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Re: Why we have NULL txn_id for delta representation?

From: Max Bowsher <maxb1_at_ukf.net>
Date: 2006-03-09 13:03:11 CET

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Kamesh Jayachandran wrote:
> Hi,
> I could see all 'delta' representations having TXN as 0. I could see the
> code of subversion/libsvn_fs_base/reps-strings.c@18787:line 1544 causing
> this behaviour.
>
> Can someone clarify.
>
> P.S I could see the mention of Representation's TXN acting as a kind of
> mutablity flag.

Yes, that is correct.

delta reps have no txn_id because they are never considered mutable.

> I think we clone only the 'nodes' entries for the path
> getting changed not the representations, as we put the youngest as
> 'fulltext' so why we need to clone the corresponding representations
> rather we can create new representations.

I totally don't understand that sentence.

Max.
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Received on Thu Mar 9 13:04:22 2006

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