Remove Children of TreeTable

Celvin Kattookaran

I'm trying to remove all children of parent in a TreeTable.
I can get the child ids, however it only removes the first child. (Table repaints and I guess I don't have that id anymore)

Collection<?> childrenIDs = expgrpgrid.getChildren(target);
                   for (java.util.Iterator<?> i = childrenIDs.iterator(); i.hasNext();){
                       expgrpgrid.removeItem(i.next()); 
                   }

Is there a way to do this?

Thank you for the help.

Alejandro Duarte

Hi,

I think it has to be with the collection size. Anyway, if you are using Java 8, you can do:

childrenIDs.stream().forEach(expgrpgrid::removeItem);

If not, you have to do something like:

Object[] toRemove = childrenIDs.toArray();
int size = toRemove.length;

for (int i = 0; i < size; i++) {
    expgrpgrid.removeItem(toRemove[i]);
}

Hope that helps!

Celvin Kattookaran

@Alejandro Thanks a lot, that did the trick.

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Remove Children of TreeTable

Vaadin lets you build secure, UX-first PWAs entirely in Java.
Free ebook & tutorial.