How to reset SetVisibleColumn function?

If I execute the following code it will result in an error. This is because I set Visible Columns to two.
It need four before you repopulate the table. This is ok. My question,
Is there a function to reset the Visible Column list. Or should I just add another SetVisibleColumn function with all the table fields?

Chris

Table table = new Table("myTest");

table.addContainerProperty("date", Date.class, null, "Date", null, null);
table.addContainerProperty("quantity", Double.class, null, "Quantity (l)", null, null);
table.addContainerProperty("price", Double.class, null, "Price (e/l)", null, null);
table.addContainerProperty("total", Double.class, null, "Total (e)", null, null);

table.addGeneratedColumn("date",new DateColumnGenerator());
table.addGeneratedColumn("quantity",new ValueColumnGenerator("%.2f l"));
table.addGeneratedColumn("price",new PriceColumnGenerator());
table.addGeneratedColumn("total",new ValueColumnGenerator("%.2f e"));

table.setVisibleColumns(new Object[] {"date", "quantity"});

table.addGeneratedColumn("date",new DateColumnGenerator()); <- result in en error
table.addGeneratedColumn("quantity",new ValueColumnGenerator("%.2f l"));
table.addGeneratedColumn("price",new PriceColumnGenerator());
table.addGeneratedColumn("total",new ValueColumnGenerator("%.2f e"));

The problem here is not the setVisibleComlumns()-call but the fact that you are adding a generated column with an already used id.

I picked this example from the vaadin book.

In my code I use null as Id.

Chris

Using null as id probably is problematic.

As for resetting the visible columns, if nothing else helps, try table.setContainerDataSource(table.getContainerDataSource()). It does reset a lot more than just visible columns, though.