difference between ListView and DefaultDataTable

[dvd]

Hello:

When I use ListView with each row having an "Edit" link
I use new Link() { callback handler), which is very handy.
How to do the same in DefaultDataTable?
I tried to use 
 new AbstractDataColumn {
    populateItem{ 
        item.add(new Link(..) { callback}

but it would not work.  From what I read, a panel has to be used,
Can it be done?  

Thanks