class.ilSessionDBUpdateSteps9.php

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<?php
 
declare(strict_types=1);
 
class ilSessionDBUpdateSteps9 implements ilDatabaseUpdateSteps
{
    protected \ilDBInterface $db;
 
    public function prepare(\ilDBInterface $db): void
    {
        $this->db = $db;
    }
 
    public function step_1(): void
    {
        // Add index
        if (!$this->db->indexExistsByFields('event_appointment', ['event_id'])) {
            $this->db->addIndex('event_appointment', ['event_id'], 'i1');
        }
    }
 
    public function step_2(): void
    {
        // drop unused table
        $this->db->dropTable('event_file', false);
    }
}