Hello!
I want to create a dynamic set of columns inside rich:dataTable based on the data object for the current row, i.e. var variable.
a4j:repeat, rich:columns, c:forEach don't work.

I want to perform something like that:

<rich:dataTable var="entry" value="#{bean.entities}">
 <rich:columns value="#{entry.hosts}" var="host">
 <h:outputText value="#{host}"/>
 </rich:columns>
</rich:dataTable>