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<?php |
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namespace Flying\Struct\Storage; |
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use Flying\Struct\ConfigurationManager; |
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/** |
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* Objects storage container |
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*/ |
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class Storage implements StorageInterface |
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{ |
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/** |
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* List of stored objects |
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* |
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* @var array |
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*/ |
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private $storage = []; |
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/** |
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* List of objects marked as "dirty" |
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* |
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* @var array |
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*/ |
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private $dirty = []; |
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/** |
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* Storage backend |
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* |
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* @var BackendInterface |
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*/ |
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private $backend; |
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/** |
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* Register given object in storage |
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* |
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* @param StorableInterface $object |
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* @return $this |
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*/ |
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public function register(StorableInterface $object) |
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{ |
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$hash = spl_object_hash($object); |
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$this->storage[$hash] = $object; |
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return $this; |
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} |
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/** |
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* Check if given object is registered into storage |
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* |
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* @param StorableInterface $object |
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* @return boolean |
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*/ |
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public function has(StorableInterface $object) |
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{ |
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$hash = spl_object_hash($object); |
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return array_key_exists($hash, $this->storage); |
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} |
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/** |
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* Remove given object from storage |
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* |
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* @param StorableInterface $object |
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* @return $this |
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*/ |
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public function remove(StorableInterface $object) |
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{ |
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$hash = spl_object_hash($object); |
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unset($this->storage[$hash]); |
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return $this; |
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} |
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/** |
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* Load contents of given object from storage |
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* |
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* @param string $key Storage key |
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* @return mixed |
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*/ |
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public function load($key) |
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{ |
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$backend = $this->getBackend(); |
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$result = null; |
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if ($backend->has($key)) { |
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$result = $backend->load($key); |
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} |
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return $result; |
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} |
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/** |
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* Get storage backend |
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* |
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* @return BackendInterface |
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*/ |
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public function getBackend() |
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{ |
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if (!$this->backend) { |
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$this->backend = ConfigurationManager::getConfiguration()->getStorageBackend(); |
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} |
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return $this->backend; |
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} |
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/** |
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* Set storage backend |
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* |
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* @param BackendInterface $backend |
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* @return $this |
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*/ |
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public function setBackend(BackendInterface $backend) |
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{ |
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$this->backend = $backend; |
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return $this; |
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} |
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/** |
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* Mark given object as "dirty" |
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* |
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* @param StorableInterface $object |
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* @return $this |
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*/ |
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public function markAsDirty(StorableInterface $object) |
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{ |
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$hash = spl_object_hash($object); |
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$this->dirty[$hash] = true; |
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return $this; |
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} |
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/** |
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* Mark given object as "not dirty" |
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* |
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* @param StorableInterface $object |
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* @return $this |
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*/ |
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public function markAsNotDirty(StorableInterface $object) |
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{ |
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$hash = spl_object_hash($object); |
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unset($this->dirty[$hash]); |
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return $this; |
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} |
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/** |
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* Check if given object is "dirty" |
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* |
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* @param StorableInterface $object |
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* @return boolean |
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*/ |
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public function isDirty(StorableInterface $object) |
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{ |
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$hash = spl_object_hash($object); |
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return array_key_exists($hash, $this->dirty); |
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} |
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/** |
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* Flush all changes in objects into storage |
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* |
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* @throws \RuntimeException |
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* @return $this |
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*/ |
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public function flush() |
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{ |
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$backend = $this->getBackend(); |
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$storedKeys = []; |
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/** @var $object StorableInterface */ |
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foreach ($this->storage as $hash => $object) { |
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$key = $object->getStorageKey(); |
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if ((!array_key_exists($hash, $this->dirty)) && $backend->has($key)) { |
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continue; |
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} |
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if (in_array($key, $storedKeys, true)) { |
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throw new \RuntimeException('Multiple objects with same storage key "' . $key |
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. '" are requested to be stored'); |
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} |
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$backend->save($key, $object->toStorage()); |
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$storedKeys[] = $key; |
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} |
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$this->dirty = []; |
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return $this; |
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} |
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} |
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FlyingDR /
struct
