I'm using a extendendDataTable, and i don't know how to get the row that the client choose
I used the next code with scrollableDataTable:

public String takeSelection() {
 getSelectedSectors().clear();
 Iterator<Object> iterator = getSelection().getKeys();
 while (iterator.hasNext()){
 SimpleRowKey key = (SimpleRowKey) iterator.next();
 getSelectedSectors().add((Sector) listarObjetos().get(key.intValue()));
 }
 return null;
 }