Error at Insert new Line in the Table (ITERATOR)

Question

            public String novaLinhaTabela() {
             BindingContainer bindings = BindingContext.getCurrent().getCurrentBindingsEntry();
             //access the name of the iterator the table is bound to. Its "allDepartmentsIterator"
             //in this sample
             DCIteratorBinding dciter = (DCIteratorBinding) bindings.get("crudArquivosLinhasColunas_parametersIterator");
             //access the underlying RowSetIterator //crudArquivoLinhasColunasControlIterator crudArquivosLinhasColunas_parametersIterator
             RowSetIterator rsi = dciter.getRowSetIterator();
             System.out.println("RSI " + rsi);
             //get handle to the last row
             Row lastRow = rsi.last();
             //obtain the index of the last row
             int lastRowIndex = rsi.getRangeIndexOf(lastRow);
             //create a new row
             Row newRow = rsi.createRow();
             //initialize the row
             newRow.setNewRowState(Row.STATUS_INITIALIZED);
             //add row to last index + 1 so it becomes last in the range set
             rsi.insertRowAtRangeIndex(lastRowIndex +1, newRow);
             //make row the current row so it is displayed correctly
             rsi.setCurrentRow(newRow);             
                ADFUtils.addPartialTarget(this.tabelaColunaLinha);
             return null;
This line have the return of NULL POINTER EXCEPTION, I am not able to solve.
   RowSetIterator rsi = dciter.getRowSetIterator();
Someone could help me?

Answer 1

Gijith,
You know how to add a row in the table by clicking on the? I can not, I am new in ADF, I struggle to ride it!
Could you help me friend?