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| <?php | |
| /** | |
| * @file | |
| * Contains \Drupal\Core\Lock\PersistentDatabaseLockBackend. | |
| */ | |
| namespace Drupal\Core\Lock; | |
| use Drupal\Core\Database\Connection; | |
| /** | |
| * Defines the persistent database lock backend. This backend is global for this | |
| * Drupal installation. | |
| * | |
| * @ingroup lock | |
| */ | |
| class PersistentDatabaseLockBackend extends DatabaseLockBackend { | |
| /** | |
| * Constructs a new PersistentDatabaseLockBackend. | |
| * | |
| * @param \Drupal\Core\Database\Connection $database | |
| * The database connection. | |
| */ | |
| public function __construct(Connection $database) { | |
| // Do not call the parent constructor to avoid registering a shutdown | |
| // function that releases all the locks at the end of a request. | |
| $this->database = $database; | |
| // Set the lockId to a fixed string to make the lock ID the same across | |
| // multiple requests. The lock ID is used as a page token to relate all the | |
| // locks set during a request to each other. | |
| // @see \Drupal\Core\Lock\LockBackendInterface::getLockId() | |
| $this->lockId = 'persistent'; | |
| } | |
| } |