[MERGE] key-length GraphIndex adapter

[Robert Collins]

On Mon, 2007-07-30 at 14:14 +1000, Robert Collins wrote:
> On Mon, 2007-07-30 at 14:01 +1000, Robert Collins wrote:
> > On Mon, 2007-07-30 at 09:44 +1000, Robert Collins wrote:
> > > This adds 'GraphIndexPrefixAdapter' to the bzrlib.index api. This
> > > adapter allows a 2-key-element index to be accessed as a single-key
> > > element index, for mapping multiple KnitGraphIndices onto a single
> > > GraphIndex.
> > 
> > Updated with write support. Doh!.
> 
> Actually, this is what I was planning. Doh! Doh! Doh!

Here is a further patch on my index branch, which returns the index that
a key was found in in each returned node. This allows mapping data from
multiple component indices back to the matching index - and thus to the
corresponding pack file, without putting the pack file name in the data
for each key and thus bloating index size.

-Rob
-- 
GPG key available at: <http://www.robertcollins.net/keys.txt>.
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