Lazy Loading for Treetable

Vaadin 6 / 7 / 8 Framework Data Binding
1

For my application I need a Treetable, where the child items are loaded lazyily when the user clicks on the expand icon.

For each “parent” entry in the Treetable, I know the exact number of child items in advance (if this information is relevant to you).

Is such a treetable lazy loading possible with vaadin?

2

Well, you can always listen for node expand and collapse events and add and remove the items in the listener. See
this example
.

Note that if the TreeTable is editable, you could have performance issues because of
#17838
, but if it’s not editable, that’s not a problem.