Hello,

My aim is to show filtered data in table where filter depends on request parameter. That data might be large therefore I don't want to store it in the session. I have hard time trying to pass that request parameter to filtering java code. So I created separate session bean that contains only one string for that parameter and I added it to backup bean, which performs filtering:

public class AType {
    private String type; 
    // getter & setter
}

public class ActivityController {
    private AType atype;
//...
    public List<Activity> getAll() {
        String type = atype.getType();
        System.out.println("Type = " + type);
        if ("future".equals(type)) {
            return getFutureActivities();
        } else {
            return getTodayActivities();
        }
    }
}

I'm obtaining the parameter in this way:

<f:metadata>
    <f:viewParam name="type" value="#{activityController.atype.type}" />
</f:metadata>

<ui:composition template="WEB-INF/pages/template.xhtml">
        <ui:define name="body">
            <f:view>
                <h:form>
                    <rich:extendedDataTable ... value="#{activityController.all}"
                        var="item" >
 ...

The problem is that for some reason activityController.atype.type is usually initialised twice - firstly the right value is set and after that (but not always) its previous value is set. So I have to press links many times before I reach desired page. But when I change URL (not clicking at the link), everything works in the proper way.

What's wrong with this, what do I do wrong?

P.S. btw links on which I pressed were added in this way:

<h:outputLink value="activities.xhtml?type=future">
         <h:outputText value="Future Activities"></h:outputText>
</h:outputLink>