Store Data in Tree Node

[paresh doshi]

Hi,

I am using struts framework in my project... I get the result set from database. I want to store it in a tree like data structure.. I want to set the parent and child nodes.. Is there any api available in struts that allow me to save the data in form of tree structure...

Please help...

[Merrill Higginson]

As I see it, the best option would be to create your own custom classes that map to the tree-structured model you are trying to create. For example, if you are modeling a company's chain-of-command organizational chart, you could create the following class:

public class Position {
  private String positionName;
  private Employee positionHolder;
  private Position supervisor
  private List<Position> subordinates;
  // getters and setters
}

Using a custom class like this to populate a tree structure is generally much better than using some generic tree/node classes because it's easier to read and understand what the organization is.

If you then want to display a tree structure, I'd suggest using one of the many JavaScript tree creation frameworks out there, such as treeview. You can then write code that will translate your model into the necessary JavaScript code to create the tree.
[ April 22, 2007: Message edited by: Merrill Higginson ]