NullpointerError when rendering a calendar with modal panel
i use a rich:calendar associated with a calendardatamodel. I use the rich:clalendar to mark certain days as holidays. This is done using a modal panel displayed when days are clicked
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:a4j="http://richfaces.org/a4j"
xmlns:c="http://java.sun.com/jstl/core"
xmlns:rich="http://richfaces.org/rich">
<head>
<title>RichFaces Editable DataTable</title>
<style type="text/css">
.hpsa-calendar-weekend {
background-color: #00FFFF
}
.hpsa-calendar-working {
background-color: #FFFFFF;
}
.hpsa-calendar-holiday {
background-color: #0000FF;
}
.hpsa-calendar-recholiday {
background-color: #00FF00;
}
</style>
</head>
<body>
<h:form id="calendarform">
<a4j:jsFunction name="ajaxSubmit" oncomplete="#{rich:component('panel')}.show()" reRender="editContent" />
<rich:panel header="Test Calendar Data Model">
<rich:calendar id="businessCalendar" value="#{calendarBean.selectedDate}" timeZone="#{calendarBean.timeZone}" datePattern="#{calendarBean.datePattern}" showApplyButton="#{calendarBean.showApply}" popup="#{calendarBean.popup}" enableManualInput="#{calendarBean.manualInput}" dataModel="#{calendarDataModel}" showWeeksBar="false" boundaryDatesMode="scroll" mode="ajax" onchanged="if (event.rich.date) {ajaxSubmit();}">
</rich:calendar>
<a4j:commandButton value="Get Date" action="#{calendarBean.printDate}" />
</rich:panel>
</h:form>
<rich:modalPanel id="panel" resizeable="false">
<f:facet name="header">Edit Day:</f:facet>
<f:facet name="controls">
<h:panelGroup>
<h:graphicImage value="/images/modal/close.png" id="hidelink" styleClass="hidelink"/>
<rich:componentControl for="panel" attachTo="hidelink" operation="hide" event="onclick"/>
</h:panelGroup>
</f:facet>
<h:form>
<h:panelGrid columns="2" id="editContent">
<h:outputText value="Short Description:"/>
<button type="button" id="cancelbutton" onclick="#{rich:component('panel')}.hide()">Cancel</button>
</h:panelGrid>
</h:form>
</rich:modalPanel>
</body>
</html>The CalendarDataModel implementation is
public class CalendarDataModelImpl implements CalendarDataModel
{
private CalendarDataModelItem[] items;
private Date currentDate;
private boolean holiday = false;
private boolean recurringHoliday = false;
public CalendarDataModelItem[] getData(Date[] dateArray)
{
System.out.println("In CalendarDataModelImpl getData() arg0::" + dateArray);
if (dateArray == null) {
return null;
}
System.out.println("dateArray size::"+dateArray.length);
items = new CalendarDataModelItem[dateArray.length];
for (int i = 0; i < dateArray.length; i++) {
items = createDataModelItem(dateArray);
}
System.out.println("items size::"+items.length);
return items;
}
protected CalendarDataModelItem createDataModelItem(Date date)
{
CalendarDataModelItemImpl item = new CalendarDataModelItemImpl();
Map<String, Boolean> data = new HashMap<String, Boolean>();
data.put("holiday", false);
data.put("recurringholiday", false);
Calendar c = Calendar.getInstance();
c.setTime(date);
item.setDay(c.get(Calendar.DAY_OF_MONTH));
int weekday = c.get(Calendar.DAY_OF_WEEK);
if (weekday == 5 || weekday == 6) {
item.setStyleClass("hpsa-calendar-weekend");
item.setEnabled(false);
} else {
item.setStyleClass("hpsa-calendar-working");
item.setEnabled(true);
}
/*if (item.getDay() == 11) {
item.setStyleClass("hpsa-calendar-holiday");
}
if (item.getDay() == 24) {
item.setStyleClass("hpsa-calendar-recholiday");
}*/
item.setData(data);
return item;
}
public Object getToolTip(Date arg0)
{
// TODO Auto-generated method stub
return null;
}
public CalendarDataModelItem[] getItems()
{
return items;
}
public void setItems(CalendarDataModelItem[] items)
{
this.items = items;
}
public boolean isHoliday()
{
return holiday;
}
public void setHoliday(boolean holiday)
{
this.holiday = holiday;
}
public boolean isRecurringHoliday()
{
return recurringHoliday;
}
public void setRecurringHoliday(boolean recurringHoliday)
{
this.recurringHoliday = recurringHoliday;
}
public void valueChanged(ValueChangeEvent event)
{
System.out.println(event.getNewValue() + "selected");
setCurrentDate((Date)event.getNewValue());
Calendar calendar = Calendar.getInstance();
calendar.setTime(getCurrentDate());
setHoliday((Boolean)((HashMap)items[calendar.get(Calendar.DAY_OF_MONTH) - 1].getData()).get("holiday"));
setRecurringHoliday((Boolean)((HashMap)items[calendar.get(Calendar.DAY_OF_MONTH) - 1].getData())
.get("recurringholiday"));
}
public void storeDayDetails()
{
Calendar calendar = Calendar.getInstance();
calendar.setTime(getCurrentDate());
((HashMap)items[calendar.get(Calendar.DAY_OF_MONTH) - 1].getData()).put("holiday", isHoliday());
((HashMap)items[calendar.get(Calendar.DAY_OF_MONTH) - 1].getData()).put("recurringholiday", isRecurringHoliday());
}
public Date getCurrentDate()
{
return currentDate;
}
public void setCurrentDate(Date currentDate)
{
this.currentDate = currentDate;
}
}When the application is deployed and i click on any day in the current month, the modal panel is displayed. But when I change the month on the calendar to the next month I get the following error
2009-08-28 13:47:23,945 ERROR [STDERR] Aug 28, 2009 1:47:23 PM com.sun.facelets.FaceletViewHandler handleRenderException
SEVERE: Error Rendering View[/pages/listing.xhtml]
java.lang.NullPointerException
at org.apache.el.lang.FunctionMapperImpl$Function.writeExternal(FunctionMapperImpl.java:123)
at java.io.ObjectOutputStream.writeExternalData(ObjectOutputStream.java:1310)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1288)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:302)
at java.util.HashMap.writeObject(HashMap.java:1039)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:917)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1339)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:302)
at org.apache.el.lang.FunctionMapperImpl.writeExternal(FunctionMapperImpl.java:74)
at java.io.ObjectOutputStream.writeExternalData(ObjectOutputStream.java:1310)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1288)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:302)
at org.apache.el.ValueExpressionImpl.writeExternal(ValueExpressionImpl.java:256)
at java.io.ObjectOutputStream.writeExternalData(ObjectOutputStream.java:1310)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1288)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:302)
at com.sun.facelets.el.TagValueExpression.writeExternal(TagValueExpression.java:128)
at java.io.ObjectOutputStream.writeExternalData(ObjectOutputStream.java:1310)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1288)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1251)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1075)
at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1251)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1075)
at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1251)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1075)
at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1251)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1075)
at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1251)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1075)
at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1251)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1075)
at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1251)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1075)
at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1251)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1075)
at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1251)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1075)
at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1251)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1075)
at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1251)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1075)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:302)
at com.sun.faces.renderkit.ResponseStateManagerImpl.writeState(ResponseStateManagerImpl.java:244)
at javax.faces.render.ResponseStateManager.writeState(ResponseStateManager.java:155)
at org.ajax4jsf.application.AjaxStateManager.writeState(AjaxStateManager.java:294)
at org.ajax4jsf.application.AjaxStateManager.writeState(AjaxStateManager.java:256)
at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:606)
at org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:100)
at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:176)
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:106)
at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251)
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:144)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:245)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:178)
at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290)
at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:368)
at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:495)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
at java.lang.Thread.run(Thread.java:595)
