JDev 10.1.2 / ADF UIX: Approach to render data in levels/groups

Question

Hi guys, I'm looking for ideas on how to use ADF (UIX and BO) to render (and let the user work with) a structure of 3 tables which have a parent->child->child-of-the-child relationship.
The need is to show a table with the parent in one row and below of it all its children and below of each children its own children. Also, the lowest level rows have numeric data which have to be summarized by the parent and so on upwards; and the lowest level rows should be selectable for edition in another page, and after edition return to the table.
Is the recommended approach to use the hGrid to do this?
Or should I use plain JSP and customized tags to achieve this (for easiness)?
Are there any other options?

Answer 1

Solved it!! :-)
In the UIX page I check for the proxy in the event result, if it is there I take it, otherwise I take it from bindingcontext. Is this the right way to do it? Here is the UIX code:
                        <hGrid id="pptoHGrid" alternateText="No items were found"
                               treeData="${bindings.bindingContext['tree']}">
                          <boundAttribute name="proxy">
                            <if>
                              <comparison type="equals">
                                <null/>
                                <dataObject default="${uix.eventResult.hGridProxy}"/>
                              </comparison>
                              <dataObject default="${bindings.bindingContext['hGridProxy']}"/>
                              <dataObject default="${uix.eventResult.hGridProxy}"/>
                            </if>
                          </boundAttribute>Greets,
Fernando