PRGProgressId.php

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<?php
 
declare(strict_types=1);
 
class PRGProgressId
{
    public const DELIMITER = '_';
 
    protected int $ass_id;
    protected int $usr_id;
    protected int $node_obj_id;
 
    public function __construct(int $ass_id, int $usr_id, int $node_obj_id)
    {
        $this->ass_id = $ass_id;
        $this->usr_id = $usr_id;
        $this->node_obj_id = $node_obj_id;
    }
 
    public static function createFromString(string $id): self
    {
        $id = array_map('intval', explode(self::DELIMITER, $id));
        return new self(...$id);
    }
 
    public function getAssignmentId(): int
    {
        return $this->ass_id;
    }
 
    public function getUsrId(): int
    {
        return $this->usr_id;
    }
 
    public function getNodeId(): int
    {
        return $this->node_obj_id;
    }
 
    public function __toString(): string
    {
        return implode(self::DELIMITER, [$this->ass_id, $this->usr_id, $this->node_obj_id]);
    }
}