People , i am new on Seam and i am trying to use the calendar component of richfaces.

When i select a cell of calendar i get of follow error.

21:36:44,203 WARN  [lifecycle] /calendario.xhtml @28,220 valueChangeListener="#{calendarDataModel.valueChanged}": org.jboss.seam.core.LockTimeoutException: could not acquire lock on @Synchronized component: calendarDataModel
java.lang.IllegalStateException: /calendario.xhtml @28,220 valueChangeListener="#{calendarDataModel.valueChanged}": org.jboss.seam.core.LockTimeoutException: could not acquire lock on @Synchronized component: calendarDataModel
     at javax.faces.component.MethodBindingValueChangeListener.processValueChange(MethodBindingValueChangeListener.java:107)
     at javax.faces.event.ValueChangeEvent.processListener(ValueChangeEvent.java:134)
     at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:771)
     at org.richfaces.component.UICalendar.broadcast(UICalendar.java:599)
     at org.ajax4jsf.component.AjaxViewRoot.processEvents(AjaxViewRoot.java:321)
     at org.ajax4jsf.component.AjaxViewRoot.broadcastEvents(AjaxViewRoot.java:294)
     at org.ajax4jsf.component.AjaxViewRoot.processPhase(AjaxViewRoot.java:253)
     at org.ajax4jsf.component.AjaxViewRoot.processValidators(AjaxViewRoot.java:455)
     at com.sun.faces.lifecycle.ProcessValidationsPhase.execute(ProcessValidationsPhase.java:76)
     at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
     at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
     at javax.faces.webapp.FacesServlet.service(FacesServlet.java:265)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
     at org.jboss.seam.web.IdentityFilter.doFilter(IdentityFilter.java:40)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:90)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:178)
     at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290)
     at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:390)
     at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:517)
     at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:56)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:60)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.web.HotDeployFilter.doFilter(HotDeployFilter.java:53)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
     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:235)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
     at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190)
     at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433)
     at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92)
     at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)
     at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)
     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:158)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
     at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)
     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:828)
     at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:601)
     at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
     at java.lang.Thread.run(Thread.java:619)
21:36:44,203 ERROR [lifecycle] JSF1054: (Phase ID: PROCESS_VALIDATIONS 3, View ID: /calendario.xhtml) Exception thrown during phase execution: javax.faces.event.PhaseEvent[source=com.sun.faces.lifecycle.LifecycleImpl@12ebc6]
21:36:48,265 INFO  [compiler] Added Library from: vfszip:/E:/programas/jboss-5.0.0.GA/server/default/deploy/Money-ear.ear/Money.war/WEB-INF/lib/jboss-seam-excel.jar/META-INF/seam-excel.taglib.xml
21:36:48,281 INFO  [compiler] Added Library from: vfszip:/E:/programas/jboss-5.0.0.GA/server/default/deploy/Money-ear.ear/Money.war/WEB-INF/lib/jboss-seam-mail.jar/META-INF/seam-mail.taglib.xml
21:36:48,281 INFO  [compiler] Added Library from: vfszip:/E:/programas/jboss-5.0.0.GA/server/default/deploy/Money-ear.ear/Money.war/WEB-INF/lib/jsf-facelets.jar/META-INF/jsf-core.taglib.xml
21:36:48,281 INFO  [compiler] Added Library from: vfszip:/E:/programas/jboss-5.0.0.GA/server/default/deploy/Money-ear.ear/Money.war/WEB-INF/lib/jsf-facelets.jar/META-INF/jsf-html.taglib.xml
21:36:48,281 INFO  [compiler] Added Library from: vfszip:/E:/programas/jboss-5.0.0.GA/server/default/deploy/Money-ear.ear/Money.war/WEB-INF/lib/jsf-facelets.jar/META-INF/jsf-ui.taglib.xml
21:36:48,296 INFO  [compiler] Added Library from: vfszip:/E:/programas/jboss-5.0.0.GA/server/default/deploy/Money-ear.ear/Money.war/WEB-INF/lib/jsf-facelets.jar/META-INF/jstl-core.taglib.xml
21:36:48,296 INFO  [compiler] Added Library from: vfszip:/E:/programas/jboss-5.0.0.GA/server/default/deploy/Money-ear.ear/Money.war/WEB-INF/lib/jsf-facelets.jar/META-INF/jstl-fn.taglib.xml
21:36:48,296 INFO  [compiler] Added Library from: vfszip:/E:/programas/jboss-5.0.0.GA/server/default/deploy/Money-ear.ear/Money.war/WEB-INF/lib/richfaces-ui.jar/META-INF/a4j.taglib.xml
21:36:48,296 INFO  [compiler] Added Library from: vfszip:/E:/programas/jboss-5.0.0.GA/server/default/deploy/Money-ear.ear/Money.war/WEB-INF/lib/richfaces-ui.jar/META-INF/ajax4jsf.taglib.xml
21:36:48,312 INFO  [compiler] Added Library from: vfszip:/E:/programas/jboss-5.0.0.GA/server/default/deploy/Money-ear.ear/Money.war/WEB-INF/lib/richfaces-ui.jar/META-INF/jsp.taglib.xml
21:36:48,312 INFO  [compiler] Added Library from: vfszip:/E:/programas/jboss-5.0.0.GA/server/default/deploy/Money-ear.ear/Money.war/WEB-INF/lib/richfaces-ui.jar/META-INF/rich.taglib.xml
21:36:48,312 INFO  [compiler] Added Library from: vfszip:/E:/programas/jboss-5.0.0.GA/server/default/deploy/Money-ear.ear/Money.war/WEB-INF/lib/richfaces-ui.jar/META-INF/richfaces.taglib.xml
21:36:48,328 INFO  [compiler] Added Library from: vfszip:/E:/programas/jboss-5.0.0.GA/server/default/deploy/Money-ear.ear/Money.war/WEB-INF/lib/jboss-seam-ui.jar/META-INF/s.taglib.xml
21:36:48,328 INFO  [compiler] Added Library from: vfszip:/E:/programas/jboss-5.0.0.GA/server/default/deploy/Money-ear.ear/Money.war/WEB-INF/lib/jboss-seam-pdf.jar/META-INF/seam-pdf.taglib.xml
21:37:02,828 WARN  [lifecycle] /calendario.xhtml @28,220 valueChangeListener="#{calendarDataModel.valueChanged}": java.lang.NullPointerException
java.lang.IllegalStateException: /calendario.xhtml @28,220 valueChangeListener="#{calendarDataModel.valueChanged}": java.lang.NullPointerException
     at javax.faces.component.MethodBindingValueChangeListener.processValueChange(MethodBindingValueChangeListener.java:107)
     at javax.faces.event.ValueChangeEvent.processListener(ValueChangeEvent.java:134)
     at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:771)
     at org.richfaces.component.UICalendar.broadcast(UICalendar.java:599)
     at org.ajax4jsf.component.AjaxViewRoot.processEvents(AjaxViewRoot.java:321)
     at org.ajax4jsf.component.AjaxViewRoot.broadcastEvents(AjaxViewRoot.java:294)
     at org.ajax4jsf.component.AjaxViewRoot.processPhase(AjaxViewRoot.java:253)
     at org.ajax4jsf.component.AjaxViewRoot.processValidators(AjaxViewRoot.java:455)
     at com.sun.faces.lifecycle.ProcessValidationsPhase.execute(ProcessValidationsPhase.java:76)
     at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
     at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
     at javax.faces.webapp.FacesServlet.service(FacesServlet.java:265)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
     at org.jboss.seam.web.IdentityFilter.doFilter(IdentityFilter.java:40)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:90)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:178)
     at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290)
     at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:390)
     at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:517)
     at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:56)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:60)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.web.HotDeployFilter.doFilter(HotDeployFilter.java:53)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
     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:235)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
     at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190)
     at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433)
     at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92)
     at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)
     at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)
     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:158)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
     at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)
     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:828)
     at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:601)
     at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
     at java.lang.Thread.run(Thread.java:619)
21:37:02,828 ERROR [lifecycle] JSF1054: (Phase ID: PROCESS_VALIDATIONS 3, View ID: /calendario.xhtml) Exception thrown during phase execution: javax.faces.event.PhaseEvent[source=com.sun.faces.lifecycle.LifecycleImpl@12ebc6]
21:37:29,109 INFO  [STDOUT] Wed Oct 21 00:00:00 BRST 2009selected
21:37:30,234 WARN  [lifecycle] /calendario.xhtml @28,220 valueChangeListener="#{calendarDataModel.valueChanged}": org.jboss.seam.core.LockTimeoutException: could not acquire lock on @Synchronized component: calendarDataModel
java.lang.IllegalStateException: /calendario.xhtml @28,220 valueChangeListener="#{calendarDataModel.valueChanged}": org.jboss.seam.core.LockTimeoutException: could not acquire lock on @Synchronized component: calendarDataModel
     at javax.faces.component.MethodBindingValueChangeListener.processValueChange(MethodBindingValueChangeListener.java:107)
     at javax.faces.event.ValueChangeEvent.processListener(ValueChangeEvent.java:134)
     at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:771)
     at org.richfaces.component.UICalendar.broadcast(UICalendar.java:599)
     at org.ajax4jsf.component.AjaxViewRoot.processEvents(AjaxViewRoot.java:321)
     at org.ajax4jsf.component.AjaxViewRoot.broadcastEvents(AjaxViewRoot.java:294)
     at org.ajax4jsf.component.AjaxViewRoot.processPhase(AjaxViewRoot.java:253)
     at org.ajax4jsf.component.AjaxViewRoot.processValidators(AjaxViewRoot.java:455)
     at com.sun.faces.lifecycle.ProcessValidationsPhase.execute(ProcessValidationsPhase.java:76)
     at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
     at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
     at javax.faces.webapp.FacesServlet.service(FacesServlet.java:265)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
     at org.jboss.seam.web.IdentityFilter.doFilter(IdentityFilter.java:40)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:90)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:178)
     at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290)
     at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:390)
     at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:517)
     at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:56)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:60)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.web.HotDeployFilter.doFilter(HotDeployFilter.java:53)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
     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:235)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
     at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190)
     at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433)
     at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92)
     at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)
     at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)
     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:158)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
     at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)
     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:828)
     at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:601)
     at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
     at java.lang.Thread.run(Thread.java:619)

My Classes

package org.domain.money.session;

import java.util.Calendar;

import java.util.Date;
import java.util.HashMap;
import java.util.Map;

import javax.faces.event.ValueChangeEvent;

import org.jboss.seam.ScopeType;
import org.jboss.seam.annotations.In;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.Scope;
import org.richfaces.model.CalendarDataModel;
import org.richfaces.model.CalendarDataModelItem;

/**
* @author Ilya Shaikovsky
*
*/
@Name("calendarDataModel")
@Scope(ScopeType.SESSION)
public class CalendarDataModelImpl implements CalendarDataModel {

     /*
      * (non-Javadoc)
      *
      * @see org.richfaces.component.CalendarDataModel#getData(java.util.Date[])
      */
     @In(create= true,required = false)
     private CalendarDataModelItem[] items;
     private String currentDescription;
     private String currentShortDescription;
     private Date currentDate;
     private boolean currentDisabled;

     /*
      * (non-Javadoc)
      *
      * @see org.richfaces.model.CalendarDataModel#getData(java.util.Date[])
      */
     public CalendarDataModelItem[] getData(Date[] dateArray) {
          if (dateArray == null) {
               return null;
          }
          if (items == null) {
               items = new CalendarDataModelItem[dateArray.length];
               for (int i = 0; i < dateArray.length; i++) {
                    items[i] = createDataModelItem(dateArray[i]);
               }
          }
          return items;
     }

     /**
      * @param date
      * @return CalendarDataModelItem for date
      */
     protected CalendarDataModelItem createDataModelItem(Date date) {
          CalendarDataModelItemImpl item = new CalendarDataModelItemImpl();
          Map data = new HashMap();
          data.put("shortDescription", "Nothing planned");
          data.put("description", "");
          Calendar c = Calendar.getInstance();
          c.setTime(date);
          item.setDay(c.get(Calendar.DAY_OF_MONTH));
          item.setEnabled(true);
          item.setStyleClass("rel-hol");
          item.setData(data);
          return item;
     }

     /*
      * (non-Javadoc)
      *
      * @see org.richfaces.model.CalendarDataModel#getToolTip(java.util.Date)
      */
     public Object getToolTip(Date date) {

          // TODO Auto-generated method stub
          return null;
     }

     /**
      * @return items
      */
     public CalendarDataModelItem[] getItems() {
          return items;
     }

     /**
      * @param setter
      *            for items
      */
     public void setItems(CalendarDataModelItem[] items) {
          this.items = items;
     }

     /**
      * @param valueChangeEvent
      *            handling
      */
     public void valueChanged(ValueChangeEvent event) {
          System.out.println(event.getNewValue() + "selected");
          setCurrentDate((Date) event.getNewValue());
          Calendar calendar = Calendar.getInstance();
          calendar.setTime(getCurrentDate());
          if (((HashMap) items[calendar.get(Calendar.DAY_OF_MONTH) - 1] != null)) {
               if (((HashMap) items[calendar.get(Calendar.DAY_OF_MONTH) - 1]
                         .getData()).get("description") != null) {
                    if ((String) ((HashMap) items[calendar
                              .get(Calendar.DAY_OF_MONTH) - 1].getData())
                              .get("description") != null)
                         setCurrentDescription((String) ((HashMap) items[calendar
                                   .get(Calendar.DAY_OF_MONTH) - 1].getData())
                                   .get("description"));
               }
          }
          if (((HashMap) items[calendar.get(Calendar.DAY_OF_MONTH) - 1] != null)) {
               if (((HashMap) items[calendar.get(Calendar.DAY_OF_MONTH) - 1]
                         .getData()).get("shortDescription") != null) {
                    if ((String) ((HashMap) items[calendar
                              .get(Calendar.DAY_OF_MONTH) - 1].getData())
                              .get("shortDescription") != null)
                         setCurrentShortDescription((String) ((HashMap) items[calendar
                                   .get(Calendar.DAY_OF_MONTH) - 1].getData())
                                   .get("shortDescription"));
               }
          }
     }

     /**
      * Storing changes action
      */
     public void storeDayDetails() {
          Calendar calendar = Calendar.getInstance();
          calendar.setTime(getCurrentDate());
          ((HashMap) items[calendar.get(Calendar.DAY_OF_MONTH) - 1].getData())
                    .put("shortDescription", getCurrentShortDescription());
          ((HashMap) items[calendar.get(Calendar.DAY_OF_MONTH) - 1].getData())
                    .put("description", getCurrentDescription());
     }

     /**
      * @return currentDescription
      */
     public String getCurrentDescription() {
          return currentDescription;
     }

     /**
      * @param currentDescription
      */
     public void setCurrentDescription(String currentDescription) {
          this.currentDescription = currentDescription;
     }

     /**
      * @return currentDisabled
      */
     public boolean isCurrentDisabled() {
          return currentDisabled;
     }

     /**
      * @param currentDisabled
      */
     public void setCurrentDisabled(boolean currentDisabled) {
          this.currentDisabled = currentDisabled;
     }

     /**
      * @return currentShortDescription
      */
     public String getCurrentShortDescription() {
          return currentShortDescription;
     }

     /**
      * @param currentShortDescription
      */
     public void setCurrentShortDescription(String currentShortDescription) {
          this.currentShortDescription = currentShortDescription;
     }

     /**
      * @return currentDate
      */
     public Date getCurrentDate() {
          return currentDate;
     }

     /**
      * @param currentDate
      */
     public void setCurrentDate(Date currentDate) {
          this.currentDate = currentDate;
     }

}

My page

<!DOCTYPE composition PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <ui:composition 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:rich="http://richfaces.org/rich"
      template="layout/template.xhtml">

    <ui:define name="body">
    <style>
        .header{
            font-weight:bold;
        }
        .rich-calendar-header{
            text-align:center;
        }
    </style>

    <h:form id="form">
        <rich:messages/>
        <a4j:jsFunction name="ajaxSubmit" oncomplete="#{rich:component('panel')}.show()" reRender="editContent" />
        <rich:calendar value="#{calendarBean.selectedDate}"
            popup="false" showApplyButton="false"
            cellWidth="100px" cellHeight="100px"
            boundaryDatesMode="none" showWeeksBar="false"
            dataModel="#{calendarDataModel}" onchanged="if (event.rich.date) {ajaxSubmit();}" oncurrentdateselect="return false" id="organizer" valueChangeListener="#{calendarDataModel.valueChanged}" showFooter="false">
            <f:facet name="header">
                <h:panelGroup>
                    <h:outputText value="Current Month" styleClass="header"/>
                </h:panelGroup>
            </f:facet>
            <a4j:outputPanel layout="block" id="cell" onclick="#{rich:component('organizer')}.resetSelectedDate()" style="height: 100%;">
                <h:panelGrid columns="1">
                    <h:outputText value="{day}" style="align:center"/>
                    <h:outputText value="{data.shortDescription.escapeHTML()}"/>
                    <h:outputText value="{data.description.escapeHTML()}"/>
                </h:panelGrid>
            </a4j:outputPanel>
        </rich:calendar>
    </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:"/>
                <h:inputText value="#{calendarDataModel.currentShortDescription}"/>
                <h:outputText value="Day Notes:"/>
                <h:inputTextarea value="#{calendarDataModel.currentDescription}"/>
                <a4j:commandButton value="Store" action="#{calendarDataModel.storeDayDetails}" id="storebutton" oncomplete="#{rich:component('panel')}.hide()" reRender="organizer"/>
                <button type="button" id="cancelbutton" onclick="#{rich:component('panel')}.hide()">Cancel</button>
            </h:panelGrid>
        </h:form>
    </rich:modalPanel>
      </ui:define>
</ui:composition>