different parent value has been selected in LOV1.
But as you already mentioned, you can use a dynamic action with an "After Refresh" event for the LOV2 and use a "Set Value" action to set the LOV2 to its original value.
Regards
Patrick
My Blog: http://www.inside-oracle-apex.com
APEX 4.0 Plug-Ins: http://apex.oracle.com/plugins
Twitter: http://www.twitter.com/patrickwolf

Similar Messages

Cascading LOV - Keep Existing Value

Need to stop Cascading LOV to reset the values and keep existing selected options IF VALID
please have a look at the scenario
Col-1     Col-2     Col-3
A     AA     1
A     BB     2
A     CC     3
B     AA     1
B     AAB     2
B     AAV     3When Col-1 value is A the LOV of Col-2 has values AA BB CC and Col-3 has 1 2 3
and if Col-2 value is B the LOV of Col-2 has values AA AAB AAV and Col-3 has 1 2 3
What is happening :
» when user changes Col-1 from A to B Col-2 & Col-3 resets the user selected value (I think the default behavior)
what is needed if user has selected "3" in Col-3 and changes Col-1 from A to B Col-2 & Col-3 should have user selected values IF VALID

Yes, just to show it works. In your case, the second dynamic action has to be something like this:
DECLARE
   v_empno   NUMBER;
BEGIN
   SELECT empno
     INTO v_empno
     FROM emp
    WHERE deptno = :p292_deptno AND empno = :p292_empno;
   RETURN v_empno;
EXCEPTION
   WHEN OTHERS
   THEN
      RETURN v_empno;
END;since it needs to check if the value is in the range of alowed values. In my example I created a fake second entry which has the same ID and there it is enough to do RETURN item value session state.
Denes Kubicek
http://deneskubicek.blogspot.com/
http://www.apress.com/9781430235125
http://apex.oracle.com/pls/apex/f?p=31517:1
http://www.amazon.de/Oracle-APEX-XE-Praxis/dp/3826655494
-------------------------------------------------------------------

SSRS Cascading Parameter Setting Default Value of Parameter by Expression

Hi All,
I need some help on an issue I am running into in SQL server 2008 report parameters. I have the following Report Parameters defined:
1) @PredefinedDateSelection - Boolean (User Selectable True/False, Default Value - 'False')
2) @StartDate - Text (User input text box)
If @PredefinedDateSelection = TRUE, then I would like to provide a particular default value to the StartDate textbox (i.e. @StartDate Default Value), If @PredefinedDateSelection = FALSE, then I would like to provide a different default value.
I have the following code for the Expression for the Default value of @StartDate: =code.GetStartDate(Parameters!PreDefinedTimeSelection.Value)
where GetStartDate is a very simple VB function defined as :
Public Function GetStartDate(x as boolean ) As String
Dim a as string
Dim b as string
a = "Report Uses Predefined Values"
b = "Please Input Value"
If (x) then
Return a
else
Return b
end if
end function.
Now the default value of @StartDate stays set as "Please Input Value", and does not change when I toggle @PredefinedDateSelection from False to True and vice versa. I was expecting to see the Default value to change between the two messages depending on my selection in the report preview.
Another parameter which is a dropdown and uses a dataset to display two different set of selectable items depending on the value of @PredefinedDateSelection is working just fine. I am not sure if I am missing something or I am doing something wrong.
Instead of using the VB code I also tried : =iif(Parameters!PreDefinedTimeSelection.Value = True,"Report Uses Predefined Values","Please Input Value")
I also tried changing the default value using a dataset with SQL query and the available value set to NONE, so that the user could input. But the Default value does not refresh or change values.
I hope I have explained my question clearly. I would really appreciate any thoughts and comments.
Thanks,
Arunesh

Thank you much for your response.
I tried that and it did work. But my requirement is to have a user input the date. The basic idea is if the user decides on a predefined time range like Day Shift Today or Yesterday and so on... then the report would automatically calculate the values based on predefined date time values. On the other hand, if the intent is to run the report for an arbitrary period then the user supplies the date and time limits.
What I am trying to achieve is have the same parameter available for user input , but when the User decides he wants Predefined then the "textbox" populates with date and time as per his choice of predefind range.
I understand that by this the user can still overwrite the date and time on the text box, but the report will run the predefined values as long as he has the @PredefinedDateSelection Set to true.
Is there a way I can impement this?
Once again I thank you and appreciate your input.

How can we make lov as default value based on another lov values

Hi Experts,
Example
we r having 2 lovs asume that lov1 and lov2 based on lovv1 i want to make lov2 as a default .
We have done the steps as mentioned in this forum. actually its returning null value.
appreciate your help on this. Pls find the below code.
public void processFormRequest(OAPageContext pageContext, OAWebBean webBean)
super.processFormRequest(pageContext, webBean);
OAApplicationModule am= pageContext.getApplicationModule(webBean);
if(pageContext.isLovEvent())
if("lovValidate".equals(pageContext.getParameter(OAWebBeanConstants.EVENT_PARAM)) && "lovUpdate".equals(pageContext.getParameter(OAWebBeanConstants.EVENT_PARAM))||"lovPrepare".equals(pageContext.getParameter(OAWebBeanConstants.EVENT_PARAM)))
String lovInputSourceId = (String)pageContext.getLovInputSourceId();
if("lov1id".equals(lovInputSourceId))
OAMessageLovInputBean lovBean=(OAMessageLovInputBean)webBean.findIndexedChildRecursive("WorkOrder");
String lovInput = (String) lovBean.getValue(pageContext);
OAViewObject vo = (OAViewObject)am.findViewObject("ChargeTimeWorkOrdersLovVO");
if(vo != null)
OARow row = (OARow)vo.getCurrentRow();
if(row!= null)
OAMessageLovInputBean lovBean1=(OAMessageLovInputBean)webBean.findIndexedChildRecursive("lov21d");
String value=pageContext.getParameter("lov2id");
if(lovBean1!=null)
lovBean.setText("10"); }
Regards,
Srinivas

Hi Gyan,
We are gettign Null Pointer exception.
This is the code after modification for the current row:
OAApplicationModule am= pageContext.getApplicationModule(webBean);
if (pageContext.isLovEvent()) { String lovInputSourceId = pageContext.getLovInputSourceId();
if("WorkOrder".equalsIgnoreCase(lovInputSourceId))
OAViewObject vo = (OAViewObject)am.findViewObject("ChargeTimeWorkOrdersLovVO");
vo.getCurrentRow();
{ OAMessageLovInputBean compBean=(OAMessageLovInputBean)webBean.findIndexedChildRecursive("OpSeqNum");
if(compBean!=null)
{   compBean.setValue(pageContext,"10");          } } }
This is the error stack:
Error Page
Exception Details.
oracle.apps.fnd.framework.OAException: java.lang.NullPointerException
     at oracle.apps.fnd.framework.OAException.wrapperException(OAException.java:896)
     at oracle.apps.fnd.framework.webui.OAPageErrorHandler.prepareException(OAPageErrorHandler.java:1169)
     at oracle.apps.fnd.framework.webui.OAPageErrorHandler.processErrors(OAPageErrorHandler.java:1435)
     at oracle.apps.fnd.framework.webui.OAPageBean.processFormRequest(OAPageBean.java:2867)
     at oracle.apps.fnd.framework.webui.OAPageBean.preparePage(OAPageBean.java:1840)
     at oracle.apps.fnd.framework.webui.OAPageBean.preparePage(OAPageBean.java:538)
     at oracle.apps.fnd.framework.webui.OAPageBean.preparePage(OAPageBean.java:426)
     at OA.jspService(_OA.java:204)
     at com.orionserver.http.OrionHttpJspPage.service(OrionHttpJspPage.java:59)
     at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:462)
     at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:594)
     at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:518)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
     at com.evermind.server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:64)
     at oracle.apps.jtf.base.session.ReleaseResFilter.doFilter(ReleaseResFilter.java:26)
     at com.evermind.server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java:15)
     at oracle.apps.fnd.security.AppsServletFilter.doFilter(AppsServletFilter.java:318)
     at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:621)
     at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:370)
     at com.evermind.server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:889)
     at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:453)
     at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:313)
     at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:199)
     at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260)
     at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)
     at java.lang.Thread.run(Thread.java:619)
## Detail 0 ##
java.lang.NullPointerException
     at xbol.oracle.apps.eam.workplan.webui.XXChargeTimeCO.processFormRequest(XXChargeTimeCO.java:97)
     at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequest(OAWebBeanHelper.java:815)
     at oracle.apps.fnd.framework.webui.OAWebBeanContainerHelper.processFormRequest(OAWebBeanContainerHelper.java:382)
     at oracle.apps.fnd.framework.webui.OAPageLayoutHelper.processFormRequest(OAPageLayoutHelper.java:1189)
     at oracle.apps.fnd.framework.webui.beans.layout.OAPageLayoutBean.processFormRequest(OAPageLayoutBean.java:1579)
     at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequestChildren(OAWebBeanHelper.java:1027)
     at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequestChildren(OAWebBeanHelper.java:993)
     at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequest(OAWebBeanHelper.java:848)
     at oracle.apps.fnd.framework.webui.OAWebBeanContainerHelper.processFormRequest(OAWebBeanContainerHelper.java:382)
     at oracle.apps.fnd.framework.webui.beans.form.OAFormBean.processFormRequest(OAFormBean.java:395)
     at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequestChildren(OAWebBeanHelper.java:1027)
     at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequestChildren(OAWebBeanHelper.java:993)
     at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequest(OAWebBeanHelper.java:848)
     at oracle.apps.fnd.framework.webui.OAWebBeanContainerHelper.processFormRequest(OAWebBeanContainerHelper.java:382)
     at oracle.apps.fnd.framework.webui.beans.OABodyBean.processFormRequest(OABodyBean.java:363)
     at oracle.apps.fnd.framework.webui.OAPageBean.processFormRequest(OAPageBean.java:2863)
     at oracle.apps.fnd.framework.webui.OAPageBean.preparePage(OAPageBean.java:1840)
     at oracle.apps.fnd.framework.webui.OAPageBean.preparePage(OAPageBean.java:538)
     at oracle.apps.fnd.framework.webui.OAPageBean.preparePage(OAPageBean.java:426)
     at OA.jspService(_OA.java:204)
     at com.orionserver.http.OrionHttpJspPage.service(OrionHttpJspPage.java:59)
     at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:462)
     at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:594)
     at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:518)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
     at com.evermind.server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:64)
     at oracle.apps.jtf.base.session.ReleaseResFilter.doFilter(ReleaseResFilter.java:26)
     at com.evermind.server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java:15)
     at oracle.apps.fnd.security.AppsServletFilter.doFilter(AppsServletFilter.java:318)
     at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:621)
     at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:370)
     at com.evermind.server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:889)
     at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:453)
     at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:313)
     at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:199)
     at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260)
     at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)
     at java.lang.Thread.run(Thread.java:619)
java.lang.NullPointerException
     at xbol.oracle.apps.eam.workplan.webui.XXChargeTimeCO.processFormRequest(XXChargeTimeCO.java:97)
     at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequest(OAWebBeanHelper.java:815)
     at oracle.apps.fnd.framework.webui.OAWebBeanContainerHelper.processFormRequest(OAWebBeanContainerHelper.java:382)
     at oracle.apps.fnd.framework.webui.OAPageLayoutHelper.processFormRequest(OAPageLayoutHelper.java:1189)
     at oracle.apps.fnd.framework.webui.beans.layout.OAPageLayoutBean.processFormRequest(OAPageLayoutBean.java:1579)
     at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequestChildren(OAWebBeanHelper.java:1027)
     at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequestChildren(OAWebBeanHelper.java:993)
     at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequest(OAWebBeanHelper.java:848)
     at oracle.apps.fnd.framework.webui.OAWebBeanContainerHelper.processFormRequest(OAWebBeanContainerHelper.java:382)
     at oracle.apps.fnd.framework.webui.beans.form.OAFormBean.processFormRequest(OAFormBean.java:395)
     at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequestChildren(OAWebBeanHelper.java:1027)
     at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequestChildren(OAWebBeanHelper.java:993)
     at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequest(OAWebBeanHelper.java:848)
     at oracle.apps.fnd.framework.webui.OAWebBeanContainerHelper.processFormRequest(OAWebBeanContainerHelper.java:382)
     at oracle.apps.fnd.framework.webui.beans.OABodyBean.processFormRequest(OABodyBean.java:363)
     at oracle.apps.fnd.framework.webui.OAPageBean.processFormRequest(OAPageBean.java:2863)
     at oracle.apps.fnd.framework.webui.OAPageBean.preparePage(OAPageBean.java:1840)
     at oracle.apps.fnd.framework.webui.OAPageBean.preparePage(OAPageBean.java:538)
     at oracle.apps.fnd.framework.webui.OAPageBean.preparePage(OAPageBean.java:426)
     at OA.jspService(_OA.java:204)
     at com.orionserver.http.OrionHttpJspPage.service(OrionHttpJspPage.java:59)
     at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:462)
     at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:594)
     at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:518)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
     at com.evermind.server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:64)
     at oracle.apps.jtf.base.session.ReleaseResFilter.doFilter(ReleaseResFilter.java:26)
     at com.evermind.server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java:15)
     at oracle.apps.fnd.security.AppsServletFilter.doFilter(AppsServletFilter.java:318)
     at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:621)
     at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:370)
     at com.evermind.server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:889)
     at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:453)
     at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:313)
     at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:199)
     at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260)
     at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)
     at java.lang.Thread.run(Thread.java:619)
Regards,
Srinivas
Edited by: 878523 on Aug 11, 2011 4:03 AM

How to include a default value in Dynamic cascading prompt from 2nd Level.

Hi,
I use Command Object in 'Datbase Expert' to create 'Custom Tables' and use these tables to fetch LoVs. I use Dynamic Cascading Prompts in the reports. I have a peculiar requirement using DCP.
There are Four Levels as in the Example:
Continent
   Country
   State
   City
In the Custom Table, requirement is to create an additinal row with '' that represents 'All Values selected' for that level starting from second. and The default selection should be '' . I defined that '*' means 'All Vales Selected in the report' This si not a problem. But the problem how to show a default value in a Dynamic Cascading Prompt i.e. how we can make sure in an default value can be selected in DCP from Second Level?
how can the examples 1,2,3 can be achieved detaisled below beacsuse we need to show a default value in Casacading Propmt
Eg of Schedules with DCP:
Schedule 1
Continent: Europe
   Country: *
   State: *
    City: *
Schedule2:
   Continent: Europe
   Country: England
    State: *
     City: *
Schedule 3:
    Continent: Europe
   Country: England
    State: Greater London
     City: *
Schedule 4:
Continent: Europe
   Country: England
    State: Greater London
     City: City of london

You won't be able to have a true "default" value in the various cascading levels, since there aren't default values in a dynamic cascading parameter. That being said, I've created a sample report in Crystal Reports 2008 that has a Command-driven DCP with '*' values for the 2nd and 3rd levels of my 3-tier DCP and have accounted for them in the record selection criteria. You can find the sample here at https://www.box.net/shared/mav5qp337j

How to default values in LOV

Hi,
I have created a page in which I have two different LOVs. My requirement is to default some value in the First LOV i.e. "ALL"
and the second LOV which is dependent on the first LOV will gets populated with the values based on the first one on the page load itself.
Both the LOVs have "autoSubmit" and "partialTriggers"realtion between them.
The problem I am facing is that I am able to set some default value to the first LOV with value as "ALL" by using "setSubmiitedValue" on LOV from backing bean on the page load but the second LOV popup (dependent LOV) is coming blank on page load.
But if i select same value "ALL" form the first LOV popup after page load then second LOV popup gets populated with values based on first LOV
Please provide some urgent help that how to default any LOV with some value and based on that second LOV gets populated on the page load itself.
Thanks in Advance
Kanika Dhamija

Hi,
Can you please explain a bit more the ' ... is to default some value.. ' part?
When exactly do you want to set a default Value?
Depending on your case, there is always the declarative way to consider through BC
some approaches on different cases:
How to set a default value in an ADF table when adding a new row
http://www.youtube.com/watch?v=9WQ0SDVVWtE
http://adfcodebits.blogspot.co.uk/2010/04/bit-13-overriding-create-to-set-default.html
cascading LOVs
http://andrejusb.blogspot.co.uk/2012/11/cascading-lovs-in-jdeveloper-111230.html
hope this helps
Regards,
Dimitrios.

4.2.1 Bug: Current values of child cascading LOVs are LOST.

Hello, ApEx Team!
This bug affected 4.1.1 and 4.2.1 but with different behavior. It seems that someone was trying to fix it.
According to docs "whats new in 4.1" a value of refreshed child cascading lov is derived from default value settings of select list.
Please follow these steps to see the bug.l builder-work done for you here http://apex.oracle.com/pls/apex/f?p=14110:1
1.Create primary select list P1_SEL1.
Display null value: Yes
LOV definition:
    select 'aaa' name,'a' id
      from dual
     union all
    select 'bbb' name,'b' id
      from dual
     union all
    select 'ccc' name,'c' id
      from dual2.Create child select list P1_SEL2.
Cascading LOV Parent Item: P1_SEL1
Page Items to Submit: P1_SEL2 (I strongly believe that this item should be submitted automatically along with Parent Item)
Display Null Value: Yes
LOV definition:
    select 'aaa' name,'a' id
      from dual
     union all
    select 'bbb' name,'b' id
      from dual
     where :P1_SEL1 in ('b','c')
     union all
    select 'ccc' name,'c' id
      from dual
     where :P1_SEL1 in ('c')
Default: return :P1_SEL2;
Default Value Type: PL/SQL Function Body3.Run app. and manually change P1_SEL1 and P1_SEL2 to 'bbb'.
4.Manually change P1_SEL1 to 'ccc'.
h2.
In apex 4.1.1..
you see that P1_SEL2 is resetted to NULL automatically. The value of P1_SEL2 is LOST. Although I tell apex to submit P1_SEl2 value to set its session state, but the session state still remains NULL.
The session state of P1_SEL2 is always NULL and I have no idea how to set it as it is set in a browser at the moment of changing parent LOV P1_SEL1.
h2.
Now apex 4.2.1.
It seems this bug is fixed. Indeed it is NOT fixed.
To see this bug in 4.2.1 just...
5.Create a third child select list P1_SEL3 which depends on P1_SEL2.
Cascading LOV Parent Item: P1_SEL2
Page Items to Submit: P1_SEL3 (Again, I hope you will always submit current item automatically as you do for the parent item)
Display Null Value: Yes
LOV definition:
    select 'aaa' name,'a' id
      from dual
     union all
    select 'bbb' name,'b' id
      from dual
     where :P1_SEL2 in ('b','c')
     union all
    select 'ccc' name,'c' id
      from dual
     where :P1_SEL2 in ('c')
    Default: return :P1_SEL3;
    Default Value Type: PL/SQL Function Body6.Run app. again. Manually set P1_SEL1, P1_SEL2 and P1_SEL3 to 'bbb'.
7.Change P1_SEL1 to 'ccc' and see the bug:
1) P1_SEL2 is reset to NULL for just a short time and than restored to 'bbb'.
2) P2_SEL3 is reset to NULL. So the session state was NULL for this item at the moment of calculating default value. As a result the value of child cascading lov is LOST.
So this bug is still present in 4.2.1.
Can I hope to get workaround for this problem in 4.1 and 4.2?
Thank you,
Vladimir
Edited by: vgoncharov on 17.12.2012 19:37
Edited by: vgoncharov on 17.12.2012 22:45

Good to hear this is already being worked on.
When we tried to work around the "Automatic detection" bug - changing the "Application Language Derived From" to "Application Preference" or "Session" - we hit issue that some page processes were not firing in translated application.
See Page processes not firing in Translated applications
Jan

APEX 4.0.2 Multi-selection on a cascade LOV select list only pass 1 value

Hello everyone,
I am struggling to make a cascading LOV select list has multi-selection.
On one report page.
I have 2 select list
The first one lists the court name (P4_COURT_NAME), the second one (P4_DEFENDANT) list all defendants who currently engaged in the court.
The problem is when I allow the defendant select list become multi-select, when it submit it only pass the first selected value.
So I create just a simple select list based one list of value, and make it allow multi-selection. When it submit, the normal select list can pass selected values properly, while the cascade LOV select list pass only the first selected value.
Please help if any of you have an idea why.
We use APEX 4.0.2.00.07, Oracle data version iis 11g
The some configuration settings I set for the P4_DEFENDANT IS
Value required: Yes
Page Action When value changed: None
Allow Multi Selection: Yes
Named LOV: --Select Named LOV-
Display Extra value : Yes
Display Null Value: Yes
Null Display Value: --Select—
Null return value:
Cascading LOV Parents Items: P4_COURT_NAME
Page Items to Submit: P4_DEFENDANT
Optimize refresh: YES
List of value definition
SELECT def.first_name || ' ' || def.surname || ' (PRN: ' || def.prn || ' )' as d, def.def_id as r
FROM defendant def INNER JOIN court_engagement ce
ON def.def_id = ce.defendant_id
WHERE (ce.date_joined_aodt_court IS NOT NULL
AND (ce.date_terminated IS NULL OR to_date(ce.date_terminated,'dd/mm/yyyy') > to_date(sysdate,'dd/mm/yyyy'))
AND UPPER(ce.court_name) LIKE UPPER(:P4_COURT_NAME)
AND ce.active = 1)Source Used: Only when current value in session state is null
Source Type: Static Assignment
Maintain session state: Per session
The rest is default.
Thanks in advance.
Ann

Hi Chintan,
The "Source used" for those items are "Always, replacing any value in the session state". To set them to "Only when current value in session state null" sounds a good solution to me.
However, a strange thing just happened - now I will not lose the values of the items after the page reloading, although I have changed nothing in the page in my application since I asked the question. I don't understand why all of a sudden the reloading doesn't make me lose changed values any more. Let me dig it tomorrow to see what I'll find.
Thanks so much for your help.
Christine

Apex 4 Cascading LOV's how to set a child LOV back to null return value

Hi,
My problem is I am using the new Dynamic Actions to implement Cascading LOV functionality in Apex 4 which means not having to submit the page to update child LOVs after parent LOV changes.
What I am finding is that when you change the parent LOV value then the child LOV (which has a null return value) is not defaulting to the null return value (in my case no selection should return -1) if its list is filtered to a different set of values which doesnt have a valid selection. The child LOV is left without a selection when I need it to default back to the null return value (-1, representing all values).
Also I was hoping to do this before the page is submitted so the filtering down the hierarchy of LOVs will work where the child is null (-1, meaning all values) and in turn its child LOV(s) will filter also from the null child value.
Any help would be much appreciated.
Thanks

Hi 804641,
I'm not sure if I get your problem and I tried to reproduce it.
http://apex.oracle.com/pls/apex/f?p=2672:6 is my example with a cascading LOV where I have also defined a dynamic action which fires when P6_EMPNO changes and it shows the current selection.
Maybe it helps if you setup an example on apex.oracle.com and provide the workspace/user/pwd so that I can have a look. I'm also not sure about your sentence "using the new Dynamic Actions to implement Cascading LOV functionality", because dynamic actions are not needed for cascading LOVs. It's a feature of the item types themselves where you just have to set the "Cascading LOV Parent Item(s)" attribute.
Regards
Patrick
My Blog: http://www.inside-oracle-apex.com
APEX 4.0 Plug-Ins: http://apex.oracle.com/plugins
Twitter: http://www.twitter.com/patrickwolf

Cascading LOVs (v4) and retaining the child value

I've implemented the default delivered implementation in version 4 (4.0.2.00.07 to be exact) of cascading LOVs. Working fine except for one thing...after refresh of a child LOV, the previously selected value is wiped out even when it's still a valid value in the child LOV. If it's an invalid value, I can understand that it would be wiped out, but if it's still valid, I'd like it to be retained.
Example...let's say I have these two select-lists (parent and child).
P100_PARENT
P100_CHILD
P100 Child's SQL references P100_PARENT:
where b.child = NVL(a.parent,b.child)
Optimize refresh is also set to 'No' because I need the child to refresh to all children selections when parent is null.
In short, the parent is optional. If Parent is null, show all child options regardless of Parent. If Parent is defined, show only the child options for the parent.
So when parent is null, I get all child options (OK). I pick one.
If I go to parent and change it to a specific value that IS the parent of the child I chose, my expectation is the child select list should refresh (it does) but if my chosen value is still in the list, it should scroll to it and select it. Instead, it wipes it out.
To put some values into the example...
Let's say parent values are:
A
B
C
null
Let's say child values are numbers such that valid values are:
1 through 10 when parent is A
11 through 20 when parent is B
20 through 30 when parent is C
1 through 30 (any child value) when parent is null.
So I have a null parent LOV value and the child shows me 1 through 30 (OK). I pick 15.
I change the parent to 'B'. Child list refreshes (OK). But while 15 is still a valid value in the list, it is not selected again (my value is wiped out). I still want it to have '15' selected.
Any workaround? Is this a bug? Enhancement opportunity?

Hi Matt,
have you had a look at Skill Builders "Save Value on Cascade" dynamic action plug-in? See http://skillbuilders.com/oracle-apex/Application-Express-APEX-Consulting-Training.cfm?tab=free-plugin-downloads
Regards
Patrick
My Blog: http://www.inside-oracle-apex.com
APEX Plug-Ins: http://apex.oracle.com/plugins
Twitter: http://www.twitter.com/patrickwolf

Multiple Default Values in a Multi-Select LOV Parameter?

Hi,
I have a report in BI Publisher standalone version 10.1.3.4. The report has a list of values called org_lov. This lov is attached to a multi-selection p_org_code parameter from which it is desirable to also have multiple default values.
For example, if org_lov has the following values:
100
101
102
103
104
105
106
I would like to have 3 default values and have 100, 101,105 as the defaults if the user doesn't specifically select anything from the LOV. So far my testing has only allowed a single default value.
Here are my settings:
Data type = string
Multiple Selection = checked
Can select All = checked (all values passed)
On the Default Value field, I have tried the following:
1. 100, 101,105
2. [100, 101,105]
3. '100', '101','105'
4. (100, 101,105)
5. ['100', '101','105']
6. ('100', '101','105')
I don't need these default values highlighted in the LOV, I just need it passed correctly to the query (a data template).
Thank you in advance for any input.

Hi,
Sorry for the delayed reply. I tried what you suggested but the problem is that by having the "Multiple Selection" property of the parameter unchecked, the result is that it allows the user to only have a single value passed. The user wants the option to select multiple values AND also have the multiple default values.
Thanks anyway.

How to set a default value for a drop down list box and then apply cascading based on the default value in Infopath 2010.

Hello Everyone
I have two drop downs. Both are coming from look up fields from two lists. i want to set a default value(first list item) for the first drop down list box and then apply cascading based on the default value for the next drop down list box. I found one article(http://www.bizsupportonline.net/infopath2010/display-first-item-drop-down-list-box-infopath-2010.htm)
where in i can set a default value but i can't apply cascading based on that default value. Any suggestions would be highly appreciated.
Thanks
Ramanjulu Naidu N

Hey Ramanjulu,
Take a look at the below article which I believe will answer your question.
http://basquang.wordpress.com/2010/03/29/cascading-drop-down-list-in-sharepoint-2010-using-infopath-2010/
Daniel Christian (MCTS)

How to change default value of a parameter and LOV attached to a parameter

Hi All
I am new to discoverer reports and I need to accomplish the following tasks:
1. Need to change the SQL query of a discoverer report
2. Need to change the default value of parameter ( from constant to current month). In the discoverer plus responsibility when I open the report and go to tools>>parameter>>edit
I can see the constant default value given there. On the right hand side there is a drop down which says 'Value'. I guess if i need to put a SQL as defaul value I need to change the drop down to sql or something and then put the SQL. Problem is the drop down is froezen and I cannot change it.
Even if I try to create a new parameter/report.
3. Need to change the LOV associated to the item on which the parameter is based.
I have the discoverer plus responsibility attached to myself and do not have the discoverer administrator tool (desktop developer tool like forms 6i). My questions are:
1. Can I change the SQL query by using discoverer plus responsibility or do I need discoverer administrator tool?
2. Any help on how to get the default value from an SQL query? currently it is a constant value.
3. Is there any way to figure out is the LOV is madeup of fixed constant values (like independednt value set) or they are fetched from some sql query(table validated value sets)?
Any pointers/solutions will be highly appriciated!!!
Thanks in advance.
Thanks and Regards,
Shashank

HI,
Need to change the SQL query of a discoverer reportThe discoverer generate the SQL according to the item, calculation and conditions designed in the worksheet.
You cannot edit a specific worksheet SQL.
In order to change the SQL you need to change the worksheet using the "Edit-> worksheet" from the menu.
To change the SQL generated inside the folders you need to do that using the administrator.
Need to change the default value of parameterYou cannot use SQL statements for the parameter default value. it is not supported. if you need default you can use only constant (as it was). otherwise you can set the parameter to be optional and then add to this condition an OR saying that <item>= NVL(:Parameter,<your default>)
as <your default> you can use calculations so that if for example you want the current date you will create a calculation containing: SYSDATE.
Is there any way to figure out is the LOV is madeup of fixed constant values (like independednt value set) or they are fetched from some sql query(table validated value sets)?They are based on SQL, even they are const then you will see it as
select 'a','b'... from dual
you can find the LOV (called item classes) in the administrator.
Go to the item your condition is based on and see its properties.
In the properties you should see the item class it uses.
Close the properties and go to the item classes tab, search for this item class and figure the folder it came from.
This is the folder you need to change in order to change the LOV.
Hope it helped a bit, you sure asked several big questions...
Tamir

How can I set default value in a field based on a LOV?

Here's the LOV:
select txtName, ID
from FAC_LK_PROJECT_PRIORITY
order by 1
I tried:
select id from FAC_LK_PROJECT_PRIORITY priority where txtname = 'Medium';
and set the default value type to be PL/SQL function body but that didn't work - I get this error:
ORA-06550: line 2, column 1: PLS-00428: an INTO clause is expected in this SELECT statement
Error ERR-9131 Error in PLSQL function body for item default code, item=P19_PRIORITYID
OK
The item is a select list w/ db column as source: PRIORITYID

Hi Scott. thanks for answering. I get from your post that I need to declare a variable and then return something. I changed it to this
declare v_id number := null;
begin
select id into v_id
from FAC_LK_PROJECT_PRIORITY priority
where txtname = 'Medium';
return v_id;
end;and it works.
Why do you use a loop? In case there's >1 row returned by the query?

How to set the default value of a LOV that is found in a view criteria

HI,
I need to set the default value of an LOV that is found in a view criteria. I tried to set a groovy expression but unfortunately it wasn't read. i also tried to bind the LOV to a bind variable and set the value of the bind variable in the constructor of my backing bean but unfortunately the default value appeared the second time i entered the screen and not on page load.
Can anyone advise where can i set the default value,
Thanks

if you want some default value in LOV. you go to edit list of value wizard-> UI hint->include no selection Item checkbox -checked.use labeled item first of list- and beside that put the label. but when you try to get value, it will show null.but you can manipulate in ur java , if it default value

Cascading LOVs losing default values

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