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<?php |
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/* |
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* This file is part of Transfer. |
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* |
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* For the full copyright and license information, please view the LICENSE file located |
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* in the root directory. |
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*/ |
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namespace Transfer\Storage; |
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use Transfer\Storage\Exception\BadStorageIterableException; |
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use Transfer\Storage\Exception\ObjectNotFoundException; |
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/** |
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* Storage chaining utility. |
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*/ |
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class ChainStorage implements StorageInterface |
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{ |
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/** |
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* @var array Storage collection |
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*/ |
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private $storageCollection; |
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/** |
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* @param array $storageCollection Storage collection |
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*/ |
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public function __construct(array $storageCollection) |
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{ |
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$this->storageCollection = $storageCollection; |
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foreach ($this->storageCollection as $storage) { |
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if (!$storage instanceof StorageInterface) { |
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throw new \InvalidArgumentException('Storage collection must contain only StorageInterface instances.'); |
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} |
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} |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function add($object, $id = null) |
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{ |
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/** @var StorageInterface $storage */ |
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foreach ($this->storageCollection as $storage) { |
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if ($storage->add($object, $id)) { |
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return true; |
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} |
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} |
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return false; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function contains($object) |
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{ |
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/** @var StorageInterface $storage */ |
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foreach ($this->storageCollection as $storage) { |
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if ($storage->contains($object)) { |
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return true; |
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} |
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} |
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return false; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function containsId($id) |
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{ |
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/** @var StorageInterface $storage */ |
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foreach ($this->storageCollection as $storage) { |
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if ($storage->containsId($id)) { |
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return true; |
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} |
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} |
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return false; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function findById($id) |
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{ |
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/** @var StorageInterface $storage */ |
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foreach ($this->storageCollection as $storage) { |
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try { |
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return $storage->findById($id); |
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} catch (ObjectNotFoundException $e) { |
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// Go to next storage instance |
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} |
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} |
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throw new ObjectNotFoundException($id); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function remove($object) |
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{ |
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/** @var StorageInterface $storage */ |
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foreach ($this->storageCollection as $storage) { |
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if ($storage->remove($object)) { |
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return true; |
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} |
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} |
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return false; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function removeById($id) |
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{ |
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/** @var StorageInterface $storage */ |
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foreach ($this->storageCollection as $storage) { |
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if ($storage->removeById($id)) { |
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return true; |
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} |
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} |
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return false; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function all() |
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{ |
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$iterator = new \AppendIterator(); |
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/** @var StorageInterface $storage */ |
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foreach ($this->storageCollection as $storage) { |
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if (is_array($storage->all())) { |
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$iterator->append(new \ArrayIterator($storage->all())); |
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} elseif ($storage->all() instanceof \Iterator) { |
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$iterator->append($storage->all()); |
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} else { |
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throw new BadStorageIterableException($storage); |
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} |
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} |
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return $iterator; |
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} |
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} |
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transfer-framework /
transfer
