class.ilCalendarRecurrences.php

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<?php
 
declare(strict_types=1);
class ilCalendarRecurrences
{
    public static function _getRecurrences(int $a_cal_id): array
    {
        global $DIC;
 
        $ilDB = $DIC['ilDB'];
        $query = "SELECT rule_id FROM cal_recurrence_rules " .
            "WHERE cal_id = " . $ilDB->quote($a_cal_id, 'integer') . " ";
        $res = $ilDB->query($query);
        $recurrences = [];
        while ($row = $res->fetchRow(ilDBConstants::FETCHMODE_OBJECT)) {
            $recurrences[] = new ilCalendarRecurrence((int) $row->rule_id);
        }
        return $recurrences;
    }
 
    public static function _getFirstRecurrence($a_cal_id): ilCalendarRecurrence
    {
        $recs = self::_getRecurrences($a_cal_id);
        if (count($recs)) {
            return $recs[0];
        }
        $new_rec = new ilCalendarRecurrence();
        $new_rec->setEntryId($a_cal_id);
        return $new_rec;
    }
}