class BackdropFakeCache

Defines a stub cache implementation to be used during installation.

The stub implementation is needed when database access is not yet available. Because Backdrop's caching system never requires that cached data be present, these stub functions can short-circuit the process and sidestep the need for any persistent storage. Using this cache implementation during normal operations would have a negative impact on performance.

Hierarchy

class BackdropDatabaseCache implements BackdropCacheInterface
- class BackdropFakeCache implements BackdropCacheInterface

Expanded class hierarchy of BackdropFakeCache

2 string references to 'BackdropFakeCache'

backdrop_class_list in core/includes/bootstrap.classes.inc: Lists all the classes used by Backdrop core.
install_begin_request in core/includes/install.core.inc: Begins an installation request, modifying the installation state as needed.

File

core/includes/cache-install.inc, line 16: Provides a stub cache implementation to be used during installation.

View source

class BackdropFakeCache extends BackdropDatabaseCache implements BackdropCacheInterface {

  /**
   * Overrides BackdropDatabaseCache::get().
   */
  public function get($cid) {
    return FALSE;
  }

  /**
   * Overrides BackdropDatabaseCache::getMultiple().
   */
  public function getMultiple(array &$cids) {
    return array();
  }

  /**
   * Overrides BackdropDatabaseCache::set().
   */
  public function set($cid, $data, $expire = CACHE_PERMANENT) {
  }

  /**
   * Overrides BackdropDatabaseCache::delete().
   */
  public function delete($cid) {
    try {
      if (class_exists('Database')) {
        parent::delete($cid);
      }
    }
    catch (Exception $e) {
    }
  }

  /**
   * Overrides BackdropDatabaseCache::deleteMultiple().
   */
  public function deleteMultiple(array $cids) {
    try {
      if (class_exists('Database')) {
        parent::deleteMultiple($cids);
      }
    }
    catch (Exception $e) {
    }
  }

  /**
   * Overrides BackdropDatabaseCache::deletePrefix().
   */
  public function deletePrefix($cid) {
    try {
      if (class_exists('Database')) {
        parent::deletePrefix($cid);
      }
    }
    catch (Exception $e) {
    }
  }

  /**
   * Overrides BackdropDatabaseCache::flush().
   */
  public function flush() {
    try {
      if (class_exists('Database')) {
        parent::flush();
      }
    }
    catch (Exception $e) {
    }
  }

  /**
   * Overrides BackdropDatabaseCache::garbageCollection().
   */
  public function garbageCollection() {
    try {
      if (class_exists('Database')) {
        parent::garbageCollection();
      }
    }
    catch (Exception $e) {
    }
  }

  /**
   * Overrides BackdropDatabaseCache::isEmpty().
   */
  public function isEmpty() {
    return TRUE;
  }
}

Members

Name	Modifiers	Type	Description
BackdropFakeCache::get	public	function	Overrides BackdropDatabaseCache::get(). Overrides BackdropDatabaseCache::get
BackdropFakeCache::getMultiple	public	function	Overrides BackdropDatabaseCache::getMultiple(). Overrides BackdropDatabaseCache::getMultiple
BackdropFakeCache::set	public	function	Overrides BackdropDatabaseCache::set(). Overrides BackdropDatabaseCache::set
BackdropFakeCache::delete	public	function	Overrides BackdropDatabaseCache::delete(). Overrides BackdropDatabaseCache::delete
BackdropFakeCache::deleteMultiple	public	function	Overrides BackdropDatabaseCache::deleteMultiple(). Overrides BackdropDatabaseCache::deleteMultiple
BackdropFakeCache::deletePrefix	public	function	Overrides BackdropDatabaseCache::deletePrefix(). Overrides BackdropDatabaseCache::deletePrefix
BackdropFakeCache::flush	public	function	Overrides BackdropDatabaseCache::flush(). Overrides BackdropDatabaseCache::flush
BackdropFakeCache::garbageCollection	public	function	Overrides BackdropDatabaseCache::garbageCollection(). Overrides BackdropDatabaseCache::garbageCollection
BackdropFakeCache::isEmpty	public	function	Overrides BackdropDatabaseCache::isEmpty(). Overrides BackdropDatabaseCache::isEmpty
BackdropDatabaseCache::__construct	public	function	Constructs a new BackdropDatabaseCache object.
BackdropDatabaseCache::prepareItem	protected	function	Prepares a cached item.
BackdropDatabaseCache::$bin	protected	property

Hierarchy

File

Members

Directory