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<?php
declare(strict_types=1);
namespace Doctrine\ORM\Query\Expr;
use Stringable;
use function count;
use function implode;
/**
* Expression class for building DQL Order By parts.
*
* @link www.doctrine-project.org
*/
class OrderBy implements Stringable
{
protected string $preSeparator = '';
protected string $separator = ', ';
protected string $postSeparator = '';
/** @var string[] */
protected array $allowedClasses = [];
/** @psalm-var list<string> */
protected array $parts = [];
public function __construct(
string|null $sort = null,
string|null $order = null,
) {
if ($sort) {
$this->add($sort, $order);
}
}
public function add(string $sort, string|null $order = null): void
{
$order = ! $order ? 'ASC' : $order;
$this->parts[] = $sort . ' ' . $order;
}
/** @psalm-return 0|positive-int */
public function count(): int
{
return count($this->parts);
}
/** @psalm-return list<string> */
public function getParts(): array
{
return $this->parts;
}
public function __toString(): string
{
return $this->preSeparator . implode($this->separator, $this->parts) . $this->postSeparator;
}
}
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