postgresql7.1 select dotlrn_privacy__set_user_non_guest(:user_id) select dotlrn_privacy__set_user_guest(:user_id) select dotlrn_privacy__${db_proc}(:object_id,:rel_type) select case when count(1) = 0 then 0 else 1 end from acs_permissions p, rel_segments r where p.grantee_id = r.segment_id and p.privilege = 'read_private_data' and r.group_id = acs__magic_object_id('registered_users') and r.rel_type = 'dotlrn_guest_rel' and p.object_id = :object_id