Sorry, I thought I had it some where, but you may want to have a look at
http://www.holocentric.com/default.asp?menuid=75
I'd say it's not really good since it relies on a text export (pex or wex) but it's not different from the Rational one.
Depending on what you really need you'd be better off accessing repositories & workspaces using the qqcf_RepositoryClient class in the plan Configuration.