* CloneDatabase - already droping tables in internal function, removed duplicate action
* DatabaseOracle - stopped ignoring "temporary" parameter
* added two parameters to phpunit (use-normal-tables & reuse-db), default actions stay the same
* with reuse-db oracle phpunit test run on oracle down to 1m 20s ;)
* Merged the 4 simulated implementations of Database*::replace(). I took diffs, they were nearly identical. I made one based on the IBM DB2 version, since it used insert() which looked like a nice touch.
* Provided the non-simulated implementation of Database*::replace() via a protected member function, and made DatabaseMysql::replace() and DatabaseSqlite::replace() into a wrapper for it.
* Moved the MySQL-specific functionality from masterPosWait(), getSlavePos() and getMasterPos() from DatabaseBase to DatabaseMysql.
* Renamed getStatus() to getMysqlStatus() and moved it to DatabaseMysql. Removed "unimplemented" errors from two other subclasses. Really there's no way another DBMS could or should implement this function.
* Split the LoadMonitor class into a no-op class and a MySQL-specific class, to avoid fatal errors due to the getMysqlStatus() call if other DBMSs tried to use LoadBalancer with multiple servers. Of course there are lots of other reasons it won't work, I'm just fixing the architecture issue here.
And while I have a replicated test setup handy:
* On MySQL 4.1.9 and later, use SHOW SLAVE STATUS to get the lag instead of SHOW PROCESSLIST. This has the advantage of reading zero when there are no events for a while.
* Reverted the public -> protected changes from r90429, except for doQuery() after a review of usage:
** resultObject() is used by lots of things in core and extensions.
** makeSelectOptions() is used by SMW, and if that's going to be public, the other two probably should be too, for consistency.
** doQuery() was used by several things, but mostly by mistake. It's been marked private since r21359 which is before almost all of them. I updated the callers to use query().
* Added "protected" to doQuery() declarations in other database classes.
* fixed sequence handling when using DB prefix
* deferring constraints on transaction, switching back to immediate on commit/rollback
* hardcoded NLS_NUMERIC_CHARACTERS as it breaks using floats in sql if connection is in a non-US-like NLS_LANG (all vars are bound as chars)
* fixed tableExists to handle possible username-dbname difference
* added indexExists for updater
* fixed a bug in DatabaseUpdater
* tried not to produce bugs (may have failed)
* quoting objects in Oracle is poorly supported prior to 10g (it still has bugs in 10g) so i wish to avoid it for as long as possible
* i've added /*Q*/ marker to avoid double-prefixing of table names
* tableName quoted parameter is usable only in cases where you call it directly in functions where it might occur that tableName can get called twice it is unusable as the tableName gets prefixed twice
Oracle documentation is generally crappy. They claim a lot of things but some of those claims depend on a gazillion of factors and in case of one of this factors being a bit off have no general solution. Object name quoting is one of such things and is general practice amongst oracle DBAs that if you write the code directly you can use them but if you write abstracted or embedded code it's best to stay away if you can.
It is now duplicateTableStructure() duty to addIdentifierQuotes() them.
Fixed bug for mysql < 4.1 where the new name would be quoted twice.
Always quote identifier in Oracle, doing otherwise seems a bug (can someone confirm?)
This fixes bug in DatabaseOracle.php tableName() on line 671 and allows it to call
the parent implementation instead of copying it with different quotes.
Adapt Mssql addIdentifierQuotes(). Replace its addIdentifierQuotes calls with addQuotes
as it's what it really is. The serialize() is probably unneeded, since I don't think it will
ever be called with objects but I kept it anyway.
** Moved the responsibility for calling setupSchemaVars() on install to the DatabaseInstaller subclass. This allows it to be called after setupDatabase() has completed, as required by Oracle and PostgreSQL.
** Fixed OracleInstaller::getConnection() so that it respects $this->useSysDBA correctly.
** In OracleInstaller, added some more variables to the list of schema vars, which are needed by user.sql and tables.sql
** In SearchOracle, specify the database name when calling ctx_ddl.sync_index(). This fixes a fatal error in the createMainpage step, caused by the schema name not being equal to the current user.
* In oracle/tables.sql, fixed a couple of indexes with missing table prefixes.
* Improved debugging output in DatabaseInstaller::getConnection() and Installer::createMainpage().
* In DatabaseBase::selectDB(), set $this->mDBname correctly, as in DatabaseMysql.
* Fixed a bug causing the engine and charset settings to not be properly preserved when adding new tables on upgrade.
* Fixed total breakage of SQLite upgrade, by reusing the administrative connection to the SQLite database instead of creating a new one when wfGetDB() is called. Added LBFactory_Single to support this.
* Introduced a "schema variable" concept to DatabaseBase to avoid the use of globals for communication between the installer and the Database. Removed a lot of old global variable names from Database::replaceVars(), most were only added on a whim and were never used.
* Introduced DatabaseInstaller::getSchemaVars(), to allow schema variables to be supplied by the DatabaseInstaller child classes.
* Removed messages config-mysql-egine-mismatch [sic] and config-mysql-charset-mismatch. In the old installer it was possible for users to request a certain character set for an upgrade, but in the new installer the question is never asked. So these warnings were shown whenever a non-default character set or engine was used in the old database.
* In MysqlInstaller::preUpgrade(), fixed the incorrect strings used to identify the MySQL character sets: mysql5 instead of utf8 and mysql5-binary instead of binary.
* On install, initialise the site_stats table, using code copied from the old installer. Unlike the old installer, use SiteStats to increment the user count when the initial user is added.
* Fixed several instances of inappropriate call-by-reference.
* Replaced call_user_func_array() with call_user_func() where possible, it is shorter and simpler.
* Moved the caching boilerplate for DatabaseInstaller::getConnection() to the base class, and have the derived classes override an uncached function openConnection() instead. Updates r80892.
* In MysqlInstaller::getLocalSettings(), escape PHP strings correctly with LocalSettingsGenerator::escapePhpString().
* Reduce timeout for checks in dirIsExecutable() to 3 seconds, so that it doesn't take 30s to run when apache is in single-threaded mode for debugging.
* MySQL and SQLite have been tested and they appear to work. PostgreSQL upgrade is totally broken, apparently it was like that before I started. The Oracle code is untested.
* Drop unused and likely broken /*$var*/` -> `$var syntax
* Replace {$var} with '{$var}' and `{$var}` handling that uses relevant database independent quoting ({$var} without surrouding quotes are never used)
* Give the generic/mysql class a proper quote_ident implementation
* Fix the unused Oracle and Sqlite quote_ident implementations which are potential sql injections if used
* Split common variable replacemnt code off to a replaceGlobalVars and make the generic and oracle code use it instead of duplicating the same code as each other
* Made them all implement one common interface (might add more functions to it later)
* Moved MySQLField to DatabaseMysql.php
* Renamed nullable() to isNullable()
* Removed maxLength() from:
** SQLiteField: makes no sense
** MySQLField: doesn't do what people may think, useless for this class' purpose of assisting querying the DB schema
* Fixed fieldInfo() on Postgres not using tableName() and thus failing for table user, for example.
* Made fieldInfo() on MySQL return false instead of throwing a query error if table does not exist. This is consistent with other databases' behaviour.
See report on http://permalink.gmane.org/gmane.org.wikimedia.mediawiki/33902
Fixed several tag nesting problems from setup_database().
Make sourceFile() always use text errors in the installer. It can't handle
exceptions properly (introduced in r36211). But they are appropiate for update.php
thus the ugly branches.
The installer now always handles sourceFile() errors.
* made insertOneRow and getSequenceData private
* renamed fieldInfo to fieldInfoMulti and made it private (for internal use on Oracle only)
* wrapped fieldInfoMulti in fieldInfo with error if $table parameter is an array
* reverted tableName function to only support a non-array parameter
* wrapped all tableName calls with array parameter with array_map with callback
* wrapped fieldInfo into textFieldSize function to avoid reimplementation of functionality
* fixed unnessesary multiple calls to tableName with same parameter inside a single procedure
* fieldExists reduced to bool-cast output of fieldInfo
* added negative cache (handled acordingly on fieldInfo usage)
* uppercased parameters on entry. DB data is uppercased by default
Before this change, there were (? being regex 0 or 1)
"" ===? 1
'' ===? 24
"" !==? 8
'' !==? 32
== "" 14
== '' 344
!= "" 9
!== "" 4
!= '' 151
!== '' 85
Rhs was the much more common, and the preferred style by many developers.. (Was a similar discussion in #mediawiki recently.. After that lolbugreport i think)
Where there is a string (non empty) on the lhs, and variable/method call on the rhs still need normalising
Please follow <http://www.mediawiki.org/wiki/Manual:Coding_conventions>
so that code is easier to read. (For anyone whose blames are getting
messed up by whitespace changes, use svn blame -x -w, or git blame -w,
to ignore them.)
Updated all nextSequenceValue calls with new sequence names.
OverlordQ stated he'll handle changes to Postgres scripts.
Need someone to change DB2 scripts.
Also make it abstract in DatabaseBase so all subclasses have to implement some human readable name
(also make getSoftwareLink abstract for the same reason) Every current Database class already implements both.
Notably, this will switch conditional() in MySQL from using IF() to
using CASE, like all other DBMSes. Documentation suggests this works
back to 4.0. If it's a problem, it's a matter of a few lines to
override it in DatabaseMysql.php.
Also, some extra explanatory comments have been added to a number of
methods in DatabaseBase.
Specifically freeResult(), selectDB(), close(), and ping(), as suggested
by Tim on code review for r51918. Where these were overridden by stubs
in subclasses, I deleted the stubs.
All other databases were changed to extend DatabaseBase instead of
Database. Database was kept as an alias for DatabaseMysql for
compatibility. Existing explicit references to Database that I could
find were changed to DatabaseMysql for the sake of clarity.
Should cause no functional changes.
Rewriten tables.sql, added user.sql (creating db user with privileges)
Fixed epoch in Special Ancientpages and Unusedimages
Timestamp default format altered in db abstraction and changed wfTimestamp function
SearchOracle changed to return empty resultset on empty term search (query error in oracle)
TODO: Maintenance scripts update
* renamed \2types and \3types both to \types (with different number of param), Doxygen doesn't seem to like numbers in aliases
* Added aliases for @private, @protected and @public
or Database::newFromParams() explicitly at the moment. While that's already bad (breaking PG support etc), I'd rather see those get fixed before we go introducing differences between Database and DatabaseMySql.
* Wrote a tool to check the integrity of the autoloader class list, fixed some issues that came up.
* Start the autoloader before LocalSettings.php, so that when an extension writer thinks an inefficient one-file special page extension is the way to go, they don't have to use explicit includes to make the class inheritance work. Should continue to work with $IP set in LocalSettings.php as long as $IP is set before extensions are included.
