Hi Guido,
we just use the groups defined in the user-database (like OS or LDAP) for doing the mapping to the roles in the web.xml file. The groups are not mapped to the userpath of the webdav server. But the order of the ACL/ACE definitions of a resource is relevant, which means that if you like to allow one user (e.g. A) access to a resource and deny the access to the rest of the users, define first an ACE granting access for user A and then an ACE deny access to all users. In this case the desired behavior should be available. If you first deny all and in the second ACE grant access for A, A will have no access.
Hope this description helps you.
regards Eckehard
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