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Vaadin Forum4. Other

Sorting a tree

Dani Pardo
10 years ago Mar 22, 2012 7:49am

Hi, I'm using Vaadin 6.7, and I have a tree of strings which needs to be sorted in a special way. I have created a class that implements ItemSorter, and I add it like this:

HierarchicalContainer beans = new HierarchicalContainer();
  Tree subscriberTree = new Tree();
  subscriberTree.setImmediate(true);
  beans = this.generarContainer(subscribers);
  subscriberTree.setContainerDataSource(beans);
  subscriberTree.setSelectable(true);
[b]  beans.setItemSorter(new MySorter());[/b]

But the compare() method in MySorter never gets invoked. Is there something I'm doing wrong?

Last updated on Mar, 22nd 2012
Teemu Pöntelin
10 years ago Mar 22, 2012 9:22am

Dani Pardo: But the compare() method in MySorter never gets invoked. Is there something I'm doing wrong?

Hi,

are you calling the sort method on your HierarchicalContainer anywhere in your code? You should call the method to explicitly trigger sorting on the container.

Last updated on Mar, 22nd 2012
Dani Pardo
10 years ago Mar 22, 2012 10:28am

Hi Teemu, and thanks, that seems to work now. At least the compare method gets called.
Although I still don't get how to call the sort() method in the container, why do we have to pass the array of propertyIds and another array of booleans? Shouldn't it just sort them all (i.e a method sort with no parameters)?

Cheers,

Last updated on Mar, 22nd 2012
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