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<?php
declare(strict_types=1);
namespace Doctrine\ORM\Id;
use Doctrine\DBAL\Connections\PrimaryReadReplicaConnection;
use Doctrine\Deprecations\Deprecation;
use Doctrine\ORM\EntityManagerInterface;
use Serializable;
use function serialize;
use function unserialize;
/**
* Represents an ID generator that uses a database sequence.
*/
class SequenceGenerator extends AbstractIdGenerator implements Serializable
{
private int $nextValue = 0;
private int|null $maxValue = null;
/**
* Initializes a new sequence generator.
*
* @param string $sequenceName The name of the sequence.
* @param int $allocationSize The allocation size of the sequence.
*/
public function __construct(
private string $sequenceName,
private int $allocationSize,
) {
}
public function generateId(EntityManagerInterface $em, object|null $entity): int
{
if ($this->maxValue === null || $this->nextValue === $this->maxValue) {
// Allocate new values
$connection = $em->getConnection();
$sql = $connection->getDatabasePlatform()->getSequenceNextValSQL($this->sequenceName);
if ($connection instanceof PrimaryReadReplicaConnection) {
$connection->ensureConnectedToPrimary();
}
$this->nextValue = (int) $connection->fetchOne($sql);
$this->maxValue = $this->nextValue + $this->allocationSize;
}
return $this->nextValue++;
}
/**
* Gets the maximum value of the currently allocated bag of values.
*/
public function getCurrentMaxValue(): int|null
{
return $this->maxValue;
}
/**
* Gets the next value that will be returned by generate().
*/
public function getNextValue(): int
{
return $this->nextValue;
}
/** @deprecated without replacement. */
final public function serialize(): string
{
Deprecation::trigger(
'doctrine/orm',
'https://github.com/doctrine/orm/pull/11468',
'%s() is deprecated, use __serialize() instead. %s won\'t implement the Serializable interface anymore in ORM 4.',
__METHOD__,
self::class,
);
return serialize($this->__serialize());
}
/** @return array<string, mixed> */
public function __serialize(): array
{
return [
'allocationSize' => $this->allocationSize,
'sequenceName' => $this->sequenceName,
];
}
/** @deprecated without replacement. */
final public function unserialize(string $serialized): void
{
Deprecation::trigger(
'doctrine/orm',
'https://github.com/doctrine/orm/pull/11468',
'%s() is deprecated, use __unserialize() instead. %s won\'t implement the Serializable interface anymore in ORM 4.',
__METHOD__,
self::class,
);
$this->__unserialize(unserialize($serialized));
}
/** @param array<string, mixed> $data */
public function __unserialize(array $data): void
{
$this->sequenceName = $data['sequenceName'];
$this->allocationSize = $data['allocationSize'];
}
}
|
