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Currently (15 Aug 2003) TWiki handles its preferences in a way that is hardly optimal: preferences are stored as two arrays (one is for keys and the other is for values), and preference look-up is done by means of key array iteration.

Moreover, for preferences of all webs other then the current one, there is the only "alternative" storage; so, say, when Sandbox is the default web, and some preference value for TWiki web is queried, this web's preferences are cached in the "alternative" storage, but if a preference value for Main web is queried then, the cached preferences for TWiki are discarded. (This maybe doesn't have a noticeable performance impact, but it looks rather ugly. smile )

I rewrote those parts of PrefsDotPm that related to preferences storing and retrieving, so that preferences were stored in a way that permitted look-up via hashes. (There is a comment in PrefsDotPm that urges not to use hashes because of significance of preferences order; my implementation takes order into account where it matters.) The patch will be posted shortly.

-- PavelGoran - 15 Aug 2003

Here is the patch for StoreDotPm, generated against TWikiBetaRelease from 11 Aug 2003. (Aside from changing preferences handling, I removed unnecessary 'o' option for regular expressions, see ModPerlOnceRegex.)

-- PavelGoran - 19 Aug 2003

I like this patch, but it doesn't go far enough for me. I'm going to use these ideas and do some refactoring, and commit the result.

-- WalterMundt - 11 Feb 2004

Done! I've committed changes incorporating the ideas in this patch to CVS.

-- WalterMundt - 12 Feb 2004

Walter, please set the "ScheduledFor" and the "*Progress" fields also for internal refactoring work. That way we get a quick view on what has been done and what needs attention before a release (like docs, which does not apply in this particular case)

-- PeterThoeny - 12 Feb 2004

No problem, I'll do that in the future.

-- WalterMundt - 12 Feb 2004

Category: TWikiPatches

Topic attachments
I Attachment History Action Size Date Who Comment
Unknown file formatdiff Prefs.pm.diff r1 manage 11.1 K 2003-08-19 - 05:37 PavelGoran Patch for StoreDotPm
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Topic revision: r7 - 2004-08-20 - CrawfordCurrie
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