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https://issues.apache.org/jira/browse/TOMAHAWK-779?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12462454
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Marco Beelen commented on TOMAHAWK-779:
---------------------------------------
We are using server-site state saving
> ExcelExportPhaseListener throws NullPointerException
> ----------------------------------------------------
>
> Key: TOMAHAWK-779
> URL: https://issues.apache.org/jira/browse/TOMAHAWK-779
> Project: MyFaces Tomahawk
> Issue Type: Bug
> Affects Versions: 1.1.5-SNAPSHOT
> Environment: JDK 1.5.0_07, Tomcat 5.5.12, MyFaces Core 1.13, MyFaces
> Tomahawk 1.1.5-SNAPSHOT, Myfaces Tomahawk Sandbox 1.1.5-SNAPSHOT.
> com.sun.facelets:jsf-facelets 1.1.11
> Reporter: Marco Beelen
> Assigned To: Cagatay Civici
>
> On a page in my webapp I use the extDataTable of tomahawk including paging
> and sorting. I would like to use the excelExport-component to generate an
> excel-file containing the table.
> The page renders oke, but when I click on the commandButton an new window
> opens, within which the same page is being shown.
> In the logfile of my application I see the following stacktrace:
> 2006-11-14 17:42:40,193 ERROR lifecycle.PhaseListenerManager - Exception in
> PhaseListener RESTORE_VIEW(1) afterPhase
> java.lang.NullPointerException
> at
> org.apache.myfaces.custom.excelexport.ExcelExportPhaseListener.generateExcel(ExcelExportPhaseListener.java:104)
> at
> org.apache.myfaces.custom.excelexport.ExcelExportPhaseListener.afterPhase(ExcelExportPhaseListener.java:57)
> at
> org.apache.myfaces.lifecycle.PhaseListenerManager.informPhaseListenersAfter(PhaseListenerManager.java:89)
> at
> org.apache.myfaces.lifecycle.LifecycleImpl.restoreView(LifecycleImpl.java:181)
> at
> org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:66)
> at javax.faces.webapp.FacesServlet.service(FacesServlet.java:137)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
> ....... [ 20 more ]
> I'm using com.sun.facelets.FaceletViewHandler as the ViewHandler for my
> jsf-application.
> The code of my xhtml page is shown below:
> <ui:component
> 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:t="http://myfaces.apache.org/tomahawk";
> xmlns:s="http://myfaces.apache.org/sandbox";>
> <h:form id="selectMarketForm">
> <t:dataTable
> value="#{marketEditBean.markets}"
> var="market" rows="10" id="marketList"
> sortColumn="#{marketEditBean.sortColumn}"
> sortAscending="#{marketEditBean.sortAscending}"
> preserveDataModel="false"
> preserveSort="true">
>
> <t:column sortable="true">
> <f:facet name="header">
> <t:commandSortHeader columnName="id"
> arrow="true" propertyName="id">
> <h:outputText value="Id"/>
> </t:commandSortHeader>
> </f:facet>
> <h:outputText value="#{market.id}" />
> </t:column>
>
> <t:column sortable="true" >
> <f:facet name="header">
> <t:commandSortHeader
> columnName="description" arrow="true" propertyName="description">
> <h:outputText value="Description"/>
> </t:commandSortHeader>
> </f:facet>
> <h:commandLink action="#{marketEditBean.select}"
> value="#{market.description}" immediate="true">
> <t:updateActionListener
> property="#{marketEditBean.market}" value="#{market}" />
> </h:commandLink>
> </t:column>
>
> </t:dataTable>
> <h:panelGrid columns="1" styleClass="scrollerTable2"
> columnClasses="standardTable_ColumnCentered" >
> <t:dataScroller id="scroll_1"
> for="marketList"
> fastStep="10"
> pageCountVar="pageCount"
> pageIndexVar="pageIndex"
> styleClass="scroller"
> paginator="true"
> paginatorMaxPages="9"
> paginatorTableClass="paginator"
> paginatorActiveColumnStyle="font-weight:bold;">
> <f:facet name="first" >
> <t:graphicImage url="images/arrow-first.gif" />
> </f:facet>
> <f:facet name="last">
> <t:graphicImage url="images/arrow-last.gif" />
> </f:facet>
> <f:facet name="previous">
> <t:graphicImage url="images/arrow-previous.gif" />
> </f:facet>
> <f:facet name="next">
> <t:graphicImage url="images/arrow-next.gif" />
> </f:facet>
> <f:facet name="fastforward">
> <t:graphicImage url="images/arrow-ff.gif" />
> </f:facet>
> <f:facet name="fastrewind">
> <t:graphicImage url="images/arrow-fr.gif" />
> </f:facet>
> </t:dataScroller>
> </h:panelGrid>
> <s:excelExport for="marketList">
> <h:commandButton value="Export to excel" />
> </s:excelExport>
> </h:form>
> </ui:component>
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