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<?php |
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declare(strict_types=1); |
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namespace Doctrine\ODM\MongoDB\Iterator; |
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use Doctrine\ODM\MongoDB\Mapping\ClassMetadata; |
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use Doctrine\ODM\MongoDB\UnitOfWork; |
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use Generator; |
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use Iterator; |
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use RuntimeException; |
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use Traversable; |
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/** |
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* Iterator that wraps a traversable and hydrates results into objects |
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* |
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* @internal |
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*/ |
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final class HydratingIterator implements Iterator |
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{ |
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/** @var Generator|null */ |
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private $iterator; |
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/** @var UnitOfWork */ |
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private $unitOfWork; |
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/** @var ClassMetadata */ |
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private $class; |
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/** @var array */ |
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private $unitOfWorkHints; |
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public function __construct(Traversable $traversable, UnitOfWork $unitOfWork, ClassMetadata $class, array $unitOfWorkHints = []) |
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{ |
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$this->iterator = $this->wrapTraversable($traversable); |
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$this->unitOfWork = $unitOfWork; |
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$this->class = $class; |
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$this->unitOfWorkHints = $unitOfWorkHints; |
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} |
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public function __destruct() |
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{ |
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$this->iterator = null; |
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} |
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/** |
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* @see http://php.net/iterator.current |
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* |
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* @return mixed |
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*/ |
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public function current() |
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{ |
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return $this->hydrate($this->getIterator()->current()); |
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} |
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/** |
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* @see http://php.net/iterator.mixed |
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* |
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* @return mixed |
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*/ |
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public function key() |
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{ |
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return $this->getIterator()->key(); |
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} |
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/** |
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* @see http://php.net/iterator.next |
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*/ |
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public function next() : void |
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{ |
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$this->getIterator()->next(); |
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} |
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/** |
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* @see http://php.net/iterator.rewind |
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*/ |
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public function rewind() : void |
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{ |
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$this->getIterator()->rewind(); |
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} |
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/** |
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* @see http://php.net/iterator.valid |
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*/ |
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public function valid() : bool |
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{ |
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return $this->key() !== null; |
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} |
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private function getIterator() : Generator |
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{ |
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if ($this->iterator === null) { |
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throw new RuntimeException('Iterator has already been destroyed'); |
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} |
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return $this->iterator; |
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} |
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private function hydrate($document) |
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{ |
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return $document !== null ? $this->unitOfWork->getOrCreateDocument($this->class->name, $document, $this->unitOfWorkHints) : null; |
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} |
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private function wrapTraversable(Traversable $traversable) : Generator |
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{ |
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foreach ($traversable as $key => $value) { |
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yield $key => $value; |
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} |
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} |
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} |
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doctrine /
mongodb-odm
Let’s assume that you have a directory layout like this:
. |-- OtherDir | |-- Bar.php | `-- Foo.php `-- SomeDir `-- Foo.phpand let’s assume the following content of
Bar.php:If both files
OtherDir/Foo.phpandSomeDir/Foo.phpare loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.phpHowever, as
OtherDir/Foo.phpdoes not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: