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bug that session['loadtime'] was created to fix. It's questionable whether we still need to even look for item_unseen but I won't make that call today. We can also eliminate the restriction on not doing live updates from the discover tab since we aren't relying completely on item_unseen (which can only be set by the owner and won't work on a page with virtual owners).
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further investigation
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some slightly older changes in display item query), and allow '@' in linkified urls.
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searches. This does not incorporate any other flag optimisations as that will require a major DB update and possibly involve significant downtime. This is just to bite off a little chunk now and provide some much needed relief.
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be re-run if necessary with a count of remaining hublocs to be fixed. Some sites are down so it probably can't ever get to zero. The check for a null join is quite an expensive query. It could block your DB for a couple minutes while it runs.
Also some preliminary work on a means to take the channel module out of list/forum mode if a specific mid is requested.
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and matrix, display and search are system pages and therefore set at 400)
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the summary page)
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There were 11 main types of changes:
- UPDATE's and DELETE's sometimes had LIMIT 1 at the end of them. This is not only non-compliant but
it would certainly not do what whoever wrote it thought it would. It is likely this mistake was just
copied from Friendica. All of these instances, the LIMIT 1 was simply removed.
- Bitwise operations (and even some non-zero int checks) erroneously rely on MySQL implicit
integer-boolean conversion in the WHERE clauses. This is non-compliant (and bad programming practice
to boot). Proper explicit boolean conversions were added. New queries should use proper conventions.
- MySQL has a different operator for bitwise XOR than postgres. Rather than add yet another dba_
func, I converted them to "& ~" ("AND NOT") when turning off, and "|" ("OR") when turning on. There
were no true toggles (XOR). New queries should refrain from using XOR when not necessary.
- There are several fields which the schema has marked as NOT NULL, but the inserts don't specify
them. The reason this works is because mysql totally ignores the constraint and adds an empty text
default automatically. Again, non-compliant, obviously. In these cases a default of empty text was
added.
- Several statements rely on a non-standard MySQL feature
(http://dev.mysql.com/doc/refman/5.5/en/group-by-handling.html). These queries can all be rewritten
to be standards compliant. Interestingly enough, the newly rewritten standards compliant queries run
a zillion times faster, even on MySQL.
- A couple of function/operator name translations were needed (RAND/RANDOM, GROUP_CONCAT/STRING_AGG,
UTC_NOW, REGEXP/~, ^/#) -- assist functions added in the dba_
- INTERVALs: postgres requires quotes around the value, mysql requires that there are not quotes
around the value -- assist functions added in the dba_
- NULL_DATE's -- Postgres does not allow the invalid date '0000-00-00 00:00:00' (there is no such
thing as year 0 or month 0 or day 0). We use '0001-01-01 00:00:00' for postgres. Conversions are
handled in Zot/item packets automagically by quoting all dates with dbescdate().
- char(##) specifications in the schema creates fields with blank spaces that aren't trimmed in the
code. MySQL apparently treats char(##) as varchar(##), again, non-compliant. Since postgres works
better with text fields anyway, this ball of bugs was simply side-stepped by using 'text' datatype
for all text fields in the postgres schema. varchar was used in a couple of places where it actually
seemed appropriate (size constraint), but without rigorously vetting that all of the PHP code
actually validates data, new bugs might come out from under the rug.
- postgres doesn't store nul bytes and a few other non-printables in text fields, even when quoted.
bytea fields were used when storing binary data (photo.data, attach.data). A new dbescbin() function
was added to handle this transparently.
- postgres does not support LIMIT #,# syntax. All databases support LIMIT # OFFSET # syntax.
Statements were updated to be standard.
These changes require corresponding changes in the coding standards. Please review those before
adding any code going forward.
Still on my TODO list:
- remove quotes from non-reserved identifiers and make reserved identifiers use dba func for quoting
- Rewrite search queries for better results (both MySQL and Postgres)
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owner vagueness (potential bugs) in profile_tabs()
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any more content to load.
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channels using channel/<channel>/?mid=...
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Add display of a thread to channel module
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would be useful for forum-like channels and/or block-oriented themes.
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giving up.
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setting like /network does.
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Search by date (archive) works a bit now
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logged in locally, $yoursite/~ will now take you to *your* channel page. If you aren't logged in, it won't.
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your top-level posts in your personal tag cloud to prevent your commenters from tag spamming you and featuring their tags on your wall. It would be bad if somebody was able to make #penis_enlargement *your* personal top tag. We can do something different for the matrix, as it can't be seen by outsiders.
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page)
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