TreeGrid - columns lazy loading

Vaadin 6 / 7 / 8
1

Hi,

is there a possibility to lazy loading the actually not visible columns in a TreeGrid? Because, I have a very big dataset (~1 million rows & several thousand columns) and the load time is too long. It kills the UI…
I want to load datas, only if I’m scrolling the treegrid.

How can I lazy loading the columns or what is the recommended method?

Thanks

2

Hi,

not out of the box. Unfortunately I think Grid is generally only designed for a large number rows, not columns - several thousand columns sounds like it won’t work. You’ll need to look into Grid internals if you want to make that happen, and I suspect it won’t be very simple.

-Olli

3

Probably still no easy possibility to lazy load columns right? Rendering performance is pretty bad with > 20 (invisible) columns.

4

Unfortunately right.

-Olli