* @see Database
*/
class DatabaseMysql extends DatabaseBase {
+
+ /**
+ * @return string
+ */
function getType() {
return 'mysql';
}
- /*private*/ function doQuery( $sql ) {
+ protected function doQuery( $sql ) {
if( $this->bufferResults() ) {
$ret = mysql_query( $sql, $this->mConn );
} else {
wfProfileOut("dbconnect-$server");
if ( $dbName != '' && $this->mConn !== false ) {
- $success = @/**/mysql_select_db( $dbName, $this->mConn );
+ wfSuppressWarnings();
+ $success = mysql_select_db( $dbName, $this->mConn );
+ wfRestoreWarnings();
if ( !$success ) {
$error = "Error selecting database $dbName on server {$this->mServer} " .
"from client host " . wfHostname() . "\n";
return $success;
}
+ /**
+ * @return bool
+ */
function close() {
$this->mOpened = false;
if ( $this->mConn ) {
if ( $res instanceof ResultWrapper ) {
$res = $res->result;
}
- if ( !@/**/mysql_free_result( $res ) ) {
+ wfSuppressWarnings();
+ $ok = mysql_free_result( $res );
+ wfRestoreWarnings();
+ if ( !$ok ) {
throw new DBUnexpectedError( $this, "Unable to free MySQL result" );
}
}
if ( $res instanceof ResultWrapper ) {
$res = $res->result;
}
- @/**/$row = mysql_fetch_object( $res );
+ wfSuppressWarnings();
+ $row = mysql_fetch_object( $res );
+ wfRestoreWarnings();
if( $this->lastErrno() ) {
throw new DBUnexpectedError( $this, 'Error in fetchObject(): ' . htmlspecialchars( $this->lastError() ) );
}
return $row;
}
- function fetchRow( $res ) {
+ function fetchRow( $res ) {
if ( $res instanceof ResultWrapper ) {
$res = $res->result;
}
- @/**/$row = mysql_fetch_array( $res );
+ wfSuppressWarnings();
+ $row = mysql_fetch_array( $res );
+ wfRestoreWarnings();
if ( $this->lastErrno() ) {
throw new DBUnexpectedError( $this, 'Error in fetchRow(): ' . htmlspecialchars( $this->lastError() ) );
}
return $row;
}
+ /**
+ * @throws DBUnexpectedError
+ * @param $res
+ * @return int
+ */
function numRows( $res ) {
if ( $res instanceof ResultWrapper ) {
$res = $res->result;
}
- @/**/$n = mysql_num_rows( $res );
+ wfSuppressWarnings();
+ $n = mysql_num_rows( $res );
+ wfRestoreWarnings();
if( $this->lastErrno() ) {
throw new DBUnexpectedError( $this, 'Error in numRows(): ' . htmlspecialchars( $this->lastError() ) );
}
return $n;
}
+ /**
+ * @param $res
+ * @return int
+ */
function numFields( $res ) {
if ( $res instanceof ResultWrapper ) {
$res = $res->result;
return mysql_num_fields( $res );
}
+ /**
+ * @param $res
+ * @param $n
+ * @return string
+ */
function fieldName( $res, $n ) {
if ( $res instanceof ResultWrapper ) {
$res = $res->result;
return mysql_field_name( $res, $n );
}
- function insertId() { return mysql_insert_id( $this->mConn ); }
+ /**
+ * @return int
+ */
+ function insertId() {
+ return mysql_insert_id( $this->mConn );
+ }
function dataSeek( $res, $row ) {
if ( $res instanceof ResultWrapper ) {
return $error;
}
- function affectedRows() { return mysql_affected_rows( $this->mConn ); }
+ /**
+ * @return int
+ */
+ function affectedRows() {
+ return mysql_affected_rows( $this->mConn );
+ }
+
+ function replace( $table, $uniqueIndexes, $rows, $fname = 'DatabaseMysql::replace' ) {
+ return $this->nativeReplace( $table, $rows, $fname );
+ }
/**
* Estimate rows in dataset
* Returns estimated count, based on EXPLAIN output
* Takes same arguments as Database::select()
+ *
+ * @return int
*/
public function estimateRowCount( $table, $vars='*', $conds='', $fname = 'DatabaseMysql::estimateRowCount', $options = array() ) {
$options['EXPLAIN'] = true;
return $rows;
}
+ /**
+ * @param $table string
+ * @param $field string
+ * @return bool|MySQLField
+ */
function fieldInfo( $table, $field ) {
$table = $this->tableName( $table );
$res = $this->query( "SELECT * FROM $table LIMIT 1", __METHOD__, true );
/**
* Get information about an index into an object
* Returns false if the index does not exist
+ *
+ * @return false|array
*/
function indexInfo( $table, $index, $fname = 'DatabaseMysql::indexInfo' ) {
# SHOW INDEX works in MySQL 3.23.58, but SHOW INDEXES does not.
return empty( $result ) ? false : $result;
}
+ /**
+ * @param $db
+ * @return bool
+ */
function selectDB( $db ) {
$this->mDBname = $db;
return mysql_select_db( $db, $this->mConn );
}
+ /**
+ * @param $s string
+ *
+ * @return string
+ */
function strencode( $s ) {
$sQuoted = mysql_real_escape_string( $s, $this->mConn );
/**
* MySQL uses `backticks` for identifier quoting instead of the sql standard "double quotes".
+ *
+ * @param $s string
+ *
+ * @return string
*/
public function addIdentifierQuotes( $s ) {
return "`" . $this->strencode( $s ) . "`";
}
+ /**
+ * @param $name string
+ * @return bool
+ */
+ public function isQuotedIdentifier( $name ) {
+ return strlen( $name ) && $name[0] == '`' && substr( $name, -1, 1 ) == '`';
+ }
+
+ /**
+ * @return bool
+ */
function ping() {
$ping = mysql_ping( $this->mConn );
if ( $ping ) {
/**
* Returns slave lag.
- * At the moment, this will only work if the DB user has the PROCESS privilege
- * @result int
+ *
+ * On MySQL 4.1.9 and later, this will do a SHOW SLAVE STATUS. On earlier
+ * versions of MySQL, it uses SHOW PROCESSLIST, which requires the PROCESS
+ * privilege.
+ *
+ * @return int
*/
function getLag() {
if ( !is_null( $this->mFakeSlaveLag ) ) {
wfDebug( "getLag: fake slave lagged {$this->mFakeSlaveLag} seconds\n" );
return $this->mFakeSlaveLag;
}
+
+ if ( version_compare( $this->getServerVersion(), '4.1.9', '>=' ) ) {
+ return $this->getLagFromSlaveStatus();
+ } else {
+ return $this->getLagFromProcesslist();
+ }
+ }
+
+ /**
+ * @return bool|int
+ */
+ function getLagFromSlaveStatus() {
+ $res = $this->query( 'SHOW SLAVE STATUS', __METHOD__ );
+ if ( !$res ) {
+ return false;
+ }
+ $row = $res->fetchObject();
+ if ( !$row ) {
+ return false;
+ }
+ if ( strval( $row->Seconds_Behind_Master ) === '' ) {
+ return false;
+ } else {
+ return intval( $row->Seconds_Behind_Master );
+ }
+ }
+
+ /**
+ * @return bool|int
+ */
+ function getLagFromProcesslist() {
$res = $this->query( 'SHOW PROCESSLIST', __METHOD__ );
if( !$res ) {
return false;
return false;
}
+ /**
+ * Wait for the slave to catch up to a given master position.
+ *
+ * @param $pos DBMasterPos object
+ * @param $timeout Integer: the maximum number of seconds to wait for synchronisation
+ */
+ function masterPosWait( DBMasterPos $pos, $timeout ) {
+ $fname = 'DatabaseBase::masterPosWait';
+ wfProfileIn( $fname );
+
+ # Commit any open transactions
+ if ( $this->mTrxLevel ) {
+ $this->commit();
+ }
+
+ if ( !is_null( $this->mFakeSlaveLag ) ) {
+ $status = parent::masterPosWait( $pos, $timeout );
+ wfProfileOut( $fname );
+ return $status;
+ }
+
+ # Call doQuery() directly, to avoid opening a transaction if DBO_TRX is set
+ $encFile = $this->addQuotes( $pos->file );
+ $encPos = intval( $pos->pos );
+ $sql = "SELECT MASTER_POS_WAIT($encFile, $encPos, $timeout)";
+ $res = $this->doQuery( $sql );
+
+ if ( $res && $row = $this->fetchRow( $res ) ) {
+ wfProfileOut( $fname );
+ return $row[0];
+ } else {
+ wfProfileOut( $fname );
+ return false;
+ }
+ }
+
+ /**
+ * Get the position of the master from SHOW SLAVE STATUS
+ *
+ * @return MySQLMasterPos|false
+ */
+ function getSlavePos() {
+ if ( !is_null( $this->mFakeSlaveLag ) ) {
+ return parent::getSlavePos();
+ }
+
+ $res = $this->query( 'SHOW SLAVE STATUS', 'DatabaseBase::getSlavePos' );
+ $row = $this->fetchObject( $res );
+
+ if ( $row ) {
+ $pos = isset( $row->Exec_master_log_pos ) ? $row->Exec_master_log_pos : $row->Exec_Master_Log_Pos;
+ return new MySQLMasterPos( $row->Relay_Master_Log_File, $pos );
+ } else {
+ return false;
+ }
+ }
+
+ /**
+ * Get the position of the master from SHOW MASTER STATUS
+ *
+ * @return MySQLMasterPos|false
+ */
+ function getMasterPos() {
+ if ( $this->mFakeMaster ) {
+ return parent::getMasterPos();
+ }
+
+ $res = $this->query( 'SHOW MASTER STATUS', 'DatabaseBase::getMasterPos' );
+ $row = $this->fetchObject( $res );
+
+ if ( $row ) {
+ return new MySQLMasterPos( $row->File, $row->Position );
+ } else {
+ return false;
+ }
+ }
+
+ /**
+ * @return string
+ */
function getServerVersion() {
return mysql_get_server_info( $this->mConn );
}
+ /**
+ * @param $index
+ * @return string
+ */
function useIndexClause( $index ) {
return "FORCE INDEX (" . $this->indexName( $index ) . ")";
}
+ /**
+ * @return string
+ */
function lowPriorityOption() {
return 'LOW_PRIORITY';
}
+ /**
+ * @return string
+ */
public static function getSoftwareLink() {
return '[http://www.mysql.com/ MySQL]';
}
$this->query( "SET sql_big_selects=$encValue", __METHOD__ );
}
- public function unixTimestamp( $field ) {
- return "UNIX_TIMESTAMP($field)";
+ /**
+ * DELETE where the condition is a join. MySql uses multi-table deletes.
+ */
+ function deleteJoin( $delTable, $joinTable, $delVar, $joinVar, $conds, $fname = 'DatabaseBase::deleteJoin' ) {
+ if ( !$conds ) {
+ throw new DBUnexpectedError( $this, 'DatabaseBase::deleteJoin() called with empty $conds' );
+ }
+
+ $delTable = $this->tableName( $delTable );
+ $joinTable = $this->tableName( $joinTable );
+ $sql = "DELETE $delTable FROM $delTable, $joinTable WHERE $delVar=$joinVar ";
+
+ if ( $conds != '*' ) {
+ $sql .= ' AND ' . $this->makeList( $conds, LIST_AND );
+ }
+
+ return $this->query( $sql, $fname );
}
/**
* Determines if the last failure was due to a deadlock
+ *
+ * @return bool
*/
function wasDeadlock() {
return $this->lastErrno() == 1213;
/**
* Determines if the last query error was something that should be dealt
* with by pinging the connection and reissuing the query
+ *
+ * @return bool
*/
function wasErrorReissuable() {
return $this->lastErrno() == 2013 || $this->lastErrno() == 2006;
/**
* Determines if the last failure was due to the database being read-only.
+ *
+ * @return bool
*/
function wasReadOnlyError() {
return $this->lastErrno() == 1223 ||
# Note that we don't bother changing around the prefixes here be-
# cause we know we're using MySQL anyway.
- $res = $this->query( "SHOW CREATE TABLE $oldName" );
+ $res = $this->query( 'SHOW CREATE TABLE ' . $this->addIdentifierQuotes( $oldName ) );
$row = $this->fetchRow( $res );
$oldQuery = $row[1];
$query = preg_replace( '/CREATE TABLE `(.*?)`/',
- "CREATE $tmp TABLE `$newName`", $oldQuery );
+ "CREATE $tmp TABLE " . $this->addIdentifierQuotes( $newName ), $oldQuery );
if ($oldQuery === $query) {
# Couldn't do replacement
throw new MWException( "could not create temporary table $newName" );
}
} else {
+ $newName = $this->addIdentifierQuotes( $newName );
+ $oldName = $this->addIdentifierQuotes( $oldName );
$query = "CREATE $tmp TABLE $newName (LIKE $oldName)";
}
$this->query( $query, $fname );
}
-
+
/**
* List all tables on the database
*
*/
function listTables( $prefix = null, $fname = 'DatabaseMysql::listTables' ) {
$result = $this->query( "SHOW TABLES", $fname);
-
+
$endArray = array();
-
- foreach( $result as $table ) {
+
+ foreach( $result as $table ) {
$vars = get_object_vars($table);
$table = array_pop( $vars );
-
- if( empty( $prefix ) || strpos( $table, $prefix ) === 0 ) {
+
+ if( !$prefix || strpos( $table, $prefix ) === 0 ) {
$endArray[] = $table;
}
}
-
+
return $endArray;
}
+ /**
+ * @param $tableName
+ * @param $fName string
+ * @return bool|ResultWrapper
+ */
public function dropTable( $tableName, $fName = 'DatabaseMysql::dropTable' ) {
- if( !$this->tableExists( $tableName ) ) {
+ if( !$this->tableExists( $tableName, $fName ) ) {
return false;
}
return $this->query( "DROP TABLE IF EXISTS " . $this->tableName( $tableName ), $fName );
}
+ /**
+ * @return array
+ */
+ protected function getDefaultSchemaVars() {
+ $vars = parent::getDefaultSchemaVars();
+ $vars['wgDBTableOptions'] = str_replace( 'TYPE', 'ENGINE', $GLOBALS['wgDBTableOptions'] );
+ $vars['wgDBTableOptions'] = str_replace( 'CHARSET=mysql4', 'CHARSET=binary', $GLOBALS['wgDBTableOptions'] );
+ return $vars;
+ }
+
+ /**
+ * Get status information from SHOW STATUS in an associative array
+ *
+ * @return array
+ */
+ function getMysqlStatus( $which = "%" ) {
+ $res = $this->query( "SHOW STATUS LIKE '{$which}'" );
+ $status = array();
+
+ foreach ( $res as $row ) {
+ $status[$row->Variable_name] = $row->Value;
+ }
+
+ return $status;
+ }
+
}
/**
* Legacy support: Database == DatabaseMysql
+ *
+ * @deprecated in 1.16
*/
class Database extends DatabaseMysql {}
$this->type = $info->type;
}
+ /**
+ * @return string
+ */
function name() {
return $this->name;
}
+ /**
+ * @return string
+ */
function tableName() {
return $this->tableName;
}
return $this->type;
}
+ /**
+ * @return bool
+ */
function isNullable() {
return $this->nullable;
}
return $this->default;
}
+ /**
+ * @return bool
+ */
function isKey() {
return $this->is_key;
}
+ /**
+ * @return bool
+ */
function isMultipleKey() {
return $this->is_multiple;
}
}
-class MySQLMasterPos {
+class MySQLMasterPos implements DBMasterPos {
var $file, $pos;
function __construct( $file, $pos ) {
dépôts / lhc / web / wiklou.git / blobdiff