DBAccessBase.php

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<?php
 
use MediaWiki\MediaWikiServices;
use Wikimedia\Rdbms\IDatabase;
use Wikimedia\Rdbms\ILoadBalancer;
 
abstract class DBAccessBase implements IDBAccessObject {
    private $lb;
 
    protected $dbDomain = false;
 
    public function __construct( $dbDomain = false ) {
        $this->dbDomain = $dbDomain;
        $this->lb = MediaWikiServices::getInstance()->getDBLoadBalancerFactory()
            ->getMainLB( $dbDomain );
    }
 
    protected function getConnection( $id, array $groups = [] ) {
        return $this->getLoadBalancer()->getConnectionRef( $id, $groups, $this->dbDomain );
    }
 
    protected function releaseConnection( IDatabase $db ) {
        // no-op
    }
 
    protected function getLoadBalancer() {
        return $this->lb;
    }
}