DataTable retrieves false (old) information (sometimes problem)

Question

I've been scratching my head for days now about a problem I'm experiencing with a datatable showing me old information.
I have a simple table which stores Clients
clientid serial (auto increments)
client char This stores the name of the client.
I have a dataTable as below:
              <h:dataTable id="clientTable" rows="10"
              rowClasses="list-row-odd,list-row-even"
              value="#{Client.listClients}" var="item"
                    binding="#{Client.data}" >
                    <h:column>
                        <f:facet name="header">
                            <h:outputText value="#{msg.tbl_no}" />
                        </f:facet>
               <h:outputText value="#{item.no}" />
                    </h:column>
              <h:column>
               <f:facet name="header">
                   <h:outputText value="#{msg.tbl_name}" />
               </f:facet>
               <h:outputText value="#{item.client}" />                         
              </h:column>
              <h:column>
               <f:facet name="header">
                   <h:outputText value="#{msg.tbl_action}" />
               </f:facet>
                        <h:commandLink id="edit" action="#{Client.editClient}">
                            <h:outputText value="#{msg.tbl_edit}" />
                        </h:commandLink>
                        <h:outputText value="#{msg.tbl_seperator}" />
                        <h:commandLink id="del" action="#{Client.delClient}">
                            <h:outputText value="#{msg.tbl_del}" />
                        </h:commandLink>                       
              </h:column>
          </h:dataTable>Here are the relevant parts of the Client (backing bean) class
    public List getListClients(){
        Session session = HibernateUtil.getSessionFactory().getCurrentSession();
        session.beginTransaction();
     List result = session.createQuery("from ClientBean").list();
        for (int i = 0; i < result.size(); i++){
            ClientBean clientbean = (ClientBean) result.get(i);
            clientbean.setNo(i % 10);
     return result;
    // Editing Client
    public String editClient(){
        ClientBean selectedClient = (ClientBean) this.getData().getRowData();         // Get the selected item from dataTable
        FacesContext ctx = FacesContext.getCurrentInstance();                               // Get the Faces Context
        ctx.getExternalContext().getSessionMap().put("EditClient", selectedClient );    // Save item as sessionmap
        return "edit";
    // Save the edited item.
    public String saveEditClient(){
        ClientBean clientbean = (ClientBean)JSFUtil.getManagedObject("EditClient"); // Get the Session mapped item
         * Now we must rename the directory if it exists
         * Will require a valuechanger method on the Client text box so we can get the original Client Name.
        if(oldClient == null){
            // Nothing has changed.
            return "cancel";
        Settings settings = new Settings();
        File clientSourceDir = new File(settings.getDest() + "/" + oldClient.toLowerCase());
        File clientDestDir = new File(settings.getDest() + "/" + clientbean.getClient().toLowerCase());
        // Move the file accross.
        boolean success = clientSourceDir.renameTo(clientDestDir);
        if (!success){
            System.out.println("Failed to copy");
            return "cancel";
        /** Now commit to the database */
        Session session = HibernateUtil.getSessionFactory().getCurrentSession();    // Create the session
        session.beginTransaction();                                                 // build a transaction
        session.merge(clientbean);                                                  // Save the current object.
        session.getTransaction().commit();                                          // Commit this to the database
        return "success";
    }Here is my edit JSP file:
<%@taglib prefix="f" uri="http://java.sun.com/jsf/core"%>
<%@taglib prefix="h" uri="http://java.sun.com/jsf/html"%>
<f:loadBundle basename="pdfcat.bundle.messages" var="msg" />
<!-- For the custom component, must match what's in the WEB-INF/components.tld file. -->
<%@ taglib prefix="jcr" uri="http://www.pais.com.au"  %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
   "http://www.w3.org/TR/html4/loose.dtd">
<link href="../css/pdfcat.css" rel="stylesheet" media="screen" />
<script language="JavaScript" type="text/javascript" src="../js/form.js" ></script>
<html>
    <f:view>
        <head>
            <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
            <title><h:outputText value="#{msg.client_title}" /></title>
        </head>
        <body onload="document.getElementById('form_input:client').focus();">
            <div id="headingback">
                <div id="heading"><h:outputText value="#{msg.client_edit_heading}" /></div>
            </div>
            <!-- Custom component for Clientalog Navigation menus. -->
            <jcr:catnav />
            <h:form id="form_input">
                <!-- Get the label from bundle/messages.properties -->
                <h:outputText value="#{msg.client_form_client}" />
                <!-- Create a Text field value linked to the ClientBean -->
                <h:inputText id="client" valueChangeListener="#{Client.clientChangeListener}" value="#{EditClient.client}" required="true" />
                <!-- Any error messages go here. -->
                <h:message for="client" errorClass="err" />
                <!-- Create a submit button. -->
                <p>
                    <h:commandButton value="Submit" action="#{Client.saveEditClient}" />
                    <h:commandButton id="btn_cancel" value="Cancel" action="cancel" immediate="true" />
                </p>
            </h:form>
     </body>
    </f:view>
</html>To test I do the following:
First I click on my Edit button for the item I want to edit, I change the name of the client and hit the submit button, this returns to my dataTable listing. Now I leave the page there for about 5 minutes, then reload the page and it shows me the old value. It's not showing me the new value which is in the database for that one item I changed, then if I refresh sometimes it will show me the correct value and sometimes not! I hate sometimes problems there always a pain.
It's like there are two objects for that one item entry and the dataTable gets confused and just picks one of them (randomly).
Am I on the right track here?
Can anyone shed some light on this problem and a possible solution?
I'm using JSF 1.1 RI, hibernate 3, postgres 7.4 database, netbeans 5.5 on a FreeBSD 6.2 machine.

Answer 1

Just spotted you are having connect and disconnect problems with HH2.
Short answer:
Try this workaround; despite my own scepticism when first advised about it, this will fix both wifi and ethernet problems; the fact that your HH2 will not connect to your wifi and/or your ethernet connector is related to the HH2’s acknowledged problem with its DHCP table.
Access the Hub and set your wifi channel to non-automatic and select Channel 11.
Save the settings and re-boot the HomeHub and your PC.
Check your performance and that your wifi and/or ethernet connection is working normally, if this works you are OK, if not repeat the cycle and choose, in turn, Channels 9 and 1.
As your line speed is under-performing, it is now very important let the HH run very specifically for the training period uninterrupted (whether you believe that to be 72 hours, five days or ten days is for you to decide). I stress, do NOT reboot or disconnect the HH during that period to enable the exchange and it to establish the optimum speed for the line (during that period you may observe the HH resetting itself during renegotiation - that is normal).
Long answer:
See my post of22 Sept 2011:
BT Failure & Sanctioned Workaround for HomeHub V 2.0 A
Good Luck
+++###+++
If you feel the problem is solved, please don't forget to come back and confrm the fix or post any other solution. It helps those who really need it to judge whether it works or not.
Also, mark the thread solved