GWT CELLTABLE : How to add empty row in celltable with different celltype

How to add empty row in celltable with different celltype ?

4 columns present in my celltable i.e. DatePickerCell,EditTextCell,NumberCell,SelectionCell

I can able to set record values in cell with different celltype.

I want to add empty row with different cell type in celltable also want few of them editable and rest are non-editable.

I want to do MassUpdate in Celltable.So I required 1st row as empty because whenever I will change value in particular ce开发者_StackOverflow社区ll which is editable then all values in that column should be updated immediately

Suppose I edited value in edittextcell of 1st empty row then all values in same column should be edited immediately.

Any help or guidance in this matter would be appreciated