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NullStorage.php
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NullStorage.php 1.90 KiB
<?php
namespace Drupal\Core\Config;
/**
* Defines a stub storage.
*
* 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.
*/
class NullStorage implements StorageInterface {
/**
* {@inheritdoc}
*/
public function exists($name) {
return FALSE;
}
/**
* {@inheritdoc}
*/
public function read($name) {
return array();
}
/**
* {@inheritdoc}
*/
public function readMultiple(array $names) {
return array();
}
/**
* {@inheritdoc}
*/
public function write($name, array $data) {
return FALSE;
}
/**
* {@inheritdoc}
*/
public function delete($name) {
return FALSE;
}
/**
* {@inheritdoc}
*/
public function rename($name, $new_name) {
return FALSE;
}
/**
* {@inheritdoc}
*/
public function encode($data) {
return $data;
}
/**
* {@inheritdoc}
*/
public function decode($raw) {
return $raw;
}
/**
* {@inheritdoc}
*/
public function listAll($prefix = '') {
return array();
}
/**
* {@inheritdoc}
*/
public function deleteAll($prefix = '') {
return FALSE;
}
/**
* {@inheritdoc}
*/
public function createCollection($collection) {
// No op.
}
/**
* {@inheritdoc}
*/
public function getAllCollectionNames() {
return array();
}
/**
* {@inheritdoc}
*/
public function getCollectionName() {
return '';
}
}