remove nonfree Database support

4 files changed, 0 insertions, 1512 deletions

diff --git a/includes/installer/MssqlInstaller.php b/includes/installer/MssqlInstaller.php
deleted file mode 100644
index 4d79d966..00000000
--- a/includes/installer/MssqlInstaller.php
+++ /dev/null
@@ -1,736 +0,0 @@
-<?php
-/**
- * Microsoft SQL Server-specific installer.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- * http://www.gnu.org/copyleft/gpl.html
- *
- * @file
- * @ingroup Deployment
- */
-
-/**
- * Class for setting up the MediaWiki database using Microsoft SQL Server.
- *
- * @ingroup Deployment
- * @since 1.23
- */
-class MssqlInstaller extends DatabaseInstaller {
-
-	protected $globalNames = array(
-		'wgDBserver',
-		'wgDBname',
-		'wgDBuser',
-		'wgDBpassword',
-		'wgDBmwschema',
-		'wgDBprefix',
-		'wgDBWindowsAuthentication',
-	);
-
-	protected $internalDefaults = array(
-		'_InstallUser' => 'sa',
-		'_InstallWindowsAuthentication' => 'sqlauth',
-		'_WebWindowsAuthentication' => 'sqlauth',
-	);
-
-	// SQL Server 2005 RTM
-	// @todo Are SQL Express version numbers different?)
-	public $minimumVersion = '9.00.1399';
-
-	// These are schema-level privs
-	// Note: the web user will be created will full permissions if possible, this permission
-	// list is only used if we are unable to grant full permissions.
-	public $webUserPrivs = array(
-		'DELETE',
-		'INSERT',
-		'SELECT',
-		'UPDATE',
-		'EXECUTE',
-	);
-
-	/**
-	 * @return string
-	 */
-	public function getName() {
-		return 'mssql';
-	}
-
-	/**
-	 * @return bool
-	 */
-	public function isCompiled() {
-		return self::checkExtension( 'sqlsrv' );
-	}
-
-	/**
-	 * @return string
-	 */
-	public function getConnectForm() {
-		if ( $this->getVar( '_InstallWindowsAuthentication' ) == 'windowsauth' ) {
-			$displayStyle = 'display: none;';
-		} else {
-			$displayStyle = 'display: block;';
-		}
-
-		return $this->getTextBox(
-			'wgDBserver',
-			'config-db-host',
-			array(),
-			$this->parent->getHelpBox( 'config-db-host-help' )
-		) .
-			Html::openElement( 'fieldset' ) .
-			Html::element( 'legend', array(), wfMessage( 'config-db-wiki-settings' )->text() ) .
-			$this->getTextBox( 'wgDBname', 'config-db-name', array( 'dir' => 'ltr' ),
-				$this->parent->getHelpBox( 'config-db-name-help' ) ) .
-			$this->getTextBox( 'wgDBmwschema', 'config-db-schema', array( 'dir' => 'ltr' ),
-				$this->parent->getHelpBox( 'config-db-schema-help' ) ) .
-			$this->getTextBox( 'wgDBprefix', 'config-db-prefix', array( 'dir' => 'ltr' ),
-				$this->parent->getHelpBox( 'config-db-prefix-help' ) ) .
-			Html::closeElement( 'fieldset' ) .
-			Html::openElement( 'fieldset' ) .
-			Html::element( 'legend', array(), wfMessage( 'config-db-install-account' )->text() ) .
-			$this->getRadioSet( array(
-				'var' => '_InstallWindowsAuthentication',
-				'label' => 'config-mssql-auth',
-				'itemLabelPrefix' => 'config-mssql-',
-				'values' => array( 'sqlauth', 'windowsauth' ),
-				'itemAttribs' => array(
-					'sqlauth' => array(
-						'class' => 'showHideRadio',
-						'rel' => 'dbCredentialBox',
-					),
-					'windowsauth' => array(
-						'class' => 'hideShowRadio',
-						'rel' => 'dbCredentialBox',
-					)
-				),
-				'help' => $this->parent->getHelpBox( 'config-mssql-install-auth' )
-			) ) .
-			Html::openElement( 'div', array( 'id' => 'dbCredentialBox', 'style' => $displayStyle ) ) .
-			$this->getTextBox(
-				'_InstallUser',
-				'config-db-username',
-				array( 'dir' => 'ltr' ),
-				$this->parent->getHelpBox( 'config-db-install-username' )
-			) .
-			$this->getPasswordBox(
-				'_InstallPassword',
-				'config-db-password',
-				array( 'dir' => 'ltr' ),
-				$this->parent->getHelpBox( 'config-db-install-password' )
-			) .
-			Html::closeElement( 'div' ) .
-			Html::closeElement( 'fieldset' );
-	}
-
-	public function submitConnectForm() {
-		// Get variables from the request.
-		$newValues = $this->setVarsFromRequest( array(
-			'wgDBserver',
-			'wgDBname',
-			'wgDBmwschema',
-			'wgDBprefix'
-		) );
-
-		// Validate them.
-		$status = Status::newGood();
-		if ( !strlen( $newValues['wgDBserver'] ) ) {
-			$status->fatal( 'config-missing-db-host' );
-		}
-		if ( !strlen( $newValues['wgDBname'] ) ) {
-			$status->fatal( 'config-missing-db-name' );
-		} elseif ( !preg_match( '/^[a-z0-9_]+$/i', $newValues['wgDBname'] ) ) {
-			$status->fatal( 'config-invalid-db-name', $newValues['wgDBname'] );
-		}
-		if ( !preg_match( '/^[a-z0-9_]*$/i', $newValues['wgDBmwschema'] ) ) {
-			$status->fatal( 'config-invalid-schema', $newValues['wgDBmwschema'] );
-		}
-		if ( !preg_match( '/^[a-z0-9_]*$/i', $newValues['wgDBprefix'] ) ) {
-			$status->fatal( 'config-invalid-db-prefix', $newValues['wgDBprefix'] );
-		}
-		if ( !$status->isOK() ) {
-			return $status;
-		}
-
-		// Check for blank schema and remap to dbo
-		if ( $newValues['wgDBmwschema'] === '' ) {
-			$this->setVar( 'wgDBmwschema', 'dbo' );
-		}
-
-		// User box
-		$this->setVarsFromRequest( array(
-			'_InstallUser',
-			'_InstallPassword',
-			'_InstallWindowsAuthentication'
-		) );
-
-		// Try to connect
-		$status = $this->getConnection();
-		if ( !$status->isOK() ) {
-			return $status;
-		}
-		/**
-		 * @var $conn DatabaseBase
-		 */
-		$conn = $status->value;
-
-		// Check version
-		$version = $conn->getServerVersion();
-		if ( version_compare( $version, $this->minimumVersion ) < 0 ) {
-			return Status::newFatal( 'config-mssql-old', $this->minimumVersion, $version );
-		}
-
-		return $status;
-	}
-
-	/**
-	 * @return Status
-	 */
-	public function openConnection() {
-		global $wgDBWindowsAuthentication;
-		$status = Status::newGood();
-		$user = $this->getVar( '_InstallUser' );
-		$password = $this->getVar( '_InstallPassword' );
-
-		if ( $this->getVar( '_InstallWindowsAuthentication' ) == 'windowsauth' ) {
-			// Use Windows authentication for this connection
-			$wgDBWindowsAuthentication = true;
-		} else {
-			$wgDBWindowsAuthentication = false;
-		}
-
-		try {
-			$db = DatabaseBase::factory( 'mssql', array(
-				'host' => $this->getVar( 'wgDBserver' ),
-				'user' => $user,
-				'password' => $password,
-				'dbname' => false,
-				'flags' => 0,
-				'schema' => $this->getVar( 'wgDBmwschema' ),
-				'tablePrefix' => $this->getVar( 'wgDBprefix' ) ) );
-			$db->prepareStatements( false );
-			$db->scrollableCursor( false );
-			$status->value = $db;
-		} catch ( DBConnectionError $e ) {
-			$status->fatal( 'config-connection-error', $e->getMessage() );
-		}
-
-		return $status;
-	}
-
-	public function preUpgrade() {
-		global $wgDBuser, $wgDBpassword;
-
-		$status = $this->getConnection();
-		if ( !$status->isOK() ) {
-			$this->parent->showStatusError( $status );
-
-			return;
-		}
-		/**
-		 * @var $conn DatabaseBase
-		 */
-		$conn = $status->value;
-		$conn->selectDB( $this->getVar( 'wgDBname' ) );
-
-		# Normal user and password are selected after this step, so for now
-		# just copy these two
-		$wgDBuser = $this->getVar( '_InstallUser' );
-		$wgDBpassword = $this->getVar( '_InstallPassword' );
-	}
-
-	/**
-	 * Return true if the install user can create accounts
-	 *
-	 * @return bool
-	 */
-	public function canCreateAccounts() {
-		$status = $this->getConnection();
-		if ( !$status->isOK() ) {
-			return false;
-		}
-		/** @var $conn DatabaseBase */
-		$conn = $status->value;
-
-		// We need the server-level ALTER ANY LOGIN permission to create new accounts
-		$res = $conn->query( "SELECT permission_name FROM sys.fn_my_permissions( NULL, 'SERVER' )" );
-		$serverPrivs = array(
-			'ALTER ANY LOGIN' => false,
-			'CONTROL SERVER' => false,
-		);
-
-		foreach ( $res as $row ) {
-			$serverPrivs[$row->permission_name] = true;
-		}
-
-		if ( !$serverPrivs['ALTER ANY LOGIN'] ) {
-			return false;
-		}
-
-		// Check to ensure we can grant everything needed as well
-		// We can't actually tell if we have WITH GRANT OPTION for a given permission, so we assume we do
-		// and just check for the permission
-		// http://technet.microsoft.com/en-us/library/ms178569.aspx
-		// The following array sets up which permissions imply whatever permissions we specify
-		$implied = array(
-			// schema           database  server
-			'DELETE'  => array( 'DELETE', 'CONTROL SERVER' ),
-			'EXECUTE' => array( 'EXECUTE', 'CONTROL SERVER' ),
-			'INSERT'  => array( 'INSERT', 'CONTROL SERVER' ),
-			'SELECT'  => array( 'SELECT', 'CONTROL SERVER' ),
-			'UPDATE'  => array( 'UPDATE', 'CONTROL SERVER' ),
-		);
-
-		$grantOptions = array_flip( $this->webUserPrivs );
-
-		// Check for schema and db-level permissions, but only if the schema/db exists
-		$schemaPrivs = $dbPrivs = array(
-			'DELETE' => false,
-			'EXECUTE' => false,
-			'INSERT' => false,
-			'SELECT' => false,
-			'UPDATE' => false,
-		);
-
-		$dbPrivs['ALTER ANY USER'] = false;
-
-		if ( $this->databaseExists( $this->getVar( 'wgDBname' ) ) ) {
-			$conn->selectDB( $this->getVar( 'wgDBname' ) );
-			$res = $conn->query( "SELECT permission_name FROM sys.fn_my_permissions( NULL, 'DATABASE' )" );
-
-			foreach ( $res as $row ) {
-				$dbPrivs[$row->permission_name] = true;
-			}
-
-			// If the db exists, we need ALTER ANY USER privs on it to make a new user
-			if ( !$dbPrivs['ALTER ANY USER'] ) {
-				return false;
-			}
-
-			if ( $this->schemaExists( $this->getVar( 'wgDBmwschema' ) ) ) {
-				// wgDBmwschema is validated to only contain alphanumeric + underscore, so this is safe
-				$res = $conn->query( "SELECT permission_name FROM sys.fn_my_permissions( "
-					. "'{$this->getVar( 'wgDBmwschema' )}', 'SCHEMA' )" );
-
-				foreach ( $res as $row ) {
-					$schemaPrivs[$row->permission_name] = true;
-				}
-			}
-		}
-
-		// Now check all the grants we'll need to be doing to see if we can
-		foreach ( $this->webUserPrivs as $permission ) {
-			if ( ( isset( $schemaPrivs[$permission] ) && $schemaPrivs[$permission] )
-					|| ( isset( $dbPrivs[$implied[$permission][0]] )
-						&& $dbPrivs[$implied[$permission][0]] )
-					|| ( isset( $serverPrivs[$implied[$permission][1]] )
-						&& $serverPrivs[$implied[$permission][1]] )
-			) {
-				unset( $grantOptions[$permission] );
-			}
-		}
-
-		if ( count( $grantOptions ) ) {
-			// Can't grant everything
-			return false;
-		}
-
-		return true;
-	}
-
-	/**
-	 * @return string
-	 */
-	public function getSettingsForm() {
-		if ( $this->canCreateAccounts() ) {
-			$noCreateMsg = false;
-		} else {
-			$noCreateMsg = 'config-db-web-no-create-privs';
-		}
-
-		$wrapperStyle = $this->getVar( '_SameAccount' ) ? 'display: none' : '';
-		$displayStyle = $this->getVar( '_WebWindowsAuthentication' ) == 'windowsauth'
-			? 'display: none'
-			: '';
-		$s = Html::openElement( 'fieldset' ) .
-			Html::element( 'legend', array(), wfMessage( 'config-db-web-account' )->text() ) .
-			$this->getCheckBox(
-				'_SameAccount', 'config-db-web-account-same',
-				array( 'class' => 'hideShowRadio', 'rel' => 'dbOtherAccount' )
-			) .
-			Html::openElement( 'div', array( 'id' => 'dbOtherAccount', 'style' => $wrapperStyle ) ) .
-			$this->getRadioSet( array(
-				'var' => '_WebWindowsAuthentication',
-				'label' => 'config-mssql-auth',
-				'itemLabelPrefix' => 'config-mssql-',
-				'values' => array( 'sqlauth', 'windowsauth' ),
-				'itemAttribs' => array(
-					'sqlauth' => array(
-						'class' => 'showHideRadio',
-						'rel' => 'dbCredentialBox',
-					),
-					'windowsauth' => array(
-						'class' => 'hideShowRadio',
-						'rel' => 'dbCredentialBox',
-					)
-				),
-				'help' => $this->parent->getHelpBox( 'config-mssql-web-auth' )
-			) ) .
-			Html::openElement( 'div', array( 'id' => 'dbCredentialBox', 'style' => $displayStyle ) ) .
-			$this->getTextBox( 'wgDBuser', 'config-db-username' ) .
-			$this->getPasswordBox( 'wgDBpassword', 'config-db-password' ) .
-			Html::closeElement( 'div' );
-
-		if ( $noCreateMsg ) {
-			$s .= $this->parent->getWarningBox( wfMessage( $noCreateMsg )->plain() );
-		} else {
-			$s .= $this->getCheckBox( '_CreateDBAccount', 'config-db-web-create' );
-		}
-
-		$s .= Html::closeElement( 'div' ) . Html::closeElement( 'fieldset' );
-
-		return $s;
-	}
-
-	/**
-	 * @return Status
-	 */
-	public function submitSettingsForm() {
-		$this->setVarsFromRequest( array(
-				'wgDBuser',
-				'wgDBpassword',
-				'_SameAccount',
-				'_CreateDBAccount',
-				'_WebWindowsAuthentication'
-		) );
-
-		if ( $this->getVar( '_SameAccount' ) ) {
-			$this->setVar( '_WebWindowsAuthentication', $this->getVar( '_InstallWindowsAuthentication' ) );
-			$this->setVar( 'wgDBuser', $this->getVar( '_InstallUser' ) );
-			$this->setVar( 'wgDBpassword', $this->getVar( '_InstallPassword' ) );
-		}
-
-		if ( $this->getVar( '_WebWindowsAuthentication' ) == 'windowsauth' ) {
-			$this->setVar( 'wgDBuser', '' );
-			$this->setVar( 'wgDBpassword', '' );
-			$this->setVar( 'wgDBWindowsAuthentication', true );
-		} else {
-			$this->setVar( 'wgDBWindowsAuthentication', false );
-		}
-
-		if ( $this->getVar( '_CreateDBAccount' )
-			&& $this->getVar( '_WebWindowsAuthentication' ) == 'sqlauth'
-			&& strval( $this->getVar( 'wgDBpassword' ) ) == ''
-		) {
-			return Status::newFatal( 'config-db-password-empty', $this->getVar( 'wgDBuser' ) );
-		}
-
-		// Validate the create checkbox
-		$canCreate = $this->canCreateAccounts();
-		if ( !$canCreate ) {
-			$this->setVar( '_CreateDBAccount', false );
-			$create = false;
-		} else {
-			$create = $this->getVar( '_CreateDBAccount' );
-		}
-
-		if ( !$create ) {
-			// Test the web account
-			$user = $this->getVar( 'wgDBuser' );
-			$password = $this->getVar( 'wgDBpassword' );
-
-			if ( $this->getVar( '_WebWindowsAuthentication' ) == 'windowsauth' ) {
-				$user = 'windowsauth';
-				$password = 'windowsauth';
-			}
-
-			try {
-				DatabaseBase::factory( 'mssql', array(
-					'host' => $this->getVar( 'wgDBserver' ),
-					'user' => $user,
-					'password' => $password,
-					'dbname' => false,
-					'flags' => 0,
-					'tablePrefix' => $this->getVar( 'wgDBprefix' ),
-					'schema' => $this->getVar( 'wgDBmwschema' ),
-				) );
-			} catch ( DBConnectionError $e ) {
-				return Status::newFatal( 'config-connection-error', $e->getMessage() );
-			}
-		}
-
-		return Status::newGood();
-	}
-
-	public function preInstall() {
-		# Add our user callback to installSteps, right before the tables are created.
-		$callback = array(
-			'name' => 'user',
-			'callback' => array( $this, 'setupUser' ),
-		);
-		$this->parent->addInstallStep( $callback, 'tables' );
-	}
-
-	/**
-	 * @return Status
-	 */
-	public function setupDatabase() {
-		$status = $this->getConnection();
-		if ( !$status->isOK() ) {
-			return $status;
-		}
-		/** @var DatabaseBase $conn */
-		$conn = $status->value;
-		$dbName = $this->getVar( 'wgDBname' );
-		$schemaName = $this->getVar( 'wgDBmwschema' );
-		if ( !$this->databaseExists( $dbName ) ) {
-			$conn->query(
-				"CREATE DATABASE " . $conn->addIdentifierQuotes( $dbName ),
-				__METHOD__
-			);
-			$conn->selectDB( $dbName );
-			if ( !$this->schemaExists( $schemaName ) ) {
-				$conn->query(
-					"CREATE SCHEMA " . $conn->addIdentifierQuotes( $schemaName ),
-					__METHOD__
-				);
-			}
-			if ( !$this->catalogExists( $schemaName ) ) {
-				$conn->query(
-					"CREATE FULLTEXT CATALOG " . $conn->addIdentifierQuotes( $schemaName ),
-					__METHOD__
-				);
-			}
-		}
-		$this->setupSchemaVars();
-
-		return $status;
-	}
-
-	/**
-	 * @return Status
-	 */
-	public function setupUser() {
-		$dbUser = $this->getVar( 'wgDBuser' );
-		if ( $dbUser == $this->getVar( '_InstallUser' )
-				|| ( $this->getVar( '_InstallWindowsAuthentication' ) == 'windowsauth'
-					&& $this->getVar( '_WebWindowsAuthentication' ) == 'windowsauth' ) ) {
-			return Status::newGood();
-		}
-		$status = $this->getConnection();
-		if ( !$status->isOK() ) {
-			return $status;
-		}
-
-		$this->setupSchemaVars();
-		$dbName = $this->getVar( 'wgDBname' );
-		$this->db->selectDB( $dbName );
-		$password = $this->getVar( 'wgDBpassword' );
-		$schemaName = $this->getVar( 'wgDBmwschema' );
-
-		if ( $this->getVar( '_WebWindowsAuthentication' ) == 'windowsauth' ) {
-			$dbUser = 'windowsauth';
-			$password = 'windowsauth';
-		}
-
-		if ( $this->getVar( '_CreateDBAccount' ) ) {
-			$tryToCreate = true;
-		} else {
-			$tryToCreate = false;
-		}
-
-		$escUser = $this->db->addIdentifierQuotes( $dbUser );
-		$escDb = $this->db->addIdentifierQuotes( $dbName );
-		$escSchema = $this->db->addIdentifierQuotes( $schemaName );
-		$grantableNames = array();
-		if ( $tryToCreate ) {
-			$escPass = $this->db->addQuotes( $password );
-
-			if ( !$this->loginExists( $dbUser ) ) {
-				try {
-					$this->db->begin();
-					$this->db->selectDB( 'master' );
-					$logintype = $this->getVar( '_WebWindowsAuthentication' ) == 'windowsauth'
-						? 'FROM WINDOWS'
-						: "WITH PASSWORD = $escPass";
-					$this->db->query( "CREATE LOGIN $escUser $logintype" );
-					$this->db->selectDB( $dbName );
-					$this->db->query( "CREATE USER $escUser FOR LOGIN $escUser WITH DEFAULT_SCHEMA = $escSchema" );
-					$this->db->commit();
-					$grantableNames[] = $dbUser;
-				} catch ( DBQueryError $dqe ) {
-					$this->db->rollback();
-					$status->warning( 'config-install-user-create-failed', $dbUser, $dqe->getText() );
-				}
-			} elseif ( !$this->userExists( $dbUser ) ) {
-				try {
-					$this->db->begin();
-					$this->db->selectDB( $dbName );
-					$this->db->query( "CREATE USER $escUser FOR LOGIN $escUser WITH DEFAULT_SCHEMA = $escSchema" );
-					$this->db->commit();
-					$grantableNames[] = $dbUser;
-				} catch ( DBQueryError $dqe ) {
-					$this->db->rollback();
-					$status->warning( 'config-install-user-create-failed', $dbUser, $dqe->getText() );
-				}
-			} else {
-				$status->warning( 'config-install-user-alreadyexists', $dbUser );
-				$grantableNames[] = $dbUser;
-			}
-		}
-
-		// Try to grant to all the users we know exist or we were able to create
-		$this->db->selectDB( $dbName );
-		foreach ( $grantableNames as $name ) {
-			try {
-				// First try to grant full permissions
-				$fullPrivArr = array(
-					'BACKUP DATABASE', 'BACKUP LOG', 'CREATE FUNCTION', 'CREATE PROCEDURE',
-					'CREATE TABLE', 'CREATE VIEW', 'CREATE FULLTEXT CATALOG', 'SHOWPLAN'
-				);
-				$fullPrivList = implode( ', ', $fullPrivArr );
-				$this->db->begin();
-				$this->db->query( "GRANT $fullPrivList ON DATABASE :: $escDb TO $escUser", __METHOD__ );
-				$this->db->query( "GRANT CONTROL ON SCHEMA :: $escSchema TO $escUser", __METHOD__ );
-				$this->db->commit();
-			} catch ( DBQueryError $dqe ) {
-				// If that fails, try to grant the limited subset specified in $this->webUserPrivs
-				try {
-					$privList = implode( ', ', $this->webUserPrivs );
-					$this->db->rollback();
-					$this->db->begin();
-					$this->db->query( "GRANT $privList ON SCHEMA :: $escSchema TO $escUser", __METHOD__ );
-					$this->db->commit();
-				} catch ( DBQueryError $dqe ) {
-					$this->db->rollback();
-					$status->fatal( 'config-install-user-grant-failed', $dbUser, $dqe->getText() );
-				}
-				// Also try to grant SHOWPLAN on the db, but don't fail if we can't
-				// (just makes a couple things in mediawiki run slower since
-				// we have to run SELECT COUNT(*) instead of getting the query plan)
-				try {
-					$this->db->query( "GRANT SHOWPLAN ON DATABASE :: $escDb TO $escUser", __METHOD__ );
-				} catch ( DBQueryError $dqe ) {
-				}
-			}
-		}
-
-		return $status;
-	}
-
-	public function createTables() {
-		$status = parent::createTables();
-
-		// Do last-minute stuff like fulltext indexes (since they can't be inside a transaction)
-		if ( $status->isOk() ) {
-			$searchindex = $this->db->tableName( 'searchindex' );
-			$schema = $this->db->addIdentifierQuotes( $this->getVar( 'wgDBmwschema' ) );
-			try {
-				$this->db->query( "CREATE FULLTEXT INDEX ON $searchindex (si_title, si_text) "
-					. "KEY INDEX si_page ON $schema" );
-			} catch ( DBQueryError $dqe ) {
-				$status->fatal( 'config-install-tables-failed', $dqe->getText() );
-			}
-		}
-
-		return $status;
-	}
-
-	public function getGlobalDefaults() {
-		// The default $wgDBmwschema is null, which breaks Postgres and other DBMSes that require
-		// the use of a schema, so we need to set it here
-		return array_merge( parent::getGlobalDefaults(), array(
-			'wgDBmwschema' => 'mediawiki',
-		) );
-	}
-
-	/**
-	 * Try to see if the login exists
-	 * @param string $user Username to check
-	 * @return bool
-	 */
-	private function loginExists( $user ) {
-		$res = $this->db->selectField( 'sys.sql_logins', 1, array( 'name' => $user ) );
-		return (bool)$res;
-	}
-
-	/**
-	 * Try to see if the user account exists
-	 * We assume we already have the appropriate database selected
-	 * @param string $user Username to check
-	 * @return bool
-	 */
-	private function userExists( $user ) {
-		$res = $this->db->selectField( 'sys.sysusers', 1, array( 'name' => $user ) );
-		return (bool)$res;
-	}
-
-	/**
-	 * Try to see if a given database exists
-	 * @param string $dbName Database name to check
-	 * @return bool
-	 */
-	private function databaseExists( $dbName ) {
-		$res = $this->db->selectField( 'sys.databases', 1, array( 'name' => $dbName ) );
-		return (bool)$res;
-	}
-
-	/**
-	 * Try to see if a given schema exists
-	 * We assume we already have the appropriate database selected
-	 * @param string $schemaName Schema name to check
-	 * @return bool
-	 */
-	private function schemaExists( $schemaName ) {
-		$res = $this->db->selectField( 'sys.schemas', 1, array( 'name' => $schemaName ) );
-		return (bool)$res;
-	}
-
-	/**
-	 * Try to see if a given fulltext catalog exists
-	 * We assume we already have the appropriate database selected
-	 * @param string $catalogName Catalog name to check
-	 * @return bool
-	 */
-	private function catalogExists( $catalogName ) {
-		$res = $this->db->selectField( 'sys.fulltext_catalogs', 1, array( 'name' => $catalogName ) );
-		return (bool)$res;
-	}
-
-	/**
-	 * Get variables to substitute into tables.sql and the SQL patch files.
-	 *
-	 * @return array
-	 */
-	public function getSchemaVars() {
-		return array(
-			'wgDBname' => $this->getVar( 'wgDBname' ),
-			'wgDBmwschema' => $this->getVar( 'wgDBmwschema' ),
-			'wgDBuser' => $this->getVar( 'wgDBuser' ),
-			'wgDBpassword' => $this->getVar( 'wgDBpassword' ),
-		);
-	}
-
-	public function getLocalSettings() {
-		$schema = LocalSettingsGenerator::escapePhpString( $this->getVar( 'wgDBmwschema' ) );
-		$prefix = LocalSettingsGenerator::escapePhpString( $this->getVar( 'wgDBprefix' ) );
-		$windowsauth = $this->getVar( 'wgDBWindowsAuthentication' ) ? 'true' : 'false';
-
-		return "# MSSQL specific settings
-\$wgDBWindowsAuthentication = {$windowsauth};
-\$wgDBmwschema = \"{$schema}\";
-\$wgDBprefix = \"{$prefix}\";";
-	}
-}
diff --git a/includes/installer/MssqlUpdater.php b/includes/installer/MssqlUpdater.php
deleted file mode 100644
index 164cfab4..00000000
--- a/includes/installer/MssqlUpdater.php
+++ /dev/null
@@ -1,143 +0,0 @@
-<?php
-/**
- * Microsoft SQL Server-specific installer.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- * http://www.gnu.org/copyleft/gpl.html
- *
- * @file
- * @ingroup Deployment
- */
-
-/**
- * Class for setting up the MediaWiki database using Microsoft SQL Server.
- *
- * @ingroup Deployment
- * @since 1.23
- */
-
-class MssqlUpdater extends DatabaseUpdater {
-
-	/**
-	 * @var DatabaseMssql
-	 */
-	protected $db;
-
-	protected function getCoreUpdateList() {
-		return array(
-			// 1.23
-			array( 'addField', 'mwuser', 'user_password_expires', 'patch-user_password_expires.sql' ),
-
-			// 1.24
-			array( 'addField', 'page', 'page_lang', 'patch-page-page_lang.sql' ),
-
-			// 1.25
-			array( 'dropTable', 'hitcounter' ),
-			array( 'dropField', 'site_stats', 'ss_total_views', 'patch-drop-ss_total_views.sql' ),
-			array( 'dropField', 'page', 'page_counter', 'patch-drop-page_counter.sql' ),
-			// Constraint updates
-			array( 'updateConstraints', 'category_types', 'categorylinks', 'cl_type' ),
-			array( 'updateConstraints', 'major_mime', 'filearchive', 'fa_major_mime' ),
-			array( 'updateConstraints', 'media_type', 'filearchive', 'fa_media_type' ),
-			array( 'updateConstraints', 'major_mime', 'oldimage', 'oi_major_mime' ),
-			array( 'updateConstraints', 'media_type', 'oldimage', 'oi_media_type' ),
-			array( 'updateConstraints', 'major_mime', 'image', 'img_major_mime' ),
-			array( 'updateConstraints', 'media_type', 'image', 'img_media_type' ),
-			array( 'updateConstraints', 'media_type', 'uploadstash', 'us_media_type' ),
-			// END: Constraint updates
-
-			array( 'modifyField', 'image', 'img_major_mime',
-				'patch-img_major_mime-chemical.sql' ),
-			array( 'modifyField', 'oldimage', 'oi_major_mime',
-				'patch-oi_major_mime-chemical.sql' ),
-			array( 'modifyField', 'filearchive', 'fa_major_mime',
-				'patch-fa_major_mime-chemical.sql' ),
-		);
-	}
-
-	/**
-	 * Drops unnamed and creates named constraints following the pattern
-	 * <column>_ckc
-	 *
-	 * @param string $constraintType
-	 * @param string $table Name of the table to which the field belongs
-	 * @param string $field Name of the field to modify
-	 * @return bool False if patch is skipped.
-	 */
-	protected function updateConstraints( $constraintType, $table, $field ) {
-		global $wgDBname, $wgDBmwschema;
-
-		if ( !$this->doTable( $table ) ) {
-			return true;
-		}
-
-		$this->output( "...updating constraints on [$table].[$field] ..." );
-		$updateKey = "$field-$constraintType-ck";
-		if ( !$this->db->tableExists( $table, __METHOD__ ) ) {
-			$this->output( "...$table table does not exist, skipping modify field patch.\n" );
-			return true;
-		} elseif ( !$this->db->fieldExists( $table, $field, __METHOD__ ) ) {
-			$this->output( "...$field field does not exist in $table table, " .
-				"skipping modify field patch.\n" );
-			return true;
-		} elseif ( $this->updateRowExists( $updateKey ) ) {
-			$this->output( "...$field in table $table already patched.\n" );
-			return true;
-		}
-
-		# After all checks passed, start the update
-		$this->insertUpdateRow( $updateKey );
-		$path = 'named_constraints.sql';
-		$constraintMap = array(
-			'category_types' =>
-				"($field in('page', 'subcat', 'file'))",
-			'major_mime'     =>
-				"($field in('unknown', 'application', 'audio', 'image', 'text', 'video'," .
-				" 'message', 'model', 'multipart'))",
-			'media_type'     =>
-				"($field in('UNKNOWN', 'BITMAP', 'DRAWING', 'AUDIO', 'VIDEO', 'MULTIMEDIA'," .
-				"'OFFICE', 'TEXT', 'EXECUTABLE', 'ARCHIVE'))"
-		);
-		$constraint = $constraintMap[$constraintType];
-
-		# and hack-in those variables that should be replaced
-		# in our template file right now
-		$this->db->setSchemaVars( array(
-			'tableName'       => $table,
-			'fieldName'       => $field,
-			'checkConstraint' => $constraint,
-			'wgDBname'        => $wgDBname,
-			'wgDBmwschema'    => $wgDBmwschema,
-		) );
-
-		# Full path from file name
-		$path = $this->db->patchPath( $path );
-
-		# No need for a cursor allowing result-iteration; just apply a patch
-		# store old value for re-setting later
-		$wasScrollable = $this->db->scrollableCursor( false );
-
-		# Apply patch
-		$this->db->sourceFile( $path );
-
-		# Reset DB instance to have original state
-		$this->db->setSchemaVars( false );
-		$this->db->scrollableCursor( $wasScrollable );
-
-		$this->output( "done.\n" );
-
-		return true;
-	}
-}
diff --git a/includes/installer/OracleInstaller.php b/includes/installer/OracleInstaller.php
deleted file mode 100644
index 9e692ea4..00000000
--- a/includes/installer/OracleInstaller.php
+++ /dev/null
@@ -1,344 +0,0 @@
-<?php
-/**
- * Oracle-specific installer.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- * http://www.gnu.org/copyleft/gpl.html
- *
- * @file
- * @ingroup Deployment
- */
-
-/**
- * Class for setting up the MediaWiki database using Oracle.
- *
- * @ingroup Deployment
- * @since 1.17
- */
-class OracleInstaller extends DatabaseInstaller {
-
-	protected $globalNames = array(
-		'wgDBserver',
-		'wgDBname',
-		'wgDBuser',
-		'wgDBpassword',
-		'wgDBprefix',
-	);
-
-	protected $internalDefaults = array(
-		'_OracleDefTS' => 'USERS',
-		'_OracleTempTS' => 'TEMP',
-		'_InstallUser' => 'SYSTEM',
-	);
-
-	public $minimumVersion = '9.0.1'; // 9iR1
-
-	protected $connError = null;
-
-	public function getName() {
-		return 'oracle';
-	}
-
-	public function isCompiled() {
-		return self::checkExtension( 'oci8' );
-	}
-
-	public function getConnectForm() {
-		if ( $this->getVar( 'wgDBserver' ) == 'localhost' ) {
-			$this->parent->setVar( 'wgDBserver', '' );
-		}
-
-		return $this->getTextBox(
-			'wgDBserver',
-			'config-db-host-oracle',
-			array(),
-			$this->parent->getHelpBox( 'config-db-host-oracle-help' )
-		) .
-			Html::openElement( 'fieldset' ) .
-			Html::element( 'legend', array(), wfMessage( 'config-db-wiki-settings' )->text() ) .
-			$this->getTextBox( 'wgDBprefix', 'config-db-prefix' ) .
-			$this->getTextBox( '_OracleDefTS', 'config-oracle-def-ts' ) .
-			$this->getTextBox(
-				'_OracleTempTS',
-				'config-oracle-temp-ts',
-				array(),
-				$this->parent->getHelpBox( 'config-db-oracle-help' )
-			) .
-			Html::closeElement( 'fieldset' ) .
-			$this->parent->getWarningBox( wfMessage( 'config-db-account-oracle-warn' )->text() ) .
-			$this->getInstallUserBox() .
-			$this->getWebUserBox();
-	}
-
-	public function submitInstallUserBox() {
-		parent::submitInstallUserBox();
-		$this->parent->setVar( '_InstallDBname', $this->getVar( '_InstallUser' ) );
-
-		return Status::newGood();
-	}
-
-	public function submitConnectForm() {
-		// Get variables from the request
-		$newValues = $this->setVarsFromRequest( array(
-			'wgDBserver',
-			'wgDBprefix',
-			'wgDBuser',
-			'wgDBpassword'
-		) );
-		$this->parent->setVar( 'wgDBname', $this->getVar( 'wgDBuser' ) );
-
-		// Validate them
-		$status = Status::newGood();
-		if ( !strlen( $newValues['wgDBserver'] ) ) {
-			$status->fatal( 'config-missing-db-server-oracle' );
-		} elseif ( !self::checkConnectStringFormat( $newValues['wgDBserver'] ) ) {
-			$status->fatal( 'config-invalid-db-server-oracle', $newValues['wgDBserver'] );
-		}
-		if ( !preg_match( '/^[a-zA-Z0-9_]*$/', $newValues['wgDBprefix'] ) ) {
-			$status->fatal( 'config-invalid-schema', $newValues['wgDBprefix'] );
-		}
-		if ( !$status->isOK() ) {
-			return $status;
-		}
-
-		// Submit user box
-		$status = $this->submitInstallUserBox();
-		if ( !$status->isOK() ) {
-			return $status;
-		}
-
-		// Try to connect trough multiple scenarios
-		// Scenario 1: Install with a manually created account
-		$status = $this->getConnection();
-		if ( !$status->isOK() ) {
-			if ( $this->connError == 28009 ) {
-				// _InstallUser seems to be a SYSDBA
-				// Scenario 2: Create user with SYSDBA and install with new user
-				$status = $this->submitWebUserBox();
-				if ( !$status->isOK() ) {
-					return $status;
-				}
-				$status = $this->openSYSDBAConnection();
-				if ( !$status->isOK() ) {
-					return $status;
-				}
-				if ( !$this->getVar( '_CreateDBAccount' ) ) {
-					$status->fatal( 'config-db-sys-create-oracle' );
-				}
-			} else {
-				return $status;
-			}
-		} else {
-			// check for web user credentials
-			// Scenario 3: Install with a priviliged user but use a restricted user
-			$statusIS3 = $this->submitWebUserBox();
-			if ( !$statusIS3->isOK() ) {
-				return $statusIS3;
-			}
-		}
-
-		/**
-		 * @var $conn DatabaseBase
-		 */
-		$conn = $status->value;
-
-		// Check version
-		$version = $conn->getServerVersion();
-		if ( version_compare( $version, $this->minimumVersion ) < 0 ) {
-			return Status::newFatal( 'config-oracle-old', $this->minimumVersion, $version );
-		}
-
-		return $status;
-	}
-
-	public function openConnection() {
-		$status = Status::newGood();
-		try {
-			$db = new DatabaseOracle(
-				$this->getVar( 'wgDBserver' ),
-				$this->getVar( '_InstallUser' ),
-				$this->getVar( '_InstallPassword' ),
-				$this->getVar( '_InstallDBname' ),
-				0,
-				$this->getVar( 'wgDBprefix' )
-			);
-			$status->value = $db;
-		} catch ( DBConnectionError $e ) {
-			$this->connError = $e->db->lastErrno();
-			$status->fatal( 'config-connection-error', $e->getMessage() );
-		}
-
-		return $status;
-	}
-
-	public function openSYSDBAConnection() {
-		$status = Status::newGood();
-		try {
-			$db = new DatabaseOracle(
-				$this->getVar( 'wgDBserver' ),
-				$this->getVar( '_InstallUser' ),
-				$this->getVar( '_InstallPassword' ),
-				$this->getVar( '_InstallDBname' ),
-				DBO_SYSDBA,
-				$this->getVar( 'wgDBprefix' )
-			);
-			$status->value = $db;
-		} catch ( DBConnectionError $e ) {
-			$this->connError = $e->db->lastErrno();
-			$status->fatal( 'config-connection-error', $e->getMessage() );
-		}
-
-		return $status;
-	}
-
-	public function needsUpgrade() {
-		$tempDBname = $this->getVar( 'wgDBname' );
-		$this->parent->setVar( 'wgDBname', $this->getVar( 'wgDBuser' ) );
-		$retVal = parent::needsUpgrade();
-		$this->parent->setVar( 'wgDBname', $tempDBname );
-
-		return $retVal;
-	}
-
-	public function preInstall() {
-		# Add our user callback to installSteps, right before the tables are created.
-		$callback = array(
-			'name' => 'user',
-			'callback' => array( $this, 'setupUser' )
-		);
-		$this->parent->addInstallStep( $callback, 'database' );
-	}
-
-	public function setupDatabase() {
-		$status = Status::newGood();
-
-		return $status;
-	}
-
-	public function setupUser() {
-		global $IP;
-
-		if ( !$this->getVar( '_CreateDBAccount' ) ) {
-			return Status::newGood();
-		}
-
-		// normaly only SYSDBA users can create accounts
-		$status = $this->openSYSDBAConnection();
-		if ( !$status->isOK() ) {
-			if ( $this->connError == 1031 ) {
-				// insufficient  privileges (looks like a normal user)
-				$status = $this->openConnection();
-				if ( !$status->isOK() ) {
-					return $status;
-				}
-			} else {
-				return $status;
-			}
-		}
-
-		$this->db = $status->value;
-		$this->setupSchemaVars();
-
-		if ( !$this->db->selectDB( $this->getVar( 'wgDBuser' ) ) ) {
-			$this->db->setFlag( DBO_DDLMODE );
-			$error = $this->db->sourceFile( "$IP/maintenance/oracle/user.sql" );
-			if ( $error !== true || !$this->db->selectDB( $this->getVar( 'wgDBuser' ) ) ) {
-				$status->fatal( 'config-install-user-failed', $this->getVar( 'wgDBuser' ), $error );
-			}
-		} elseif ( $this->db->getFlag( DBO_SYSDBA ) ) {
-			$status->fatal( 'config-db-sys-user-exists-oracle', $this->getVar( 'wgDBuser' ) );
-		}
-
-		if ( $status->isOK() ) {
-			// user created or already existing, switching back to a normal connection
-			// as the new user has all needed privileges to setup the rest of the schema
-			// i will be using that user as _InstallUser from this point on
-			$this->db->close();
-			$this->db = false;
-			$this->parent->setVar( '_InstallUser', $this->getVar( 'wgDBuser' ) );
-			$this->parent->setVar( '_InstallPassword', $this->getVar( 'wgDBpassword' ) );
-			$this->parent->setVar( '_InstallDBname', $this->getVar( 'wgDBuser' ) );
-			$status = $this->getConnection();
-		}
-
-		return $status;
-	}
-
-	/**
-	 * Overload: after this action field info table has to be rebuilt
-	 * @return Status
-	 */
-	public function createTables() {
-		$this->setupSchemaVars();
-		$this->db->setFlag( DBO_DDLMODE );
-		$this->parent->setVar( 'wgDBname', $this->getVar( 'wgDBuser' ) );
-		$status = parent::createTables();
-		$this->db->clearFlag( DBO_DDLMODE );
-
-		$this->db->query( 'BEGIN fill_wiki_info; END;' );
-
-		return $status;
-	}
-
-	public function getSchemaVars() {
-		$varNames = array(
-			# These variables are used by maintenance/oracle/user.sql
-			'_OracleDefTS',
-			'_OracleTempTS',
-			'wgDBuser',
-			'wgDBpassword',
-
-			# These are used by tables.sql
-			'wgDBprefix',
-		);
-		$vars = array();
-		foreach ( $varNames as $name ) {
-			$vars[$name] = $this->getVar( $name );
-		}
-
-		return $vars;
-	}
-
-	public function getLocalSettings() {
-		$prefix = $this->getVar( 'wgDBprefix' );
-
-		return "# Oracle specific settings
-\$wgDBprefix = \"{$prefix}\";
-";
-	}
-
-	/**
-	 * Function checks the format of Oracle connect string
-	 * The actual validity of the string is checked by attempting to connect
-	 *
-	 * Regex should be able to validate all connect string formats
-	 * [//](host|tns_name)[:port][/service_name][:POOLED]
-	 * http://www.orafaq.com/wiki/EZCONNECT
-	 *
-	 * @since 1.22
-	 *
-	 * @param string $connect_string
-	 *
-	 * @return bool Whether the connection string is valid.
-	 */
-	public static function checkConnectStringFormat( $connect_string ) {
-		// @@codingStandardsIgnoreStart Long lines with regular expressions.
-		// @todo Very long regular expression. Make more readable?
-		$isValid = preg_match( '/^[[:alpha:]][\w\-]*(?:\.[[:alpha:]][\w\-]*){0,2}$/', $connect_string ); // TNS name
-		$isValid |= preg_match( '/^(?:\/\/)?[\w\-\.]+(?::[\d]+)?(?:\/(?:[\w\-\.]+(?::(pooled|dedicated|shared))?)?(?:\/[\w\-\.]+)?)?$/', $connect_string ); // EZConnect
-		// @@codingStandardsIgnoreEnd
-		return (bool)$isValid;
-	}
-}
diff --git a/includes/installer/OracleUpdater.php b/includes/installer/OracleUpdater.php
deleted file mode 100644
index 03dbd1ce..00000000
--- a/includes/installer/OracleUpdater.php
+++ /dev/null
@@ -1,289 +0,0 @@
-<?php
-/**
- * Oracle-specific updater.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- * http://www.gnu.org/copyleft/gpl.html
- *
- * @file
- * @ingroup Deployment
- */
-
-/**
- * Class for handling updates to Oracle databases.
- *
- * @ingroup Deployment
- * @since 1.17
- */
-class OracleUpdater extends DatabaseUpdater {
-
-	/**
-	 * Handle to the database subclass
-	 *
-	 * @var DatabaseOracle
-	 */
-	protected $db;
-
-	protected function getCoreUpdateList() {
-		return array(
-			array( 'disableContentHandlerUseDB' ),
-
-			// 1.17
-			array( 'doNamespaceDefaults' ),
-			array( 'doFKRenameDeferr' ),
-			array( 'doFunctions17' ),
-			array( 'doSchemaUpgrade17' ),
-			array( 'doInsertPage0' ),
-			array( 'doRemoveNotNullEmptyDefaults' ),
-			array( 'addTable', 'user_former_groups', 'patch-user_former_groups.sql' ),
-
-			// 1.18
-			array( 'addIndex', 'user', 'i02', 'patch-user_email_index.sql' ),
-			array( 'modifyField', 'user_properties', 'up_property', 'patch-up_property.sql' ),
-			array( 'addTable', 'uploadstash', 'patch-uploadstash.sql' ),
-			array( 'doRecentchangesFK2Cascade' ),
-
-			// 1.19
-			array( 'addIndex', 'logging', 'i05', 'patch-logging_type_action_index.sql' ),
-			array( 'addField', 'revision', 'rev_sha1', 'patch-rev_sha1_field.sql' ),
-			array( 'addField', 'archive', 'ar_sha1', 'patch-ar_sha1_field.sql' ),
-			array( 'doRemoveNotNullEmptyDefaults2' ),
-			array( 'addIndex', 'page', 'i03', 'patch-page_redirect_namespace_len.sql' ),
-			array( 'addField', 'uploadstash', 'us_chunk_inx', 'patch-us_chunk_inx_field.sql' ),
-			array( 'addField', 'job', 'job_timestamp', 'patch-job_timestamp_field.sql' ),
-			array( 'addIndex', 'job', 'i02', 'patch-job_timestamp_index.sql' ),
-			array( 'doPageRestrictionsPKUKFix' ),
-
-			// 1.20
-			array( 'addIndex', 'ipblocks', 'i05', 'patch-ipblocks_i05_index.sql' ),
-			array( 'addIndex', 'revision', 'i05', 'patch-revision_i05_index.sql' ),
-			array( 'dropField', 'category', 'cat_hidden', 'patch-cat_hidden.sql' ),
-
-			// 1.21
-			array( 'addField', 'revision', 'rev_content_format',
-				'patch-revision-rev_content_format.sql' ),
-			array( 'addField', 'revision', 'rev_content_model',
-				'patch-revision-rev_content_model.sql' ),
-			array( 'addField', 'archive', 'ar_content_format', 'patch-archive-ar_content_format.sql' ),
-			array( 'addField', 'archive', 'ar_content_model', 'patch-archive-ar_content_model.sql' ),
-			array( 'addField', 'archive', 'ar_id', 'patch-archive-ar_id.sql' ),
-			array( 'addField', 'externallinks', 'el_id', 'patch-externallinks-el_id.sql' ),
-			array( 'addField', 'page', 'page_content_model', 'patch-page-page_content_model.sql' ),
-			array( 'enableContentHandlerUseDB' ),
-			array( 'dropField', 'site_stats', 'ss_admins', 'patch-ss_admins.sql' ),
-			array( 'dropField', 'recentchanges', 'rc_moved_to_title', 'patch-rc_moved.sql' ),
-			array( 'addTable', 'sites', 'patch-sites.sql' ),
-			array( 'addField', 'filearchive', 'fa_sha1', 'patch-fa_sha1.sql' ),
-			array( 'addField', 'job', 'job_token', 'patch-job_token.sql' ),
-			array( 'addField', 'job', 'job_attempts', 'patch-job_attempts.sql' ),
-			array( 'addField', 'uploadstash', 'us_props', 'patch-uploadstash-us_props.sql' ),
-			array( 'modifyField', 'user_groups', 'ug_group', 'patch-ug_group-length-increase-255.sql' ),
-			array( 'modifyField', 'user_former_groups', 'ufg_group',
-				'patch-ufg_group-length-increase-255.sql' ),
-
-			// 1.23
-			array( 'addIndex', 'logging', 'i06', 'patch-logging_user_text_type_time_index.sql' ),
-			array( 'addIndex', 'logging', 'i07', 'patch-logging_user_text_time_index.sql' ),
-			array( 'addField', 'user', 'user_password_expires', 'patch-user_password_expire.sql' ),
-			array( 'addField', 'page', 'page_links_updated', 'patch-page_links_updated.sql' ),
-			array( 'addField', 'recentchanges', 'rc_source', 'patch-rc_source.sql' ),
-
-			// 1.24
-			array( 'addField', 'page', 'page_lang', 'patch-page-page_lang.sql' ),
-
-			// 1.25
-			array( 'dropTable', 'hitcounter' ),
-			array( 'dropField', 'site_stats', 'ss_total_views', 'patch-drop-ss_total_views.sql' ),
-			array( 'dropField', 'page', 'page_counter', 'patch-drop-page_counter.sql' ),
-
-			// KEEP THIS AT THE BOTTOM!!
-			array( 'doRebuildDuplicateFunction' ),
-
-		);
-	}
-
-	/**
-	 * MySQL uses datatype defaults for NULL inserted into NOT NULL fields
-	 * In namespace case that results into insert of 0 which is default namespace
-	 * Oracle inserts NULL, so namespace fields should have a default value
-	 */
-	protected function doNamespaceDefaults() {
-		$meta = $this->db->fieldInfo( 'page', 'page_namespace' );
-		if ( $meta->defaultValue() != null ) {
-			return;
-		}
-
-		$this->applyPatch(
-			'patch_namespace_defaults.sql',
-			false,
-			'Altering namespace fields with default value'
-		);
-	}
-
-	/**
-	 * Uniform FK names + deferrable state
-	 */
-	protected function doFKRenameDeferr() {
-		$meta = $this->db->query( '
-			SELECT COUNT(*) cnt
-			FROM user_constraints
-			WHERE constraint_type = \'R\' AND deferrable = \'DEFERRABLE\''
-		);
-		$row = $meta->fetchRow();
-		if ( $row && $row['cnt'] > 0 ) {
-			return;
-		}
-
-		$this->applyPatch( 'patch_fk_rename_deferred.sql', false, "Altering foreign keys ... " );
-	}
-
-	/**
-	 * Recreate functions to 17 schema layout
-	 */
-	protected function doFunctions17() {
-		$this->applyPatch( 'patch_create_17_functions.sql', false, "Recreating functions" );
-	}
-
-	/**
-	 * Schema upgrade 16->17
-	 * there are no incremental patches prior to this
-	 */
-	protected function doSchemaUpgrade17() {
-		// check if iwlinks table exists which was added in 1.17
-		if ( $this->db->tableExists( 'iwlinks' ) ) {
-			return;
-		}
-		$this->applyPatch( 'patch_16_17_schema_changes.sql', false, "Updating schema to 17" );
-	}
-
-	/**
-	 * Insert page (page_id = 0) to prevent FK constraint violation
-	 */
-	protected function doInsertPage0() {
-		$this->output( "Inserting page 0 if missing ... " );
-		$row = array(
-			'page_id' => 0,
-			'page_namespace' => 0,
-			'page_title' => ' ',
-			'page_is_redirect' => 0,
-			'page_is_new' => 0,
-			'page_random' => 0,
-			'page_touched' => $this->db->timestamp(),
-			'page_latest' => 0,
-			'page_len' => 0
-		);
-		$this->db->insert( 'page', $row, 'OracleUpdater:doInserPage0', array( 'IGNORE' ) );
-		$this->output( "ok\n" );
-	}
-
-	/**
-	 * Remove DEFAULT '' NOT NULL constraints from fields as '' is internally
-	 * converted to NULL in Oracle
-	 */
-	protected function doRemoveNotNullEmptyDefaults() {
-		$meta = $this->db->fieldInfo( 'categorylinks', 'cl_sortkey_prefix' );
-		if ( $meta->isNullable() ) {
-			return;
-		}
-		$this->applyPatch(
-			'patch_remove_not_null_empty_defs.sql',
-			false,
-			'Removing not null empty constraints'
-		);
-	}
-
-	protected function doRemoveNotNullEmptyDefaults2() {
-		$meta = $this->db->fieldInfo( 'ipblocks', 'ipb_by_text' );
-		if ( $meta->isNullable() ) {
-			return;
-		}
-		$this->applyPatch(
-			'patch_remove_not_null_empty_defs2.sql',
-			false,
-			'Removing not null empty constraints'
-		);
-	}
-
-	/**
-	 * Removed forcing of invalid state on recentchanges_fk2.
-	 * cascading taken in account in the deleting function
-	 */
-	protected function doRecentchangesFK2Cascade() {
-		$meta = $this->db->query( 'SELECT 1 FROM all_constraints WHERE owner = \'' .
-			strtoupper( $this->db->getDBname() ) .
-			'\' AND constraint_name = \'' .
-			$this->db->tablePrefix() .
-			'RECENTCHANGES_FK2\' AND delete_rule = \'CASCADE\''
-		);
-		$row = $meta->fetchRow();
-		if ( $row ) {
-			return;
-		}
-
-		$this->applyPatch( 'patch_recentchanges_fk2_cascade.sql', false, "Altering RECENTCHANGES_FK2" );
-	}
-
-	/**
-	 * Fixed wrong PK, UK definition
-	 */
-	protected function doPageRestrictionsPKUKFix() {
-		$this->output( "Altering PAGE_RESTRICTIONS keys ... " );
-
-		$meta = $this->db->query( 'SELECT column_name FROM all_cons_columns WHERE owner = \'' .
-			strtoupper( $this->db->getDBname() ) .
-			'\' AND constraint_name = \'' .
-			$this->db->tablePrefix() .
-			'PAGE_RESTRICTIONS_PK\' AND rownum = 1'
-		);
-		$row = $meta->fetchRow();
-		if ( $row['column_name'] == 'PR_ID' ) {
-			$this->output( "seems to be up to date.\n" );
-
-			return;
-		}
-
-		$this->applyPatch( 'patch-page_restrictions_pkuk_fix.sql', false );
-		$this->output( "ok\n" );
-	}
-
-	/**
-	 * rebuilding of the function that duplicates tables for tests
-	 */
-	protected function doRebuildDuplicateFunction() {
-		$this->applyPatch( 'patch_rebuild_dupfunc.sql', false, "Rebuilding duplicate function" );
-	}
-
-	/**
-	 * Overload: after this action field info table has to be rebuilt
-	 *
-	 * @param array $what
-	 */
-	public function doUpdates( $what = array( 'core', 'extensions', 'purge', 'stats' ) ) {
-		parent::doUpdates( $what );
-
-		$this->db->query( 'BEGIN fill_wiki_info; END;' );
-	}
-
-	/**
-	 * Overload: because of the DDL_MODE tablename escaping is a bit dodgy
-	 */
-	public function purgeCache() {
-		# We can't guarantee that the user will be able to use TRUNCATE,
-		# but we know that DELETE is available to us
-		$this->output( "Purging caches..." );
-		$this->db->delete( '/*Q*/' . $this->db->tableName( 'objectcache' ), '*', __METHOD__ );
-		$this->output( "done.\n" );
-	}
-}