glazedlists: how to create a transformed list that has the original list items + associated derived items

Question

I have an EventList list1 of parent items.

I want to make a one-way-transform this into a TreeList in the following manner:

Some of the parent items have child items, and I need to create an intermediate list list2 of items containing parent and child, so that I can then create a TreeList from list2 (that I know how to do).

so for example, if list1 = {foo1, foo2, foo3, foo4, foo5} and foo2 is the parent of foo2a and foo2b, and foo5 is the parent of foo5a, foo5b, and foo5c, I need to somehow transform list1 into

list2 = {foo1, foo2, foo2a, foo2b, foo3, foo4, foo5, foo5a, foo5b, foo5c }.

How can I do this? I don't have much experience w/ transformed lists.

(Or can I just bypass it and turn a list of parent items into a TreeList?)

Please help, I'm having a brain cramp :/

(apologies, I posted to the glazedlists user forum yesterday but for some reason my posting permission has been screwed up and it never got sent out)

Answer 1

TreeList works best when the source list contains the leaf (child) nodes. You might get what you're looking for in CollectionList.