Hi all

I'm using richfaces library in my project and have a problem with a dynamic number of columns in the sub-tables.

For example, I have a report which contains a list of items. An item can be a row of data, or a sub-report.
If it is a sub-report I need to display it in a sub-table.
The number of columns in each sub-report may be varied and so does the number of sub-reports.

The fragment of XML code I'm using is as following

 <rich:dataTable value="#{report.items}" var="item" first="1">
 <f:facet name="header">
 <h:outputText value="#{report.reportHeader}"/>
 </f:facet>

 <rich:subTable value="#{item.items}" var="subItem" rendered="#{item.subReport}">

 <!-- Display subtable columns -->
 <rich:columns value="#{item.columns}" var="subColumn" index="idx">
 <f:facet name="header">
 <h:outputText value="#{subColumn.name}" />
 </f:facet>
 <h:outputText value="#{subItem.values[idx].value}" />
 <rich:spacer />
 </rich:columns>

 </rich:subTable>
 </rich:dataTable>

I also tried

 <rich:dataTable value="#{report.items}" var="item" first="1">
 <f:facet name="header">
 <h:outputText value="#{report.reportHeader}"/>
 </f:facet>

 <rich:column rendered="#{item.subReport}">
 <rich:dataTable value="#{item.items}" var="subItem">

 <!-- Display subtable columns -->
 <rich:columns value="#{item.columns}" var="subColumn" index="idx">
 <f:facet name="header">
 <h:outputText value="#{subColumn.name}" />
 </f:facet>
 <h:outputText value="#{subItem.values[idx].value}" />
 <rich:spacer />
 </rich:columns>

 </rich:dataTable>
 </rich:column>
 </rich:dataTable>

But in both two cases the number of columns in sub-table is not displayed correctly.

Can anyone help? Any idea is appreciated.
Thanks in advance.