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Wikimedia\Rdbms\DatabaseMysqlBase Class Reference

MySQL database abstraction layer. More...

Inheritance diagram for Wikimedia\Rdbms\DatabaseMysqlBase:
Collaboration diagram for Wikimedia\Rdbms\DatabaseMysqlBase:

Public Member Functions

 __construct (array $params)
 Additional $params include: More...
 
 doLock (string $lockName, string $method, int $timeout)
 
 doLockIsFree (string $lockName, string $method)
 
 doUnlock (string $lockName, string $method)
 
 duplicateTableStructure ( $oldName, $newName, $temporary=false, $fname=__METHOD__)
 
 estimateRowCount ( $tables, $var=' *', $conds='', $fname=__METHOD__, $options=[], $join_conds=[])
 Estimate rows in dataset Returns estimated count, based on EXPLAIN output Takes same arguments as Database::select() More...
 
 fieldInfo ( $table, $field)
 
 getPrimaryPos ()
 Get the position of the primary DB from SHOW MASTER STATUS. More...
 
 getReplicaPos ()
 Get the position of the primary DB from SHOW SLAVE STATUS. More...
 
 getServerVersion ()
 
 getSoftwareLink ()
 
 getTopologyBasedServerId ()
 Get a non-recycled ID that uniquely identifies this server within the replication topology.A replication topology defines which servers can originate changes to a given dataset and how those changes propagate among database servers. It is assumed that the server only participates in the replication of a single relevant dataset.
Returns
string|null 32, 64, or 128 bit integer ID; null if not applicable or unknown
Exceptions
DBQueryError
Since
1.37
More...
 
 getType ()
 
 indexInfo ( $table, $index, $fname=__METHOD__)
 Get information about an index into an object Returns false if the index does not exist. More...
 
 isView ( $name, $prefix=null)
 Differentiates between a TABLE and a VIEW. More...
 
 lastError ()
 
 listTables ( $prefix=null, $fname=__METHOD__)
 List all tables on the database. More...
 
 listViews ( $prefix=null, $fname=__METHOD__)
 Lists VIEWs in the database. More...
 
 namedLocksEnqueue ()
 Check to see if a named lock used by lock() use blocking queues.
Returns
bool
Since
1.26
Stability: stable
to override
More...
 
 primaryPosWait (DBPrimaryPos $pos, $timeout)
 Wait for the replica server to catch up to a given primary server position.Note that this does not start any new transactions.Callers might want to flush any existing transaction before invoking this method. Upon success, this assures that replica server queries will reflect all changes up to the given position, without interference from prior REPEATABLE-READ snapshots.
Parameters
DBPrimaryPos$pos
int$timeoutThe maximum number of seconds to wait for synchronisation
Returns
int|null Zero if the replica DB server was past that position already, greater than zero if we waited for some period of time, less than zero if it timed out, and null on error
Exceptions
DBErrorIf an error occurs, {
See also
query}
Since
1.37
Since
1.37
Stability: stable
to override
More...
 
 selectSQLText ( $table, $vars, $conds='', $fname=__METHOD__, $options=[], $join_conds=[])
 Take the same arguments as IDatabase::select() and return the SQL it would use. More...
 
 serverIsReadOnly ()
 
Returns
bool Whether the DB server is marked as read-only server-side
Exceptions
DBErrorIf an error occurs, {
See also
query}
Since
1.28
Stability: stable
to override
More...
 
 setBigSelects ( $value=true)
 
 setSessionOptions (array $options)
 
 streamStatementEnd (&$sql, &$newLine)
 
 strencode ( $s)
 
 tableExists ( $table, $fname=__METHOD__)
 Query whether a given table exists. More...
 
 wasDeadlock ()
 Determines if the last failure was due to a deadlock. More...
 
 wasLockTimeout ()
 Determines if the last failure was due to a lock timeout. More...
 
 wasReadOnlyError ()
 Determines if the last failure was due to the database being read-only. More...
 
- Public Member Functions inherited from Wikimedia\Rdbms\Database
 __clone ()
 Make sure that copies do not share the same client binding handle. More...
 
 __destruct ()
 Run a few simple checks and close dangling connections. More...
 
 __sleep ()
 Called by serialize. More...
 
 __toString ()
 Get a debugging string that mentions the database type, the ID of this instance, and the ID of any underlying connection resource or driver object if one is present. More...
 
 addIdentifierQuotes ( $s)
 Escape a SQL identifier (e.g. More...
 
 addQuotes ( $s)
 Escape and quote a raw value string for use in a SQL query.
Parameters
string | int | float | null | bool | Blob$s
Returns
string
More...
 
 affectedRows ()
 Get the number of rows affected by the last write query. More...
 
 anyChar ()
 Returns a token for buildLike() that denotes a '_' to be used in a LIKE query. More...
 
 anyString ()
 Returns a token for buildLike() that denotes a '' to be used in a LIKE query. More...
 
 begin ( $fname=__METHOD__, $mode=self::TRANSACTION_EXPLICIT)
 Begin a transaction. More...
 
 bitAnd ( $fieldLeft, $fieldRight)
 
 bitNot ( $field)
 
 bitOr ( $fieldLeft, $fieldRight)
 
 buildComparison (string $op, array $conds)
 Build a condition comparing multiple values, for use with indexes that cover multiple fields, common when e.g. More...
 
 buildConcat ( $stringList)
 Build a concatenation list to feed into a SQL query. More...
 
 buildExcludedValue ( $column)
 Build a reference to a column value from the conflicting proposed upsert() row. More...
 
 buildGreatest ( $fields, $values)
 Build a GREATEST function statement comparing columns/values. More...
 
 buildGroupConcatField ( $delim, $table, $field, $conds='', $join_conds=[])
 Build a GROUP_CONCAT or equivalent statement for a query. More...
 
 buildIntegerCast ( $field)
 
 buildLeast ( $fields, $values)
 Build a LEAST function statement comparing columns/values. More...
 
 buildLike ( $param,... $params)
 LIKE statement wrapper. More...
 
 buildSelectSubquery ( $table, $vars, $conds='', $fname=__METHOD__, $options=[], $join_conds=[])
 Equivalent to IDatabase::selectSQLText() except wraps the result in Subquery. More...
 
 buildStringCast ( $field)
 
 buildSubstring ( $input, $startPosition, $length=null)
 
 cancelAtomic ( $fname=__METHOD__, AtomicSectionIdentifier $sectionId=null)
 Cancel an atomic section of SQL statements. More...
 
 clearFlag ( $flag, $remember=self::REMEMBER_NOTHING)
 Clear a flag for this connection. More...
 
 close ( $fname=__METHOD__)
 Close the database connection. More...
 
 commit ( $fname=__METHOD__, $flush=self::FLUSHING_ONE)
 Commits a transaction previously started using begin() More...
 
 conditional ( $cond, $caseTrueExpression, $caseFalseExpression)
 Returns an SQL expression for a simple conditional. More...
 
 connectionErrorLogger ( $errno, $errstr)
 Error handler for logging errors during database connection. More...
 
 databasesAreIndependent ()
 Returns true if DBs are assumed to be on potentially different servers.In systems like mysql/mariadb, different databases can easily be referenced on a single connection merely by name, even in a single query via JOIN. On the other hand, Postgres treats databases as logically separate, with different database users, requiring special mechanisms like postgres_fdw to "mount" foreign DBs. This is true even among DBs on the same server. Changing the selected database via selectDomain() requires a new connection.
Returns
bool
Since
1.29
More...
 
 dbSchema ( $schema=null)
 Get/set the db schema. More...
 
 deadlockLoop (... $args)
 Perform a deadlock-prone transaction.This function invokes a callback function to perform a set of write queries. If a deadlock occurs during the processing, the transaction will be rolled back and the callback function will be called again.Avoid using this method outside of Job or Maintenance classes.Usage: $dbw->deadlockLoop( callback, ... );Extra arguments are passed through to the specified callback function. This method requires that no transactions are already active to avoid causing premature commits or exceptions.Returns whatever the callback function returned on its successful, iteration, or false on error, for example if the retry limit was reached.
Parameters
mixed...$args
Returns
mixed
Exceptions
DBUnexpectedError
Exception
More...
 
 decodeBlob ( $b)
 Some DBMSs return a special placeholder object representing blob fields in result objects.Pass the object through this function to return the original string.
Parameters
string | Blob$b
Returns
string
Exceptions
DBError
More...
 
 decodeExpiry ( $expiry, $format=TS_MW)
 Decode an expiry time into a DBMS independent format. More...
 
 delete ( $table, $conds, $fname=__METHOD__)
 Delete all rows in a table that match a condition. More...
 
 deleteJoin ( $delTable, $joinTable, $delVar, $joinVar, $conds, $fname=__METHOD__)
 Delete all rows in a table that match a condition which includes a join.For safety, an empty $conds will not delete everything. If you want to delete all rows where the join condition matches, set $conds=IDatabase::ALL_ROWS.DO NOT put the join condition in $conds.
Parameters
string$delTableThe table to delete from.
string$joinTableThe reference table used by the join (not modified).
string$delVarThe variable to join on, in the first table.
string$joinVarThe variable to join on, in the second table.
array | string$condsCondition array of field names mapped to variables, ANDed together in the WHERE clause
string$fnameCalling function name (use METHOD) for logs/profiling
Exceptions
DBErrorIf an error occurs, {
See also
query}
More...
 
 doAtomicSection ( $fname, callable $callback, $cancelable=self::ATOMIC_NOT_CANCELABLE)
 Perform an atomic section of reversible SQL statements from a callback. More...
 
 dropTable ( $table, $fname=__METHOD__)
 Delete a table. More...
 
 encodeBlob ( $b)
 Some DBMSs have a special format for inserting into blob fields, they don't allow simple quoted strings to be inserted.To insert into such a field, pass the data through this function before passing it to IDatabase::insert().
Parameters
string$b
Returns
string|Blob
Exceptions
DBError
More...
 
 encodeExpiry ( $expiry)
 Encode an expiry time into the DBMS dependent format. More...
 
 endAtomic ( $fname=__METHOD__)
 Ends an atomic section of SQL statements. More...
 
 explicitTrxActive ()
 Check whether there is a transaction open at the specific request of a caller. More...
 
 factorConds ( $condsArray)
 Given an array of condition arrays representing an OR list of AND lists, for example: More...
 
 fieldExists ( $table, $field, $fname=__METHOD__)
 Determines whether a field exists in a table. More...
 
 flushSession ( $fname=__METHOD__, $flush=self::FLUSHING_ONE)
 Release important session-level state (named lock, table locks) as post-rollback cleanup. More...
 
 flushSnapshot ( $fname=__METHOD__, $flush=self::FLUSHING_ONE)
 Commit any transaction but error out if writes or callbacks are pending. More...
 
 getDBname ()
 Get the current database name; null if there isn't one. More...
 
 getDomainID ()
 Return the currently selected domain ID. More...
 
 getFlag ( $flag)
 Returns a boolean whether the flag $flag is set for this connection. More...
 
 getInfinity ()
 Find out when 'infinity' is. More...
 
 getLag ()
 Get the amount of replication lag for this database server. More...
 
 getLBInfo ( $name=null)
 Get properties passed down from the server info array of the load balancer. More...
 
 getScopedLockAndFlush ( $lockKey, $fname, $timeout)
 Acquire a named lock, flush any transaction, and return an RAII style unlocker object. More...
 
 getServer ()
 Get the hostname or IP address of the server. More...
 
 getServerInfo ()
 Get a human-readable string describing the current software version. More...
 
 getServerName ()
 Get the readable name for the server. More...
 
 getSessionLagStatus ()
 Get the replica server lag when the current transaction started or a general lag estimate if not transaction is active. More...
 
 getTableAliases ()
 Return current table aliases. More...
 
 getTopologyRole ()
 Get the replication topology role of this server. More...
 
 getValueTypesForWithClause ( $table)
 
 implicitOrderby ()
 Returns true if this database does an implicit order by when the column has an index For example: SELECT page_title FROM page LIMIT 1. More...
 
 indexExists ( $table, $index, $fname=__METHOD__)
 Determines whether an index exists. More...
 
 indexUnique ( $table, $index, $fname=__METHOD__)
 Determines if a given index is unique.
Parameters
string$table
string$index
string$fnameCalling function name
Returns
bool
More...
 
 initConnection ()
 Initialize the connection to the database over the wire (or to local files) More...
 
 insert ( $table, $rows, $fname=__METHOD__, $options=[])
 Insert row(s) into a table, in the provided order. More...
 
 insertSelect ( $destTable, $srcTable, $varMap, $conds, $fname=__METHOD__, $insertOptions=[], $selectOptions=[], $selectJoinConds=[])
 INSERT SELECT wrapper. More...
 
 isOpen ()
 
 isQuotedIdentifier ( $name)
 
 isReadOnly ()
 
 lastDoneWrites ()
 Get the last time the connection may have been used for a write query. More...
 
 lastQuery ()
 Get the last query that sent on account of IDatabase::query() More...
 
 limitResult ( $sql, $limit, $offset=false)
 Construct a LIMIT query with optional offset. More...
 
 lock ( $lockName, $method, $timeout=5, $flags=0)
 Acquire a named lock.Named locks are not related to transactions
Parameters
string$lockNameName of lock to acquire
string$methodName of the calling method
int$timeoutAcquisition timeout in seconds (0 means non-blocking)
int$flagsBit field of IDatabase::LOCK_* constants
Returns
bool|float|null Success (bool); acquisition time (float/null) if LOCK_TIMESTAMP
Exceptions
DBErrorIf an error occurs, {
See also
query}
More...
 
 lockForUpdate ( $table, $conds='', $fname=__METHOD__, $options=[], $join_conds=[])
 Lock all rows meeting the given conditions/options FOR UPDATE. More...
 
 lockIsFree ( $lockName, $method)
 Check to see if a named lock is not locked by any thread (non-blocking)
Parameters
string$lockNameName of lock to poll
string$methodName of method calling us
Returns
bool
Exceptions
DBErrorIf an error occurs, {
See also
query}
Since
1.20
More...
 
 makeList (array $a, $mode=self::LIST_COMMA)
 Makes an encoded list of strings from an array. More...
 
 makeWhereFrom2d ( $data, $baseKey, $subKey)
 Build a partial where clause from a 2-d array such as used for LinkBatch. More...
 
 newSelectQueryBuilder ()
 Create an empty SelectQueryBuilder which can be used to run queries against this connection.
Note
A new query builder must be created per query. Query builders should not be reused since this uses a fluent interface and the state of the builder changes during the query which may cause unexpected results.
Returns
SelectQueryBuilder
More...
 
 nextSequenceValue ( $seqName)
 Deprecated method, calls should be removed. More...
 
 onAtomicSectionCancel (callable $callback, $fname=__METHOD__)
 Run a callback when the atomic section is cancelled. More...
 
 onTransactionCommitOrIdle (callable $callback, $fname=__METHOD__)
 Run a callback when the current transaction commits or now if there is none. More...
 
 onTransactionPreCommitOrIdle (callable $callback, $fname=__METHOD__)
 Run a callback before the current transaction commits or now if there is none. More...
 
 onTransactionResolution (callable $callback, $fname=__METHOD__)
 Run a callback when the current transaction commits or rolls back. More...
 
 pendingWriteAndCallbackCallers ()
 
 pendingWriteCallers ()
 Get the list of method names that did write queries for this transaction. More...
 
 pendingWriteQueryDuration ( $type=self::ESTIMATE_TOTAL)
 Get the time spend running write queries for this transaction. More...
 
 ping ()
 Ping the server and try to reconnect if it there is no connection. More...
 
 query ( $sql, $fname=__METHOD__, $flags=0)
 Run an SQL query statement and return the result. More...
 
 queryMulti (array $sqls, string $fname=__METHOD__, int $flags=0, ?string $summarySql=null)
 Run a batch of SQL query statements and return the results. More...
 
 replace ( $table, $uniqueKeys, $rows, $fname=__METHOD__)
 Insert row(s) into a table, in the provided order, while deleting conflicting rows. More...
 
 reportQueryError ( $error, $errno, $sql, $fname, $ignore=false)
 Report a query error. More...
 
 restoreFlags ( $state=self::RESTORE_PRIOR)
 Restore the flags to their prior state before the last setFlag/clearFlag call. More...
 
 rollback ( $fname=__METHOD__, $flush=self::FLUSHING_ONE)
 Rollback a transaction previously started using begin() More...
 
 runOnTransactionIdleCallbacks ( $trigger, array &$errors=[])
 Consume and run any "on transaction idle/resolution" callbacks. More...
 
 runOnTransactionPreCommitCallbacks ()
 
 runTransactionListenerCallbacks ( $trigger, array &$errors=[])
 Actually run any "transaction listener" callbacks. More...
 
 select ( $table, $vars, $conds='', $fname=__METHOD__, $options=[], $join_conds=[])
 Execute a SELECT query constructed using the various parameters provided. More...
 
 selectDB ( $db)
 Change the current database. More...
 
 selectDomain ( $domain)
 Set the current domain (database, schema, and table prefix) More...
 
 selectField ( $table, $var, $cond='', $fname=__METHOD__, $options=[], $join_conds=[])
 A SELECT wrapper which returns a single field from a single result row. More...
 
 selectFieldValues ( $table, $var, $cond='', $fname=__METHOD__, $options=[], $join_conds=[])
 A SELECT wrapper which returns a list of single field values from result rows. More...
 
 selectRow ( $table, $vars, $conds, $fname=__METHOD__, $options=[], $join_conds=[])
 Wrapper to IDatabase::select() that only fetches one row (via LIMIT) More...
 
 selectRowCount ( $tables, $var=' *', $conds='', $fname=__METHOD__, $options=[], $join_conds=[])
 Get the number of rows in dataset. More...
 
 sessionLocksPending ()
 
 setFlag ( $flag, $remember=self::REMEMBER_NOTHING)
 Set a flag for this connection. More...
 
 setIndexAliases (array $aliases)
 Convert certain index names to alternative names before querying the DB. More...
 
 setLBInfo ( $nameOrArray, $value=null)
 Set the entire array or a particular key of the managing load balancer info array. More...
 
 setLogger (LoggerInterface $logger)
 Set the PSR-3 logger interface to use for query logging. More...
 
 setSchemaVars ( $vars)
 Set schema variables to be used when streaming commands from SQL files or stdin. More...
 
 setTableAliases (array $aliases)
 Make certain table names use their own database, schema, and table prefix when passed into SQL queries pre-escaped and without a qualified database name. More...
 
 setTransactionListener ( $name, callable $callback=null)
 Run a callback after each time any transaction commits or rolls back. More...
 
 setTransactionManager (TransactionManager $transactionManager)
 
 setTrxEndCallbackSuppression ( $suppress)
 Whether to disable running of post-COMMIT/ROLLBACK callbacks. More...
 
 sourceFile ( $filename, callable $lineCallback=null, callable $resultCallback=null, $fname=false, callable $inputCallback=null)
 Read and execute SQL commands from a file. More...
 
 sourceStream ( $fp, callable $lineCallback=null, callable $resultCallback=null, $fname=__METHOD__, callable $inputCallback=null)
 Read and execute commands from an open file handle. More...
 
 startAtomic ( $fname=__METHOD__, $cancelable=self::ATOMIC_NOT_CANCELABLE)
 Begin an atomic section of SQL statements. More...
 
 strreplace ( $orig, $old, $new)
 Returns a SQL expression for simple string replacement (e.g. More...
 
 tableName ( $name, $format='quoted')
 Format a table name ready for use in constructing an SQL query. More...
 
 tableNames (... $tables)
 Fetch a number of table names into an associative array. More...
 
 tableNamesN (... $tables)
 Fetch a number of table names into a zero-indexed numerical array. More...
 
 tablePrefix ( $prefix=null)
 Get/set the table prefix. More...
 
 textFieldSize ( $table, $field)
 Returns the size of a text field, or -1 for "unlimited".
Parameters
string$table
string$field
Returns
int
More...
 
 timestamp ( $ts=0)
 Convert a timestamp in one of the formats accepted by ConvertibleTimestamp to the format used for inserting into timestamp fields in this DBMS. More...
 
 timestampOrNull ( $ts=null)
 Convert a timestamp in one of the formats accepted by ConvertibleTimestamp to the format used for inserting into timestamp fields in this DBMS. More...
 
 truncate ( $tables, $fname=__METHOD__)
 Delete all data in a table(s) and reset any sequences owned by that table(s) More...
 
 trxLevel ()
 Gets the current transaction level. More...
 
 trxStatus ()
 
 trxTimestamp ()
 Get the UNIX timestamp of the time that the transaction was established. More...
 
 unionConditionPermutations ( $table, $vars, array $permute_conds, $extra_conds='', $fname=__METHOD__, $options=[], $join_conds=[])
 Construct a UNION query for permutations of conditions. More...
 
 unionQueries ( $sqls, $all)
 Construct a UNION query. More...
 
 unionSupportsOrderAndLimit ()
 Determine if the RDBMS supports ORDER BY and LIMIT for separate subqueries within UNION. More...
 
 unlock ( $lockName, $method)
 Release a lock.Named locks are not related to transactions
Parameters
string$lockNameName of lock to release
string$methodName of the calling method
Returns
bool Success
Exceptions
DBErrorIf an error occurs, {
See also
query}
More...
 
 update ( $table, $set, $conds, $fname=__METHOD__, $options=[])
 Update all rows in a table that match a given condition. More...
 
 upsert ( $table, array $rows, $uniqueKeys, array $set, $fname=__METHOD__)
 Upsert row(s) into a table, in the provided order, while updating conflicting rows. More...
 
 wasConnectionLoss ()
 Determines if the last query error was due to a dropped connection.Note that during a connection loss, the prior transaction will have been lost
Returns
bool
Since
1.31
More...
 
 wasErrorReissuable ()
 Determines if the last query error was due to something outside of the query itself. More...
 
 writesOrCallbacksPending ()
 Whether there is a transaction open with either possible write queries or unresolved pre-commit/commit/resolution callbacks pending. More...
 
 writesPending ()
 
- Public Member Functions inherited from Wikimedia\Rdbms\IDatabase
 insertId ()
 Get the inserted value of an auto-increment row. More...
 
 lastErrno ()
 Get the RDBMS-specific error code from the last query statement. More...
 
- Public Member Functions inherited from Wikimedia\Rdbms\Platform\ISQLPlatform
 buildSubString ( $input, $startPosition, $length=null)
 Build a SUBSTRING function. More...
 

Protected Member Functions

 doFlushSession ( $fname)
 Reset the server-side session state for named locks and table locks. More...
 
 doGetLag ()
 Get the amount of replication lag for this database server. More...
 
 doReplace ( $table, array $identityKey, array $rows, $fname)
 
 doSelectDomain (DatabaseDomain $domain)
 
 doUpsert (string $table, array $rows, array $identityKey, array $set, string $fname)
 Perform an UPSERT query. More...
 
 fetchSecondsSinceHeartbeat ()
 
 getApproximateLagStatus ()
 Get a replica DB lag estimate for this server at the start of a transaction. More...
 
 getLagFromPtHeartbeat ()
 
 getLagFromSlaveStatus ()
 
 getMySqlServerVariant ()
 
 getReplicationSafetyInfo ()
 
 getServerGTIDs ( $fname=__METHOD__)
 
 getServerId ()
 
 getServerRoleStatus ( $role, $fname=__METHOD__)
 
 getServerUUID ()
 
 isConnectionError ( $errno)
 Do not use this method outside of Database/DBError classes. More...
 
 isInsertSelectSafe (array $insertOptions, array $selectOptions)
 
 isKnownStatementRollbackError ( $errno)
 
 isQueryTimeoutError ( $errno)
 Checks whether the cause of the error is detected to be a timeout. More...
 
 mysqlConnect ( $server, $user, $password, $db)
 Open a connection to a MySQL server. More...
 
 mysqlError ( $conn=null)
 Returns the text of the error message from previous MySQL operation. More...
 
 mysqlRealEscapeString ( $s)
 Escape special characters in a string for use in an SQL statement. More...
 
 open ( $server, $user, $password, $db, $schema, $tablePrefix)
 Open a new connection to the database (closing any existing one) More...
 
 useGTIDs ()
 
- Protected Member Functions inherited from Wikimedia\Rdbms\Database
 assertHasConnectionHandle ()
 Make sure there is an open connection handle (alive or not) More...
 
 assertIsWritablePrimary ()
 Make sure that this server is not marked as a replica nor read-only. More...
 
 closeConnection ()
 Closes underlying database connection. More...
 
 commenceCriticalSection (string $fname)
 Demark the start of a critical section of session/transaction state changes. More...
 
 completeCriticalSection (string $fname, ?CriticalSectionScope $csm, Throwable $trxError=null)
 Demark the completion of a critical section of session/transaction state changes. More...
 
 doBegin ( $fname)
 Issues the BEGIN command to the database server. More...
 
 doCommit ( $fname)
 Issues the COMMIT command to the database server. More...
 
 doHandleSessionLossPreconnect ()
 Reset any additional subclass trx* and session* fields. More...
 
 doInitConnection ()
 Actually connect to the database over the wire (or to local files) More...
 
 doInsertSelectGeneric ( $destTable, $srcTable, array $varMap, $conds, $fname, array $insertOptions, array $selectOptions, $selectJoinConds)
 Implementation of insertSelect() based on select() and insert() More...
 
 doInsertSelectNative ( $destTable, $srcTable, array $varMap, $conds, $fname, array $insertOptions, array $selectOptions, $selectJoinConds)
 Native server-side implementation of insertSelect() for situations where we don't want to select everything into memory. More...
 
 doMultiStatementQuery (array $sqls)
 Execute a batch of query statements, aborting remaining statements if one fails. More...
 
 doSingleStatementQuery (string $sql)
 Run a query and return a QueryStatus instance with the query result information. More...
 
 doTruncate (array $tables, $fname)
 
 executeQuery ( $sqls, $fname, $flags, $summarySql)
 Execute a set of queries without enforcing public (non-Database) caller restrictions. More...
 
 fetchAffectedRowCount ()
 
 getBindingHandle ()
 Get the underlying binding connection handle. More...
 
 getLastPHPError ()
 
 getLogContext (array $extras=[])
 Create a log context to pass to PSR-3 logger functions. More...
 
 getReadOnlyReason ()
 
 getRecordedTransactionLagStatus ()
 Get the replica DB lag when the current transaction started. More...
 
 getTempTableWrites ( $sql, $pseudoPermanent)
 
 getTransactionRoundId ()
 
 indexName ( $index)
 
 installErrorHandler ()
 Set a custom error handler for logging errors during database connection. More...
 
 isPristineTemporaryTable ( $table)
 Check if the table is both a TEMPORARY table and has not yet received CRUD operations. More...
 
 newExceptionAfterConnectError ( $error)
 
 registerTempWrites ( $ret, array $changes)
 
 replaceLostConnection ( $lastErrno, $fname)
 Close any existing (dead) database connection and open a new connection. More...
 
 restoreErrorHandler ()
 Restore the previous error handler and return the last PHP error for this DB. More...
 

Protected Attributes

bool null $defaultBigSelects
 
string $lagDetectionMethod
 Method to detect replica DB lag. More...
 
array $lagDetectionOptions = []
 Method to detect replica DB lag. More...
 
MySQLPrimaryPos $lastKnownReplicaPos
 
ISQLPlatform $platform
 
string null $sslCAFile
 
string null $sslCAPath
 
string null $sslCertPath
 
string null $sslCiphers
 Open SSL cipher list string. More...
 
string null $sslKeyPath
 
bool $useGTIDs = false
 bool Whether to use GTID methods More...
 
bool $utf8Mode
 Use experimental UTF-8 transmission encoding. More...
 
- Protected Attributes inherited from Wikimedia\Rdbms\Database
int null $affectedRowCount
 Rows affected by the last query to query() or its CRUD wrappers. More...
 
string $agent
 Agent name for query profiling. More...
 
bool $cliMode
 Whether this PHP instance is for a CLI script. More...
 
object resource null $conn
 Database connection. More...
 
array< string, mixed > $connectionParams
 Connection parameters used by initConnection() and open() More...
 
string[] int[] float[] $connectionVariables
 SQL variables values to use for all new connections. More...
 
LoggerInterface $connLogger
 
CriticalSectionProvider null $csProvider
 
DatabaseDomain $currentDomain
 
string false $delimiter = ';'
 Current SQL query delimiter. More...
 
callable $deprecationLogger
 Deprecation logging callback. More...
 
callable $errorLogger
 Error logging callback. More...
 
DatabaseFlags $flagsHolder
 
string $lastConnectError = ''
 Last error during connection; empty string if none. More...
 
array $lbInfo = []
 Current LoadBalancer tracking information. More...
 
int $nonNativeInsertSelectBatchSize
 Row batch size to use for emulated INSERT SELECT queries. More...
 
string null $password
 Password used to establish the current connection. More...
 
SQLPlatform $platform
 
callable null $profiler
 
LoggerInterface $queryLogger
 
LoggerInterface $replLogger
 
string null $server
 Server that this instance is currently connected to. More...
 
string null $serverName
 Readable name or host/IP of the database server. More...
 
array< string, array > $sessionNamedLocks = []
 Map of (name => (UNIX time,trx ID)) for current lock() mutexes. More...
 
array< string, array > $sessionTempTables = []
 Map of (name => (type,pristine,trx ID)) for current temp tables. More...
 
BagOStuff $srvCache
 APC cache. More...
 
bool $ssl
 Whether to use SSL connections. More...
 
IDatabase $topologicalPrimaryConnRef
 Lazy handle to the most authoritative primary server for the dataset. More...
 
string $topologyRole
 Replication topology role of the server; one of the class ROLE_* constants. More...
 
string null $user
 User that this instance is currently connected under the name of. More...
 
const CONN_HOST = 'host'
 Hostname or IP address to use on all connections. More...
 
const CONN_INITIAL_DB = 'dbname'
 Database name to use on initial connection. More...
 
const CONN_INITIAL_SCHEMA = 'schema'
 Schema name to use on initial connection. More...
 
const CONN_INITIAL_TABLE_PREFIX = 'tablePrefix'
 Table prefix to use on initial connection. More...
 
const CONN_PASSWORD = 'password'
 Database server password to use on all connections. More...
 
const CONN_USER = 'user'
 Database server username to use on all connections. More...
 
const DROPPED_CONN_BLAME_THRESHOLD_SEC = 3.0
 Assume that queries taking this long to yield connection loss errors are at fault. More...
 
const ERR_ABORT_QUERY = 2
 Abort query (no retries) due to a statement rollback (session/transaction intact) More...
 
const ERR_ABORT_SESSION = 8
 Abort and reset session due to server-side session-level state loss (locks, temp tables) More...
 
const ERR_ABORT_TRX = 4
 Abort any current transaction, by rolling it back, due to an error during the query. More...
 
const ERR_NONE = 0
 No errors occurred during the query. More...
 
const ERR_RETRY_QUERY = 1
 Retry query due to a connection loss detected while sending the query (session intact) More...
 

Additional Inherited Members

- Static Public Member Functions inherited from Wikimedia\Rdbms\Database
static attributesFromType ( $dbType, $driver=null)
 
static factory ( $type, $params=[], $connect=self::NEW_CONNECTED)
 Construct a Database subclass instance given a database type and parameters. More...
 
static getAttributes ()
 
static getCacheSetOptions (?IDatabase ... $dbs)
 Merge the result of getSessionLagStatus() for several DBs using the most pessimistic values to estimate the lag of any data derived from them in combination. More...
 
- Public Attributes inherited from Wikimedia\Rdbms\IDatabase
const LOCK_TIMESTAMP = 1
 Flag to return the lock acquisition timestamp (null if not acquired) More...
 
- Public Attributes inherited from Wikimedia\Rdbms\Platform\ISQLPlatform
const QUERY_PSEUDO_PERMANENT = 2
 Track a TEMPORARY table CREATE as if it was for a permanent table (for testing) More...
 

Detailed Description

MySQL database abstraction layer.

Defines methods independent of the used MySQL extension.

TODO: This could probably be merged with DatabaseMysqli. The classees were split to support a transition from the old "mysql" extension to mysqli, and there may be an argument for retaining it in order to support some future transition to something else, but it's complexity and YAGNI.

Since
1.22
See also
Database

Definition at line 42 of file DatabaseMysqlBase.php.

Constructor & Destructor Documentation

◆ __construct()

Wikimedia\Rdbms\DatabaseMysqlBase::__construct ( array  $params)

Additional $params include:

  • lagDetectionMethod : set to one of (Seconds_Behind_Master,pt-heartbeat). pt-heartbeat assumes the table is at heartbeat.heartbeat and uses UTC timestamps in the heartbeat.ts column. (https://www.percona.com/doc/percona-toolkit/2.2/pt-heartbeat.html)
  • lagDetectionOptions : if using pt-heartbeat, this can be set to an array map. The "conds" key overrides the WHERE clause used to find the relevant row in the heartbeat table, e.g. ['shard' => 's1']. By default, the row used is the newest row having a server_id matching that of the immediate replication source server for the given replica.
  • useGTIDs : use GTID methods like MASTER_GTID_WAIT() when possible.
  • insertSelectIsSafe : force that native INSERT SELECT is or is not safe [default: null]
  • sslKeyPath : path to key file [default: null]
  • sslCertPath : path to certificate file [default: null]
  • sslCAFile: path to a single certificate authority PEM file [default: null]
  • sslCAPath : parth to certificate authority PEM directory [default: null]
  • sslCiphers : array list of allowable ciphers [default: null]
    Parameters
    array$params

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 104 of file DatabaseMysqlBase.php.

References Wikimedia\Rdbms\DatabaseMysqlBase\useGTIDs().

Member Function Documentation

◆ doFlushSession()

Wikimedia\Rdbms\DatabaseMysqlBase::doFlushSession (   $fname)
protected

Reset the server-side session state for named locks and table locks.

Connection and query errors will be suppressed and logged

Parameters
string$fname
Since
1.38

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 959 of file DatabaseMysqlBase.php.

References Wikimedia\Rdbms\Database\addQuotes(), Wikimedia\Rdbms\Database\executeQuery(), and Wikimedia\Rdbms\Database\reportQueryError().

◆ doGetLag()

Wikimedia\Rdbms\DatabaseMysqlBase::doGetLag ( )
protected

Get the amount of replication lag for this database server.

Callers should avoid using this method while a transaction is active

See also
getLag()
Stability: stable
to override
Returns
float|int|false Database replication lag in seconds or false on error
Exceptions
DBError

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 450 of file DatabaseMysqlBase.php.

References Wikimedia\Rdbms\DatabaseMysqlBase\getLagFromPtHeartbeat(), and Wikimedia\Rdbms\DatabaseMysqlBase\getLagFromSlaveStatus().

◆ doLock()

Wikimedia\Rdbms\DatabaseMysqlBase::doLock ( string  $lockName,
string  $method,
int  $timeout 
)
See also
lock()
Parameters
string$lockName
string$method
int$timeout
Returns
float|null UNIX timestamp of lock acquisition; null on failure
Exceptions
DBError
Stability: stable
to override

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 933 of file DatabaseMysqlBase.php.

References $res, and Wikimedia\Rdbms\Database\query().

◆ doLockIsFree()

Wikimedia\Rdbms\DatabaseMysqlBase::doLockIsFree ( string  $lockName,
string  $method 
)
See also
lockIsFree()
Parameters
string$lockName
string$method
Returns
bool Success
Exceptions
DBError
Stability: stable
to override

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 922 of file DatabaseMysqlBase.php.

References $res, and Wikimedia\Rdbms\Database\query().

◆ doReplace()

Wikimedia\Rdbms\DatabaseMysqlBase::doReplace (   $table,
array  $identityKey,
array  $rows,
  $fname 
)
protected
Parameters
string$table
string[]$identityKeyList of columns defining a unique key
array$rowsNon-empty list of rows
string$fname
See also
Database::replace()
Stability: stable
to override
Since
1.35

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 1022 of file DatabaseMysqlBase.php.

References Wikimedia\Rdbms\Database\query(), and Wikimedia\Rdbms\Database\tableName().

◆ doSelectDomain()

◆ doUnlock()

Wikimedia\Rdbms\DatabaseMysqlBase::doUnlock ( string  $lockName,
string  $method 
)
See also
unlock()
Parameters
string$lockName
string$method
Returns
bool Success
Exceptions
DBError
Stability: stable
to override

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 944 of file DatabaseMysqlBase.php.

References $res, and Wikimedia\Rdbms\Database\query().

◆ doUpsert()

Wikimedia\Rdbms\DatabaseMysqlBase::doUpsert ( string  $table,
array  $rows,
array  $identityKey,
array  $set,
string  $fname 
)
protected

Perform an UPSERT query.

See also
Database::upsert()
Database::buildExcludedValue()
Stability: stable
to override
Parameters
string$tableTable name
array[]$rowsNon-empty list of rows to insert
string[]$identityKeyColumns of the (unique) identity key to UPSERT upon
string[]$setNon-empty map of (column name => SQL expression or literal)
string$fname
Since
1.35

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 1000 of file DatabaseMysqlBase.php.

References LIST_SET, Wikimedia\Rdbms\Database\makeList(), Wikimedia\Rdbms\Database\query(), and Wikimedia\Rdbms\Database\tableName().

◆ duplicateTableStructure()

Wikimedia\Rdbms\DatabaseMysqlBase::duplicateTableStructure (   $oldName,
  $newName,
  $temporary = false,
  $fname = __METHOD__ 
)
Parameters
string$oldName
string$newName
bool$temporary
string$fname
Returns
bool

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 1090 of file DatabaseMysqlBase.php.

References Wikimedia\Rdbms\Database\addIdentifierQuotes(), and Wikimedia\Rdbms\Database\query().

◆ estimateRowCount()

Wikimedia\Rdbms\DatabaseMysqlBase::estimateRowCount (   $tables,
  $var = '*',
  $conds = '',
  $fname = __METHOD__,
  $options = [],
  $join_conds = [] 
)

Estimate rows in dataset Returns estimated count, based on EXPLAIN output Takes same arguments as Database::select()

Parameters
string | array$tables
string | array$var
string | array$conds
string$fname
string | array$options
array$join_conds
Returns
int|false

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 318 of file DatabaseMysqlBase.php.

References $res, and Wikimedia\Rdbms\Database\select().

◆ fetchSecondsSinceHeartbeat()

Wikimedia\Rdbms\DatabaseMysqlBase::fetchSecondsSinceHeartbeat ( )
protected
Returns
float|null Elapsed seconds since the newest beat or null if none was found
See also
https://www.percona.com/doc/percona-toolkit/2.1/pt-heartbeat.html

Definition at line 522 of file DatabaseMysqlBase.php.

References $res, LIST_AND, Wikimedia\Rdbms\Database\makeList(), and Wikimedia\Rdbms\Database\query().

Referenced by Wikimedia\Rdbms\DatabaseMysqlBase\getLagFromPtHeartbeat().

◆ fieldInfo()

Wikimedia\Rdbms\DatabaseMysqlBase::fieldInfo (   $table,
  $field 
)
Parameters
string$table
string$field
Returns
MySQLField|false

Implements Wikimedia\Rdbms\IMaintainableDatabase.

Definition at line 386 of file DatabaseMysqlBase.php.

References $res, Wikimedia\Rdbms\Database\query(), and Wikimedia\Rdbms\Database\tableName().

◆ getApproximateLagStatus()

Wikimedia\Rdbms\DatabaseMysqlBase::getApproximateLagStatus ( )
protected

Get a replica DB lag estimate for this server at the start of a transaction.

This is a no-op unless the server is known a priori to be a replica DB

Stability: stable
to override
Returns
array ('lag': seconds or false on error, 'since': UNIX timestamp of estimate)
Since
1.27

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 544 of file DatabaseMysqlBase.php.

References Wikimedia\Rdbms\Database\getServerName().

◆ getLagFromPtHeartbeat()

Wikimedia\Rdbms\DatabaseMysqlBase::getLagFromPtHeartbeat ( )
protected

◆ getLagFromSlaveStatus()

Wikimedia\Rdbms\DatabaseMysqlBase::getLagFromSlaveStatus ( )
protected
Returns
int|false Second of lag

Definition at line 461 of file DatabaseMysqlBase.php.

References $res, and Wikimedia\Rdbms\Database\query().

Referenced by Wikimedia\Rdbms\DatabaseMysqlBase\doGetLag().

◆ getMySqlServerVariant()

Wikimedia\Rdbms\DatabaseMysqlBase::getMySqlServerVariant ( )
protected
Returns
string[] (one of ("MariaDB","MySQL"), x.y.z version string)

Definition at line 849 of file DatabaseMysqlBase.php.

References Wikimedia\Rdbms\DatabaseMysqlBase\getServerVersion().

Referenced by Wikimedia\Rdbms\DatabaseMysqlBase\getSoftwareLink(), and Wikimedia\Rdbms\DatabaseMysqlBase\selectSQLText().

◆ getPrimaryPos()

Wikimedia\Rdbms\DatabaseMysqlBase::getPrimaryPos ( )

◆ getReplicaPos()

Wikimedia\Rdbms\DatabaseMysqlBase::getReplicaPos ( )

Get the position of the primary DB from SHOW SLAVE STATUS.

Returns
MySQLPrimaryPos|false

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 680 of file DatabaseMysqlBase.php.

References Wikimedia\Rdbms\DatabaseMysqlBase\getServerGTIDs(), Wikimedia\Rdbms\DatabaseMysqlBase\getServerRoleStatus(), and Wikimedia\Rdbms\DatabaseMysqlBase\useGTIDs().

Referenced by Wikimedia\Rdbms\DatabaseMysqlBase\primaryPosWait().

◆ getReplicationSafetyInfo()

Wikimedia\Rdbms\DatabaseMysqlBase::getReplicationSafetyInfo ( )
protected
Returns
stdClass Process cached row

Definition at line 289 of file DatabaseMysqlBase.php.

References Wikimedia\Rdbms\Database\selectRow().

Referenced by Wikimedia\Rdbms\DatabaseMysqlBase\isInsertSelectSafe().

◆ getServerGTIDs()

Wikimedia\Rdbms\DatabaseMysqlBase::getServerGTIDs (   $fname = __METHOD__)
protected
Parameters
string$fname
Returns
string[]

Definition at line 793 of file DatabaseMysqlBase.php.

References $res, and Wikimedia\Rdbms\Database\query().

Referenced by Wikimedia\Rdbms\DatabaseMysqlBase\getPrimaryPos(), and Wikimedia\Rdbms\DatabaseMysqlBase\getReplicaPos().

◆ getServerId()

Wikimedia\Rdbms\DatabaseMysqlBase::getServerId ( )
protected
Returns
string Value of server_id (32-bit integer, unique to the replication topology)
Exceptions
DBQueryError

Definition at line 756 of file DatabaseMysqlBase.php.

References $res, and Wikimedia\Rdbms\Database\query().

Referenced by Wikimedia\Rdbms\DatabaseMysqlBase\getPrimaryPos(), and Wikimedia\Rdbms\DatabaseMysqlBase\getTopologyBasedServerId().

◆ getServerRoleStatus()

Wikimedia\Rdbms\DatabaseMysqlBase::getServerRoleStatus (   $role,
  $fname = __METHOD__ 
)
protected
Parameters
string$roleOne of "MASTER"/"SLAVE"
string$fname
Returns
array<string,mixed>|null Latest available server status row; false on failure

Definition at line 817 of file DatabaseMysqlBase.php.

References $res, and Wikimedia\Rdbms\Database\query().

Referenced by Wikimedia\Rdbms\DatabaseMysqlBase\getPrimaryPos(), and Wikimedia\Rdbms\DatabaseMysqlBase\getReplicaPos().

◆ getServerUUID()

Wikimedia\Rdbms\DatabaseMysqlBase::getServerUUID ( )
protected
Returns
string|null Value of server_uuid (hyphenated 128-bit hex string, globally unique)
Exceptions
DBQueryError

Definition at line 774 of file DatabaseMysqlBase.php.

References $res, and Wikimedia\Rdbms\Database\query().

Referenced by Wikimedia\Rdbms\DatabaseMysqlBase\getPrimaryPos().

◆ getServerVersion()

Wikimedia\Rdbms\DatabaseMysqlBase::getServerVersion ( )

◆ getSoftwareLink()

Wikimedia\Rdbms\DatabaseMysqlBase::getSoftwareLink ( )
Returns
string

Implements Wikimedia\Rdbms\IDatabase.

Definition at line 837 of file DatabaseMysqlBase.php.

References Wikimedia\Rdbms\DatabaseMysqlBase\getMySqlServerVariant().

◆ getTopologyBasedServerId()

Wikimedia\Rdbms\DatabaseMysqlBase::getTopologyBasedServerId ( )

Get a non-recycled ID that uniquely identifies this server within the replication topology.A replication topology defines which servers can originate changes to a given dataset and how those changes propagate among database servers. It is assumed that the server only participates in the replication of a single relevant dataset.

Returns
string|null 32, 64, or 128 bit integer ID; null if not applicable or unknown
Exceptions
DBQueryError
Since
1.37

Returns
string|null 32 bit integer ID; null if not applicable or unknown

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 748 of file DatabaseMysqlBase.php.

References Wikimedia\Rdbms\DatabaseMysqlBase\getServerId().

◆ getType()

Wikimedia\Rdbms\DatabaseMysqlBase::getType ( )
Returns
string

Implements Wikimedia\Rdbms\IDatabase.

Definition at line 129 of file DatabaseMysqlBase.php.

◆ indexInfo()

Wikimedia\Rdbms\DatabaseMysqlBase::indexInfo (   $table,
  $index,
  $fname = __METHOD__ 
)

Get information about an index into an object Returns false if the index does not exist.

Parameters
string$table
string$index
string$fname
Returns
bool|array|null False or null on failure

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 409 of file DatabaseMysqlBase.php.

References $res, Wikimedia\Rdbms\Database\indexName(), Wikimedia\Rdbms\Database\query(), and Wikimedia\Rdbms\Database\tableName().

◆ isConnectionError()

Wikimedia\Rdbms\DatabaseMysqlBase::isConnectionError (   $errno)
protected

Do not use this method outside of Database/DBError classes.

Stability: stable
to override
Parameters
int | string$errno
Returns
bool Whether the given query error was a connection drop
Since
1.38

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 1059 of file DatabaseMysqlBase.php.

◆ isInsertSelectSafe()

Wikimedia\Rdbms\DatabaseMysqlBase::isInsertSelectSafe ( array  $insertOptions,
array  $selectOptions 
)
protected
Stability: stable
to override
Parameters
array$insertOptions
array$selectOptions
Returns
bool Whether an INSERT SELECT with these options will be replication safe
Since
1.31

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 263 of file DatabaseMysqlBase.php.

References Wikimedia\Rdbms\DatabaseMysqlBase\getReplicationSafetyInfo().

◆ isKnownStatementRollbackError()

Wikimedia\Rdbms\DatabaseMysqlBase::isKnownStatementRollbackError (   $errno)
protected
Stability: stable
to override
Parameters
int | string$errno
Returns
bool Whether it is known that the last query error only caused statement rollback
Note
This is for backwards compatibility for callers catching DBError exceptions in order to ignore problems like duplicate key errors or foreign key violations
Since
1.39

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 1073 of file DatabaseMysqlBase.php.

◆ isQueryTimeoutError()

Wikimedia\Rdbms\DatabaseMysqlBase::isQueryTimeoutError (   $errno)
protected

Checks whether the cause of the error is detected to be a timeout.

It returns false by default, and not all engines support detecting this yet. If this returns false, it will be treated as a generic query error.

Stability: stable
to override
Parameters
int | string$errnoError number
Returns
bool
Since
1.39

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 1066 of file DatabaseMysqlBase.php.

◆ isView()

Wikimedia\Rdbms\DatabaseMysqlBase::isView (   $name,
  $prefix = null 
)

Differentiates between a TABLE and a VIEW.

Parameters
string$nameName of the TABLE/VIEW to test
string | null$prefix
Returns
bool
Since
1.22

Definition at line 1180 of file DatabaseMysqlBase.php.

References Wikimedia\Rdbms\DatabaseMysqlBase\listViews().

◆ lastError()

◆ listTables()

Wikimedia\Rdbms\DatabaseMysqlBase::listTables (   $prefix = null,
  $fname = __METHOD__ 
)

List all tables on the database.

Parameters
string | null$prefixOnly show tables with this prefix, e.g. mw_
string$fnameCalling function name
Returns
array

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 1111 of file DatabaseMysqlBase.php.

References Wikimedia\Rdbms\Database\query().

◆ listViews()

Wikimedia\Rdbms\DatabaseMysqlBase::listViews (   $prefix = null,
  $fname = __METHOD__ 
)

Lists VIEWs in the database.

Parameters
string | null$prefixOnly show VIEWs with this prefix, eg. unit_test_, or $wgDBprefix. Default: null, would return all views.
string$fnameName of calling function
Returns
array
Since
1.22

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 1141 of file DatabaseMysqlBase.php.

References $res, Wikimedia\Rdbms\Database\getDBname(), and Wikimedia\Rdbms\Database\query().

Referenced by Wikimedia\Rdbms\DatabaseMysqlBase\isView().

◆ mysqlConnect()

Wikimedia\Rdbms\DatabaseMysqlBase::mysqlConnect (   $server,
  $user,
  $password,
  $db 
)
abstractprotected

Open a connection to a MySQL server.

Parameters
string | null$server
string | null$user
string | null$password
string | null$db
Returns
mixed|null Driver connection handle
Exceptions
DBConnectionError

Reimplemented in Wikimedia\Rdbms\DatabaseMysqli.

Referenced by Wikimedia\Rdbms\DatabaseMysqlBase\open().

◆ mysqlError()

Wikimedia\Rdbms\DatabaseMysqlBase::mysqlError (   $conn = null)
abstractprotected

Returns the text of the error message from previous MySQL operation.

Parameters
resource | null$connRaw connection
Returns
string

Reimplemented in Wikimedia\Rdbms\DatabaseMysqli.

Referenced by Wikimedia\Rdbms\DatabaseMysqlBase\lastError().

◆ mysqlRealEscapeString()

Wikimedia\Rdbms\DatabaseMysqlBase::mysqlRealEscapeString (   $s)
abstractprotected

Escape special characters in a string for use in an SQL statement.

Parameters
string$s
Returns
mixed

Reimplemented in Wikimedia\Rdbms\DatabaseMysqli.

Referenced by Wikimedia\Rdbms\DatabaseMysqlBase\strencode().

◆ namedLocksEnqueue()

Wikimedia\Rdbms\DatabaseMysqlBase::namedLocksEnqueue ( )

Check to see if a named lock used by lock() use blocking queues.

Returns
bool
Since
1.26
Stability: stable
to override

Stability: stable
to override

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 955 of file DatabaseMysqlBase.php.

◆ open()

Wikimedia\Rdbms\DatabaseMysqlBase::open (   $server,
  $user,
  $password,
  $db,
  $schema,
  $tablePrefix 
)
protected

Open a new connection to the database (closing any existing one)

Parameters
string | null$serverServer host/address and optional port {
See also
connectionParams}
Parameters
string | null$userUser name {
See also
connectionParams}
Parameters
string | null$passwordUser password {
See also
connectionParams}
Parameters
string | null$dbDatabase name
string | null$schemaDatabase schema name
string$tablePrefix
Exceptions
DBConnectionError

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 133 of file DatabaseMysqlBase.php.

References Wikimedia\Rdbms\Database\$password, Wikimedia\Rdbms\Database\$server, Wikimedia\Rdbms\Database\$user, Wikimedia\Rdbms\Database\addQuotes(), Wikimedia\Rdbms\Database\close(), Wikimedia\Rdbms\Database\executeQuery(), Wikimedia\Rdbms\Database\installErrorHandler(), Wikimedia\Rdbms\DatabaseMysqlBase\lastError(), Wikimedia\Rdbms\DatabaseMysqlBase\mysqlConnect(), Wikimedia\Rdbms\Database\newExceptionAfterConnectError(), Wikimedia\Rdbms\Database\reportQueryError(), and Wikimedia\Rdbms\Database\restoreErrorHandler().

◆ primaryPosWait()

Wikimedia\Rdbms\DatabaseMysqlBase::primaryPosWait ( DBPrimaryPos  $pos,
  $timeout 
)

Wait for the replica server to catch up to a given primary server position.Note that this does not start any new transactions.Callers might want to flush any existing transaction before invoking this method. Upon success, this assures that replica server queries will reflect all changes up to the given position, without interference from prior REPEATABLE-READ snapshots.

Parameters
DBPrimaryPos$pos
int$timeoutThe maximum number of seconds to wait for synchronisation
Returns
int|null Zero if the replica DB server was past that position already, greater than zero if we waited for some period of time, less than zero if it timed out, and null on error
Exceptions
DBErrorIf an error occurs, {
See also
query}
Since
1.37
Since
1.37
Stability: stable
to override

Since
1.37
Stability: stable
to override

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 562 of file DatabaseMysqlBase.php.

References $res, Wikimedia\Rdbms\DBPrimaryPos\__toString(), Wikimedia\Rdbms\Database\addQuotes(), Wikimedia\Rdbms\Database\getLogContext(), Wikimedia\Rdbms\DatabaseMysqlBase\getReplicaPos(), and Wikimedia\Rdbms\Database\query().

◆ selectSQLText()

Wikimedia\Rdbms\DatabaseMysqlBase::selectSQLText (   $table,
  $vars,
  $conds = '',
  $fname = __METHOD__,
  $options = [],
  $join_conds = [] 
)

Take the same arguments as IDatabase::select() and return the SQL it would use.

This can be useful for making UNION queries, where the SQL text of each query is needed. In general, however, callers outside of Database classes should just use select().

See also
IDatabase::select()
Parameters
string | array$tableTable name(s)
string | array$varsField names
string | array$condsConditions
string$fnameCaller function name
string | array$optionsQuery options
string | array$join_condsJoin conditions
Returns
string SQL query string

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 1184 of file DatabaseMysqlBase.php.

References Wikimedia\Rdbms\DatabaseMysqlBase\getMySqlServerVariant().

◆ serverIsReadOnly()

Wikimedia\Rdbms\DatabaseMysqlBase::serverIsReadOnly ( )

Returns
bool Whether the DB server is marked as read-only server-side
Exceptions
DBErrorIf an error occurs, {
See also
query}
Since
1.28
Stability: stable
to override

Stability: stable
to override

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 825 of file DatabaseMysqlBase.php.

References $res, and Wikimedia\Rdbms\Database\query().

◆ setBigSelects()

Wikimedia\Rdbms\DatabaseMysqlBase::setBigSelects (   $value = true)

◆ setSessionOptions()

Wikimedia\Rdbms\DatabaseMysqlBase::setSessionOptions ( array  $options)
Parameters
array$options

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 890 of file DatabaseMysqlBase.php.

References Wikimedia\Rdbms\Database\query().

◆ streamStatementEnd()

Wikimedia\Rdbms\DatabaseMysqlBase::streamStatementEnd ( $sql,
$newLine 
)
Parameters
string&$sql
string&$newLine
Returns
bool

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 913 of file DatabaseMysqlBase.php.

◆ strencode()

Wikimedia\Rdbms\DatabaseMysqlBase::strencode (   $s)
Parameters
string$s
Returns
string

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 438 of file DatabaseMysqlBase.php.

References $s, and Wikimedia\Rdbms\DatabaseMysqlBase\mysqlRealEscapeString().

◆ tableExists()

Wikimedia\Rdbms\DatabaseMysqlBase::tableExists (   $table,
  $fname = __METHOD__ 
)

Query whether a given table exists.

Parameters
string$table
string$fname
Returns
bool
Exceptions
DBErrorIf an error occurs, {
See also
query}

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 349 of file DatabaseMysqlBase.php.

References $res, and Wikimedia\Rdbms\Database\query().

◆ useGTIDs()

Wikimedia\Rdbms\DatabaseMysqlBase::useGTIDs ( )
protected

◆ wasDeadlock()

Wikimedia\Rdbms\DatabaseMysqlBase::wasDeadlock ( )

Determines if the last failure was due to a deadlock.

Returns
bool

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 1036 of file DatabaseMysqlBase.php.

References Wikimedia\Rdbms\IDatabase\lastErrno().

◆ wasLockTimeout()

Wikimedia\Rdbms\DatabaseMysqlBase::wasLockTimeout ( )

Determines if the last failure was due to a lock timeout.

Returns
bool

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 1045 of file DatabaseMysqlBase.php.

References Wikimedia\Rdbms\IDatabase\lastErrno().

◆ wasReadOnlyError()

Wikimedia\Rdbms\DatabaseMysqlBase::wasReadOnlyError ( )

Determines if the last failure was due to the database being read-only.

Returns
bool

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 1054 of file DatabaseMysqlBase.php.

References Wikimedia\Rdbms\IDatabase\lastErrno(), and Wikimedia\Rdbms\DatabaseMysqlBase\lastError().

Member Data Documentation

◆ $defaultBigSelects

bool null Wikimedia\Rdbms\DatabaseMysqlBase::$defaultBigSelects
protected

◆ $lagDetectionMethod

string Wikimedia\Rdbms\DatabaseMysqlBase::$lagDetectionMethod
protected

Method to detect replica DB lag.

Definition at line 46 of file DatabaseMysqlBase.php.

◆ $lagDetectionOptions

array Wikimedia\Rdbms\DatabaseMysqlBase::$lagDetectionOptions = []
protected

Method to detect replica DB lag.

Definition at line 48 of file DatabaseMysqlBase.php.

◆ $lastKnownReplicaPos

MySQLPrimaryPos Wikimedia\Rdbms\DatabaseMysqlBase::$lastKnownReplicaPos
protected

Definition at line 44 of file DatabaseMysqlBase.php.

◆ $platform

ISQLPlatform Wikimedia\Rdbms\DatabaseMysqlBase::$platform
protected
Initial value:
=
private const LAG_STALE_WARN_THRESHOLD 0.100

Definition at line 82 of file DatabaseMysqlBase.php.

◆ $sslCAFile

string null Wikimedia\Rdbms\DatabaseMysqlBase::$sslCAFile
protected

Definition at line 56 of file DatabaseMysqlBase.php.

◆ $sslCAPath

string null Wikimedia\Rdbms\DatabaseMysqlBase::$sslCAPath
protected

Definition at line 58 of file DatabaseMysqlBase.php.

◆ $sslCertPath

string null Wikimedia\Rdbms\DatabaseMysqlBase::$sslCertPath
protected

Definition at line 54 of file DatabaseMysqlBase.php.

◆ $sslCiphers

string null Wikimedia\Rdbms\DatabaseMysqlBase::$sslCiphers
protected

Open SSL cipher list string.

See also
https://www.openssl.org/docs/man1.0.2/man1/ciphers.html

Definition at line 64 of file DatabaseMysqlBase.php.

◆ $sslKeyPath

string null Wikimedia\Rdbms\DatabaseMysqlBase::$sslKeyPath
protected

Definition at line 52 of file DatabaseMysqlBase.php.

◆ $useGTIDs

bool Wikimedia\Rdbms\DatabaseMysqlBase::$useGTIDs = false
protected

bool Whether to use GTID methods

Definition at line 50 of file DatabaseMysqlBase.php.

Referenced by Wikimedia\Rdbms\DatabaseMysqlBase\useGTIDs().

◆ $utf8Mode

bool Wikimedia\Rdbms\DatabaseMysqlBase::$utf8Mode
protected

Use experimental UTF-8 transmission encoding.

Definition at line 66 of file DatabaseMysqlBase.php.


The documentation for this class was generated from the following file: