[Nepomuk] Re: same nepomuk db for several users

[Bruce Adams]

----- Original Message ----
> From: Evgeny Egorochkin <phreedom.stdin at gmail.com>
> To: nepomuk at kde.org
> Cc: Bruce Adams <tortoise_74 at yahoo.co.uk>; Sebastian  Trüg <trueg at kde.org>
> Sent: Fri, December 3, 2010 12:19:20 AM
> Subject: Re: [Nepomuk] Re: same nepomuk db for several users
> 
> On Thursday 02 December 2010 12:39:59 Bruce Adams wrote:
> >  Hi,
> >     Sorry for jumping in.
> > Perhaps I missed the  point of a semantic desktop. Surely its critical and
> > basic to be able to  share
> > information between users. Imagine if we used different file names  for the
> > files? It would be chaos.
> > 
> > I am concerned that  not considering a shared user model up front might mean
> > a fundamental  redesign
> > would be required to support it. Can you offer any  re-assurance?
> 
> Current APIs won't stop working if some other source of  metadata appears, like 
>
> another user. As to the implementation, it's been  considered but there's only 

> so much time devs have and this isn't the only  area which needs work.
> 
One effect would on the ontology side. If two users both have the
same set of relations describing say the rating for a file you need to add extra 
relations
to indicate the user.
The more serious issue is security. With a single user model there is no need 
for
any kind of security. Adding security or making a system multi-user as an after 
thought
is non trivial if thought hasn't been given up front.

Regards,

Bruce.