insert into acl_user
    select 'file', document_id, author_id, -1
      from document_author
     where version_num = (
           select max(version_num)
             from document_revision
            where document_revision.document_id = document_author.document_id
     ) and not exists (
           select *
             from acl_user
            where acl_id = 'file'
              and object_id = document_id
              and user_id = author_id
     ) and document_id in (select id from getDocumentTree(179)) ;

Ovaj zadnji uvjet ograničava dio stabla