[Nepomuk] [RFC] Nepomuk Resource naming convention

[Christian Mollekopf]

On Tuesday 19 February 2013 22.18:43 Vishesh Handa wrote:
> Hey everyone
> 
> On Wed, Feb 13, 2013 at 8:30 PM, Matthew Dawson 
<matthew at mjdsystems.ca>wrote:
> > .Especially since you remarked a duplicate is not a big deal, yes you
> > should be
> > fine.  For quick reference of the probabilities, Wikipedia offers:
> > 
> > http://en.wikipedia.org/wiki/Universally_unique_identifier#Random_UUID_pro
> > bability_of_duplicates
> Considering the probability of hitting a duplicate is so low. I'm going to
> be removing the check in master.
> 
> Unless someone objects?
> 
> Very simple benchmarks reveal that the time spent creating a resource drops
> from 8 msecs to 4-5sec, when one removes the check. And this is with an
> empty database. On a production system, with a large database, the
> difference would be a lot greater.

If a proper implementation such as QUUID or boost's uuid is used, this is 
completely safe (you will never ever hit a duplicate on a single system, and 
it should even be good enough if you connected all the nepomuk db's of all 
users together ;-).
So, go for it =)

Cheers,
Christian