Repeating command in gwt - gwt

Question

I use flex table to show the data fetched from db. When table contains a large amount of columns it takes much time to render the flextable(I've tested it on table with 80 columns and 38 rows) and while it is not completely rendered I can not do anything with a page. So i use Schedule.get().scheduleIncremental(ReapitingCommand command) as follows:
final int WORK_CHUNK = 2;
Scheduler.get().scheduleIncremental(new RepeatingCommand() {
int rowCounter = 0;
#Override
public boolean execute() {
for (int i = rowCounter; i < rowCount; i++, rowCounter++) {
for (int j = 0; j < columnCount; j++) {
table.setText(i, j, data.get(i)[j]);
}
if (rowCounter % WORK_CHUNK == 0)
return true;
}
return false;
}
});
But if i have 9 rows and 3 columns in data object it only render 2 rows.
How I can improve its performance, because as I said earlier if have 38 rows and 80 columns it takes too much time to render all the data without scheduleIncremental. Even browser popups the window that script may have stoped responing.

Answer 1

Why don't use a CellTable instead of a FlexTable to render your data?
CellTable is supposed to be much more efficient in rendering large amounts of data compared to FlexTable.

Answer 2

For above code I would have done it this way. Get rid of the first for loop because execute() is recursive.
Scheduler.get().scheduleIncremental(new RepeatingCommand() {
int rowCounter = 0;
int rowCount = 10;
#Override
public boolean execute() {
// do some work
for (int j = 0; j < columnCount; j++) {
table.setText(i, j, data.get(i)[j]);
}
rowCounter++;
if (rowCounter >= rowCount)
return false;
return true;
}
});