Dynamic columns with List in

Question

I\'m attempting to generate a dataTable with columns dinamycally, so I\'ve a List when a List inside of a List

Answer 1

The <p:columns value> cannot refer the <p:dataTable var>. It is technically and logically not possible to control the columns on a per-row basis. They have to be controlled on a per-table basis.

If your model guarantees that every nested list has the same size, then this should do:

<p:dataTable value="#{controlador.estadistico}" var="lista">
    <p:columns value="#{controlador.estadistico[0]}" columnIndexVar="i">
        #{lista[i]}
    </p:columns>
</p:dataTable>

See also the <p:columns> showcase.