diff core/lib/Drupal/Core/State/State.php @ 0:4c8ae668cc8c

Initial import (non-working)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/lib/Drupal/Core/State/State.php	Wed Nov 29 16:09:58 2017 +0000
@@ -0,0 +1,109 @@
+<?php
+
+namespace Drupal\Core\State;
+
+use Drupal\Core\Cache\CacheBackendInterface;
+use Drupal\Core\Cache\CacheCollector;
+use Drupal\Core\KeyValueStore\KeyValueFactoryInterface;
+use Drupal\Core\Lock\LockBackendInterface;
+
+/**
+ * Provides the state system using a key value store.
+ */
+class State extends CacheCollector implements StateInterface {
+
+  /**
+   * The key value store to use.
+   *
+   * @var \Drupal\Core\KeyValueStore\KeyValueStoreInterface
+   */
+  protected $keyValueStore;
+
+  /**
+   * Constructs a State object.
+   *
+   * @param \Drupal\Core\KeyValueStore\KeyValueFactoryInterface $key_value_factory
+   *   The key value store to use.
+   * @param \Drupal\Core\Cache\CacheBackendInterface $cache
+   *   The cache backend.
+   * @param \Drupal\Core\Lock\LockBackendInterface $lock
+   *   The lock backend.
+   */
+  public function __construct(KeyValueFactoryInterface $key_value_factory, CacheBackendInterface $cache, LockBackendInterface $lock) {
+    parent::__construct('state', $cache, $lock);
+    $this->keyValueStore = $key_value_factory->get('state');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function get($key, $default = NULL) {
+    $value = parent::get($key);
+    return $value !== NULL ? $value : $default;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function resolveCacheMiss($key) {
+    $value = $this->keyValueStore->get($key);
+    $this->storage[$key] = $value;
+    $this->persist($key);
+    return $value;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getMultiple(array $keys) {
+    $values = [];
+    foreach ($keys as $key) {
+      $values[$key] = $this->get($key);
+    }
+    return $values;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function set($key, $value) {
+    parent::set($key, $value);
+    $this->keyValueStore->set($key, $value);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setMultiple(array $data) {
+    foreach ($data as $key => $value) {
+      parent::set($key, $value);
+    }
+    $this->keyValueStore->setMultiple($data);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function delete($key) {
+    parent::delete($key);
+    $this->keyValueStore->delete($key);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function deleteMultiple(array $keys) {
+    foreach ($keys as $key) {
+      parent::delete($key);
+    }
+    $this->keyValueStore->deleteMultiple($keys);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function resetCache() {
+    $this->clear();
+  }
+
+}