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Re: Support of missing/invalid dates

From: Blair Zajac <blair_at_orcaware.com>
Date: 2007-02-28 00:08:17 CET

Daniel Rall wrote:
> On Mon, 26 Feb 2007, C. Michael Pilato wrote:
>> Daniel Rall wrote:
>>> On Mon, 26 Feb 2007, C. Michael Pilato wrote:
>>>> It appears that today if you 'svnadmin load' a dumpfile that contains
>>>> revision with no svn:date property, the resulting repository will, for those
>>>> revisions, have that property (set to the time of the commit of the loaded
>>>> revision).
>>>> I can't decide if this is a feature or a bug, but I lean toward the latter.
>>> IMO, this is definitely a bug, since it will result in a repository
>>> with revision dates and numbers out of sequence, which impacts the
>>> behavior of some operations which take a date or date range argument
>>> (e.g. 'svn log -r {START_DATE}:{END_DATE}').
>>> Subversion expects "svn:date" to be set -- it doesn't consider an
>>> empty date to be valid data.
>> Unfortunately, that's entirely untrue. You simply can't make use of
>> date-based lookups if the dates aren't present.
> Uhh Mike, you just filed a bug yourself (#2721) about 'log -r {DATE}'
> on an invalid date returning an error. "Entirely untrue" is
> inaccurrate and a bit harsh, don't'cha think?
> If we want Subversion to fully support invalid/missing dates -- which
> I don't -- it's going to require some work.
>> And even if they *are*
>> present, that's not to say they are in a meaningful order. For example, if
>> you use cvs2svn to load projects one-at-a-time into a Subversion repository,
>> the dates will be completely screwy and overlapping.
> ...
> Yup, this is what happened to the ASF's repository. It's *very* annoying.

The algorithm that searches for revision from a date, does it always use
all the dates in the repository, or just the dates associated with the
revisions that modified the subtree you are looking in?

So if you're working in a subdirectory of the repository, where the
dates are monotonically increasing, the algorithm will work?


Blair Zajac, Ph.D.
Subversion training, consulting and support
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Received on Wed Feb 28 00:08:57 2007

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