Re: purpose for xmlfs improvment -GSoC application -

[Charly Caulet]

Hi,


Le vendredi 25 avril 2008 à 19:23 +0200, olafBuddenhagen@gmx.net a
écrit :
> Hi,
> 
> On Thu, Apr 24, 2008 at 07:46:12PM +0200, Carl Fredrik Hammar wrote:
> > <olafBuddenhagen@gmx.net> writes:
> > > On Tue, Apr 22, 2008 at 02:34:26PM +0200, Carl Fredrik Hammar wrote:
> 
> > >> One way of tackling this would be to have a specifiable spacing
> > >> between the numbers, e.g.  `10 author', `20 title', `30 isbn'.  The
> > >> space will run out, but a command for re-spacing the existing nodes
> > >> would be fix this.
> > >
> > > I don't like the fixed spacing bit, but the idea is interesting, and
> > > made me think of something sligtly different: How about fractions?
> > > 2.1, 2.2, 2.1.1...

I like that idea.

> > 
> > Wow, that even gets properly sorted by ls.
> 
> Only as long as you stick with single digits... 2.13 will mess it up :-)

So we shall stick to single digits : use 2.9.1 instead of 2.10, 2.9.2
instead of 2.11 ...
It will be well sorted by ls.

> > > These would be robust as long as the translator stays active. It
> > > would still change when restarting the translator though, which is
> > > problematic IMHO.
> > 
> > I don't see how the filenames can be persistent, without storing them
> > in a auxiliary file or worse, in a comment.  I think we have to accept
> > that they will change.  The question is when, before by renaming to
> > make room for an insertion, between restarts, or both.
> 
> Well, manual renaming is out of the question IMHO.
> 
> But you are right of course: We can't achieve full persistence here.
> Either we can make the filenames persist for the duration of the session
> -- e.g. using the subnubers approach -- but loosing them when the
> translator exits. Or ranaming happens automatically immediately after
> any insert/delete. The question is which is the lesser evil...
> 
> The latter option can be inconvenient in certain situations, and
> somewhat confusing to both humans and certain kind of programs... On the
> other hand, it has the advantage that we always get a 1:1 representation
> of the underlying XML file, without any temporary state that gets lost
> on exit. This is an extremely important property IMHO.

What do you mean "a 1:1 representation" ?


-- 
Charly CAULET <CerbeRGD>

membre de www.208assistance.org
ID jabber : charly.caulet@jabber.fr
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