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<?php |
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namespace Mattbit\Flat\Storage; |
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use Mattbit\Flat\Model\DocumentInterface; |
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use Mattbit\Flat\Storage\EncoderInterface; |
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use Mattbit\Flat\Exception\DuplicateKeyException; |
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use Mattbit\Flat\Storage\Filesystem\FilesystemCursor; |
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class DocumentStore |
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{ |
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/** |
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* @var EngineInterface |
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*/ |
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protected $engine; |
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/** |
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* @var string |
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*/ |
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protected $namespace; |
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/** |
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* Create a DocumentStore instance. |
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* |
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* @param EngineInterface $engine |
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* @param string $namespace |
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*/ |
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public function __construct(EngineInterface $engine, $namespace) |
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{ |
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$this->engine = $engine; |
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$this->namespace = $namespace; |
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} |
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public function getNamespace() |
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{ |
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return $this->namespace; |
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} |
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public function getEngine() |
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{ |
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return $this->engine; |
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} |
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public function truncate() |
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{ |
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return $this->engine->clear($this->namespace); |
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} |
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public function insert(DocumentInterface $document) |
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{ |
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if (!$id = $document->getId()) { |
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$id = $this->generateId(); |
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$document->setId($id); |
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} |
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if ($this->engine->has($id, $this->namespace)) { |
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throw new DuplicateKeyException("Cannot insert document with duplicate key: {$id}"); |
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} |
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$this->engine->put($document, $id, $this->namespace); |
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return $id; |
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} |
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public function update(DocumentInterface $document) |
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{ |
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if (!$id = $document->getId()) { |
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throw new \Exception("Cannot update a document without _id!"); |
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} |
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return $this->engine->put($document, $id, $this->namespace); |
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} |
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public function remove($id) |
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{ |
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return $this->engine->delete($id, $this->namespace); |
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} |
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public function find($id) |
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{ |
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return $this->engine->get($id, $this->namespace); |
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} |
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public function scan(callable $filter = null, $limit = null) |
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{ |
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$documents = []; |
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$index = 0; |
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foreach ($this->engine->all($this->namespace) as $document) { |
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if ($limit && $index >= $limit) { |
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break; |
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} |
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$index += 1; |
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if (!$filter || call_user_func($filter, $document)) { |
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$documents[] = $document; |
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} |
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} |
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return $documents; |
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} |
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protected function generateId() |
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{ |
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// A simple uniqid should have enough entropy. |
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// @todo: evaluate the usage of ramsey/uuid |
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return uniqid(); |
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} |
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} |
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mattbit /
flat
