Forwarding a variabe in request scope

When i am trying to forward a variable in request scope along with action, i am not not able to retrieve the value in action class.As in config.xml one action will call other action in LayoutConfig.xml I couldnt retrieve the vaue in action class.So anyone please suggest me in this criteria.
regards
Anuradha

Hi Steve,
Try to pass your parameter in layoutconfig.xml instead of in Java Script function of JSP Page.
JSP:
document.forms[0].action='<isa:webappsURL name="/b2c/transactiondetails.do"/>?transId='+transvalue;
documen.forms[0].submit
config.xml
<action path="/b2c/transactiondetails" forward="UIArea : transactionDetails"/>
LayoutConfig.xml
<UIComponent name="transactionDetails" action="/b2c/getTransactionDetails.do"
title="b2c.transactiondetails.title"/>
config.xml
<action path="/b2c/getTransactionDetails" type="com.sap.isa.isacore.action.loyalty.ZGetTransactiondetailsAction">
<forward="succecc" path="UIInclude:/b2c/transactionDetails.inc.jsp"/>
</action>
Try below it may work.
JSP:
document.forms[0].action='<isa:webappsURL name="/b2c/transactiondetails.do"/>;
documen.forms[0].submit
config.xml
<action path="/b2c/transactiondetails" forward="UIArea : transactionDetails"/>
LayoutConfig.xml
<UIComponent name="transactionDetails" action="/b2c/getTransactionDetails.do?transId="transvalue" title="b2c.transactiondetails.title"/>
config.xml
<action path="/b2c/getTransactionDetails" type="com.sap.isa.isacore.action.loyalty.ZGetTransactiondetailsAction">
<forward="succecc" path="UIInclude:/b2c/transactionDetails.inc.jsp"/>
</action>
You will get transld value in action class ZGetTransactiondetailsAction and get the attribute from request object by getParameter/getAttribute method also you can set this parameter/attribute again in request object in ZGetTransactiondetailsAction and then retrieve it again on transactionDetails.inc.jsp page from request object.
If getAttribute do not work try getParameter method.
I hope this will help you.
eCommerce Developer

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I'm wondering what everyone's opinion is on using different scopes in my situation. I have an application where users login and have a few separate items they can update via forms. My application can go one of two ways:
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A request/response pair is one communication between the client browser and the web server. A submit form action generates a new request.
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Hi,
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Hi,
I am new to JSF and unfortunately I am running into a problem that I am not entirely sure about. I look in other forums and what I am doing looks right but I am not getting the desired result.
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</managed-bean>I then have a log on page with a form which contains a user name and password field. The tags are defined as
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<h:inputSecret immediate="false" required="true"
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When I submit the form the web app navigates to a jsp page which attempts to do validation against a database.
The first step though is retrieving the object which is suppose to be in request scope.
I attempt the following but I get back null which causes a NullPointerException. Why can't if find the bean?
ExternalContext ec = FacesContext.getCurrentInstance().getExternalContext();
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Alex.

Something like that:
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How to get detailStamp working in an af:table when using request scope ?

<af:table var="row" id="t1" value="#{listUsers.users}" summary="Userlist" binding="#{listUsers.ATable}" [...]
<af:column sortable="false" headerText="Username" id="c13" filterable="true">
<af:outputText value="#{row.username}" id="ot13"/>
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<f:facet name="detailStamp">
<af:panelFormLayout rows="4" labelWidth="33%" fieldWidth="67%" inlineStyle="width:795px" id="pfl1" labelAlignment="start" >
<af:group id="g1">
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I feel there is nothing special with this.
But I've tested with 2 rows in my table and when I disclose rows, I get random results :
sometimes I get the details related to the row disclosed, but sometimes I get the details of the other row.
I've read several posts on the subject but none really helpful.
Another problem ; I've noticed that when I disclose or close a row, getUsers() is called, this method fetch the data from the DB, any way to prevent it ?
For the second problem, the solution I see would be to : change scope of listUsers to session instead of request, fetch from the DB only when "refresh", not when "detailStamp",
but I've no clue on how to actually do the "only when part"
Thanks in advance,
JP

Ok when I change the scope of ListUsers to session it's "ok" since I only load the list from the DB once (just like the demo that does not have this problem since the demo does not use the DB)
When I change the scope for request and that the page is refreshed then the object ListUsers is "recreated" and the data reloaded : that's the expected behavior
So I prefer to have the scope sets to request
The problem is that when a user disclose/close a detailstamp and that the scope is set to request,
then the data is reloaded from the DB
because apparently this event acts like a "refresh"
because this event (disclose/close) cause the destruction of what is in the request scope ...
That's my understanding, probably few mistakes, I'm beginning with ADF/JSF
It seems that when I load the data from the DB, it's not always in the same order, causing the problem itself probably, which is not ADF related BUT ;
what I would like to know is how to (elegantly) prevent the event of "disclose/close" to act like a "refresh" ?
Because even if I fix the "not ADF related problem" (if there is one), loading the list from the DB each time, appears really useless and the DBA won't like me !
A solution could be to leave the session scope, but then my question would be ;
*how to know I've to reload from the DB ?"
I could just "reload it on page load", seems ok to me but
I'm not sure it's the best, I would like to have your opinion, I've found this article for the "on page load" part ;
http://groundside.com/blog/DuncanMills.php?title=adf_executing_code_on_page_load&more=1&c=1&tb=1&pb=1
Thanks,
JP

Validation error while trying to change a value in a request scope bean

- JBoss 4.2.3.GA
- JSF 1.2_09-b01-BETA1 (Mojarra)
- Java 5 Update 17
Hello, everybody!
I'm having the following problem in my JSF web application:
I have a request scope backing bean. The first time this bean is loaded (I check
this with the ResponseStateManager.isPostBack() method) I fill a list of SelectItem
instances that are to be displayed in the JSF page in a +<h:selectOneMenu>+ component.
The list goes, of course, to the +<h:selectOneMenu>+'s +<f:selectItems>+ facet child
component. In the constructor I also define the value that goes to the value property
of the +<h:selectOneMenu>+ component. This value is a property in the backing bean, as
is the list of SelectItem instances. Until now we have something like this:
The backing bean declaration in faces-config.xml:
<managed-bean>
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    <managed-bean-class>br.urca.solicitacoes.web.PaginaSolicitacaoGeral</managed-bean-class>
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</managed-bean>
The relevant parts of the JSF page:
<h:form id="form">
    <h:selectOneMenu value="#{solicitacaoGeral.setorOrigem}" id="foco">
        <f:selectItems value="#{solicitacaoGeral.setoresOrigem}" />
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</h:form>
The relevant parts of the backing bean class:
public class PaginaSolicitacaoGeral
    private final List<SelectItem> fSetoresOrigem = new ArrayList<SelectItem>();
    private Setor fSetorOrigem;
    public PaginaSolicitacaoGeral()
        if (primeiraExibicao()) // First load (!ResponseStateManager.isPostBack())
            // Fill fSetoresOrigem...
            fSetorOrigem = ...
        else // Page submitted
            // Read below...
    public List<SelectItem> getSetoresOrigem()
        return fSetoresOrigem;
    public Setor getSetorOrigem()
        return fSetorOrigem;
    public void setSetorOrigem(Setor setorOrigem)
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        ResponseStateManager gerenciadorEstadoResposta =
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            FacesContext.getCurrentInstance(), idFerramentaExibicao);
        return !gerenciadorEstadoResposta.isPostback(
            FacesContext.getCurrentInstance());
}But when the user submits the form and the bean constructor is called again
(this time the method ResponseStateManager.isPostBack() returns true ),
in the else block in the constructor above, I need to fill fSetoresOrigem with
other values and also the fSetorOrigem field because, of course, the fSetorOrigem
field has to be a valid value that exists in the new fSetoresOrigem list.
JSF is not complaining about the change to the list items, but it is complaining
to the change to the fSetorOrigem field (the list value), even though it is a
valid value present in the list. So I'm getting this error message:
08:23:54,312 INFO [lifecycle] WARNING: FacesMessage(s) have been enqueued, but may not have been displayed.
sourceId=form:foco[severity=(ERROR 2), summary=(form:foco: Validation Error: Value is not valid), detail=(form:foco: Validation Error: Value is not valid)]I suppose that JSF is comparing the new value of the field fSetorOrigem with the value
it has in the view state. As the value is different it is raising the error. That's
what I suppose. But am I not able the change the value in the postback? I've already
checked and the value is valid. It corresponds to a value that exists in the list.
I really need a solution to this problem as I'm stuck with this and can't proceed until
I find a solution to this. What I am doing wrong and how can I solve this?
Thank you very much.
Marcos

BalusC wrote:
It is comparing the selected value against the List<SelectItem> returned by getSetoresOrigem() as it is during the apply request values phase of the form submit request.Ok. That's what I supposed JSF was doing.
BalusC wrote:
If the selected value isn't in there, then you will get this error.I can understand this, but is this right? As I said, the old value isn't really there because I changed the list values to new ones. But the new value (the value of fSetorOrigem ) corresponds to a value that exist in the new list items, so a valid value. So JSF is not considering that I also changed the list, not just the value. It is comparing the new value with the old list, not the new one. Acting like this JSF is making the page looks like a static HTML page, not a dynamic one. If I can't change the list and the value, what's the point of that? In my point of view I'm not doing anything wrong, I'm not violating any JSF rules.
Marcos

Have a backing bean in request scope; need to access parameters sent to it

I have a request scope backing bean in my app, 'projectBean'. This has a property called 'id'.
/** in request scope in faces-config.xml */
projectBean {
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}There is another backing bean in session scope called 'projectListingBean', which has a dataTable that lists a bunch of projectBeans. In this 'projectListingBean', I can click on any row. That row, when clicked initializes a 'id' parameter, which is then passed to the new 'projectBean'. 'projectBean' then initializes itself based on the id.
In the jsp page backed by 'projectBean', I also have a link to download something specific to that 'projectBean'. Naturally enough, I have a commandlink with actionBinding to a method in my 'projectBean', downloadXXXAction().
The problem arises because the downloadXXX() method relies on a 'id'. Remember, this id was orinigally set 2 requests back from the datatable. Since the page backed by 'projectBean' is in request scope, the id is lost, and my method call doesn't work. I tried changing the scope of 'projectBean' to session, but JSF complains that I already setting the 'id' property as a param, I can't set the whole managed bean to something 'higher' like session.
Of course, the ideal fix to this probelm would be the ability to have beans in page scope, but what other ways (hacks??) are there to get around this?

Hi, I'm posting some code snippets if it helps with understanding the problem.
faces-config.xml:

<managed-bean>
     <managed-bean-name>projectListingBean</managed-bean-name>
     <managed-bean-scope>session</managed-bean-scope>
     <managed-property>
          <property-name>projectBeans</property-name>
          <property-class>java.util.List</property-class>
          <list-entries>
               <value-class>
                    com.sun.sleuth.omcmweb.view.bean.ProjectBean
               </value-class>
          </list-entries>
     </managed-property>
</managed-bean>

<managed-bean>
     <managed-bean-name>projectBean</managed-bean-name>
     <managed-bean-class>
     </managed-bean-class>
     <managed-bean-scope>request</managed-bean-scope>
     <managed-property>
          <property-name>projectId</property-name>
          <property-class>java.lang.String</property-class>
          <value>#{param.projectId}</value>
     </managed-property>
</managed-bean>projectlsting.jsp (page backed by projectListingBean)
<h:dataTable value="#{projectListingBean.projectBeans}"
     var="projectBean" ...>
     <h:column>
          <f:facet name="header">
          </f:facet>
          <h:commandLink action="#{projectListingBean.viewProjectSUmmary}">
               <h:outputText value="#{projectBean.projectId}" />
               <f:param name="projectId" value="#{projectBean.projectId}" />
          </h:commandLink>
     </h:column>
</h:dataTable>projectsummary.jsp (page backed by request scoped projectBean)
<h:commandLink action="#{projectBean.assessmentAction}" value="..." />
...Flow:
projectlisting.jsp (projectListingBean - session) -param id passed->
projectsummary.jsp (projectBean - request) -commandLink clicked and id lost-->
projectSummary.jsp (projectBean - request)

Creation of a Managed Bean in Request Scope?

Is there an easy way to create an instance of a managed bean (configured in faces-config.xml) that was configured to be in the Request scope?
If a JSP refers to it by id, then it will be there.
However, when the JSP does not refer to it, it will not be in the request. I find I need to generate it anyway to use it from within another Managed Bean. I can extract out the faces-config information from the application map (available from FacesContext) and build it manually -- but this ties me to a particular JSF implementation (and probably version, too).
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BTW -- I mean to do this from within Java code (not jsp), and the page being rendered does not have a direct reference to the request-scoped managed bean via value binding.

Command Link in the af:table Component can not Work in the Request Scope

Actually, the problem is that when we click on the command link, the action method #{overview.goToLinkAction} is not triggered.
Here is the codes of action method "goToLinkAction" on the backing bean:
public String goToLinkAction() {
String linkString = (String) AdfFacesContext.getCurrentInstance()
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System.out.println("Link String is: " + linkString);
return "";
The data object list "listOfTransefer" for af:table is composed first time when the page is initialized.
public void onPageLoad() {
this.listOfTransfers = composeListOfTransfers();
But when the commandlink or commandbutton is clicked to pose the form, this onPageLoad method is ignored by using PagePhaseListener:
public void beforePhase(PagePhaseEvent event) {
FacesPageLifecycleContext ctx =
(FacesPageLifecycleContext)event.getLifecycleContext();
if (event.getPhaseId() == Lifecycle.PREPARE_MODEL_ID && needReload()) {
bc = ctx.getBindingContainer();
onPageLoad();
bc = null;
public final boolean needReload() {
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return Boolean.TRUE;
else
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protected boolean isPostback() {
return Boolean.TRUE.equals(resolveExpression("#{adfFacesContext.postback}"));
That means the method "onPageLoad()" may not be invoked when the commandlink is clicked.
Is there any way to resolve this problem without changing the scope of the backing bean to "session"?
Your response will be very helpful for us.
Thanks

Hi,
if you implicitly say that this works if the managed bean is in session scope then the problems seems to me that one of your evaluation criterias is reset in the request scope, which I think most likely is the needReload() method. Did you add debug statements to the methods to see where exactly it gets stuck?
Frank

Work around for request scope for Listitems-working

Hi finally I got some work around solution for Listitems working with request scope, if any suggesion welcome, below is the small code of jsp and bean.
<h:selectOneMenu id="ownerListMenu" value="#{pc_trackingSearchPage.trackingSearchPageBean.selectedOwner}">
                                        <f:selectItems value="#{pc_trackingSearchPage.trackingSearchPageBean.ownerList}" />
                                   </h:selectOneMenu>
I used onPageLoadBegin() and onPagePost(),
first on PageLoad - I am loading the List from DB, its displaying perfect.,
than on pagePost -> I am setting the value ->ownerList.add(new SelectItem(getOwnerListMenu().getSubmittedValue().toString(),getOwnerListMenu().getSubmittedValue().toString()));
------->here is the getOwnerListMenu method.
     public HtmlSelectOneMenu getOwnerListMenu() {
          if (ownerListMenu == null) {
               ownerListMenu =
                    (HtmlSelectOneMenu) findComponentInRoot("ownerListMenu");
          return ownerListMenu;
so this way the List will not be empty what ever the user selectes it will be their, as i am setting key and values as same, so in submit method,
i am getting the selected keys and going back to backend getting results displaying on other page,
--->this will work only if they don't need the list , if they want to display the list again, they have to load freshelly.
I hope it will give some solution for request scope, if the data is huge and not to save on the session for navigation purpose.
suggestions welcome.
Thanks
srikanth
Message was edited by:
srikanthg

Apperently iTunes 11 is not affected (Apple stil makes iTunes11 for the 14 yr old Microsoft XP OS, but not for anything PPCs can run. Go figure)
"Next door" to Steve was metaphoric, he lived in Los Altos, about 15 miles away, but he cast a big shadow!
On 9.2.1/10.4.11 differences, some time in the past someone selected 'save file' and checked the box 'don't ask again' on your computers dialog box. That's why you're not given a choice wih the file downloads. I would think that selection should be able to be reversed.
iTunes 9.2.1/OS10.4.11 puts those downloaded URLs into the Music Libary of iTunes, no matter if it's opened directly, or you click on the file on your desktop. You can create a new playlist, highlight the selection in the Music Libary, and drag it to your new playlist to keep alll the steaming URLs together. NOTE, this only creates an alias, the URL copied by iTunes must remain in the Music Libary. You can then delete the the files on the desktop, if you want. I did multiple stations this way in 9.2.1, they all show in either the new playlist created, or in the Music Libary, and remain after the desktop files are deleted and trash emptied.
You can switch sations by double clicking them. Another note, all the URLs were all from vtune.
I hope this helps.
PS, I forgot how clunky Tiger is compared to Leopard...

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     at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:349)
     at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:509)
     at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:413)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:778)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:317)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:790)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.HttpRequestHandler.run(HttpRequestHandler.java:270)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.HttpRequestHandler.run(HttpRequestHandler.java:112)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:192)
     at java.lang.Thread.run(Thread.java:534)
why?
Please everyone tell me if you can,thanks a lot.

I believe, if it is the first time you are referring to the bean, you must use the class attribute rather than type:
<jsp:useBean id="collectionBean" scope="request" class="view.CollectionBean"/>The type is used to change how the bean is referenced, for instance, in regular Java you might do this:
// The Type                 The Class
java.util.List myList = new java.util.ArrayList();In use bean you would do this:
<jsp:useBean id="myList" class="java.util.ArrayList" type="java.util.List"/>

Using a request scope object in a javascript function

Hello,
is there a way to obtain a reference to a request scope attribute in a javascript function?
or after using <jsp:useBean id="myBean" ...>, how do I pass the "myBean" object to a javascript fuction?
Thanks for any help.
E-

ok, thanks...this is working for a string property of a bean... but I get an 'invalid character' error when I want to create an actual reference to the bean object itself.
here is the jist of what I need to get working... myBean has a property 'listItems' that is a Vector of listBeans.
function buildList() {
var myBean = <%=request.getAttribute("mybean")%> ;
// get referenence to the Vector property listItems
var list = myBean.getListItems();
// now I want to iterate the list and use the properties of the list beans
for (x = 0 ; x < list.size() ; x++ ) {
var listBean = list[x];
var foo = listBean.getFoo();
// need to use foo to populate a hierarchical list
can I do this in JavaScript??? do I need to cast the classes to the variables?

Partial page refresh in REQUEST scope

Hi,
I was going through the various example of partialTrigger.
But in I am unable to find the example in where we can use the partialTrigger with having our backing bean into request scope. means Can we do partial page refresh without keeping our backing bean into session scope?
Can we do partial page refresh across different fragments (different jsf fragment - jsff ) with having the our backing bean in a request scope?
Is there any way that we can achieve this?
Please can any one provide some input or help on this?
Thank you in advance.
- Kumar

Hi,
Can we do partial page refresh without keeping our backing bean into session scope?
Yes, don't know how you get to this idea that you couldn't. You can use ADFFacesContext.getCurrentInstance().addPartialTarget(component)
Can we do partial page refresh across different fragments (different jsf fragment - jsff ) with having the our backing bean in a request scope?
You are posting a JDeveloper 11 question without saying it first. Also note that there is a JDeveloper 11 forum here on OTN. To answer the question, I don't think that you can do this and that instead you would use a region and contextual events to refresh the area
Frank

Communicating between beans in request scope

I have list.jsp that has a table of items with a link to edit each item like so
<h:dataTable value="#{list.model}" var="curItem">
    <h:commandLink actionListener="#{item.doActionEdit}" action="edit">
      <h:outputText value="#{curItem.id}"/>
      <f:param name="id" value="#{curItem.id}"/>
    </h:commandLink>
</h:dataTable>edit is map to item.jsp
when i click on the link the item bean gets called and doActionEdit sets up the id and fetches data from db but then the bean gets recreated (from scratch and all data is lots id is unset) and it loads item.jsp with and empty bean.
This only happens when item bean is in request scope, however when it is in session scope it works fine, which brings the question; how can I pass objects to a bean that is in the request scope?
I have tries to map id of item in faces-config.xml with #{param.id} which works fine if id is passed but fails with a npe when item.jsp loads without id (say I want to create a new item.)
Please advise me what is the best approach to communicate between beans in request scope, so it will work with and without id being passed.

here is doActionEdit, basicly it gets the id param and then calls setId which tries to load data from db if id is >0 if that fails or id is <=0 it creates new data object instead.
when the item bean is in session scope the constructor is called once but if the scope is request it is called twice (first time doActionEdit is called after constructor but the 2nd time only constructor is called and the itemData is empty.
     public void doActionEdit(final ActionEvent event) {
                int id = 0;
          try {
               id = Integer.parseInt(FacesUtil.getParameter("id"));
          } catch (Exception e) {
               e.printStackTrace();
          setId(id);
private ItemData data = null;
     public void setId(final int id) {
          if (id > 0) {
               data = DB.getItemData(id); //load data from db
               if (data == null) {
                    data=new Data();
          else {
               data=new Data();
     public Item() {
          data=new Data();
          System.out.println("Loading Item class");
     }

Forwarding a variabe in request scope

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