James Westby wrote: > On Wed Dec 02 06:53:49 -0500 2009 Jonathan Lange wrote: >> 3. Branches have the owner in the URL, not doing that here would seem >> to be inconsistent. > > This for me is the convinving argument. > [..] > > Therefore I think consistency should win out. As Jono said, if they > are different then to the user it can look like another weird > LP inconsistency. +1
> Also, taking the less-trodden path is tempting because we avoid a pile
> of known issues, but it does open us up to several new ones, and we
> will know less how to tackle them.
>
> For instance we want inheritence in recipes. Therefore one needs
> to reference another. In text form this may be by URI. Bazaar
> has stacked branches that reference each other by relative URI,
> which has some interesting characteristics, for instance look
> at the dance that is required to upgrade branches on LP to 2a.
> How will we store the inheritence in the DB, how will it be
> presented?
Inheritance relationships are typically captured by directed and acyclic
graphs and the following paper:
"Maintaining transitive closure of graphs in SQL",
http://www.comp.nus.edu.sg/~wongls/psZ/dlsw-ijit97-16.ps
presents a technique for storing DAGs in the database that was used to
implement package sets.
[..]
Best regards
--
Muharem Hrnjadovic <[email protected]>
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