Checkbox group selected property binding not working

Question

Hi,
I've been through all the threads and tutorials relating to this problem and none of them help.
The Situation
I have a checkbox group which I have bound the items items property to a MySQL database (value field = int, display field = String). I have bound the Selected property to a sessionbean field which is an int[] array.
I have a processValueChange event for my checkbox group which grabs the selected boxes values (ie the int value of the checkbox id). Based on these values it does some other processing.
The Problem
When the page loads everything is displayed ok. When I select a checkbox within the checkbox group the getSelected() method returns the int value of the selected checkbox and perform other processing as necessary... so far so good.
However, when the page finishes processing and reloads the selected checkboxes are not ticked. I'm sure it has something to do with the Selected property of the checkboxgroup but I can't for the life of me work out why. For multiselect objects the Selected property must be bound to an array which I have done with my int[] array. I've tried preloading the array with default values (1, 2, etc) to mimic the int values from the database. I've tried changing the array to a boolean array but this throws exceptions. So basically i'm stuck.
The Source
Session Bean
    private int[] extras;
    public int[] getExtras() {
        return this.extras;
    public void setExtras(int[] extras) {
        this.extras = extras;
Page JSP
<ui:checkboxGroup binding="#{book_package.extras}"
                                                                                converter="#{book_package.extrasConverter}" id="extras"
                                                                                items="#{book_package.extrasDataProvider.options['extras.ExtrasID,extras.Name']}"
                                                                                onClick="common_timeoutSubmitForm(this.form, 'table:tr:td:table:tr:td:table:tr:td:div:div:table:tr:td:extras');"
                                                                                selected="#{SessionBean1.extras}" valueChangeListener="#{book_package.extras_processValueChange}"/>
Page Java
    public void extras_processValueChange(ValueChangeEvent event) {
        // TODO: Replace with your code
        getSessionBean1().setExtrasTotal(0);
        try {
            int[] extra = (int[])extras.getSelected();
            int extrasId = 0;
            int extraPrice = 0;
            if (extra.length != 0) {
                for (int i=0; i < extra.length; i++) {
                    extrasDataProvider.cursorFirst();
                    do {
                        extrasId = new Integer(extrasDataProvider.getValue("ExtrasId").toString()).intValue();
                        if (extrasId == extra) {
extraPrice = getSessionBean1().getExtrasTotal() + new Integer(extrasDataProvider.getValue("Price").toString()).intValue();
getSessionBean1().setExtrasTotal(extraPrice);
break;
} while (extrasDataProvider.cursorNext());
} catch (Exception e) {
log("Exception occurred!!", e);
error("Error: "+e.getMessage());
getSessionBean1().setTotalPrice(getSessionBean1().getPackagePrice() + getSessionBean1().getExtrasTotal());
Any help appreciated.
Thanks.

Answer 1

ok, i found the problem. MySQL int value is treated as an Integer in Creator. I changed my SessionBean array from int[] to Integer[] and now it works properly... phew!!!