How can I show tree's nodes in a Popup List of values

I have a tree and in a different form for an item I want to write nodes together for example
computer/desktop/asus/....
computer/pda/hp/... this must be shown in a popup list of values can you help?
thanks

Simon's suggestion sounds good - Connect By Prior sounds like what you want. Assuming you have a parent/child relationship in your data, you could use SQL like the following for the source of your Popup LOV (this will deal with a hierarchy of any number of levels):
SELECT SYS_CONNECT_BY_PATH(person_name, '/') d, person_id r
FROM persons
START with parent_id = 0
connect by prior id = parent_id
You will need to adapt the above to fit in with the structure of your table. The above assumes a PERSONS table with 3 columns: person_id | person_name | parent_id. It will output something like:
John
John/Adam
John/Adam/Julie
John/Adam/Steven
John/Adam/Steven/Wally
John/Bob
John/Karen
Hope that helps,
Andy

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