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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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translation functions. Also add ability to completely supress email notifications for actitivies with private contents. We'll still pass private mail notifications because often the email notification is the only way infrequently used channels get alerted to these.
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including those in code blocks.
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when the message body has been suppressed
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This should fix the issue with encrypted content in the notification messages (for locally posted replies). The fix was a bit harder than anticipated because we store the parent id as an int in the notify table so this had to be modified to char storage as well.
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lists, "mail" is for reading and writing conversations. This is so we can Comanchify it cleanly.
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contained the obscured message. Clear it.
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essentially simultaneous deliveries.
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lot of channels and it isn't always obvious which channel is getting the notification. If this works out we should probably add this to the rest of them.
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emails across your channels
also try to handle the wretched mess of broken and duplicated hublocs that fred.cepheus.uberspace.de typically reports
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need a separate preference for whether you want notifications for likes.
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do something about it.
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it's a lot easier to parse than xml - but OMG do they get mangled - stored as single quoted strings when escaped as if double quoted. We need to use my new function json_decode_plus() wherever we need to parse one of these babies to make sure we get it right. Maybe we should've just used serialize().
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17th-June with a broken policy (which won't have a comment box) but it seems to be working for both recent and older posts.
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potentially sensitive message info. Note: there is still information leakage of sender but this is difficult to avoid completely. "You've got an email from (we're sorry, we can't tell you...)"
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perfect - there may be duplicated content and possibly unauthorised content and 'timeago' not working correctly - will deal with those later, but at least you can see results.
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means we can zidify them)
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plugging away at them
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