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RE: Keeping last-modified dates

From: Thompson, Graeme (AELE) <Graeme.Thompson_at_smiths-aerospace.com>
Date: 2006-08-30 15:31:15 CEST

> -----Original Message-----
> From: Duncan Murdoch [mailto:murdoch@stats.uwo.ca]
> Sent: 30 August 2006 13:49
> To: Thompson, Graeme (AELE)
> Cc: Andrew Webb; Steve Fairhead; users@subversion.tigris.org
> Subject: Re: Keeping last-modified dates
> On 8/30/2006 4:41 AM, Thompson, Graeme (AELE) wrote:
> > There was a design discussion a little while ago, This
> would probably be
> > a good starting place to improve on if required.
> >
> > http://svn.haxx.se/users/archive-2005-11/1101.shtml
> I haven't read all the messages in that thread, they're
> broken up into
> several different places. But one problem with the recommendation is
> that it lacks a discussion of behaviour on updates. It gives these 4
> options for export and checkout:
> > Export and checkout:
> >
> > Configuration:
> > - 4 options available to the client for the setting of the
> > modification datetime:
> > 1) Use the current datetime
> > 2) Use the checkin datetime
> > 3) Use the original file datetime. If this was not
> stored in the
> > repository then the current time should be used (this can
> then be used
> > by the user to know that there was no modification datetime
> available)
> > 4) Use the original datetime for all files that have
> the per file
> > storage flag set. To allow for the people who want the docs
> with their
> > original modification datetime but the source with the
> current datetime.
> > (This differs from 3 in that if the global store datetime flag is on
> > then this will give the client the ability to get the
> behaviour as if
> > the global store datetime flag was off when a file was
> checked in. i.e.
> > for developers that want to use the current datetime for
> source files
> > that are stored on a server that is storing the modified
> datetime for
> > all files.)
> Updates are trickier, because the file in the working copy
> will have its
> own modification date. If the file has been modified since the last
> checkout, but a binary compare says there are no net changes: should
> the date be changed back to the old one? If it has no local
> changes but
> is being updated, which date should be used?

Then the modified date-time has been localy changed without any content
changes thus the data-time should be reset to the archive date time.

> If changes have
> been made
> so the update will do a merge, which date should be used?

In this case you are in fact changing the content of the file to one
that does not exist anywhere else, thus the modified date-time should be
set to the current time.

I will update the design with this issue and any other that people can
think of.


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Received on Wed Aug 30 16:02:54 2006

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