databasefactory.php

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<?php
use Xoops\Core\Database\Factory;

class XoopsDatabaseFactory extends Factory
{

    public static function getDatabaseConnection()
    {
        static $legacy;

        $file = \XoopsBaseConfig::get('root-path') . '/class/database/mysqldatabase.php';
        if (!isset($legacy) && file_exists($file)) {
            require_once $file;
            if (!defined('XOOPS_DB_PROXY')) {
                $class = 'XoopsMysqlDatabaseSafe';
            } else {
                $class = 'XoopsMysqlDatabaseProxy';
            }
            $xoopsPreload = XoopsPreload::getInstance();
            $xoopsPreload->triggerEvent('core.class.database.databasefactory.connection', array(&$class));
            $legacy = new $class();
            $legacy->setPrefix(\XoopsBaseConfig::get('db-prefix'));
            $legacy->conn = \Xoops\Core\Database\Factory::getConnection();
        }
        if (is_null($legacy->conn)) {
            trigger_error('notrace:Unable to connect to database', E_USER_ERROR);
        }
        return $legacy;
    }
}