Jsf session scope variables

Hi All,
How to set a variable which should be available throughout the session, I dont want to use session scoped managed beans for this.
Using the following method is not working
FacesContext.getCurrentInstance().getExternalContext().getRequestMap().put("variableName","value");is there any other way to set session scoped variables ?

Got it working
FacesContext.getCurrentInstance().getExternalContext().getSessionMap().put("variableName","value");This will make the variable session scoped
Regards,
Sai Krishna

Similar Messages

Session scope variables and weird behaviour of AdfContext()

Hello,
what is the best method and correct API to create a session scope variable?
I am currently using ADFContext().getCurrent().getSessionScope().get()/put(), but it looks like it has some problems: for some unkown reasons I loose the variable, that is get() returns null when called from a method of a (overridden)ViewRowImpl. Why does this happen?
Thanks you in advance

There are a couple of ways you can set values on a sessions scope but I would have to question if you really need a scope as high as session to accomplish what you want to do. At any rate, you should be able to store the value using the method you described but you could also try setting it using EL by using the setExpressionValue and resolveExpression methods in JSFUtils.java (you can find this in the latest fusion demo application). JSFUtils also has a getFromSession and storeOnSession that you could try.
With all that said I don't think it is good practice to access scope variables from your model layer. You should write your method in the ViewRowImpl class to accept the value as a method parameter and then pass the value in through the binding layer or when invoking the method from your bean class.

Session-scope variable for JSP page used in a frame

Hi,
I don't know if there's a way to do this at the same time:
(1)- assign session scope to a variable (in order to be able to retrieve recurrently the previous value each time the JSP is called);
(2)- set its visibility in a way that it could be accessed only by the page that defines it. The JSP is used in a frameset along with an other JSP that can potentially define identical session-scoped variable (You understand why I want to keep them separate)
session.setAttribute():
seems not to be the thing I need
pageContext.setAttribute():
with SESSION_SCOPE, it behaves the same way as session.setAttribute(). with PAGE_SCOPE, condition (1) can't be satisfied.
Does anybody have an idea ?
Thanx in advance.

I can see that you will not want to maintain two different files for every possible page on the site!
It may be possible to do something like <frameset rows="*" cols="50%,*">
<frame name="content1" src="file.jsp?frame=one" >
<frame name="content2" src="file.jsp?frame=two" >
</frameset>and then in the jsp<%
String frame=request.getParameter("frame");
session.setAttribute(frame+"AttributeName",attributeValue);
%>This will set up two session attributes - "oneAttributeName" and "twoAttributeName". Depending on how many variables you have, this may prove just as difficult to maintain.
You may end up having to simply pass url parameters between pages to maintain state within the individual frames, which is far from elegant also.
I am interested in how you end up solving this one.

Access session scope variables from a filter

I have a filter I am using to check if 2 people are loged in with the same user name.
When my web app loads I store the user name in a class that has session scope.
Is there a way for me to access this class from the Filter class?
How do I access the session instance from this class?
How do I pass parameters to the Filter class?
Thank you,
Al

http://forum.java.sun.com/thread.jspa?threadID=5122925&tstart=0

Must command link parameter variable SESSION Scope??

I add a EJB Session Bean Method to my page which returns an array:
public Province[] getProvinces();
When you place the Session Bean to the page, it automatically creates a REQUEST SCOPE VARIABLE called "provinceRemoteGetProvincesResultBean" in the type of Province array. And it automatically creates a Data Table to display the results.
Up to this point every thing's cool!! I can call the method properly, get the results and display without any problem.
However when I try to create a COMMAND LINK to one of the columns of the TABLE (e.g. Province has a NAME column) I have a problem:
<h:commandLink styleClass="commandLink" id="lnkName" action="#{pc_ProvinceManagement.doLnkNameAction}">
<h:outputText id="otxName" value="#{varprovinceRemoteGetProvincesResultBean.name}" styleClass="outputText">
</h:outputText>
<f:param name="provinceId" value="#varprovinceRemoteGetProvincesResultBean.id}"></f:param>
</h:commandLink>
The problem is that this "provinceRemoteGetProvincesResultBean" is REQUEST scope and Command Link does not work with REQUEST Scope variables!!!
I had similar examples before, when I used the command link with a REQUEST SCOPE variable, it didn't work. When I use it with a SESSION Scope variable it works.
In this particular case, I cannot make the Province[] a SESSION SCOPE variable, because it's not a class!!! Therefore I need to create a new class containing a Province[] and make that class a SESSION SCOPE variable, which makes things quite complicated!!
IS IT TRUE THAT COMMAND LINK PARAMETERS MUST BE SESSION SCOPE?????

Line 4: <f:param name="provinceId" value="#varprovinceRemoteGetProvincesResultBean.id}"></f:param>
value="#varpro... >>> value="#{varpro...

Accessing Session scope attributes in ADF BC

Is there any groovy script for accessing session scope variables in ADF BC?

Let me put forward my use case:
My VO's in my application has a bind variable which is bound to currently logged in user (adf.context.securityContext.userName). Also my application has couple of AM's
But now i'm adding complexity to my application where i'm implementing super user concept, a super user can login to the application, select a username (say 'user1'), and see the application as if 'user1' is logged in.
So i'm trying to solve the problem by setting a session attribute for the user ('user1') and make it use in VO's
Do you guys have any better solution to this problem?

Seting a JSp variable to session scope in JSp page itself

Hi,
I have code like this
<HTML>
     <HEAD>
          <TITLE>Change Password</TITLE>
          <LINK REL ="stylesheet" TYPE="text/css" HREF="stylesheet/vclinical.css" TITLE="Style">
</HEAD>
<BODY>
<form name="form">
<select name="ss" onChange="this.form.qq.value=options[selectedIndex].value;getit()">
<option value=1>ss1</option>
<option value=2>ss2</option>
</select>
<input type="text" name="qq" value="">
<%
String asd=request.getParameter("qq");
session.setAttribute("Stored", asd);
System.out.println("value is"+asd);
%>
</form>
</BODY>
</HTML>
here i want to set value of a JSP variable qq to session scope and here i am not invoking any servlet i want value of qq in next JSP page i am not submitting the page so how i can handle this. this code does not work so please tell me how to do this i am using struts frame work

if you are using the struts framework, then you can make an ActionForm with getters and setters for the stuff that you are writing in the JSP i mean the radio buttons and text boxes etc
from that action form you can get the values any time any where
you just need to enter some thing like below in the struts-config.xml file
<form-bean name="the action form name" type="package name.Actionform name" />
<action path="/controller " type="package name.controller name" name="Action form name" scope="session">
you can either put the action form in request scope or session scope

How long is the life time of process scope variable ?

Hi All,
How long is the life time of process scope variable befoer it expires ?
Is it the same with the life time of session scope ?
How can we set the value in OAS when deployment ?
Thank you,
xtanto

Hi,
http://www.oracle.com/technology/products/jdev/htdocs/partners/addins/exchange/jsf/doc/devguide/communicatingBetweenPages.html
" Finally, processScope never empties itself; the only way to clear processScope is to manually force it to clear:
AdfFacesContext afContext = AdfFacesContext.getCurrentInstance();
afContext.getProcessScope().clear();
Otherwise the variable lives for the duration of the window process. The referenced document above also shows how to set a variable to process scope
Frank

Can we access the session scoped variable by simply using its name

The Java EE 6 Tutorial contains a "Duke's Bookstore Case Study Example”. I could not understand following statements of this case study:
*bookdetails.xhtml*
{code}
<h:outputText value="#{selected.title}"/>
{code}
*BookstoreBean.java*
{code}
public String details() {
context()
.getExternalContext()
.getSessionMap()
.put(
"selected",
getFeatured());
return ("bookdetails");
{code}
I want to know can we access the session scoped variable in bookdetails.xhtml by simply using its name as done above?

It is basic Expression Language (EL) functionality, it isn't even specific to JSF. And it isn't specific to the session scope either, you can put beans in any scope (page, request, session, application, flash, conversation, whatever custom scope you create) and reference it using EL by only its name. The thing that you have to take care of is that the bean lives in SOME scope, which can be achieved using JSF specific annotations or configuration files, through CDI or by manually putting the bean in a specific scope through Java code. It's flexible, which is the nature of the Java platform.

Hibernate-JSF session.get problem

Hello,
I use Hibernate+JSF.
I open Hibernate session for each request and close it when the request is finished.
For each logged user I keep userId, companyId and several more Ids.
I have a userSession instance containing this data as well as several methods to get Hibernate objects related with user. For example, in order to get company object:
public Company getActiveCompany()
    CompanyDAO companyDAO = new CompanyDAO();
    Company activeCompany = companyDAO.getCompany(activeCompanyId);
    return activeCompany;
}The problem is araised in screen in which I show companies data.
It seems like Hibernate has a problem of loading the same object more than once.
For example, in Companies screen, the active company of a User is shown as well as a dropdown filled with companies. The dropdown has a converter named: CompanyConverter which returns a Company object for a given company id.
When switching Company on the dropdown a "valueChangeActiveCompany" event is triggered and the new selected Company should be set to the User. The problem is that the Company object was already loaded to show the active Company on the top of the screen, and the data that is extracted from the converter seems to be empty . . .
The code of the valueChanged is:
public void valueChangeActiveCompany(ValueChangeEvent event)
    activeCompany = (Company)event.getNewValue(); // Here the object is empty . . .
    log.info("Setting new Active Company: " + activeCompany +
                                        " for user: " + userSession.getUser());
    try
      userSession.setActiveCompany(activeCompany);
    catch (HibernateException ex)
      FacesUtil.addErrorMessage("setup.company.view.error.changeCompany");
} This problem causes the value of the new active company not to be set, therefore it is not possible to switch between active Companies . . .
Why Hibernate behaves weird when loading an object for the second time on the same session ?
Is there a good way of solving this problem ?
Guy.

hi
i had similar problem.
i solved it but i dont know whether its the correct solution.
i placed the magaed bean in the session scope
in the first page i add a new variable and stored that value in the avtionlistener method. when i click on back button in the 3rd page i get the value which i stored in the first page and display the data.
i hope this is ur problem. if this is the problem let me know i can send u the code snippet
thnaks
sreedevi

How to get a parameter from each request in a session scope BackingBean

While calling my JSF page, I pass an id as parameter in the URL, and in the Backing bean I retrieve it from the request.
On each request I need to get the id and populate the page accordingly.
But I am forced to create my Backing Bean in session scope b'cos otherwise ValueChangeListener method does not work properly.
So where and how do I get the id on each request?
Pls. help

What you can do is create it in the request scope like this:
<managed-bean>
      <managed-bean-name>personBean</managed-bean-name>
      <managed-bean-class>
        com.PersonBean
      </managed-bean-class>
      <managed-bean-scope>request</managed-bean-scope>
       <managed-property>
             <property-name>id</property-name>
             <property-class>java.lang.Long</property-class>
          <value>#{param.id}</value>
      </managed-property>
</managed-bean>And then in the page use a hidden field to set the id in case of a postback (validation error):
<h:inputHidden id="id" value="#{personBean.id}"/>Does that help you?
Thomas

Session scope managed bean is not instantiating?

We have the need to use a session bean (rather than pageFlowScope) in our application. But it looks like the session beans are not being instantiated at run time like other beans are. I created a simple test case to verify. One bean, named "MySessionBean", defined in the task flow as Session scope, then referenced in a view with an input text box, value: #{sessionScope.MySessionBean.value1}. When I run the application, I just get PropertyNotFoundException, Target Unreachable, 'MySessionBean' returned null.
If I simply change the bean to use pageFlowScope, everything works fine.   I have debug code in the bean constructor, and it never gets called.   Is there some other step I am missing to have ADF instantiate the session bean?

No luck, I tried it in both adfc-config.xml, and faces-config.xml. I also tried moving the call to my view, from my bounded taskflow, into the adfc-config unbounded task flow, and then I ran that instead. Still got the same error.    Here is my code from the the last round of tests with the view called in the main adfc-config.xml unbounded taskflow:
adfc-config.xml:
<?xml version="1.0" encoding="windows-1252" ?>
<adfc-config xmlns="http://xmlns.oracle.com/adf/controller" version="1.2">
      <view id="testView">
            <page>/testView.jspx</page>
      </view>
      <managed-bean id="__2">
      <managed-bean-name id="__5">MySessionBean</managed-bean-name>
      <managed-bean-class id="__4">test.MySessionBean</managed-bean-class>
      <managed-bean-scope id="__3">session</managed-bean-scope>
    </managed-bean>
</adfc-config>
testView.jspx:
<?xml version='1.0' encoding='UTF-8'?>
<jsp:root xmlns:jsp="http://java.sun.com/JSP/Page" version="2.1"
          xmlns:f="http://java.sun.com/jsf/core"
          xmlns:h="http://java.sun.com/jsf/html"
          xmlns:af="http://xmlns.oracle.com/adf/faces/rich">
<jsp:directive.page contentType="text/html;charset=UTF-8"/>
<f:view>
    <af:document id="d1">
      <af:form id="f1">
        <af:inputText label="Label 1" id="it1"
                      value="#{sessionScope.MySessionBean.value1}"/>
      </af:form>
    </af:document>
</f:view>
</jsp:root>
MySessionBean.java:
package test;
public class MySessionBean {
    private String value1="Hello World";
    public MySessionBean() {
        super();
    public void setValue1(String value1) {
        this.value1 = value1;
    public String getValue1() {
        return value1;

Is there an idiots guide to JSF and scope somewhere?

I am getting very confused with scope and JSF.
I have a page that just displays customer details (from CustomerBean extends Customer) with a button that should allow the user to change the customer details. Both pages use the same backing bean (is that recommended?).
customerDetail.jsp --> editCustomer.jsp
If I set the scope of CustomerBean to session, editCustomer sees the same customer as customerDetail. It seems to me that I shouldn't really be using session scope as I don't want a particular customer to hang around once I have finished with him. So what should I be doing?
Should customerBean be request scoped? If so how does editCustomer see it?
Or should I somehow destroy the session scoped customerBean when I have finished with it?
I also notice that some example jsps out there have a hidden field for the ID - should I simply look up the customer again from the database in editCustomer?
I also tried to add a <h:inputHidden value="#{customerBean}"/> but that broke my jsp.
I have bought and read the J2EE tutorial but I am still confused as to what the recommended way to drag the same Object through two jsp pages.
It's probably very simple but it's doing my head in ;-)
- David

Yeah, forming a model in your head to explain something can be painful, sometimes. This question has come up before, including where I work, and I've never really seen a comprehensive answer, so I'll just write one. :)
This is kind of a basic servlet concept, so I'll talk mostly about servlets. JSF is just flavor on top of this.
The lifetime of the request is: from the time the user hits "submit" until the time the response is fully rendered, whatever page that is.
So, you have a form the user has filled out and he/she hits "submit".
The HTTP POST request goes to the server (open port 80, write some "key: value" headers to satisfy the HTTP protocol requirements, followed by a stream of text that represents the users' form field values, wait for a response) which then proceeds to process it by parsing the incoming data and making a bunch of subroutine calls. The last set of subroutine calls basically involves a bunch of println() calls to write HTML into an output stream, which is the response the requesting browser is listening for. When that stream is done, the browser displays the html.
There's nothing that says the html that's displayed is the same as the html that originally held the form the user submitted. The first page is essentially garbage that somehow generated some form fields. The server could care less what it was, all it wants is the key=value pairs.
You could, if you were so inclined, code all those println()s yourself. That's straight servlet programming. It's totally under your control. You could code println( "<html><body>Hi, Mom!</body></html>"); and be done.
Or, you could write a JSP that, when compiled, turns into essentially a subroutine chock full o' println()s, and you could call that subroutine.
You do that with RequestDispatcher.forward(). It's just a subroutine call. (But don't do any more scribbling on the output stream after it returns, 'cause the stream's essentially been closed.)
It's all a big call tree with one thread of execution, single entry, single exit. One of the nice things about servlets is that the infrastructure makes available to you, in a contextual sorta way, the original request parameters plus whatever attributes you choose to attach to the request as your proceed w/your processing, kind of like charms on a charm bracelet (via ServletRequest.setAttribute()). (When I say "contextual", I mean the ServletRequest is passed in as a parameter to Servlet.service() so you can sling it around in your call tree.) Attributes you choose to attach while processing incoming form data are available later (for instance... in the subroutine that has all those println()s you so carefully coded up or allowed the JSP compiler to generate for you).
When the call tree is done (you've finally printed "</html>", marked the output stream "done" somehow and shipped all that HTML back out to the browser), the ServletRequest object that held the incoming form parameters plus whatever attribute cruft it accumulated is garbage collected. (I could write something poetic about Elysium and gamboling among daisies, but... nah.) So, the lifetime of that data associated w/the ServletRequest is the duration of that request-processing call tree.
JSF gives you a nice bunch of automatically-generated request attributes, corresponding to your request-scoped managed beans. It even very kindly transfers (via the value bindings) incoming form parameters into properties of beans which are attributed onto your ServletRequest, automagically.
So, if, in your JSP, you bind your form data to request-scoped bean properties (not the bean itself, but the bean's properties), those exact same bean properties will be visible on whatever JSP you eventually wind up on and it will be available to whatever intervening logic you code up ("Invoke Application" phase), and when the request is done, it all vanishes into thin air.
To be more specific to your question: yes, I believe it is recommended to have the same bean between pages. That's kind of the whole point. If you find yourself at the end of a request trying to destroy session data that was created at the beginning of that request, you should probably be using request scoping, not session.
I could be wrong, but I don't think you can bind an entire bean to an html element value. You bind bean properties. Of course, there's nothing to say that a bean property couldn't be... another bean!
In your particular case, I guess you have a bunch of display-only strings that come from your customer bean, plus a hidden "key" field somewhere. You could bind that hidden field to the customer.key property and Customer.setKey() would do whatever's necessary to get the rest of the data into the bean. That could be a d/b lookup or a map or array (cache) fetch. Or you could have a "current customer" in your session (that would have to be session-scoped, because you paint the detail screen w/one request and then paint the "edit" screen w/the same customer but in a different request). That "current customer" concept might cause you some problems later when you go multi-window or multi-frame in your webapp (truuuuuuuust me).
Also, I'm not sure why you need a CustomerBean separate from Customer. Can you just make Customer a bean and be done with it?
Holy cow, what an essay this turned out to be.
John Lusk.

Cant able to get the output while using session scope

Hi
I am using jdeveloper 11.1.1.5
As i posted in the previous post i had made some changes still i am not getting proper output
These are steps that i had followed for developing login page
1.I had created a TaskFlow in adfc-config.xml such that if the login is success it navigates to the other page pls verfiy the link
http://www.4shared.com/photo/5PNrf1hd/E028_2.html
2.I had also changed the scope to session in adfc-config.xml
http://www.4shared.com/photo/HtVVOw_B/E029.html
3.This was my Welcome.jspx code
<?xml version='1.0' encoding='UTF-8'?>
<jsp:root xmlns:jsp="http://java.sun.com/JSP/Page" version="2.1"
          xmlns:f="http://java.sun.com/jsf/core"
          xmlns:h="http://java.sun.com/jsf/html"
          xmlns:af="http://xmlns.oracle.com/adf/faces/rich">
<jsp:directive.page contentType="text/html;charset=UTF-8"/>
<f:view>
    <af:document id="d1" binding="#{sessionScope.backing_welcome.d1}">
      <af:form id="f1" binding="#{sessionScope.backing_welcome.f1}">
        <af:inputText label="UserName" binding="#{backing_welcome.it1}"
                      id="it1" value="#{sessionScope.backing_welcome.auser}"/>
        <af:inputText label="Password" binding="#{backing_welcome.it2}"
                      id="it2"
                      value="#{sessionScope.backing_welcome.apassword}"/>
        <af:commandButton text="Login"
                          binding="#{backing_welcome.cb1}" id="cb1"
                          action="#{backing_welcome.cb9_action}"/>
      </af:form>
    </af:document>
</f:view>

</jsp:root>3.This was my welcome.java backing bean for welcome.jspx page
    public String getAuser() {
        return auser;
    public void setApassword(String apassword) {
        this.apassword = apassword;
    public String getApassword() {
        return apassword;
    public String cb9_action() {
        String returnStr="error";
        System.out.println("Inside loginBtn_action");
        BindingContainer bindings = getBindings();
        OperationBinding operationBinding = bindings.getOperationBinding("checkLoginCredentials1");
        operationBinding.getParamsMap().put("p_user", auser);
        operationBinding.getParamsMap().put("p_pwd", apassword);
    operationBinding.execute();
    Object result = operationBinding.execute();
    if (!operationBinding.getErrors().isEmpty()) {
        returnStr= "success";
    System.out.println("returnStr= " + returnStr);
           return returnStr;
    }While i run my program no output is displayed!! No logs also been recorded!!
Could any body pls help me!!

thank you jhon!
If i am not using any binding i m getting error as
javax.el.PropertyNotFoundException: Target Unreachable, 'backing_welcome' returned nullI had used this jspx code
<?xml version='1.0' encoding='UTF-8'?>
<jsp:root xmlns:jsp="http://java.sun.com/JSP/Page" version="2.1"
          xmlns:f="http://java.sun.com/jsf/core"
          xmlns:h="http://java.sun.com/jsf/html"
          xmlns:af="http://xmlns.oracle.com/adf/faces/rich">
<jsp:directive.page contentType="text/html;charset=UTF-8"/>
<f:view>
    <af:document id="d1" >
      <af:form id="f1" >
        <af:inputText label="UserName"
                      id="it1" value="#{sessionScope.backing_welcome.auser}"/>
        <af:inputText label="Password"
                      id="it2"
                      value="#{sessionScope.backing_welcome.apassword}"/>
        <af:commandButton text="Login"
                           id="cb1"
                          action="#{sessionScope.backing_welcome.cb9_action}"/>
      </af:form>
    </af:document>
</f:view>

</jsp:root>Give me some guide how to use session scope!! Since i read all the documents i m not getting any proper output

Question about navigation in session scope

Hi.
I dont know how to resolve a problem or how to focus this stuff.
I'll try to explain myself.
Let say I have a page (a.jsf) with several links, all this links navigates to the same page (b.jsf) which shows the results.
For each link in a.jsf I have attached a bean with a logic, so If I click in link 1 I go to the b.jsf showing data read from the database.table1. If I clik in link2 I go to b.jsf showing data read from database.table2, and so on...
The beans are in session scope (and must be).
The first time works ok because I initialize the bean in b.jsf, read data and I show using a selecManyListBox to show it, but if I go back and select another link it goes to b.jsf, but it shows the old data, the data read the first time, because it never calls again the init method.
Somebody has talked about using an additional bean to control this but once the bean in b.jsf is created I don't know how to call again the init method in beanB (b.jsf)..
I have attached a very simple project to deploy in eclipse 3.3 and tomcat 6.0. In this example instead of read from database I read from an structure created in memory to simulate this.
Somebody could take a look and comment something about it.
http://rapidshare.com/files/197755305/_session-forms.war
Thanks

Hi.
I understand is the same doing in the action method in a button or a commnad, the project is just an example, my real app is a tree, so is not a question about a button or a command, is about the logic being in session scope. I don't know how to face it.
thanks

Jsf session scope variables

Similar Messages

Maybe you are looking for