DataSources for extracting Hierarchies (BW 3.1)

Hi,

in SAP R/3 HR we have defined a hierarchy on a custom specific object in HRP1001 (like that on orgunits).

We want to extract this hierarchy to our BW system.

Is there any possibility to define a generic datasource

for hierarchies?

Thanks for your help.

Best regards.

Lothar Lillich