How to map a domain, product and category hierarchy to RTC?

We have an product/project organization like Product
Domain, Product (Each
product in one Domain) and Product
SubCategory (only valid for one product).
In ClearQuest I would create dependent choice lists where Product
choice list depends on the selected Product Domain and the
SubCategory choice list depends on the selected Product.

How would I realize similar stuff in RTC?

One idea is to have the 'Product' as the 'RTC Project area', and
forget about the 'Product Domain'. The field 'Found In' would hold
the affected 'Product Version' and the field 'Filed Against' matches
the 'Product SubCategory'.
The disadvantages are that you have to maintain the process for all
projects (even though they are all the same) and you do not have the
possibility to query multiple projects.

On the other hand you could map the 'Product Domain' to 'RTC project
area'.
And then what?
Map the 'Product', 'Product Version' and 'SubCategory' to the fields
'Filed against' and 'Found in'. But how? If I map 'Product' and
'Product SubCategory' to 'Filed Against' (RTC Categories and
subcategories) we will get a very long choice list with a three digit
number of values.
Furthermore the submitter can select a 'Product Version' in the field
'Found In' which does not match the selected Product.
Is there an easy way to make those lists dependent to decrease the
number of values and to avoid a mismatched Version selection.

Or do you suggest other mappings?

May thanks and kind regards
Hajo and Arne

In RTC-2.0, you can achieve this with some coding. See enhancement
73683, comment 7.

Do you have example code for this?

Geoff,
the work item comment #7 just mentions the extension points for
Eclipse UI and Web UI. Do you have a pointer for actual examples or
how-to-for-dummies with a description what such an extension would
need to entail and how it would be deployed?
For the Eclipse UI, would it be an Eclipse plugin written in Java?

cheers,
Arne

Hi Geoff,

     I am working on a similar requirement, wherein I have several parent filters in the hierarchy structure followed by Iterations & various Work item types.....I am not able to map my requirement just with 'Project Area -> Release Plan -> Iterations -> Story -> Work items)...Do we have these capabilities in the latest version of RTC (5.0 onwards)?

Cheers

Guru.