In Crud edit listener, can the item be null?

Flow
1

We were suprised to catch this one in production:

crud.addEditListener(
        e -> {
              e.getItem().getId();//e.getItem returns null 
          }
        });

Cannot invoke "myModel.getId()" because the return value of "com.vaadin.flow.component.crud.Crud$EditEvent.getItem()" is null

In EditEvent, nothing says that E item can be null. Is this an obscure bug we’ve hit? Or there are legitimate cases where item can be null? It’s not a multi-user scenario, only one user at the time can edit items in that crud.

2

It could be an issue with equals/hashcode implementation in the bean class.
For example, I remember similar issues when using a stable ID and a mutable version field in equals/hashcode, having the version field updated on every save operation.

3

Indeed, tricky bug in the way we were managing in-memory the equality for items added in the crud. Thanks @marcoc_753 !