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<?php declare(strict_types=1); |
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namespace Igni\Storage\Driver\MongoDB; |
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use Igni\Storage\Driver\MemorySavingCursor; |
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use Igni\Storage\Hydration\MemorySavingHydrator; |
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use Igni\Storage\EntityManager; |
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use MongoDB\Driver\Command; |
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use Igni\Storage\Storable; |
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use Igni\Storage\Exception\CursorException; |
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use Igni\Storage\Hydration\ObjectHydrator; |
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use IteratorIterator; |
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class Cursor implements MemorySavingCursor |
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{ |
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/** @var Connection */ |
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private $connection; |
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/** @var Command */ |
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private $command; |
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/** @var ObjectHydrator */ |
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private $hydrator; |
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/** @var \MongoDB\Driver\Cursor */ |
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private $baseCursor; |
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/** @var ConnectionOptions */ |
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private $options; |
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/** @var Storable|object|array|null */ |
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private $current = null; |
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/** @var IteratorIterator */ |
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private $iterator; |
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/** @var EntityManager */ |
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private $manager; |
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/** @var bool */ |
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private $saveMemory = false; |
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public function __construct( |
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Connection $connection, |
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ConnectionOptions $options, |
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Command $command |
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) { |
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$this->connection = $connection; |
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$this->command = $command; |
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$this->options = $options; |
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} |
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public function getId(): string |
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{ |
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return (string) $this->baseCursor->getId(); |
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} |
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public function getBaseCursor(): \MongoDB\Driver\Cursor |
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{ |
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$this->open(); |
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return $this->baseCursor; |
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} |
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public function getConnection(): \Igni\Storage\Driver\Connection |
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{ |
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return $this->connection; |
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} |
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public function hydrateWith(ObjectHydrator $hydrator): void |
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{ |
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$this->hydrator = $hydrator; |
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} |
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public function saveMemory(bool $save = true): void |
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{ |
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if ($this->hydrator instanceof MemorySavingHydrator) { |
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$this->hydrator->saveMemory($save); |
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} |
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} |
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public function current() |
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{ |
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$this->open(); |
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return $this->current; |
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} |
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public function next(): void |
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{ |
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$this->open(); |
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$this->iterator->next(); |
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$this->current = $this->fetch(); |
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} |
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public function key(): int |
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{ |
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$this->open(); |
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return $this->iterator->key(); |
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} |
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public function valid(): bool |
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{ |
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$this->open(); |
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return $this->iterator->valid(); |
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} |
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public function rewind(): void |
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{ |
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$this->close(); |
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$this->open(); |
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} |
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public function toArray(): array |
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{ |
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return iterator_to_array($this); |
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} |
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public function open(): void |
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{ |
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if ($this->iterator) { |
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return; |
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} |
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try { |
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$this->baseCursor = $this->connection |
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->getBaseConnection() |
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->executeCommand( |
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$this->options->getDatabase(), |
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$this->command |
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); |
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$this->baseCursor->setTypeMap(['root' => 'array', 'document' => 'array', 'array' => 'array']); |
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$this->iterator = new IteratorIterator($this->baseCursor); |
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$this->iterator->rewind(); |
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if ($this->iterator->valid()) { |
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$this->current = $this->fetch(); |
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} |
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} catch (\Exception $e) { |
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throw CursorException::forExecutionFailure($this, $e->getMessage()); |
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} |
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} |
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public function close(): void |
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{ |
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$this->current = null; |
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if ($this->baseCursor) { |
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$this->baseCursor = null; |
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$this->iterator = null; |
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} |
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} |
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public function execute(): void |
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{ |
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$this->open(); |
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$this->close(); |
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} |
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private function fetch() |
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{ |
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$fetched = $this->iterator->current(); |
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if (isset($fetched['_id'])) { |
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$fetched['id'] = $fetched['_id']; |
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unset($fetched['_id']); |
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} |
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if ($this->hydrator && $fetched !== null) { |
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$fetched = $this->hydrator->hydrate($fetched); |
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} |
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return $fetched; |
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} |
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public function __destruct() |
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{ |
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$this->close(); |
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} |
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} |
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