DataTableRenderer renderer = (DataTableRenderer) context.getRenderKit().getRenderer("org.primefaces.component", "org.primefaces.component.DataTableRenderer");
if(type.equals("header"))
renderer.encodeColumnHeader(context, table, column);
else if(type.equals("footer"))
renderer.encodeColumnFooter(context, table, column);
}
private ColumnGroup findGroup(Column column) {
UIComponent parent = column.getParent();