Problem in DataTable List Iteration

[Rakesh Guggilam]

I am facing a problem with dataTable iteration in xhtml page.
I have a List which consist of VO’s (List<VO>). This VO has different List<String>.

Example :
Class VO{
List1<String>
List2<List<String>>
}

When I am trying to display the lists in the VO using rich:dataTable, it’s not displaying. But if the VO has strings, its displaying. Please help on this.

I am displaying like this.

<rich:dataTable value="#{bean.voList}" var="vo">
       <rich:column>
<rich:dataTable value="#{vo.List2}" var="rowVal">
               <rich:columns value="#{vo.List1}" var="columnVal" index="index">
                              <f:facet name = "header">
                                               <h:outputText value="#{columnVal}"/>
                               </f:facet>
                                               <h:outputText value="#{rowVal[index]}"/>
                                               </rich:columns>
                               </rich:dataTable>
               </rich:column>
</rich:dataTable>

If the value in the rich datatable is taken from parameter var(from the nested table), facing this problem. If we take the value directly instead of vo.List2 from the bean(example: bean.voList1), I am not facing this problem. But this wont benefit for displaying nested datatables.

Please help me how to display nested datatables