MediaWiki  1.30.0
IDatabase.php
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1 <?php
26 namespace Wikimedia\Rdbms;
27 
28 use Wikimedia\ScopedCallback;
29 use Exception;
30 use RuntimeException;
31 use UnexpectedValueException;
32 use stdClass;
33 
40 interface IDatabase {
42  const TRIGGER_IDLE = 1;
44  const TRIGGER_COMMIT = 2;
46  const TRIGGER_ROLLBACK = 3;
47 
49  const TRANSACTION_EXPLICIT = '';
51  const TRANSACTION_INTERNAL = 'implicit';
52 
54  const FLUSHING_ALL_PEERS = 'flush';
56  const FLUSHING_INTERNAL = 'flush';
57 
59  const REMEMBER_NOTHING = '';
61  const REMEMBER_PRIOR = 'remember';
63  const RESTORE_PRIOR = 'prior';
65  const RESTORE_INITIAL = 'initial';
66 
68  const ESTIMATE_TOTAL = 'total';
70  const ESTIMATE_DB_APPLY = 'apply';
71 
73  const LIST_COMMA = 0;
75  const LIST_AND = 1;
77  const LIST_SET = 2;
79  const LIST_NAMES = 3;
81  const LIST_OR = 4;
82 
84  const DBO_DEBUG = 1;
86  const DBO_NOBUFFER = 2;
88  const DBO_IGNORE = 4;
90  const DBO_TRX = 8;
92  const DBO_DEFAULT = 16;
94  const DBO_PERSISTENT = 32;
96  const DBO_SYSDBA = 64;
98  const DBO_DDLMODE = 128;
100  const DBO_SSL = 256;
102  const DBO_COMPRESS = 512;
103 
111  public function getServerInfo();
112 
133  public function bufferResults( $buffer = null );
134 
143  public function trxLevel();
144 
154  public function trxTimestamp();
155 
160  public function explicitTrxActive();
161 
167  public function tablePrefix( $prefix = null );
168 
174  public function dbSchema( $schema = null );
175 
185  public function getLBInfo( $name = null );
186 
195  public function setLBInfo( $name, $value = null );
196 
203  public function setLazyMasterHandle( IDatabase $conn );
204 
211  public function implicitGroupby();
212 
219  public function implicitOrderby();
220 
225  public function lastQuery();
226 
233  public function doneWrites();
234 
242  public function lastDoneWrites();
243 
248  public function writesPending();
249 
257  public function writesOrCallbacksPending();
258 
268  public function pendingWriteQueryDuration( $type = self::ESTIMATE_TOTAL );
269 
276  public function pendingWriteCallers();
277 
284  public function pendingWriteRowsAffected();
285 
290  public function isOpen();
291 
304  public function setFlag( $flag, $remember = self::REMEMBER_NOTHING );
305 
318  public function clearFlag( $flag, $remember = self::REMEMBER_NOTHING );
319 
326  public function restoreFlags( $state = self::RESTORE_PRIOR );
327 
338  public function getFlag( $flag );
339 
343  public function getDomainID();
344 
351  public function getWikiID();
352 
358  public function getType();
359 
370  public function open( $server, $user, $password, $dbName );
371 
382  public function fetchObject( $res );
383 
393  public function fetchRow( $res );
394 
401  public function numRows( $res );
402 
410  public function numFields( $res );
411 
420  public function fieldName( $res, $n );
421 
431  public function insertId();
432 
440  public function dataSeek( $res, $row );
441 
448  public function lastErrno();
449 
456  public function lastError();
457 
467  public function fieldInfo( $table, $field );
468 
475  public function affectedRows();
476 
485  public function getSoftwareLink();
486 
493  public function getServerVersion();
494 
502  public function close();
503 
508  public function reportConnectionError( $error = 'Unknown error' );
509 
532  public function query( $sql, $fname = __METHOD__, $tempIgnore = false );
533 
545  public function reportQueryError( $error, $errno, $sql, $fname, $tempIgnore = false );
546 
554  public function freeResult( $res );
555 
574  public function selectField(
575  $table, $var, $cond = '', $fname = __METHOD__, $options = [], $join_conds = []
576  );
577 
597  public function selectFieldValues(
598  $table, $var, $cond = '', $fname = __METHOD__, $options = [], $join_conds = []
599  );
600 
750  public function select(
751  $table, $vars, $conds = '', $fname = __METHOD__,
752  $options = [], $join_conds = []
753  );
754 
771  public function selectSQLText(
772  $table, $vars, $conds = '', $fname = __METHOD__,
773  $options = [], $join_conds = []
774  );
775 
790  public function selectRow( $table, $vars, $conds, $fname = __METHOD__,
791  $options = [], $join_conds = []
792  );
793 
814  public function estimateRowCount(
815  $table, $vars = '*', $conds = '', $fname = __METHOD__, $options = []
816  );
817 
835  public function selectRowCount(
836  $tables, $vars = '*', $conds = '', $fname = __METHOD__, $options = [], $join_conds = []
837  );
838 
847  public function fieldExists( $table, $field, $fname = __METHOD__ );
848 
859  public function indexExists( $table, $index, $fname = __METHOD__ );
860 
868  public function tableExists( $table, $fname = __METHOD__ );
869 
878  public function indexUnique( $table, $index );
879 
913  public function insert( $table, $a, $fname = __METHOD__, $options = [] );
914 
935  public function update( $table, $values, $conds, $fname = __METHOD__, $options = [] );
936 
962  public function makeList( $a, $mode = self::LIST_COMMA );
963 
974  public function makeWhereFrom2d( $data, $baseKey, $subKey );
975 
984  public function aggregateValue( $valuedata, $valuename = 'value' );
985 
990  public function bitNot( $field );
991 
997  public function bitAnd( $fieldLeft, $fieldRight );
998 
1004  public function bitOr( $fieldLeft, $fieldRight );
1005 
1012  public function buildConcat( $stringList );
1013 
1030  public function buildGroupConcatField(
1031  $delim, $table, $field, $conds = '', $join_conds = []
1032  );
1033 
1039  public function buildStringCast( $field );
1040 
1052  public function databasesAreIndependent();
1053 
1061  public function selectDB( $db );
1062 
1067  public function getDBname();
1068 
1073  public function getServer();
1074 
1081  public function addQuotes( $s );
1082 
1099  public function buildLike();
1100 
1106  public function anyChar();
1107 
1113  public function anyString();
1114 
1131  public function nextSequenceValue( $seqName );
1132 
1155  public function replace( $table, $uniqueIndexes, $rows, $fname = __METHOD__ );
1156 
1193  public function upsert(
1194  $table, array $rows, array $uniqueIndexes, array $set, $fname = __METHOD__
1195  );
1196 
1217  public function deleteJoin( $delTable, $joinTable, $delVar, $joinVar, $conds,
1218  $fname = __METHOD__
1219  );
1220 
1231  public function delete( $table, $conds, $fname = __METHOD__ );
1232 
1261  public function insertSelect( $destTable, $srcTable, $varMap, $conds,
1262  $fname = __METHOD__,
1263  $insertOptions = [], $selectOptions = [], $selectJoinConds = []
1264  );
1265 
1271  public function unionSupportsOrderAndLimit();
1272 
1281  public function unionQueries( $sqls, $all );
1282 
1309  public function unionConditionPermutations(
1310  $table, $vars, array $permute_conds, $extra_conds = '', $fname = __METHOD__,
1311  $options = [], $join_conds = []
1312  );
1313 
1323  public function conditional( $cond, $trueVal, $falseVal );
1324 
1335  public function strreplace( $orig, $old, $new );
1336 
1342  public function getServerUptime();
1343 
1349  public function wasDeadlock();
1350 
1356  public function wasLockTimeout();
1357 
1364  public function wasErrorReissuable();
1365 
1371  public function wasReadOnlyError();
1372 
1382  public function masterPosWait( DBMasterPos $pos, $timeout );
1383 
1389  public function getReplicaPos();
1390 
1396  public function getMasterPos();
1397 
1402  public function serverIsReadOnly();
1403 
1420  public function onTransactionResolution( callable $callback, $fname = __METHOD__ );
1421 
1442  public function onTransactionIdle( callable $callback, $fname = __METHOD__ );
1443 
1459  public function onTransactionPreCommitOrIdle( callable $callback, $fname = __METHOD__ );
1460 
1476  public function setTransactionListener( $name, callable $callback = null );
1477 
1499  public function startAtomic( $fname = __METHOD__ );
1500 
1512  public function endAtomic( $fname = __METHOD__ );
1513 
1541  public function doAtomicSection( $fname, callable $callback );
1542 
1563  public function begin( $fname = __METHOD__, $mode = self::TRANSACTION_EXPLICIT );
1564 
1585  public function commit( $fname = __METHOD__, $flush = '' );
1586 
1605  public function rollback( $fname = __METHOD__, $flush = '' );
1606 
1619  public function flushSnapshot( $fname = __METHOD__ );
1620 
1629  public function listTables( $prefix = null, $fname = __METHOD__ );
1630 
1642  public function timestamp( $ts = 0 );
1643 
1657  public function timestampOrNull( $ts = null );
1658 
1665  public function ping( &$rtt = null );
1666 
1676  public function getLag();
1677 
1691  public function getSessionLagStatus();
1692 
1698  public function maxListLen();
1699 
1709  public function encodeBlob( $b );
1710 
1719  public function decodeBlob( $b );
1720 
1731  public function setSessionOptions( array $options );
1732 
1740  public function setSchemaVars( $vars );
1741 
1750  public function lockIsFree( $lockName, $method );
1751 
1762  public function lock( $lockName, $method, $timeout = 5 );
1763 
1776  public function unlock( $lockName, $method );
1777 
1799  public function getScopedLockAndFlush( $lockKey, $fname, $timeout );
1800 
1807  public function namedLocksEnqueue();
1808 
1816  public function getInfinity();
1817 
1824  public function encodeExpiry( $expiry );
1825 
1833  public function decodeExpiry( $expiry, $format = TS_MW );
1834 
1844  public function setBigSelects( $value = true );
1845 
1850  public function isReadOnly();
1851 
1865  public function setTableAliases( array $aliases );
1866 }
1867 
1868 class_alias( IDatabase::class, 'IDatabase' );
DBO_PERSISTENT
const DBO_PERSISTENT
Definition: defines.php:14
Wikimedia\Rdbms\IDatabase\flushSnapshot
flushSnapshot( $fname=__METHOD__)
Commit any transaction but error out if writes or callbacks are pending.
Wikimedia\Rdbms\IDatabase\query
query( $sql, $fname=__METHOD__, $tempIgnore=false)
Run an SQL query and return the result.
Wikimedia\Rdbms\IDatabase\doAtomicSection
doAtomicSection( $fname, callable $callback)
Run a callback to do an atomic set of updates for this database.
$user
please add to it if you re going to add events to the MediaWiki code where normally authentication against an external auth plugin would be creating a account $user
Definition: hooks.txt:244
Wikimedia\Rdbms\IDatabase\isOpen
isOpen()
Is a connection to the database open?
Wikimedia\Rdbms\IDatabase\affectedRows
affectedRows()
Get the number of rows affected by the last write query.
Wikimedia\Rdbms\IDatabase\setBigSelects
setBigSelects( $value=true)
Allow or deny "big selects" for this session only.
Wikimedia\Rdbms\IDatabase\getServer
getServer()
Get the server hostname or IP address.
Wikimedia\Rdbms\IDatabase\getServerVersion
getServerVersion()
A string describing the current software version, like from mysql_get_server_info().
Wikimedia\Rdbms\IDatabase\maxListLen
maxListLen()
Return the maximum number of items allowed in a list, or 0 for unlimited.
$tables
this hook is for auditing only RecentChangesLinked and Watchlist RecentChangesLinked and Watchlist Do not use this to implement individual filters if they are compatible with the ChangesListFilter and ChangesListFilterGroup structure use sub classes of those in conjunction with the ChangesListSpecialPageStructuredFilters hook This hook can be used to implement filters that do not implement that or custom behavior that is not an individual filter e g Watchlist & $tables
Definition: hooks.txt:988
Wikimedia\Rdbms\IDatabase\getInfinity
getInfinity()
Find out when 'infinity' is.
Wikimedia\Rdbms\IDatabase\insertSelect
insertSelect( $destTable, $srcTable, $varMap, $conds, $fname=__METHOD__, $insertOptions=[], $selectOptions=[], $selectJoinConds=[])
INSERT SELECT wrapper.
Wikimedia\Rdbms\IDatabase\unionQueries
unionQueries( $sqls, $all)
Construct a UNION query This is used for providing overload point for other DB abstractions not compa...
Wikimedia\Rdbms\IDatabase\pendingWriteQueryDuration
pendingWriteQueryDuration( $type=self::ESTIMATE_TOTAL)
Get the time spend running write queries for this transaction.
Wikimedia\Rdbms\IDatabase\tablePrefix
tablePrefix( $prefix=null)
Get/set the table prefix.
Wikimedia\Rdbms\IDatabase\writesPending
writesPending()
Wikimedia\Rdbms\IDatabase\makeList
makeList( $a, $mode=self::LIST_COMMA)
Makes an encoded list of strings from an array.
Wikimedia\Rdbms\IDatabase\numRows
numRows( $res)
Get the number of rows in a result object.
Wikimedia\Rdbms\IDatabase\ping
ping(&$rtt=null)
Ping the server and try to reconnect if it there is no connection.
Wikimedia\Rdbms\IDatabase\numFields
numFields( $res)
Get the number of fields in a result object.
Wikimedia\Rdbms\IDatabase\getWikiID
getWikiID()
Alias for getDomainID()
Wikimedia\Rdbms\IDatabase\bitNot
bitNot( $field)
Wikimedia\Rdbms\IDatabase\getMasterPos
getMasterPos()
Get the position of this master.
Wikimedia\Rdbms\IDatabase\wasErrorReissuable
wasErrorReissuable()
Determines if the last query error was due to a dropped connection and should be dealt with by pingin...
Wikimedia\Rdbms\IDatabase\encodeExpiry
encodeExpiry( $expiry)
Encode an expiry time into the DBMS dependent format.
Wikimedia\Rdbms\IDatabase\lastError
lastError()
Get a description of the last error.
DBO_DEBUG
const DBO_DEBUG
Definition: defines.php:9
Wikimedia\Rdbms\IDatabase\replace
replace( $table, $uniqueIndexes, $rows, $fname=__METHOD__)
REPLACE query wrapper.
Wikimedia\Rdbms\IDatabase\endAtomic
endAtomic( $fname=__METHOD__)
Ends an atomic section of SQL statements.
use
as see the revision history and available at free of to any person obtaining a copy of this software and associated documentation to deal in the Software without including without limitation the rights to use
Definition: MIT-LICENSE.txt:10
Wikimedia\Rdbms\IDatabase\trxLevel
trxLevel()
Gets the current transaction level.
Wikimedia\Rdbms\IDatabase\close
close()
Closes a database connection.
Wikimedia\Rdbms\IDatabase\implicitOrderby
implicitOrderby()
Returns true if this database does an implicit order by when the column has an index For example: SEL...
Wikimedia\Rdbms
Definition: ChronologyProtector.php:24
$fname
if(!defined( 'MEDIAWIKI')) $fname
This file is not a valid entry point, perform no further processing unless MEDIAWIKI is defined.
Definition: Setup.php:36
Wikimedia\Rdbms\IDatabase\getServerInfo
getServerInfo()
A string describing the current software version, and possibly other details in a user-friendly way.
Wikimedia\Rdbms\DBMasterPos
An object representing a master or replica DB position in a replicated setup.
Definition: DBMasterPos.php:10
Wikimedia\Rdbms\IDatabase\trxTimestamp
trxTimestamp()
Get the UNIX timestamp of the time that the transaction was established.
$s
$s
Definition: mergeMessageFileList.php:188
Wikimedia\Rdbms\IDatabase\doneWrites
doneWrites()
Returns true if the connection may have been used for write queries.
DBO_SSL
const DBO_SSL
Definition: defines.php:17
Wikimedia\Rdbms\IDatabase\reportConnectionError
reportConnectionError( $error='Unknown error')
$res
$res
Definition: database.txt:21
$name
Allows to change the fields on the form that will be generated $name
Definition: hooks.txt:302
DBO_IGNORE
const DBO_IGNORE
Definition: defines.php:11
Wikimedia\Rdbms\IDatabase\decodeBlob
decodeBlob( $b)
Some DBMSs return a special placeholder object representing blob fields in result objects.
Wikimedia\Rdbms\IDatabase\getSessionLagStatus
getSessionLagStatus()
Get the replica DB lag when the current transaction started or a general lag estimate if not transact...
Wikimedia\Rdbms\IDatabase\selectField
selectField( $table, $var, $cond='', $fname=__METHOD__, $options=[], $join_conds=[])
A SELECT wrapper which returns a single field from a single result row.
Wikimedia\Rdbms\IDatabase\getLag
getLag()
Get replica DB lag.
Wikimedia\Rdbms\IDatabase\isReadOnly
isReadOnly()
Wikimedia\Rdbms\IDatabase\reportQueryError
reportQueryError( $error, $errno, $sql, $fname, $tempIgnore=false)
Report a query error.
Wikimedia\Rdbms\IDatabase\insert
insert( $table, $a, $fname=__METHOD__, $options=[])
INSERT wrapper, inserts an array into a table.
Wikimedia\Rdbms\IDatabase\bufferResults
bufferResults( $buffer=null)
Turns buffering of SQL result sets on (true) or off (false).
DBO_TRX
const DBO_TRX
Definition: defines.php:12
Wikimedia\Rdbms\IDatabase\listTables
listTables( $prefix=null, $fname=__METHOD__)
List all tables on the database.
Wikimedia\Rdbms\IDatabase\dbSchema
dbSchema( $schema=null)
Get/set the db schema.
Wikimedia\Rdbms\IDatabase\tableExists
tableExists( $table, $fname=__METHOD__)
Query whether a given table exists.
php
injection txt This is an overview of how MediaWiki makes use of dependency injection The design described here grew from the discussion of RFC T384 The term dependency this means that anything an object needs to operate should be injected from the the object itself should only know narrow no concrete implementation of the logic it relies on The requirement to inject everything typically results in an architecture that based on two main types of and essentially stateless service objects that use other service objects to operate on the value objects As of the beginning MediaWiki is only starting to use the DI approach Much of the code still relies on global state or direct resulting in a highly cyclical dependency which acts as the top level factory for services in MediaWiki which can be used to gain access to default instances of various services MediaWikiServices however also allows new services to be defined and default services to be redefined Services are defined or redefined by providing a callback the instantiator that will return a new instance of the service When it will create an instance of MediaWikiServices and populate it with the services defined in the files listed by thereby bootstrapping the DI framework Per $wgServiceWiringFiles lists includes ServiceWiring php
Definition: injection.txt:35
LIST_AND
const LIST_AND
Definition: Defines.php:44
Wikimedia\Rdbms\IDatabase
Basic database interface for live and lazy-loaded relation database handles.
Definition: IDatabase.php:40
Wikimedia\Rdbms\IDatabase\fieldName
fieldName( $res, $n)
Get a field name in a result object.
Wikimedia\Rdbms\IDatabase\lastDoneWrites
lastDoneWrites()
Returns the last time the connection may have been used for write queries.
DBO_NOBUFFER
const DBO_NOBUFFER
Definition: defines.php:10
Wikimedia\Rdbms\IDatabase\commit
commit( $fname=__METHOD__, $flush='')
Commits a transaction previously started using begin().
Wikimedia\Rdbms\IDatabase\fetchObject
fetchObject( $res)
Fetch the next row from the given result object, in object form.
Wikimedia\Rdbms\IDatabase\getServerUptime
getServerUptime()
Determines how long the server has been up.
Wikimedia\Rdbms\IDatabase\lock
lock( $lockName, $method, $timeout=5)
Acquire a named lock.
Wikimedia\Rdbms\IDatabase\unionSupportsOrderAndLimit
unionSupportsOrderAndLimit()
Returns true if current database backend supports ORDER BY or LIMIT for separate subqueries within th...
Wikimedia\Rdbms\IDatabase\implicitGroupby
implicitGroupby()
Returns true if this database does an implicit sort when doing GROUP BY.
Wikimedia\Rdbms\IDatabase\getSoftwareLink
getSoftwareLink()
Returns a wikitext link to the DB's website, e.g., return "[https://www.mysql.com/ MySQL]"; Should at...
Wikimedia\Rdbms\IDatabase\timestamp
timestamp( $ts=0)
Convert a timestamp in one of the formats accepted by wfTimestamp() to the format used for inserting ...
LIST_OR
const LIST_OR
Definition: Defines.php:47
Wikimedia\Rdbms\IDatabase\freeResult
freeResult( $res)
Free a result object returned by query() or select().
Wikimedia\Rdbms\IDatabase\encodeBlob
encodeBlob( $b)
Some DBMSs have a special format for inserting into blob fields, they don't allow simple quoted strin...
Wikimedia\Rdbms\IDatabase\deleteJoin
deleteJoin( $delTable, $joinTable, $delVar, $joinVar, $conds, $fname=__METHOD__)
DELETE where the condition is a join.
LIST_SET
const LIST_SET
Definition: Defines.php:45
Wikimedia\Rdbms\IDatabase\databasesAreIndependent
databasesAreIndependent()
Returns true if DBs are assumed to be on potentially different servers.
Wikimedia\Rdbms\IDatabase\buildLike
buildLike()
LIKE statement wrapper, receives a variable-length argument list with parts of pattern to match conta...
Wikimedia\Rdbms\IDatabase\wasDeadlock
wasDeadlock()
Determines if the last failure was due to a deadlock.
Wikimedia\Rdbms\IDatabase\anyChar
anyChar()
Returns a token for buildLike() that denotes a '_' to be used in a LIKE query.
$vars
static configuration should be added through ResourceLoaderGetConfigVars instead & $vars
Definition: hooks.txt:2198
Wikimedia\Rdbms\IDatabase\open
open( $server, $user, $password, $dbName)
Open a connection to the database.
Wikimedia\Rdbms\IDatabase\decodeExpiry
decodeExpiry( $expiry, $format=TS_MW)
Decode an expiry time into a DBMS independent format.
Wikimedia\Rdbms\IDatabase\wasLockTimeout
wasLockTimeout()
Determines if the last failure was due to a lock timeout.
LIST_COMMA
const LIST_COMMA
Definition: Defines.php:43
Wikimedia\Rdbms\IDatabase\setTableAliases
setTableAliases(array $aliases)
Make certain table names use their own database, schema, and table prefix when passed into SQL querie...
Wikimedia\Rdbms\IDatabase\setLBInfo
setLBInfo( $name, $value=null)
Set the LB info array, or a member of it.
DBO_COMPRESS
const DBO_COMPRESS
Definition: defines.php:18
$value
$value
Definition: styleTest.css.php:45
Wikimedia\Rdbms\IDatabase\unlock
unlock( $lockName, $method)
Release a lock.
Wikimedia\Rdbms\IDatabase\lastQuery
lastQuery()
Return the last query that went through IDatabase::query()
Wikimedia\Rdbms\IDatabase\selectRow
selectRow( $table, $vars, $conds, $fname=__METHOD__, $options=[], $join_conds=[])
Single row SELECT wrapper.
DBO_DDLMODE
const DBO_DDLMODE
Definition: defines.php:16
Wikimedia\Rdbms\IDatabase\getScopedLockAndFlush
getScopedLockAndFlush( $lockKey, $fname, $timeout)
Acquire a named lock, flush any transaction, and return an RAII style unlocker object.
Wikimedia\Rdbms\IDatabase\explicitTrxActive
explicitTrxActive()
Wikimedia\Rdbms\IDatabase\buildStringCast
buildStringCast( $field)
Wikimedia\Rdbms\IDatabase\getDomainID
getDomainID()
Wikimedia\Rdbms\IDatabase\buildConcat
buildConcat( $stringList)
Build a concatenation list to feed into a SQL query.
Wikimedia\Rdbms\IDatabase\setTransactionListener
setTransactionListener( $name, callable $callback=null)
Run a callback each time any transaction commits or rolls back.
Wikimedia\Rdbms\IDatabase\getDBname
getDBname()
Get the current DB name.
Wikimedia\Rdbms\IDatabase\selectRowCount
selectRowCount( $tables, $vars=' *', $conds='', $fname=__METHOD__, $options=[], $join_conds=[])
Get the number of rows in dataset.
Wikimedia\Rdbms\IDatabase\wasReadOnlyError
wasReadOnlyError()
Determines if the last failure was due to the database being read-only.
Wikimedia\Rdbms\IDatabase\strreplace
strreplace( $orig, $old, $new)
Returns a command for str_replace function in SQL query.
Wikimedia\Rdbms\IDatabase\bitOr
bitOr( $fieldLeft, $fieldRight)
Wikimedia\Rdbms\IDatabase\rollback
rollback( $fname=__METHOD__, $flush='')
Rollback a transaction previously started using begin().
Wikimedia\Rdbms\IDatabase\pendingWriteCallers
pendingWriteCallers()
Get the list of method names that did write queries for this transaction.
Wikimedia\Rdbms\IDatabase\fetchRow
fetchRow( $res)
Fetch the next row from the given result object, in associative array form.
DBO_SYSDBA
const DBO_SYSDBA
Definition: defines.php:15
Wikimedia\Rdbms\IDatabase\anyString
anyString()
Returns a token for buildLike() that denotes a '' to be used in a LIKE query.
Wikimedia\Rdbms\IDatabase\fieldInfo
fieldInfo( $table, $field)
mysql_fetch_field() wrapper Returns false if the field doesn't exist
Wikimedia\Rdbms\IDatabase\upsert
upsert( $table, array $rows, array $uniqueIndexes, array $set, $fname=__METHOD__)
INSERT ON DUPLICATE KEY UPDATE wrapper, upserts an array into a table.
Wikimedia\Rdbms\IDatabase\update
update( $table, $values, $conds, $fname=__METHOD__, $options=[])
UPDATE wrapper.
Wikimedia\Rdbms\IDatabase\getReplicaPos
getReplicaPos()
Get the replication position of this replica DB.
Wikimedia\Rdbms\IDatabase\getFlag
getFlag( $flag)
Returns a boolean whether the flag $flag is set for this connection.
Wikimedia\Rdbms\IDatabase\masterPosWait
masterPosWait(DBMasterPos $pos, $timeout)
Wait for the replica DB to catch up to a given master position.
Wikimedia\Rdbms\IDatabase\onTransactionIdle
onTransactionIdle(callable $callback, $fname=__METHOD__)
Run a callback as soon as there is no transaction pending.
Wikimedia\Rdbms\IDatabase\bitAnd
bitAnd( $fieldLeft, $fieldRight)
Wikimedia\Rdbms\IDatabase\lockIsFree
lockIsFree( $lockName, $method)
Check to see if a named lock is available (non-blocking)
Wikimedia\Rdbms\IDatabase\selectDB
selectDB( $db)
Change the current database.
Wikimedia\Rdbms\IDatabase\lastErrno
lastErrno()
Get the last error number.
Wikimedia\Rdbms\IDatabase\fieldExists
fieldExists( $table, $field, $fname=__METHOD__)
Determines whether a field exists in a table.
Wikimedia\Rdbms\IDatabase\aggregateValue
aggregateValue( $valuedata, $valuename='value')
Return aggregated value alias.
Wikimedia\Rdbms\IDatabase\selectSQLText
selectSQLText( $table, $vars, $conds='', $fname=__METHOD__, $options=[], $join_conds=[])
The equivalent of IDatabase::select() except that the constructed SQL is returned,...
$rows
do that in ParserLimitReportFormat instead use this to modify the parameters of the image all existing parser cache entries will be invalid To avoid you ll need to handle that somehow(e.g. with the RejectParserCacheValue hook) because MediaWiki won 't do it for you. & $defaults also a ContextSource after deleting those rows but within the same transaction $rows
Definition: hooks.txt:2581
Wikimedia\Rdbms\IDatabase\setSchemaVars
setSchemaVars( $vars)
Set variables to be used in sourceFile/sourceStream, in preference to the ones in $GLOBALS.
$options
null means default in associative array with keys and values unescaped Should be merged with default with a value of false meaning to suppress the attribute in associative array with keys and values unescaped & $options
Definition: hooks.txt:1965
Wikimedia\Rdbms\IDatabase\addQuotes
addQuotes( $s)
Adds quotes and backslashes.
Wikimedia\Rdbms\IDatabase\unionConditionPermutations
unionConditionPermutations( $table, $vars, array $permute_conds, $extra_conds='', $fname=__METHOD__, $options=[], $join_conds=[])
Construct a UNION query for permutations of conditions.
Wikimedia\Rdbms\IDatabase\onTransactionPreCommitOrIdle
onTransactionPreCommitOrIdle(callable $callback, $fname=__METHOD__)
Run a callback before the current transaction commits or now if there is none.
Wikimedia\Rdbms\IDatabase\makeWhereFrom2d
makeWhereFrom2d( $data, $baseKey, $subKey)
Build a partial where clause from a 2-d array such as used for LinkBatch.
Wikimedia\Rdbms\IDatabase\selectFieldValues
selectFieldValues( $table, $var, $cond='', $fname=__METHOD__, $options=[], $join_conds=[])
A SELECT wrapper which returns a list of single field values from result rows.
Wikimedia\Rdbms\IDatabase\getType
getType()
Get the type of the DBMS, as it appears in $wgDBtype.
Wikimedia\Rdbms\IDatabase\select
select( $table, $vars, $conds='', $fname=__METHOD__, $options=[], $join_conds=[])
Execute a SELECT query constructed using the various parameters provided.
Wikimedia\Rdbms\IDatabase\getLBInfo
getLBInfo( $name=null)
Get properties passed down from the server info array of the load balancer.
Wikimedia\Rdbms\IDatabase\timestampOrNull
timestampOrNull( $ts=null)
Convert a timestamp in one of the formats accepted by wfTimestamp() to the format used for inserting ...
Wikimedia\Rdbms\IDatabase\buildGroupConcatField
buildGroupConcatField( $delim, $table, $field, $conds='', $join_conds=[])
Build a GROUP_CONCAT or equivalent statement for a query.
Wikimedia\Rdbms\IDatabase\serverIsReadOnly
serverIsReadOnly()
class
you have access to all of the normal MediaWiki so you can get a DB use the etc For full docs on the Maintenance class
Definition: maintenance.txt:52
Wikimedia\Rdbms\IDatabase\dataSeek
dataSeek( $res, $row)
Change the position of the cursor in a result object.
LIST_NAMES
const LIST_NAMES
Definition: Defines.php:46
Wikimedia\Rdbms\IDatabase\insertId
insertId()
Get the inserted value of an auto-increment row.
Wikimedia\Rdbms\IDatabase\setLazyMasterHandle
setLazyMasterHandle(IDatabase $conn)
Set a lazy-connecting DB handle to the master DB (for replication status purposes)
Wikimedia\Rdbms\IDatabase\onTransactionResolution
onTransactionResolution(callable $callback, $fname=__METHOD__)
Run a callback as soon as the current transaction commits or rolls back.
Wikimedia\Rdbms\IDatabase\setSessionOptions
setSessionOptions(array $options)
Override database's default behavior.
Wikimedia\Rdbms\IDatabase\conditional
conditional( $cond, $trueVal, $falseVal)
Returns an SQL expression for a simple conditional.
Wikimedia\Rdbms\IDatabase\indexUnique
indexUnique( $table, $index)
Determines if a given index is unique.
DBO_DEFAULT
const DBO_DEFAULT
Definition: defines.php:13
Wikimedia\Rdbms\IDatabase\setFlag
setFlag( $flag, $remember=self::REMEMBER_NOTHING)
Set a flag for this connection.
Wikimedia\Rdbms\IDatabase\nextSequenceValue
nextSequenceValue( $seqName)
Deprecated method, calls should be removed.
Wikimedia\Rdbms\IDatabase\restoreFlags
restoreFlags( $state=self::RESTORE_PRIOR)
Restore the flags to their prior state before the last setFlag/clearFlag call.
Wikimedia\Rdbms\IDatabase\estimateRowCount
estimateRowCount( $table, $vars=' *', $conds='', $fname=__METHOD__, $options=[])
Estimate the number of rows in dataset.
Wikimedia\Rdbms\IDatabase\begin
begin( $fname=__METHOD__, $mode=self::TRANSACTION_EXPLICIT)
Begin a transaction.
$buffer
$buffer
Definition: mwdoc-filter.php:49
Wikimedia\Rdbms\IDatabase\indexExists
indexExists( $table, $index, $fname=__METHOD__)
Determines whether an index exists Usually throws a DBQueryError on failure If errors are explicitly ...
array
the array() calling protocol came about after MediaWiki 1.4rc1.
Wikimedia\Rdbms\IDatabase\clearFlag
clearFlag( $flag, $remember=self::REMEMBER_NOTHING)
Clear a flag for this connection.
Wikimedia\Rdbms\IDatabase\startAtomic
startAtomic( $fname=__METHOD__)
Begin an atomic section of statements.
Wikimedia\Rdbms\IDatabase\pendingWriteRowsAffected
pendingWriteRowsAffected()
Get the number of affected rows from pending write queries.
Wikimedia\Rdbms\IDatabase\namedLocksEnqueue
namedLocksEnqueue()
Check to see if a named lock used by lock() use blocking queues.
$type
$type
Definition: testCompression.php:48
Wikimedia\Rdbms\IDatabase\writesOrCallbacksPending
writesOrCallbacksPending()
Returns true if there is a transaction open with possible write queries or transaction pre-commit/idl...