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DatabaseCreator.php
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DatabaseCreator.php
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<?php
namespace MediaWiki\Installer;
use MediaWiki\Installer\Task\ITaskContext;
use MediaWiki\MainConfigNames;
use MediaWiki\Status\Status;
use Wikimedia\Rdbms\ILoadBalancer;
/**
* Helper for creating databases
*
* @since 1.44
*/
abstract class DatabaseCreator {
/** @var ITaskContext */
protected $context;
/**
* @internal use Task::getDatabaseCreator()
*
* @param ITaskContext $context
* @return DatabaseCreator
*/
public static function createInstance( ITaskContext $context ): DatabaseCreator {
$type = $context->getConfigVar( MainConfigNames::DBtype );
switch ( $type ) {
case 'mysql':
return new MysqlDatabaseCreator( $context );
case 'postgres':
return new PostgresDatabaseCreator( $context );
case 'sqlite':
return new SqliteDatabaseCreator( $context );
default:
throw new \InvalidArgumentException( "Unknown DBMS type \"$type\"" );
}
}
protected function __construct( ITaskContext $context ) {
$this->context = $context;
}
/**
* Check if a database exists on the local cluster or context
*
* @param string $database
* @return bool
*/
abstract public function existsLocally( $database );
/**
* Check if a database exists in the specified LoadBalancer which may be
* for an external cluster.
*
* @param ILoadBalancer $loadBalancer
* @param string $database
* @return bool
*/
abstract public function existsInLoadBalancer( ILoadBalancer $loadBalancer, $database );
/**
* Create a database in the local cluster or install context
*
* @param string $database
* @return Status
*/
abstract public function createLocally( $database ): Status;
/**
* Create a database in the specified LoadBalancer which may be for an
* external cluster.
*
* @param ILoadBalancer $loadBalancer
* @param string $database
* @return Status
*/
abstract public function createInLoadBalancer( ILoadBalancer $loadBalancer, $database ): Status;
}

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