getting null on @Listen("onEventEdit = #calendars") event SelectorComposer<Component> on clustered environment

asked 2015-04-10 08:37:26 +0800

Aasifi gravatar image Aasifi
15 3

updated 2015-04-22 14:01:01 +0800

Hello Everyone,

I have two tomcats deployed at my machine and using clustered environment for my application.I am using zk calendar at in my application.I am using SelectorComposer<component> for listing events and for Create/Edit of events I am calling my own custom jsp files.Everything works fine when application is deployed only on one tomcat but for clustering on clicking of edit of event I am getting an alert mentioning "null" only.It works fine for create event.I am unable to get the issue as it is displaying only "null" in alert.

My zul file looks like

<zk> <style src="/widgets/zk_calendar/zk_calendar/style.css"/> <window id="displayMyEntry">

<hlayout sclass="z-valign-middle"> <button id="today" label="${labels.Today}"/> <button id="prev" image="../img/arrow-180.png"/> <button id="next" image="../img/arrow.png"/> <separator width="50px"/> <button id="pageDay" label="${labels.Day}" width="55px"/> <button id="pageWeek" label="${labels.Week}" width="55px"/> <button id="pageMonth" label="${labels.Month}" width="55px"/> <separator width="50px"/> ${labels.Filter} : <textbox id="filter"/> <button id="applyFilter" label="${labels.Apply}"/> <button id="resetFilter" label="${labels.Reset}"/> </hlayout> <separator bar="true" height="20px"/>

        <calendars id="calendars" firstDayOfWeek="Sunday" height="600px" 
            <toolbar sclass="calendar-toolbar">
                <div class="float-left">



Also my CalendarController.java is

public class CalendarController extends SelectorComposer<component> implements Serializable { private static final long serialVersionUID = 1L; DateFormat formatter; int key = 0; public HashMap eventMap = new HashMap();

private Calendars calendars;
private Textbox filter;

private CalendarModel calendarModel;

//the in editing calendar ui event
private CalendarsEvent calendarsEvent = null;

public void doAfterCompose(Component comp) throws Exception {
    calendarModel = new CalendarModel(new CalendarData().getCalendarEvents());

@Listen("onEventCreate = #calendars")
public void createEvent(CalendarsEvent event) {
    System.out.println("onEventCreate :::"+event.getName());
    formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm");

    String stDate = "";
    String endDate = "";
    if (event != null)
        stDate = formatter.format(event.getBeginDate());
        endDate = formatter.format(event.getEndDate());
    String uri = "createEvent.jsp?startDate=" + stDate + "&endDate=" + endDate; 
    try {
        java.net.URLEncoder.encode(uri, "UTF-8");
    } catch (UnsupportedEncodingException e) {


    Executions.getCurrent().sendRedirect(uri, "_parent");

/* Unable to call this method when used in clustering*/
@Listen("onEventEdit = #calendars")
public void editEvent(CalendarsEvent event) {
        try {
    org.zkoss.calendar.Calendars cal = (org.zkoss.calendar.Calendars) event.getTarget();
    SimpleCalendarModel m = (SimpleCalendarModel) cal.getModel();
    SimpleCalendarEvent sce = (SimpleCalendarEvent) event.getCalendarEvent();
    int index = m.indexOf(sce);

    eventMap = (HashMap)Sessions.getCurrent().getAttribute("eventMap");
    int eventid = Integer.parseInt(eventMap.get(index).toString());
    String uri = "e_event.jsp?eventid="+eventid;

        java.net.URLEncoder.encode(uri, "UTF-8");
        Executions.getCurrent().sendRedirect(uri, "_parent");
        } catch (UnsupportedEncodingException e) {


@Listen("onEventUpdate = #calendars")
public void updateEvent(CalendarsEvent event) {
    CalendarEvents data = (CalendarEvents) event.getCalendarEvent();


Please help me out.Any help would be highly appreciated. Regards, Aasif Iqbal

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Asked: 2015-04-10 08:37:26 +0800

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Last updated: Apr 22 '15

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