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Re: Ev2 as a move-aware editor

From: Greg Stein <gstein_at_gmail.com>
Date: Tue, 25 Jun 2013 17:48:02 -0400

On Tue, Jun 25, 2013 at 4:17 PM, Philip Martin
<philip.martin_at_wandisco.com> wrote:
> Branko ─îibej <brane_at_wandisco.com> writes:
>> On 25.06.2013 13:42, Philip Martin wrote:
>>> What about rotates that overlap. Consider a repository:
>>> svnadmin create repo
>>> svn mkdir -mm --parents file://`pwd`/repo/A/B/C ^/X/Y/Z
>>> Rotate /A and /X/Y/Z and /X and /A/B/C:
>>> svn mv wc/A wc/A2
>>> svn mv wc/X wc/X2
>>> svn mv wc/A2/B/C wc/X
>>> svn mv wc/X2/Y/Z wc/A
>>> svn mv wc/A2/B wc/A/B
>>> svn mv wc/X2/Y wc/X/Y
>>> svn mv wc/A2 wc/X/Y/Z
>>> svn mv wc/X2 wc/A/B/C
>> What you're describing is not a simple rotation, since you're
>> restructuring the tree quite a bit more than that. In any case there
>> should certainly be no copy operations in the editor drive.
> Perhaps the copy and delete should be combined into moves. So instead
> of:

You're affecting six nodes, so I think you should be able to pack this
down into touching 6 nodes once each. I believe this will work:

move(A/B, X/Y/Z/B)
rotate(A, X/Y/Z)
move(X/Y, A/B/C/Y)
rotate(X, A/B/C)

Insert appropriate alter() calls. Each operation can be performed as
it arrives, as the later calls depend upon those moves/rotates.

Received on 2013-06-25 23:48:33 CEST

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