JSF keeps displaying old values after Validation Phase fails

Hi all,
I would like to ask some help in understanding a particular behaviour that JSF shows when Validation Phase fails.
I'm using:
- Tomcat 7.0.2
- JSF 1.2_12
- RichFaces 3.3.3
Problem description.
I wrote a form with 4 input fields: an inputText and 3 selectOneMenu. The inputText is required while the selectOneMenus don't require any validation.
Attached to the first selectOneMenu (row 32), is an a4j:support tag so that, whenever the change event is fired, the list of items of the second
and the third selectOneMenu (row 44 and 58) are correctly filled (note that the mandatory of the inputText is ignored thanks to the ajaxSingle attribute).
In particular, after loading the two lists of items, the actionListener forces the value of the second and the third selectOneMenu to null.
This mechanism seems to work fine until I submit the whole form without filling the input text: as expected, JSF validation fails but if I change the value of
the first selectOneMenu again (causing a new submit), the page keeps displaying the values specified before JSF validation failed for the second and the third
selectOneMenu (note that the actionListener is still called and the values of the second and the third selectOneMenu are still forced to null).
Since I'm using a simple PhaseListener, I noticed the following: before JSF validation fails, every time I change the value of the first selectOneMenu, JSF life
cycle always calls the get method for the second and the third selectOneMenu during the Render Response Phase. In this way, JSF is able to "see" that
those values have been set to null during the Invoke Application Phase.
After validation fails, JSF stops calling those getters when I change the value of the first selectOneMenu.
I hope my explanation was clear enough, thanks a lot for your help.
Regards,
Nico
Web Page
<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
                      "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:f="http://java.sun.com/jsf/core"
      xmlns:h="http://java.sun.com/jsf/html"
      xmlns:a4j="http://richfaces.org/a4j"
      xmlns:rich="http://richfaces.org/rich">
<head>
<title>Prove Rich</title>
</head>
<body>
<h2>Prove Rich</h2>
<f:view>
<a4j:outputPanel ajaxRendered="true">
    <h:messages style="color:red" />
</a4j:outputPanel>
<h:form>
<p>
     Input required: <h:inputText value="#{provaProbReplyBean.inputRequired}" required="true" />
</p>
<p>
     <h:outputText value="Scegli il canale:" />
     <h:selectOneMenu value="#{provaProbReplyBean.canale}">
        <f:selectItem itemLabel="--" itemValue="" />
        <f:selectItem itemLabel="Profamily" itemValue="Profamily" />
        <f:selectItem itemLabel="Captive" itemValue="Captive" />
        <a4j:support event="onchange" action="#{provaProbReplyBean.caricaProcBanche}"
                              ajaxSingle="true" reRender="procedure, banche" />
     </h:selectOneMenu>
</p>
<p>
     <h:outputText value="Scegli la procedura:" />
     <h:selectOneMenu id="procedure" value="#{provaProbReplyBean.procedura}">
        <f:selectItem itemLabel="--" itemValue="" />
        <f:selectItems value="#{provaProbReplyBean.procedureList}" />
        
        <a4j:support event="onchange" ajaxSingle="true" />
     </h:selectOneMenu>
</p>
<p>
     <h:outputText value="Scegli la banca:" />
     <h:selectOneMenu id="banche" value="#{provaProbReplyBean.banca}">
        <f:selectItem itemLabel="--" itemValue="" />
        <f:selectItems value="#{provaProbReplyBean.bancheList}" />
        
        <a4j:support event="onchange" ajaxSingle="true" />
     </h:selectOneMenu>
</p>
<p><h:commandButton value="Submit" /></p>
</h:form>
</f:view>
</body>
</html>
Bean
public class ProvaProbReply {
     private String inputRequired;
     private String canale;
     private String procedura;
     private String banca;
     private Map<String, List<SelectItem>> canaliProc = new HashMap<String, List<SelectItem>>();
     private Map<String, List<SelectItem>> canaliBanche = new HashMap<String, List<SelectItem>>();
     private List<SelectItem> procedureList = new ArrayList<SelectItem>();
     private List<SelectItem> bancheList = new ArrayList<SelectItem>();
     public ProvaProbReply() {
          List<SelectItem> l = new ArrayList<SelectItem>();
          l.add(new SelectItem("Cessione del quinto"));
          l.add(new SelectItem("Credito al consumo"));
          l.add(new SelectItem("Mutui"));
          canaliProc.put("Profamily", l);
          l = new ArrayList<SelectItem>();
          l.add(new SelectItem("Credito al consumo"));
          canaliProc.put("Captive", l);
          l = new ArrayList<SelectItem>();
          canaliBanche.put("Profamily", l);
          l = new ArrayList<SelectItem>();
          l.add(new SelectItem("BDL"));
          l.add(new SelectItem("BM"));
          l.add(new SelectItem("BPM"));
          l.add(new SelectItem("CRA"));
          canaliBanche.put("Captive", l);
     public String getInputRequired() {
          return inputRequired;
     public void setInputRequired(String ir) {
          inputRequired = ir;
     public String getCanale() {
          return canale;
     public void setCanale(String c) {
          canale = c;
     public String getProcedura() {
          System.out.println("\ngetProcedura called\n");
          return procedura;
     public void setProcedura(String p) {
          procedura = p;
     public String getBanca() {
          System.out.println("\ngetBanca called\n");
          return banca;
     public void setBanca(String b) {
          banca = b;
     public List<SelectItem> getProcedureList() {
          return procedureList;
     public List<SelectItem> getBancheList() {
          return bancheList;
     public String caricaProcBanche() {
          System.out.println("\nListener called\n");
          procedureList.clear();
          bancheList.clear();
          if(canale != null && !canale.equals("")) {
               procedureList.addAll(canaliProc.get(canale));
               bancheList.addAll(canaliBanche.get(canale));
          System.out.println("BEFORE setting:\n");
          System.out.println("\nProcedura: "+procedura+"\n");
          System.out.println("Banca: "+banca+"\n");
          procedura = null;
          banca = null;
          System.out.println("\n\n\nAFTER setting:\n");
          System.out.println("\nProcedura: "+procedura+"\n");
          System.out.println("Banca: "+banca+"\n");
          return "";
}Edited by: 869000 on 28-giu-2011 14.05

I'm thinking this has to do with the fact that the UIComponents use the localValue after validation fails. This prevents the values from being overwritten when re-rendering the page, i.e. the inputs keep the value set by the user.
The solution is to manipulate the components directly during the AJAX request when the first pull down is changed. Use the binding attribute to place them into your bean and clear the value directly. That way it will not matter that the expression is not evaluated.

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iam pasting my code which iam working here
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<?xml version = '1.0' encoding = 'windows-1252'?>
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<?xml version="1.0" encoding="windows-1252"?>
<page xmlns="http://xmlns.oracle.com/uix/controller"
xmlns:ui="http://xmlns.oracle.com/uix/ui"
xmlns:ctrl="http://xmlns.oracle.com/uix/controller"
xmlns:html="http://www.w3.org/TR/REC-html40"
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<dataScope xmlns="http://xmlns.oracle.com/uix/ui">
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</provider>
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<document>
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<head title=""/>
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<head title=""/>
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// the main menu "Tools/Override Methods...".
check this out iam unable to display in my display page so help me out if any one can

No, in this case, I'm using standard JSP with ADF and struts validator.
If I don't use struts validator and there are errors (such as putting a string into a number which produces a jbo-25009), the list value will be retained.
When using the validator, it appears that it is NOT retained.
I've written some code to attempt to set the list element back, which "looks like" it's working right now.
There's still a problem with the second scenario:
1. user clicks checkbox and hits [submit]
2. get's error - you have to enter 5 address items
3. User wants to backout, so he unchecks the box and resubmits
4. The box redisplays as "checked"
SO, at that point, I thought... can't I use YOUR EXAMPLE on how to handle a checkbox.
I place some code in the reset method of the form to perform this:
map.put("AddressChangeFlag", (String) "" );
(that is, I've detected via the request that this flag is null), so I'm trying to make sure it retains it!
I do that and it runs into a problem during the processUpdateModel aT:
BindingContainerValidationForm updateForm= (BindingContainerValidationForm) actionContext.getActionForm();
//Get the binding for our particular column JUCtrlAttrsBinding checkBoxBinding = (JUCtrlAttrsBinding)updateForm.get("AddressChangeFlag");
call, with an error:
JBO-29000: Unexpected exception caught: java.lang.ClassCastException, msg=java.lang.String
java.lang.String
The value for updateForm.get("AddressChangeFlag") is "", which I'm assuming means the form field is no longer in the request object??
I'm lost at this point, and have been working on it for more than 1 day.
Thanks for responding though, and I await feedback ;)

JSF keeps displaying old values after Validation Phase fails

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