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| <?php | |
| /** | |
| * @file | |
| * Contains \Drupal\Core\Queue\Batch. | |
| */ | |
| namespace Drupal\Core\Queue; | |
| /** | |
| * Defines a batch queue handler used by the Batch API. | |
| * | |
| * This implementation: | |
| * - Ensures FIFO ordering. | |
| * - Allows an item to be repeatedly claimed until it is actually deleted (no | |
| * notion of lease time or 'expire' date), to allow multipass operations. | |
| * | |
| * Stale items from failed batches are cleaned from the {queue} table on cron | |
| * using the 'created' date. | |
| * | |
| * @ingroup queue | |
| */ | |
| class Batch extends DatabaseQueue { | |
| /** | |
| * Overrides \Drupal\Core\Queue\DatabaseQueue::claimItem(). | |
| * | |
| * Unlike \Drupal\Core\Queue\DatabaseQueue::claimItem(), this method provides | |
| * a default lease time of 0 (no expiration) instead of 30. This allows the | |
| * item to be claimed repeatedly until it is deleted. | |
| */ | |
| public function claimItem($lease_time = 0) { | |
| $item = $this->connection->queryRange('SELECT data, item_id FROM {queue} q WHERE name = :name ORDER BY item_id ASC', 0, 1, array(':name' => $this->name))->fetchObject(); | |
| if ($item) { | |
| $item->data = unserialize($item->data); | |
| return $item; | |
| } | |
| return FALSE; | |
| } | |
| /** | |
| * Retrieves all remaining items in the queue. | |
| * | |
| * This is specific to Batch API and is not part of the | |
| * \Drupal\Core\Queue\QueueInterface. | |
| * | |
| * @return array | |
| * An array of queue items. | |
| */ | |
| public function getAllItems() { | |
| $result = array(); | |
| $items = $this->connection->query('SELECT data FROM {queue} q WHERE name = :name ORDER BY item_id ASC', array(':name' => $this->name))->fetchAll(); | |
| foreach ($items as $item) { | |
| $result[] = unserialize($item->data); | |
| } | |
| return $result; | |
| } | |
| } |