Showing non hierarchical model in a jtree

Question

Hi all,
I have the following model:
- 3 classes:
* A Day, consists of a number of Events
* A Project, also consists of a number of Events, a Project has 1 or 0
parent Projects and 0 or multiple childprojects.
* An Event is always linked to 1 Day and 1 Project
I want to create the following tree-structure:
root
+-- Day1
####+-- Project1
####+-- Project2
########+-- Project2_1
########+-- Project2_2
############+-- Event1
############+-- Event2
I have created a custom model to display this. The problem is the following. In the model (which implements the TreeModel), there is a method getChild() to retreive and display the children. Obviously, the events underneath a project (e.g. Project2_2) should only be shown if the following is true:
- event belongs to Project2_2
- event belongs to Day1
The first condition is easy, the last condition is causing the problem. How do I know I am underneath Day1?
regards,
Kenneth

Answer 1

westelinckk,
Your diagram leaf-indentation seems to indicate that, say, Day1 contains Project1, but you've stipulated only that "* A Day, consists of a number of Events". If Days may contain projects, your custom model needs to reflect that.
Also, you say:
Obviously, the events underneath a project (e.g. Project2_2) should only be shown if the following is true:
- event belongs to Project2_2
- event belongs to Day1
I suppose you mean furthermore than both conditions be true. From your post'd title I suspect that an Event may belong to a Day and to a Project, with no implied relationship between the Day and the Project. In that case indenting Project1 under Day1 is misleading.
Incidentally, when working with trees I suggest you use a custommodel-to-treemodel adapter, rather than making your custom model implement treemodel. That way your custom model remains the same, and you write an adapter per view type.
--A