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Problem with rich:listShuttle

 
Naresh Kavala
Greenhorn
Posts: 23
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Hi,



I have been using richfaces listShuttle without any issue so far. Recently, have modified that I am updating sourceValue attribute of listShuttle basing on the search criteria. After this modification now and then while doing copy, remove
or removeAll or Copy All, getting following exception. Could anybody suggest, what is the possible cause for this exception.


;09:29:46;509; ERROR seam.web.ExceptionFilter;ExceptionFilter.java:doFilter():69) - exception root cause

java.lang.NullPointerException

at org.ajax4jsf.webapp.FilterServletResponseWrapper$ServletStringWriter.write(FilterServletResponseWrapper.java:319)

at java.io.Writer.write(Writer.java:175)

at java.io.PrintWriter.write(PrintWriter.java:412)

at java.io.PrintWriter.write(PrintWriter.java:429)

at fr.xebia.servlet.filter.ExpiresFilter$XPrintWriter.write(ExpiresFilter.java:919)

at com.sun.facelets.util.DevTools.debugHtml(DevTools.java:111)

at com.sun.facelets.FaceletViewHandler.handleRenderException(FaceletViewHandler.java:692)

at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:660)

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.BaseFilter.doFilter(BaseFilter.java:530)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at fr.xebia.servlet.filter.ExpiresFilter.doFilter(ExpiresFilter.java:1243)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

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.MultipartFilter.doFilter(MultipartFilter.java:85)

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:206)

at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290)

at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:388)

at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:515)

at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:60)

at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)

at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58)

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:230)

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)

at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:182)

at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433)

at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)

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:241)

at org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:437)

at org.apache.coyote.ajp.AjpProtocol$AjpConnectionHandler.process(AjpProtocol.java:381)

at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)

at java.lang.Thread.run(Thread.java:619)



Code :


<h:panelGrid rendered="#{appAdminHelper.searchbuttonenable}">



<hutputText value="Search Component" style="font-weight:bold" />

<rich:spacer />

<h:inputText value="#{appAdminHelper.searchComp}"

id="searchStrInput">

<a4j:support event="onblur" reRender="searchStrInput" ajaxSingle="true"/>

</h:inputText>

</h:panelGrid>

<h:panelGrid columns="1" rendered="#{appAdminHelper.searchbuttonenable}">

<rich:spacer height="20px"/>

<a4j:commandButton action="#{appAdminHelper.searchComponents}"

styleClass="addContactButton" value="Search" ajaxSingle="true"

status="waitStatus" reRender="componentsInstances"

oncomplete="#{facesContext.maximumSeverity == null ? 'Richfaces.hideModalPanel(\'messagesPanel\');'

: 'Richfaces.showModalPanel(\'messagesPanel\');'}" />

</h:panelGrid>

</h:panelGrid>

</a4j:region>

<h:panelGrid id="componentsInstances">

<a4jutputPanel id="listshuttleWrapper">

<rich:listShuttle

sourceValue="#{appAdminHelper.componentInstances}"

targetValue="#{appAdminHelper.mappedComps}" listsHeight="250"

sourceListWidth="200" targetListWidth="200"

sourceCaptionLabel="UnMapped Components"

targetCaptionLabel="Mapped Components" id="listshuttle" var="i">

<rich:column>

<hutputText value="#{i}" />

</rich:column>

<a4j:support event="onlistchanged" reRender="componentsInstances,listshuttle"/>

</rich:listShuttle>

</a4jutputPanel>

</h:panelGrid>
 
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