Recreating the BAPI Explorer in Java

Hi

I'm using JCo to try to recreate something like the BAPI Explorer in a java program.

I can do something like the alphabetical view by using SWO_QUERY_API_OBJTYPES to get all objects, and then calling SWO_QUERY_API_METHODS to get the BAPIs on those objects.

Has anyone any idea what methods I would use to create the hierarchical view?

TIA

Ian