Don't know how to iterate over supplied "items" in forEach&gt

I try the following
I have form , bean , servlet and JSTL
in bean I have constructor like
public MyForm(String a_item) {
this.a_item = a_item;
in servlet
MYForm uf = new MyForm(a_item);
userSession.setAttribute("underform", uf);
in jstl
I have
<c:forEach items="${sessionScope.underform}" var="found">
<table cellspacing="0" cellpadding="0" width="100%" border="0">
<tr><td align="left" valign="top">
<c:if test="${found.a_item=='on' }">
<li> <input type="checkbox" name="a_item" checked></li>
</c:if>
</td>
</tr>
</table>
I GET THE ERR Don't know how to iterate over supplied "items" in <forEach>
HOW CAN I Persisting data by the request by as an object ??
thank you!

so you suggest the method oneConsidering that I said exactly the opposite, it is a mystery to me how you could possibly have drawn that conclusion. I don't intend to keep repeating myself or to keep clarifying statements that are already perfectly clear. If you don't understand something, please say so. But don't put words into my mouth thanks.
that means all logical will be handle on bean and not servlet is needed?Once again I have no idea what you mean by this question.
what is the role for the servlet in MVC?And I have no idea what you mean by this question either, or how it relates to this thread. A JSP is a servlet in case you didn't know.

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c:foreach Don't know how to iterate over supplied "items"

I keep getting this error (Don't know how to iterate over supplied "items" in <forEach>) whenever i run my jsp page.
JSP Code:
<c:set var="page_action" value="${sessionScope.httpData.find_Fix}" />
                    <c:set var="LoadedUpdates" value="${sessionScope.hotFix.fixDetails}" />
<c:if test="${page_action != null}" >
<div class="hot-fix">
<table>
<c:forEach items="${LoadedUpdates}" var="updates" varStatus="status">
<tr>
<td> ${status.count} </td><td><c:out value="${updates}" /></td>
</tr>
</c:forEach>
</table>
</div>
</c:if>JAVA Code (Backend Bean):
import com.sun.java.util.collections.ArrayList;
public class HotFixLoader {
ArrayList fixdetails = new ArrayList();
public HotFixLoader(){
for (int i = 0; i < 10; i++){
fixdetails.add("<a href=\"#\">xxxxxx</a>, xx/xx/xxxx, xyxyxyxyxy");
public ArrayList getFixDetails(){
return fixdetails;
}

Please don't post your problem multiple times http://forum.java.sun.com/thread.jspa?threadID=720679&messageID=4157979#4157979

Session Problems: "Don't know how to iterate over supplied "items""

Hi, I am developing my first application using Struts and JSP. The Action Form loads an object called reportGrid into session and I am trying to display it on a JSP page. Displaying simple variables works fine, but I can display an object. The error I receive is: Don't know how to iterate over supplied "items"
My object is made up of a group of ArrayLists looks similar to this this:
        private List affiliateID;
     private List affiliateName;
     private List product1;
     private List product2;
     //etc for about 10 listsThe object is filled with data from a result set and placed into session like:
     HttpSession session = request.getSession();
     session.setAttribute("grid", reportGrid);The goal is to display each list in its own column in a HTML table.
<table>
<tr>
<c:forEach var="affiliateName" items="${grid}">
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          </td>
     </c:forEach>
     <c:forEach var="product1" items="${grid}">
          <td>
               <c:out value="${product1}" />
          </td>
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     <c:forEach var="product2" items="${grid}">
          <td>
               <c:out value="${product2}" />
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</tr>
</table>I'm sure this has been asked before but I could not find any examples in the forums. I can place an ArrayList directly into session and iterate through using <c:forEach tags but when I try to do the same with an object it gives me the error " Don't know how to iterate over supplied "items" ".
Does anyone have any examples of pulling and displaying an object in session which contains ArrayLists? I have been stuck on this same error for a while and any help will be greatly apreciated.
James.

What is the type of grid?

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Hi!!I have some problems with the synchronization of my system, and I don´t know how I can solve this!

My system consists of differents vi´s.Some of them are used to read analogic inputs and digital inputs, using the serial port.
The values that I read, go through differents vi to be proccesed, and at the end, these values are written in a file, all the values in the same file.
My problems of synchronization are:
1. I have one vi per input, and all of them use the same serial port. How can I synchronize them to avoid serial port conflicts? (using queues??) And how can I do, to get differents number of samples/sg with every vi? I have to introduce them in differents loops?
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I think you are pretty much on the right track with Queues. I have implemented a very similar system myself using queues. I have even different systems connected to the serial interface, but I can synchronise them all easily using the following method:
1) Make a VI for opening the serial port and reading the data. The data (parsed to extract the numbers required) are then stored in an array (Shift register). If the pre-determined time delay is reached (say 5 seconds) the values are averaged and written to a Queue with a defined data type. Save the VI as a VI template.
2) Make a VI which starts an instance of this template VI for every channel you require. You can use VI Server to set values on the new front panel before you set it's property to "running". Setting a timer value for all can help ensure that the X-Axis of your timing values (if you require) are synchronised. The clue here is to define and initiate a QUEUE per channel. (RS-232_1, RS-232_2 and so on). The QUEUE name needs to be passed to the VI Template before running so that each VI running in the background has an individual link to the main program.
The second part of this VI simply uses an array of QUEUES, polling them one after another with a timeout of, say 5 ms. If data is found, append accordingly to an XY-Graph.
I also add in some "Auto termination" in the VI template (MAx number of values allowed in the QUEUE for example) to allow for the background processes to find out if the front-VI is still running or not. There are many different ways to do this, shoose the best for your application.
With this approach, it's not even important what instrument is connected as long as data is written in a specified format into a known QUEUE. I have also developed systems where I can transparently (almost) drop in VI Templates for instruments with similar functionality (output data) from different suppliers.
I would post an example, but the time it would take me to clean it up is too large. Sorry. If you have any further questions, don't hesitate to ask further questions.
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<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<f:view xmlns:f="http://java.sun.com/jsf/core" xmlns:af="http://xmlns.oracle.com/adf/faces/rich"
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             taskIdToPass = $(this).attr('tid').toString();
        } else {
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            hints[AdfRichPopup.HINT_ALIGN_ID] = "cb1";
            hints[AdfRichPopup.HINT_ALIGN] = AdfRichPopup.ALIGN_AFTER_START;
            popup.show(hints);
    }).live("mouseout", function () {
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        popup.hide();
};My bean that is session bean:
package view;
import oracle.adf.model.BindingContext;
import oracle.adf.model.binding.DCDataControl;
import oracle.adf.view.rich.component.rich.RichPopup;
import oracle.adf.view.rich.render.ClientEvent;
import oracle.jbo.ApplicationModule;
import oracle.jbo.Key;
import oracle.jbo.Row;
import oracle.jbo.RowSetIterator;
import oracle.jbo.ViewObject;
public class HomeBean {
    private RichPopup popup;
    private String taskId1;
    private String startLocation;
    private String stopLocation;
    private long taskId;
    private String taskType;
    public HomeBean() {
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    public void serverEventHandler(ClientEvent clientEvent) {
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        this.taskId = Long.parseLong(taskIdString);
        DCDataControl dc1 = BindingContext.getCurrent().findDataControl("AppModuleDataControl");
        ApplicationModule am = dc1.getApplicationModule();
        ViewObject vo = am.findViewObject("PdTrfDayView1");
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       this.stopLocation = row.getAttribute("StopLocation").toString();
       this.taskType = row.getAttribute ("PdTrfTypeId").toString();
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        vo.closeRowSetIterator();
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        return taskId;
    public void setPopup(RichPopup popup) {
        this.popup = popup;
    public RichPopup getPopup() {
        return popup;
    public String getTaskId1() {
        return taskId1;
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        return startLocation;
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        return stopLocation;
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}I am wondering If i can use setCurrentRow on the iterator that i create and use it for displaying on the popup instead of binding startLocation and stopLocation to the bean and if there is any benefit of that at all...
Edited by: 897833 on Nov 24, 2011 11:37 AM

Hi,
To use tooltipkeys and tooltiplabel in gantt, you can add following code in managed bean
public String[] getTooltipKeys()
return new String[]{"columnA", "columnB", "StartDate", "EndDate"};
public String[] getTooltipLabels()
return new String[]{"A", "B", "Start Date", "End Date"};
where , the string array in the ToolTipKeys represents the columns, of the table you have in the gantt component , and the string array in TooltipLabels displays the label you want to display for the table columns.
In the jsff, you could call the bean methods as follows:
tooltipKeys="#{GanttBean.tooltipKeys}"
tooltipKeyLabels="#{GanttBean.tooltipLabels}"

Don't know how to iterate over supplied "items" in forEach&gt

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