p：dataTablefilteredValue始终为null

Question

我有以下代码：

<h:form enctype="multipart/form-data">
    <p:dataTable 
            var="report" 
            value="#{businessDomain.value.reportEntities}" 
            style="padding:0px; margin:0px; border:0px;"
            filteredValue="#{businessDomain.value.filteredReportEntities}" 
            scrollable="true" scrollHeight="200" paginator="false" rows="999"
            rowKey="#{report.id}" rowIndexVar="rowIndex" selection="#{reportController.entity}" selectionMode="single">
        <p:ajax event="rowSelect" listener="#{reportController.onRowSelect}" update="@(form)"/>
        <p:column name="name" filterBy="#{report.name}" filterMatchMode="contains">
            <tp:outputText object="#{report}"/>
            <h:outputText value=" (#{myWithFailedStatusI18nCategoryModel.i18nCodeMap[report.status]})" rendered="#{report.status != 'A'}"/>
        </p:column>
        <p:column name="button" style="width:20px;">
            <p:commandButton update="@(form)" action="#{controller.getPathToDetailForm}"
                    icon="ui-icon-wrench" styleClass="tpTableButton"
                    rendered="#{reportController.isEntityUpdateable and  organizationController.authenticatedUserOrganization.id == report.organization.id}">
                <f:setPropertyActionListener target="#{reportController.entity}" value="#{report}"/>    
            </p:commandButton>
        </p:column>
    </p:dataTable>
</h:form>

在该视图的控制器中，我有一个类（在值businessDomain.value的后面）：

public class ReportCategory{
   ...
   private List<ReportEntity> reportEntities;
   private List<ReportEntity> filteredReportEntities;
   ...

   public List<ReportEntity> getReportEntities() {
       return reportEntities;
   }

   public List<ReportEntity> getFilteredReportEntities() {
      getLogger().info("getFilter called")
      return filteredReportEntities;
   }

   public void setFilteredReportEntities(List<ReportEntity> filteredReportEntities) {
      getLogger().info("setFilter called: "+filteredReportEntities);
      this.filteredReportEntities = filteredReportEntities;
   }
}

不过滤所有内容的初始格式就可以了。.实体以正确的方式显示。但是，如果我在过滤器中键入内容，则会得到一个getFilter和setFilter调用..其中setFilter参数值始终为null：

getFilter called
setFilter called: null

我一直遵循素数示例https://www.primefaces.org/showcase/ui/data/datatable/filter.xhtml

（我使用的是Primefaces 5.3.14） 我发现了这个问题，但由于我没有太大帮助 filterValue for a dataTable in Primefaces 5.3 always null