Основные: DataTable внутри AccordionPanel выбрасывает NullPointerException

Question

У меня есть DataTable поверхности в AccordionPanel с динамическим количеством вкладок. DataTable можно отсортировать по каждому столбцу, щелкнув заголовок столбца. DataTable генерирует исключение NullPointerException в классе DataTable класса Primefaces при обновлении строки. Ошибка возникает только после того, как таблица была отсортирована раньше. Я проверил ту же таблицу за пределами аккордеона, и она не показывает ошибку.

Что я делаю неправильно?

Мой XHTML:

<ui:define name="content"> 
    <h:form id="contentForm"> 

     <p:accordionPanel id="wearDataAccordion" value="#{wearDataBean.wearDataTypes}" var="type" multiple="true"> 
     <p:tab title="#{wearDataBean.getAggregateTypeLabel(type)}"> 

      <p:dataTable width="100%" var="wearData" value="#{wearDataBean.getWearData(type)}" sortBy="#{wearData.aggregate.sequence}" sortOrder="ASCENDING" 
         scrollable="false" rowStyleClass="" styleClass="" emptyMessage="#{messages['lbl.no.data']}"> 

      <p:column headerText="#{messages['lbl.weardata.label']}" sortBy="#{wearData.aggregate.sequence}" width="15%"> 
       <p:outputLabel value="#{wearData.label}"/> 
      </p:column> 

      <p:column styleClass="column-numerical-right" headerText="#{messages['lbl.weardata.value']}" 
               sortBy="#{wearDataBean.getValue(wearData)}" width="5%"> 
       <p:outputLabel value="#{wearDataBean.getValue(wearData)}" style="float:right"/> 
      </p:column> 

      <p:column headerText="#{messages['lbl.weardata.unit']}" sortBy="#{wearData.unitId}" width="10%"> 
       <p:outputLabel value="#{wearDataBean.getUnitLabel(wearData.unitId)}"/> 
      </p:column> 

      <p:column headerText="#{messages['lbl.weardata.lastUpdate']}" sortBy="#{wearData.lastUpdate}" width="20%"> 
       <p:outputLabel value="#{wearData.lastUpdate}"> 
       <f:convertDateTime dateStyle="medium" timeStyle="medium" type="both" timeZone="#{localeData.timeZoneId}"/> 
       </p:outputLabel> 
      </p:column> 

      <p:column styleClass="column-button-icon" headerText="#{messages['lbl.dest.actions']}" width="7%"> 
       <eae:commandButton icon="/resources/images/ui_content_dest_service.svg" styleClass="" svgStyleClass="ui-svg-button-icon-only-svg-size" 
               title="#{messages['lbl.weardata.reset']}" action="#{wearDataBean.reset(wearData)}" global="false"> 
       <p:confirm header="#{messages['lbl.weardata.reset']}" message="#{messages['lbl.weardata.confirm.question']}" icon="ui-icon-alert" /> 
       </eae:commandButton> 
      </p:column> 

      </p:dataTable> 

     </p:tab> 
     </p:accordionPanel> 


     <p:remoteCommand name="updateBean" actionListener="#{wearDataBean.updateData()}" global="false"/> 
    </h:form> 

    <p:socket onMessage="handleWearDataMessage" channel="#{messagePublisher.wearDataUpdateChannelName}"/> 
    <script type="text/javascript"> 
     function handleWearDataMessage(data) { 
     var jsonString = JSON.stringify(data); 
     updateBean([{name: 'data', value: jsonString}]); 
     } 
    </script> 

    </ui:define> 

Исключение он бросает это:

13:20:47,060 [SEVERE] [org.primefaces.application.exceptionhandler.PrimeExceptionHandler] (default task-7) null: java.lang.NullPointerException 
    at org.primefaces.component.datatable.DataTable.findColumnInGroup(DataTable.java:903) [primefaces-5.1.14.jar:5.1.14] 
    at org.primefaces.component.datatable.DataTable.findColumn(DataTable.java:894) [primefaces-5.1.14.jar:5.1.14] 
    at org.primefaces.component.datatable.DataTable.getSortColumn(DataTable.java:1401) [primefaces-5.1.14.jar:5.1.14] 
    at org.primefaces.component.datatable.feature.SortFeature.singleSort(SortFeature.java:136) [primefaces-5.1.14.jar:5.1.14] 
    at org.primefaces.component.datatable.DataTableRenderer.preRender(DataTableRenderer.java:109) [primefaces-5.1.14.jar:5.1.14] 
    at org.primefaces.component.datatable.DataTableRenderer.encodeEnd(DataTableRenderer.java:83) [primefaces-5.1.14.jar:5.1.14] 
    at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:919) [jboss-jsf-api_2.2_spec-2.2.8.jar:2.2.8] 
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1863) [jboss-jsf-api_2.2_spec-2.2.8.jar:2.2.8] 
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859) [jboss-jsf-api_2.2_spec-2.2.8.jar:2.2.8] 
    at org.primefaces.component.accordionpanel.AccordionPanelRenderer.encodeTab(AccordionPanelRenderer.java:226) [primefaces-5.1.14.jar:5.1.14] 
    at org.primefaces.component.accordionpanel.AccordionPanelRenderer.encodeTabs(AccordionPanelRenderer.java:171) [primefaces-5.1.14.jar:5.1.14] 
    at org.primefaces.component.accordionpanel.AccordionPanelRenderer.encodeMarkup(AccordionPanelRenderer.java:103) [primefaces-5.1.14.jar:5.1.14] 
    at org.primefaces.component.accordionpanel.AccordionPanelRenderer.encodeEnd(AccordionPanelRenderer.java:76) [primefaces-5.1.14.jar:5.1.14] 
    at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:919) [jboss-jsf-api_2.2_spec-2.2.8.jar:2.2.8] 
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1863) [jboss-jsf-api_2.2_spec-2.2.8.jar:2.2.8] 
    at com.sun.faces.context.PartialViewContextImpl$PhaseAwareVisitCallback.visit(PartialViewContextImpl.java:582) [jsf-impl-2.2.8-jbossorg-1.jar:] 
    at com.sun.faces.component.visit.PartialVisitContext.invokeVisitCallback(PartialVisitContext.java:183) [jsf-impl-2.2.8-jbossorg-1.jar:] 
    at org.primefaces.component.api.UITabPanel.visitTree(UITabPanel.java:948) [primefaces-5.1.14.jar:5.1.14] 
    at javax.faces.component.UIComponent.visitTree(UIComponent.java:1700) [jboss-jsf-api_2.2_spec-2.2.8.jar:2.2.8] 
    at javax.faces.component.UIForm.visitTree(UIForm.java:371) [jboss-jsf-api_2.2_spec-2.2.8.jar:2.2.8] 
    at javax.faces.component.UIComponent.visitTree(UIComponent.java:1700) [jboss-jsf-api_2.2_spec-2.2.8.jar:2.2.8] 
    at javax.faces.component.UIComponent.visitTree(UIComponent.java:1700) [jboss-jsf-api_2.2_spec-2.2.8.jar:2.2.8] 
    at javax.faces.component.UIComponent.visitTree(UIComponent.java:1700) [jboss-jsf-api_2.2_spec-2.2.8.jar:2.2.8] 
    at com.sun.faces.context.PartialViewContextImpl.processComponents(PartialViewContextImpl.java:403) [jsf-impl-2.2.8-jbossorg-1.jar:] 
    at com.sun.faces.context.PartialViewContextImpl.processPartial(PartialViewContextImpl.java:322) [jsf-impl-2.2.8-jbossorg-1.jar:] 
    at org.primefaces.context.PrimePartialViewContext.processPartial(PrimePartialViewContext.java:60) [primefaces-5.1.14.jar:5.1.14] 
    at javax.faces.context.PartialViewContextWrapper.processPartial(PartialViewContextWrapper.java:219) [jboss-jsf-api_2.2_spec-2.2.8.jar:2.2.8] 
    at javax.faces.component.UIViewRoot.encodeChildren(UIViewRoot.java:1004) [jboss-jsf-api_2.2_spec-2.2.8.jar:2.2.8] 
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1856) [jboss-jsf-api_2.2_spec-2.2.8.jar:2.2.8] 
    at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:430) [jsf-impl-2.2.8-jbossorg-1.jar:] 
    at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:133) [jsf-impl-2.2.8-jbossorg-1.jar:] 
    at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:337) [jboss-jsf-api_2.2_spec-2.2.8.jar:2.2.8] 
    at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:337) [jboss-jsf-api_2.2_spec-2.2.8.jar:2.2.8] 
    at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:337) [jboss-jsf-api_2.2_spec-2.2.8.jar:2.2.8] 
    at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120) [jsf-impl-2.2.8-jbossorg-1.jar:] 
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) [jsf-impl-2.2.8-jbossorg-1.jar:] 
    at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:219) [jsf-impl-2.2.8-jbossorg-1.jar:] 
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:647) [jboss-jsf-api_2.2_spec-2.2.8.jar:2.2.8] 
    at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final] 
    at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:130) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final] 
    at io.undertow.websockets.jsr.JsrWebSocketFilter.doFilter(JsrWebSocketFilter.java:129) [undertow-websockets-jsr-1.1.0.Final.jar:1.1.0.Final] 
    at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:60) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final] 
    at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:132) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final] 
    at io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:85) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final] 
    at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:61) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final] 
    at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final] 
    at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78) 
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) [undertow-core-1.1.0.Final.jar:1.1.0.Final] 
    at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final] 
    at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:56) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final] 
    at io.undertow.server.handlers.DisableCacheHandler.handleRequest(DisableCacheHandler.java:33) [undertow-core-1.1.0.Final.jar:1.1.0.Final] 
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) [undertow-core-1.1.0.Final.jar:1.1.0.Final] 
    at io.undertow.security.handlers.AuthenticationConstraintHandler.handleRequest(AuthenticationConstraintHandler.java:51) [undertow-core-1.1.0.Final.jar:1.1.0.Final] 
    at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:45) [undertow-core-1.1.0.Final.jar:1.1.0.Final] 
    at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:63) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final] 
    at io.undertow.servlet.handlers.security.ServletSecurityConstraintHandler.handleRequest(ServletSecurityConstraintHandler.java:56) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final] 
    at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:58) [undertow-core-1.1.0.Final.jar:1.1.0.Final] 
    at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:70) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final] 
    at io.undertow.security.handlers.SecurityInitialHandler.handleRequest(SecurityInitialHandler.java:76) [undertow-core-1.1.0.Final.jar:1.1.0.Final] 
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) [undertow-core-1.1.0.Final.jar:1.1.0.Final] 
    at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61) 
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) [undertow-core-1.1.0.Final.jar:1.1.0.Final] 
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) [undertow-core-1.1.0.Final.jar:1.1.0.Final] 
    at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:261) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final] 
    at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:247) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final] 
    at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:76) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final] 
    at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:166) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final] 
    at io.undertow.server.Connectors.executeRootHandler(Connectors.java:197) [undertow-core-1.1.0.Final.jar:1.1.0.Final] 
    at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:759) [undertow-core-1.1.0.Final.jar:1.1.0.Final] 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_67] 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_67] 
    at java.lang.Thread.run(Thread.java:745) [rt.jar:1.7.0_67] 

updateData() метод от подложки боб выглядит следующим образом:

/** 
    * Refreshes the data within this bean 
    */ 
    public void updateData() { 
    this.logger.debug("Ajax listener method for wearDataUpdate called!"); 

    // do update data 
    boolean refreshAll = false; 
    boolean refresh = false; 
    UpdateEvent<Integer> updateEvent = this.extractRequestData(new TypeToken<UpdateEvent<Integer>>() { /* ignored */ }.getType(), "data"); 
    if (updateEvent.getType().equals(Type.CREATE)) { 
     refresh |= this.addWearDataToDomainData(updateEvent.getData()); 
    } else if (updateEvent.getType().equals(Type.DELETE)) { 
     refresh |= this.removeWearDataFromDomainData(updateEvent.getData()); 
    } else { 
     refreshAll = true; 
    } 

    // delete old data if refresh all is set 
    if (refreshAll) { 
     this.wearDataListsByType = null; 
    } 

    // update table in view 
    if (refresh || refreshAll) { 
     Ajax.update("contentForm:wearDataAccordion"); 
    } 
    } 

---

PrimeFaces 5.1 .14, Омнифак es 2.0, WildFly 8.2.0

Answer 1

Решение должно использовать widgetVar="data" внутри datatable. Необходимо, чтобы Javascript узнал этот идентификатор.

<p:dataTable width="100%" var="wearData" value="#{wearDataBean.getWearData(type)}" sortBy="#{wearData.aggregate.sequence}" sortOrder="ASCENDING" 
        scrollable="false" rowStyleClass="" styleClass="" emptyMessage="#{messages['lbl.no.data']}" widgetVar="data"> 

Intro To PrimeFaces widgetVar

Answer 2

У меня была такая же проблема в отношении сортировки DataTables динамически генерируемых в закладках из accordionPanel и widgetVar решение не исправить мою проблему.

Решение, которое сделал сортировочную работу должен был включать в себя p:columnGroup (не так полезно, помимо создания вещей работают)

<p:columnGroup type="header"> 
    <p:row> 
     <p:column headerText="Column 1">...</p:column> 
     ... 
    </p:row> 
</p:columnGroup>