Peoplesoft Trees as Hierarchial Columns in OBIEE 11g

Sorry for a duplicate posting. Logged in as a normal user with random number. I know how much people hate it. Logged in as myself now.
Hi,
I have extensively searched using Google or 11g docs but could not find a proper solution to using Peoplesoft trees in form of hierarchial columns in obiee 11g. Can the rpd of obiee 11g be designed to view the Peoplesoft tree structure( as it is in Tree manager in Pplsoft) as hierachial columns in obiee 11g? I am sure hierarchial columns as a 11g feature are not just for visual representation in tree format but also can be viewed in Answers and queried against it,am I right?
Anybody who has worked on trees and OBIEE 11g hierarchial columns? Ahsan/Navin??
Thanks,
Dan

I have not used the 11g hierarchical columns for PSoft Trees but I can think of a glaring reason NOT to do this..PERFORMANCE. If I understand correctly, 11g issues a group by and Union as you traverse this type of structure and PeopleSoft trees have a number of tables to represent the actual TREE. I cannot possibly see how this can be effective especially with a large scale BI Apps DW? This is part of the reason the trees get flattened out via the OOTB ETL adaptors for PSoft.

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Peoplesoft Trees as Hierarchial Columns in OBIEE 11g

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