Data tables and insertRow() method

Question

I've seen this question a number of times and no answers yet. Is it possible to create a CRUD page with a data table, without creating additional fields outside of the table, I mean, I saw an example with a single page tabular CRUD, but in order to insert a new row, I had to type the new values outside the table, ain't ther a way to do it with the table only? I've tried appendRow, insertRow (which would be the ideal way, since when a table is paginated it doesn't work). I'm sure it shouldn't be that hard, i'm struggling with this for some days now. Could anyone help me? Thanks.
My scenario:
I have a dataprovider, inside my page, that extends ObjectListDataProvider and is set to a class defined by me -> .setObjectClass(UfDTO.class)
I fill the dataProvider list through another list fetched from the sessionbean:
.setList(getSessioBean1.getUfList());
I can delete rows from a checkbox I put into the data table, refresh the data and everything works ok, what i am trying to do, but doesn't work is:
ufListDataProvider.cursorFirst();
RowKey first = ufListDataProvider.getCursorRow();
ufListDataProvider.canInsertRow(first); => returns false!
If I try the appendRow() it works, but once I try to save, the values entered on the data tables field are lost.

Answer 1

Yes, I've already looked at the tutorials, there, however, the cachedRowSet is used, and the db table is directly bound to the jsp table, but I don't this tight coupling.
I can call the appendRow method, however when i call the setValue() method on my properties, they remain null. Just to make thigs clearer, I didn't bind my Hibernate entities to the dataProvider, I used another object that is transformed into one or more entities.
That's what I have:
an POJO named UfDTO
public class UfDTO() {
private Integer id;
private String name;
...(getters and setters)
on the SessionBean1
ObjectListDataProvider listDataProvider...
listaDataProvider.setObjectType('com.campo.dto.UfDTO);
public String btnAdd_action(){
if(listDataProvider.canAppendRow()){
RowKey rk = ufListDataProvider.appendRow();
ufListDataProvider.setValue("id", new Integer(0));
ufListDataProvider.setValue("id", new String());
return null;
The code runs fine, with no exceptions, and when I am debugging I can see that after the call to appendRow() a new object is created under the 'appends' properties of the listDataProvider, but even after the calls to setValue, the values of the UfDTO properties into the appends remain null.