[MERGE] Unique roots for bzr

[Robert Collins]

On Sat, 2006-10-14 at 07:52 +1000, John Arbash Meinel wrote:
> 
> > Unfortunately, MemoryTree doesn't have a persistent inventory-- it's
> > zapped on unlock.  So every time we locked, we'd get a different
> root
> > id.  I don't understand why it's written this way.
> 
> Well, isn't that a problem with the inventory? Yes we get a new
> inventory each time, but IIRC it reads it from the branch. I think it
> was an attempt to move in the direction we want for WorkingTree's,
> where
> we don't load the inventory if we don't have to, and operations flush
> it
> to disk when unlocked, rather than each operation reading it,
> modifying
> it, and writing it out.

Yes, its precisely that: WorkingTree will be refreshing its memory cache
too on lock in the future. I dont see how MemoryTree always having the
Repositories most recent tree as its initial content is a problem. (But
I'm willing to learn).

Rob

-- 
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