TableSorter class never ever calls getModelToView()

Question

I am using TableSorter class to sort tables. There is a piece of optimization code that never gets called: getModelToView(). For that method to be called a check is performed (modelToView != null). But modelToView is assigned inside that method! This causes a single cell update to trigger fireTableDataChanged(). Is that a known bug? Is there a fix?

Answer 1

I see what you mean.. you're right, it seems like modelToView will always be null.
I found another bug.. when mouse is clicked on the tableheader area where it doesn't have any column (when table is stretched it can have no column there) , columnModel.getColumnIndexAtX(e.getX()) returns -1, and if the check there is not added, then get a runtime out-of-bounds exception on the following line columnModel.getColumn(viewColumn).getModelIndex() because viewColumn is set to -1. See the code snippet below:
public void mouseClicked(MouseEvent e) {
            JTableHeader h = (JTableHeader) e.getSource();
            TableColumnModel columnModel = h.getColumnModel();
            int viewColumn = columnModel.getColumnIndexAtX(e.getX());
            if(viewColumn == -1) {  // added!
                return;
            int column = columnModel.getColumn(viewColumn).getModelIndex();