Session scope and request scope

Hi,
I've a manage bean in session scope and within this bean I've a reference of another
object (class person) . My question is, do i have to register this class in my faces-config-xml and if yes which scope should it have? session or request?
Or it isn't necessary to register it?
thanks
class MymanageBean{
private Person myPerson;
}

helllo,
can someone tell me what the line in the preceding coed means?
<meta http-equiv="refresh" content="<%= session.getMaxInactiveInterval() %>;url=login.jsp">
-- session_expiry_test.jsp --
<%@page contentType="text/html"%>
<%@page pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
   "http://www.w3.org/TR/html4/loose.dtd">
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>JSP Page</title>
        <meta http-equiv="refresh" content="<%= session.getMaxInactiveInterval() %>;url=dummy_login.jsp">
    </head>
    <body>
    <h1>Welcome, dude with a session!</h1>
    Your session will expire in <%= session.getMaxInactiveInterval() %> seconds
    at which time your browser will be redirected to the login page and any
    and all unsaved changes will be lost.
    <br>
    Thank you for your cooperation!
    </body>
</html>

Similar Messages

Difference Between BackingBean Scope and Request Scope in Manged Beans

Hi,
This is going to sound really silly, me asking this question after working for over 6 months in ADF, but could anybody please give me some differences between backing bean scope and request scope. I've looked at the official Oracle documentation, and I'd be really grateful if anybody could please dumb it down a bit for me.-:)
Thanks,
Debojit

If you make a declarative component and put it on a page more than once.
Just like you can put multiple instances of the af:inputText component on a page, you can put multiple instances of declarative components on a page.

Wht isifference btw content scope and valuation scope in oracle inventory

hi to all
what is differnce btween content scope and valuation scope in cycle count form . both have organization and sub inventory check box can any body tell difference btween the both . please help me...

The content scope defines which item you will consider.
If you select Subinventory, only those items that reside in that subinventory are considered.
If you select organization, then all items in that org are considered.
The valuation scope determines how should the selected items be ranked.
If your Content scope is organization, then the valuation scope must be organization too.
But if your content scope is subinventory, then the valuation scope can either be subinventory or organization.
Assume you have following onhand
item/onhand      Subinv       Entire org
Item1            5               50
Item2           10               30Assume your content scope = subinventory.
If you select valuation = subinventory, then the items will be ranked according to the onhand of the items in THAT subinventory. So Item1 will get a lower ranking that item2.
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Null value in Session vars and request.getParameter

We're migrating our application from iPlanet.
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          loadShortcutIcon(13,100);
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          in iPlanet, when the parameter "imageName" is not in the URL, the javascript
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          Matt


Hi,
the URL parameter is added just for the request to the page. When you press the command button then you issue a new request that does not have a URL parameter added. To work around this, you can use a PhaseListener that stores the URL request parameter in the session for later use
Frank

Problem with Commit button When Backing bean is in Request Scope...

HI Everybody,
I have a Backing Bean in request scope having over 1000 lines of code, And in my JSPX page I have a table binding with a view object and At run time when user select the row in table and click the edit button so user will be able to edit that selected row in the same table at run time.. but the problem is : when the user enters some data in the Editable inputTexts and then clicks save(Commit), then the save button doesn't work..but when i delete any selected row and then press save then it is working fine..
And to test it in Session scope i made another sample page where every thing is working very fine..
Now i want to know What is the difference between Session scope and request scope bean...
And is there any solution to Save editable input text in Request scope?.
Also want to know that is it safe to set the scope of my main bean class to session scope without effecting the current running functionality? which is having over 1000 lines of code and lot of component has been placed...
Please help me to resolve this problem...
Thanks in Advance to all of you
Fizzz..

Hi Frank...
In my code i used almost same logic as Andrejus Baranovskis has explained in his Editable Table example...
You can refer that example to see what problem I'm facing...
http://andrejusb.blogspot.com/2007/04/create-edit-and-delete-operations-in.html
The Bean Scope in this Example is Session scope...Save button is working fine...
But as i Change the bean scope to Request scope then Save button is not working for Edit but it is working for Delete Action very well..
I want that save button should work also for Edit action in Request Scope..
Please Make me understand that why it is happened like that..
and help me to find the solution..
and Also if you have a better document to Explain the life cycle of Application in Different Bean Scope...So please provide me that Doc to me...
It would be a great help for me to understand the concept of session...
Thanks Frank
Fizzz...

How to handle Valuechange events, when page bean is in request scope

Hello balusc and forum mates,
I want to know is there any good way to handle ValueChangeEvents events, when the page's bean in request scope.
My problem is, I have a page having more than 1 value change event so How can I maintain page values at backing bean. My bean is request scope, I can't change to session scope.
Please I really need it.

Hi Frank...
In my code i used almost same logic as Andrejus Baranovskis has explained in his Editable Table example...
You can refer that example to see what problem I'm facing...
http://andrejusb.blogspot.com/2007/04/create-edit-and-delete-operations-in.html
The Bean Scope in this Example is Session scope...Save button is working fine...
But as i Change the bean scope to Request scope then Save button is not working for Edit but it is working for Delete Action very well..
I want that save button should work also for Edit action in Request Scope..
Please Make me understand that why it is happened like that..
and help me to find the solution..
and Also if you have a better document to Explain the life cycle of Application in Different Bean Scope...So please provide me that Doc to me...
It would be a great help for me to understand the concept of session...
Thanks Frank
Fizzz...

Best Practices: request scope + forward vs. session scope + redirect

Hi,
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:
1) Each item that users can update has its own session object that is created and destroyed as necessary. Each session object has a bunch of get and set methods. The annoying part is creating and destroying all the different session objects, but I can redirect the user to a readable URL each time.
2) Each item uses the request scope, which means I don't have to take care of different session objects, but I have to forward the user from a servlet to a JSP file, and the URL becomes meaningless to the user (since there was no redirect).
Is one way clearly better, or more widely used?
Thanks.

Having a bookmarkable url will be a good thing in the users point of view

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"/>
</af:column>
<f:facet name="detailStamp">
<af:panelFormLayout rows="4" labelWidth="33%" fieldWidth="67%" inlineStyle="width:795px" id="pfl1" labelAlignment="start" >
<af:group id="g1">
<af:panelLabelAndMessage id="plamNumber" label="Number" for="number">
<af:outputText value="#{row.address.number}" id="number"/>
</af:panelLabelAndMessage>
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

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 {
    id               // set by the param from the previous page
    downloadAction() // activated by commandlink, depends on id
}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)

Passing bean as attribute to servlet in request scope

Hello,
I want to pass a bean from a jsp to my controller servlet. As I understood, as long as I can give the bean 'request' scope, then I should be abble to access the bean, as an attribute in the doPost / doGet method of my servlet. However, when I try to get the bean in the servlet, its always null.
I am aware that request scope beans don't loose their values when passing to other JSP's , but what about passing to servlets?
I dont want to use a session scoped bean as I believe this should be possible with a request scoped variable.
<%-- vwLogon.jsp --%>
<jsp:useBean id="viewBean" class="com.alto.common.ViewBean" scope="request">
     <jsp:setProperty name="viewBean" property="viewName" value="/vwLogon"/>
</jsp:useBean>
<html>
<body>
<h2>Enter Name</h2>
<form method="GET" action="controller">
     Enter your name:<input type="text" name="vwLogon_User_txt" value=""/>
     Enter your password:<input type="secret" name="vwLogon_Password_txt" value=""/>
<input type="submit" name="vwLogon_Logon_Btn" value="Logon"/>
</form>
</body>
</html>
------------------------------- controller servlet
public void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
ViewBean viewBean = (ViewBean)req.getAttribute("viewBean");
String strURL = new String("");
if (!(viewBean==null)) {
strURL = viewBean.getViewName();

A request/response pair is one communication between the client browser and the web server. A submit form action generates a new request.
In this instance you have two requests:
1 - load login page
2 - submit login page
The point of being able to give a bean request scope, is so that you can use jsp:forward, or jsp:include to pass on the request, and the bean as well.
In your case, a session bean is probably called for, as you have 2 request/responses in your session.
Hope this clears things up a little.
Cheers,
evnafets

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...

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");
     }

Storing Objects in Request Scope

Hello,
I'm trying to pass an object in the request scope between a JSPDynPage and the associated JSP however the object is always null. If I store it in the session I am able to retrieve it.
Could anyone assist in how to do this?
My code is as follows, thanks and regards.
public class MyClass extends PageProcessorComponent {
private String redirectToPage = "";
private static final String INITAL_PAGE = "initialpage.jsp";
private static final String SECONDARY_PAGE = "secondarypage.jsp";
private static final String BEAN_ALIAS = "myBean";
public void doProcessBeforeOutput() throws PageException {
    if (redirectToPage == null || redirectToPage.equals("")) {
      this.setJspName(INITAL_PAGE);
    } else {
      this.setJspName(redirectToPage);
public void onMyButtonEvent (Event event) {
    redirectToPage = SECONDARY_PAGE;
    MyBeanClass myBean = new MyBeanClass();
    IPortalComponentRequest componentRequest = (IPortalComponentRequest)getRequest();
    componentRequest.putValue(BEAN_ALIAS, myBean);
secondarypage.jsp:
<%@ page session = "true"%>
<%@ taglib uri="tagLib" prefix="hbj" %>
<jsp:useBean id="myBean" scope="request" class="MyBeanClass " />
<hbj:content id="myContent">
<hbj:page title="myTitle">
   <hbj:form id="myForm">
     <% if (myBean != null) {
          out.println("null");
        } else {
          out.println("not null");
     %>
   </hbj:form>
</hbj:page>
</hbj:content>
output on the page is always "null" ??

Hi,
Thanks for your posts... the null logic was actually a typo.
I've solved the problem myself - basically I think the <jsp:useBean doesn't work as I expect it (that is automatically obtain the handle to the bean):
MyDynPage.java:
package com.my;
import com.sapportals.htmlb.*;
import com.sapportals.htmlb.enum.*;
import com.sapportals.htmlb.event.*;
import com.sapportals.htmlb.page.*;
import com.sapportals.portal.htmlb.page.*;
import com.sapportals.portal.prt.component.*;
public class MyDynPage extends PageProcessorComponent {
public DynPage getPage(){
    return new MyDynPageDynPage();
public static class MyDynPageDynPage extends JSPDynPage{
    public void doInitialization(){
    public void doProcessAfterInput() throws PageException {
    public void doProcessBeforeOutput() throws PageException {
          IPortalComponentRequest componentRequest = (IPortalComponentRequest)getRequest();
          componentRequest.putValue("myRequestParam", "My Request Param Value");
          MyBean myBean = new MyBean("My Bean Title Value");
          componentRequest.putValue("myBean", myBean);
         this.setJspName("myJSP.jsp");
MyBean.java:
package com.my;
import java.io.Serializable;
public class MyBean implements Serializable {
     private String txtTitle;
     //setters
     public void setTxtTitle(String txtTitle) { this.txtTitle = txtTitle; }
     //getters
     public String getTxtTitle() { return this.txtTitle; }
     public MyBean(String txtTitle) { //constructor
          this.txtTitle = txtTitle;
myJSP.jsp:
<%@ page session = "true"%>
<%@ taglib uri="tagLib" prefix="hbj" %>
<jsp:useBean id="myBean" scope="request" class="com.my.MyBean" />
<hbj:content id="myContext" >
<hbj:page title="PageTitle">
   <hbj:form id="myFormId" >
    <%
           String myRequestParam = (String)componentRequest.getValue("myRequestParam");
          out.println("myRequestParam: " + myRequestParam + "<br>");
          if (myBean == null) {
               out.println("myBean is null<br>");
          } else {
               out.println("myBean is not null<br>");
               out.println(myBean.getTxtTitle() + "<br>");
          com.my.MyBean myOtherBean = (com.my.MyBean) componentRequest.getValue("myBean");
          if (myOtherBean == null) {
               out.println("myOtherBean is null");
          } else {
               out.println("myOtherBean is not null<br>");
               out.println(myOtherBean.getTxtTitle() + "<br>");
    %>
   </hbj:form>
</hbj:page>
</hbj:content>
The output is:
myRequestParam: My Request Param Value
<b>myBean is null</b>
myOtherBean is not null
My Bean Title Value
It appears that you can save objects in the request scope however you need to manually retrieve them. I'm pretty sure that this is not the case in other J2EE servers as the <jsp:useBean tag should imply that I want the bean retrieved from the scope automatically or created if it's null.
However the use of the <jsp:useBean appears to work correctly/as expected when using the session scope.
Thanks for your assistance.
DSR

How to persist a data in request scope

Hi All...
I am using JDeveloper Studio Edition Version 11.1.1.0.2.In my managed bean (backing bean scope), I have a variable say " private loginname;" with a global scope and corresponding getter and setter methods inside the backing bean.How can I persist my data in request scope not using a session variable.
Thanks in advance
Dinil Mithra

Hi all,
I need to access the data in the request scope( Not in session scope ). ie, after the command button's action or action listener ,I loose the persistence of my variable.But the same time persistence of the textfield exists.I need to implement the persistence like textbox or ADF component
Thanks for your response
Dinil Mithra
Edited by: Dinil Mithra on May 21, 2009 1:25 AM

Session scope and request scope

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