Documentation & API reference
class NullStorage
Defines a stub storage controller.
This storage is always empty; the controller reads and writes nothing.
The stub implementation is needed for synchronizing configuration during installation of a module, in which case all configuration being shipped with the module is known to be new. Therefore, the module installation process is able to short-circuit the full diff against the active configuration; the diff would yield all currently available configuration as items to remove, since they do not exist in the module's default configuration directory.
This also can be used for testing purposes.
Hierarchy
- class \Drupal\Core\Config\NullStorage implements StorageInterface
Expanded class hierarchy of NullStorage
1 file declares its use of NullStorage
- UrlGeneratorTest.php in drupal/
core/ tests/ Drupal/ Tests/ Core/ Routing/ UrlGeneratorTest.php - Contains Drupal\Tests\Core\Routing\UrlGeneratorTest.
File
- drupal/
core/ lib/ Drupal/ Core/ Config/ NullStorage.php, line 24 - Definition of Drupal\Core\Config\NullStorage.
Namespace
Drupal\Core\ConfigView source
class NullStorage implements StorageInterface {
/**
* Implements Drupal\Core\Config\StorageInterface::exists().
*/
public function exists($name) {
return FALSE;
}
/**
* Implements Drupal\Core\Config\StorageInterface::read().
*/
public function read($name) {
return array();
}
/**
* Implements Drupal\Core\Config\StorageInterface::write().
*/
public function write($name, array $data) {
return FALSE;
}
/**
* Implements Drupal\Core\Config\StorageInterface::delete().
*/
public function delete($name) {
return FALSE;
}
/**
* Implements Drupal\Core\Config\StorageInterface::rename().
*/
public function rename($name, $new_name) {
return FALSE;
}
/**
* Implements Drupal\Core\Config\StorageInterface::encode().
*/
public function encode($data) {
return $data;
}
/**
* Implements Drupal\Core\Config\StorageInterface::decode().
*/
public function decode($raw) {
return $raw;
}
/**
* Implements Drupal\Core\Config\StorageInterface::listAll().
*/
public function listAll($prefix = '') {
return array();
}
/**
* Implements Drupal\Core\Config\StorageInterface::deleteAll().
*/
public function deleteAll($prefix = '') {
return FALSE;
}
}