Resolves a cache miss.

When an offset is not found in the object, this is treated as a cache miss. This method allows classes using this implementation to look up the actual value and allow it to be cached.

Parameters

string $key: The offset that was requested.

Return value

mixed The value of the offset, or NULL if no value was found.

Overrides CacheCollector::resolveCacheMiss

File

core/lib/Drupal/Core/State/State.php, line 86

Class

State

Provides the state system using a key value store.

Namespace

Drupal\Core\State

Code

protected function resolveCacheMiss($key) {
  $value = $this->keyValueStore
    ->get($key);
  $this->storage[$key] = $value;
  $this->persist($key);
  return $value;
}

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