Datatable: reuqest scope problem

Hi everyone
Im using A textfield where the user can input a searchstring. After he submits, a datatable is shown (dynamically generated) with the search results.
My problem is, after the user submits, the request bean is set to null again, so if i want to get the next page (paging function) also the datatable object in the bean is null again and thus cannot get the next rows.
I know i can avoid this problem by setting the bean scope to session, but actually im looking for a better solution. Can anyone help me? Im using JSF RI.
Thanks for your help.

One way of doing it is answered by BalusC
Another way of doing it is by using *<a4j:keepAlive>* tag. For more information regarding this tag please visit the following web site :
[http://livedemo.exadel.com/richfaces-demo/richfaces/keepAlive.jsf?c=keepAlive|http://livedemo.exadel.com/richfaces-demo/richfaces/keepAlive.jsf?c=keepAlive]

Similar Messages

Scop problem

Hi ,
I having a problem communicating with loaded swf inside main
file.
Im using that script to have a transition between external
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http://www.kirupa.com/developer/mx2004/transitions.htm
most of it working fine but im having problem communicating
with variable:
Stage.swf:
The main movie start to play and on its last frame it has the
following action:
this._lockroot=true
//loading the first movie after the animation finish
_root.currMovie = "main";
_root.MC_Container.loadMovie(_root.currMovie+".swf");
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portfolio.swf
Than I press on the portfolio button and I get another main
portfolio swf that has external files loeaded as well.its dividing
the portfolio into categories , each category loading external
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this._lockroot=true
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my url :
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what is the script that you have on the buttons on the bottom
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Variable scope problem?

I am not quite sure if this is a scope problem at all, but it looks like one....
Here is the problem:
I have a class in which I define a variable x as folowing:
public class XX
public var x:Integer;
In my fx script file I give it a value:
var t: XX {
x: 10
and it seems that it is initialized... however when I try to use the variable inside the class XX, it cannot be done.
for example I what try to do is
public var yy = YY {
for (i in [1..x]){
...do something...
and the cycle is executed only once!
Is this due to my inexperience in javafx or it is a standard behavior?

Is this due to my inexperience in javafx or it is a standard behavior? Both? :-)
The classical way to compute a class variable from those initialized at construction time is to do that in an init (or postinit) block.
It isn't really a problem of scope, rather of order of initialization.

Function scope problem

Hi all,
I am using a class-based system for all my actionscript, but
am having trouble getting the following code to work properly, and
I am pretty certain it is a scope issue.
public function
setNavButtons(prevStart:Number,prevEnd:Number,nextStart:Number,nextEnd:Number){
var owner = this;
if (prevStart != undefined){
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if (nextStart != undefined){
mcPropertiesNav.btnNext.onRelease = function():Void{
owner.reloadView(nextStart,NextEnd);
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method, the prevStart and prevEnd parameters are being passed in as
undefined. Does anyone know how I would reference these variables
within the onRelease functions?
Thanks in advance
Robert

In the code you are posting a scope problem can't be
pinpointed. The arguments you are providing are local to the
function so there is no problem there. We might be able to help if
you post the complete class.

Scope problem

here is the function:
public void readVector(File file)
AddressBook addressBook = new AddressBook();
try
String string, token1 ="", token2 ="", token3 ="", token4 ="",
token5 ="", token6 ="";
FileInputStream fis1 = new FileInputStream(file);
BufferedReader in = new BufferedReader(new FileReader(file));
StringTokenizer st;
while((string = in.readLine()) != null )
st = new StringTokenizer(string);
token1 = (st.hasMoreTokens())?st.nextToken():"";
token2 = (st.hasMoreTokens())?st.nextToken():"";
token3 = (st.hasMoreTokens())?st.nextToken():"";
token4 = (st.hasMoreTokens())?st.nextToken():"";
token5 = (st.hasMoreTokens())?st.nextToken():"";
token6 = (st.hasMoreTokens())?st.nextToken():"";
Contact c = new Contact(token1, token2, token3, token4, token5, token6);
addressBook.addContact(c);
catch(Exception ex)//catch exception and print stacktrace if try fails
ex.printStackTrace();
problem- some how I need to return the addresBook to another class, I can't do this because of a scope problem. Also if a solution is possible how would I call teh function in my other class.
if this function returns an addressbook
the prototype would be:
AddressBook readVector(File file);
how would I call this functino from another class to obtain the addressbok.

I dont know what you mean by scope problem. Maybe you wanna elaborate on that a bit more. However, returning AddressBook should be straightforward. You can actually do it in two slightly different ways.
1. You can define your readVector() method to be static:
public static AddressBook readVector(whatever arguments) {
....your code here...
Assuming you defined this method in class "foo", you can call this method using foo.readVector(arguments). In your calling function, you will probably have something like:
AddressBook addressbk = foo.readVector(arguments);
2. If you dont want to make your readVector() static, you will have to instantiate the class which contains this method. Again assuming class "foo" contains a definition like:
public AddressBook readVector(args) {
....your code...
In your calling method you will do the following:
foo foo_obj = new foo();
AddressBook addrbk = foo_obj.readVector(arguments);
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Having Truble Reading and Echoing Using PHP in HTML. Possible Variable Scope Problem?

Hey guys,
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<table width="357" border="1" cellspacing="0" cellpadding="0">
<tr>
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</tr>
<tr>
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</tr>
<tr>
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</tr>
</table>
In the above PHP (not shown) the array $price is filled properly (I tested by echoing each bit line by line) but by the time we get into the HTML it seems the array is empty or it is not liking how I am calling it. Does the scope of a PHP variable end with the closing "?>" tag? Am I missing something? Bellow is the full code:
<!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">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
<style type="text/css">
body {
    background-color: #333;
    color: #FFF;
</style>
</head>
<body>
<?php
$menu=fopen("prices.txt","r") or exit("Unable to open file!");
$price=array();
$priceposition=null;
$tempstring;
//This loop does all of the READING and populating of variables
while(!feof($menu))
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fclose($menu);
?>
<table width="357" border="1" cellspacing="0" cellpadding="0">
<tr>
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</tr>
<tr>
    <td>Burger 1</td>
    <td><? echo $price['1']; ?></td>
</tr>
<tr>
    <td>Drink 1</td>
    <td><? echo $price['2']; ?></td>
</tr>
</table>
</body>
</html>
and you can run the code on my test server here: christianstest.info/phptest/readwritetesting/readtest.php
thanks guys!

MurraySummers wrote:
Try changing this -
fclose($menu);
to this -
fclose($menu);
echo "<pre>";exit(print_r($price));
and see what you get.
Wow, what a great little peice of testing code, thanks! That showed me the problem right away! Is there any way to test your php line by line in Dreamweaver CS6? I am used to computer programing in Visual Studio and Eclipse where they have an option of running code line by line and seing how variables populate and change with each line of code execution. Or is thier a program that can do this for PHP?

h:dataTable re-rendering problem...

hi friends,
In my project i am using JSF and a4j .I am getting re-rendering problem with <h:dataTable> in mozilla it is working fine but in IE6 the dataTable is not re-rendering ..
code is:
<a4j:commandButton value="#{rb.New}" onmouseup="javascript:openModalWindow('/NGL/faces/jsp/circulation /ILLPlaceILLRequest.jsp','','dialogWidth:500px;dialogHeight:500px;status:no;scrollbars:yes;top:200;left:200')" >
<a4j:support event="onmousedown" action="#{requestApprove.newActionPerformed}"/>
<a4j:support event="oncomplete" reRender="illDetails"/>
</a4j:commandButton>
my task is:
when i press the New button another jsp page will open in modal dialog after closing the dialog the table should re-render...
Edited by: Venkat_quill on Oct 30, 2008 3:29 AM
Edited by: Venkat_quill on Oct 30, 2008 3:50 AM

thanks for your reply...
I have already tried this case but, the datatable is not re-rendering ...
I got below solutions..
   <a4j:commandButton value="#{rb.New}" onmouseup="javascript:openModalWindow('/NGL/faces/jsp/circulation /ILLPlaceILLRequest.jsp','','dialogWidth:500px;dialogHeight:500px;status:no;scrollbars:yes;top:200;left:200')" >
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                                <a4j:support event="oncomplete" action="#{requestApprove.clearData}" reRender="illDetails"/>
</a4j:commandButton>Why i followed this case this i have Add,Edit ,Delete and Refresh action on datatable.In Edit case i need to set some values in the dialog this also working fine with following code..
<a4j:commandButton value="#{rb.Edit}" onmouseup="editRequest()">
     <a4j:support event="onmousedown" action="#{requestApprove.editActionPerformed}" reRender="msg,msgmode"/>
    <a4j:support event="oncomplete" action="#{requestApprove.clearData}" reRender="illDetails,msg,msgmode"/>
</a4j:commandButton>But this problem is oncomplete event is not working in the Internet Explorer....

Beans scope problem

Hi
I have a bean that stores the name of the user after they have logged in. It is supposed to be in session scope
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Thanks
Richard

Here's the code
the bean: UserInfo.class
package beans;
public class UserInfo implements java.io.Serializable {
private static boolean loggedIn=false;
private static String user="";
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public static void setLoggedIn(boolean b){loggedIn=b;}
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<jsp:include page="header.jsp" flush="true">
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<%
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%>
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JSF 2.0: View Scope Problem

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But after putting the results bean into view scope searching is not working anymore. You click the search button, the search action is performed. But after successfully storing the results a new results bean is instantiated. An empty one of course.
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Comment in the JavaScript source code of the jsf.js
//Now set the view state from the server into the DOM
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Jsf datatable inside datatable component rendering problem.

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Application scope problem in a JSP

Hi,
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that dosn't work !? I can not debug my application because the jsp is initializing my app object new. When I try in my JSP :
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it works fine. I get my object which I have store in my servlet.
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null

Andy -
The web-to-go server has difficulty dealing with sessions. Testing in Tomcat is a good alternative, and this is resolved in Oracle9i JDeveloper.
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I try to do something like this:
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Slide 2
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Question 2
Slide 3
Slide 4
Question 3
Question 4
Slide 5
Slide 6
Question 5
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TIA
Andrew

Sorry but Review/Retake process for regular question slides is not as you expect (by design): if the user Reviews, he cannot use any other attempt on Quiz level, even though he didn't exhaust his attempts.
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Try to use Oracle JSP to see whether you got the same problem. OJSP also runs on Apache/JServ.
null

Datatable: reuqest scope problem

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