class UpdateBackend

Same name and namespace in other branches
  1. 10 core/lib/Drupal/Core/Update/UpdateBackend.php \Drupal\Core\Update\UpdateBackend
  2. 9 core/lib/Drupal/Core/Update/UpdateBackend.php \Drupal\Core\Update\UpdateBackend
  3. 8.9.x core/lib/Drupal/Core/Update/UpdateBackend.php \Drupal\Core\Update\UpdateBackend

Defines a cache backend for use during Drupal database updates.

Passes on deletes to another backend while extending the NullBackend to avoid using anything cached prior to running updates.

Hierarchy

  • class \Drupal\Core\Update\UpdateBackend extends \Drupal\Core\Cache\NullBackend

Expanded class hierarchy of UpdateBackend

File

View on git.drupalcode.org

core/lib/Drupal/Core/Update/UpdateBackend.php, line 14

Namespace

Drupal\Core\Update
View source 
class UpdateBackend extends NullBackend {
  
  /**
   * The regular runtime cache backend.
   *
   * @var \Drupal\Core\Cache\CacheBackendInterface
   */
  protected $backend;
  
  /**
   * UpdateBackend constructor.
   *
   * @param \Drupal\Core\Cache\CacheBackendInterface $backend
   *   The regular runtime cache backend.
   */
  public function __construct(CacheBackendInterface $backend) {
    $this->backend = $backend;
  }
  
  /**
   * {@inheritdoc}
   */
  public function delete($cid) {
    $this->backend
      ->delete($cid);
  }
  
  /**
   * {@inheritdoc}
   */
  public function deleteMultiple(array $cids) {
    $this->backend
      ->deleteMultiple($cids);
  }
  
  /**
   * {@inheritdoc}
   */
  public function deleteAll() {
    $this->backend
      ->deleteAll();
  }

}

Members

Title Modifiers Object type Summary Overriden Title
CacheBackendInterface::CACHE_PERMANENT constant Indicates that the item should never be removed unless explicitly deleted.
NullBackend::garbageCollection public function Overrides CacheBackendInterface::garbageCollection
NullBackend::get public function Overrides CacheBackendInterface::get
NullBackend::getMultiple public function Overrides CacheBackendInterface::getMultiple
NullBackend::invalidate public function Overrides CacheBackendInterface::invalidate
NullBackend::invalidateAll public function Overrides CacheBackendInterface::invalidateAll
NullBackend::invalidateMultiple public function Overrides CacheBackendInterface::invalidateMultiple
NullBackend::removeBin public function Overrides CacheBackendInterface::removeBin
NullBackend::set public function Overrides CacheBackendInterface::set
NullBackend::setMultiple public function Overrides CacheBackendInterface::setMultiple
UpdateBackend::$backend protected property The regular runtime cache backend.
UpdateBackend::delete public function Overrides NullBackend::delete
UpdateBackend::deleteAll public function Overrides NullBackend::deleteAll
UpdateBackend::deleteMultiple public function Overrides NullBackend::deleteMultiple
UpdateBackend::__construct public function UpdateBackend constructor. Overrides NullBackend::__construct

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