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<?php |
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namespace Doctrine\Common\Persistence\Mapping\Driver; |
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use Doctrine\Common\Persistence\Mapping\ClassMetadata; |
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use Doctrine\Common\Persistence\Mapping\MappingException; |
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use function array_keys; |
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use function array_merge; |
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use function is_file; |
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use function str_replace; |
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/** |
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* Base driver for file-based metadata drivers. |
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* |
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* A file driver operates in a mode where it loads the mapping files of individual |
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* classes on demand. This requires the user to adhere to the convention of 1 mapping |
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* file per class and the file names of the mapping files must correspond to the full |
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* class name, including namespace, with the namespace delimiters '\', replaced by dots '.'. |
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*/ |
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abstract class FileDriver implements MappingDriver |
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{ |
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/** @var FileLocator */ |
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protected $locator; |
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/** @var ClassMetadata[]|null */ |
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protected $classCache; |
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/** @var string|null */ |
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protected $globalBasename; |
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/** |
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* Initializes a new FileDriver that looks in the given path(s) for mapping |
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* documents and operates in the specified operating mode. |
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* |
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* @param string|string[]|FileLocator $locator A FileLocator or one/multiple paths |
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* where mapping documents can be found. |
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* @param string|null $fileExtension |
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*/ |
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public function __construct($locator, $fileExtension = null) |
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{ |
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if ($locator instanceof FileLocator) { |
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$this->locator = $locator; |
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} else { |
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$this->locator = new DefaultFileLocator((array) $locator, $fileExtension); |
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} |
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} |
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/** |
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* Sets the global basename. |
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* |
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* @param string $file |
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* |
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* @return void |
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*/ |
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public function setGlobalBasename($file) |
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{ |
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$this->globalBasename = $file; |
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} |
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/** |
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* Retrieves the global basename. |
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* |
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* @return string|null |
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*/ |
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public function getGlobalBasename() |
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{ |
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return $this->globalBasename; |
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} |
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/** |
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* Gets the element of schema meta data for the class from the mapping file. |
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* This will lazily load the mapping file if it is not loaded yet. |
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* |
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* @param string $className |
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* |
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* @return ClassMetadata The element of schema meta data. |
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* |
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* @throws MappingException |
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*/ |
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public function getElement($className) |
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{ |
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if ($this->classCache === null) { |
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$this->initialize(); |
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} |
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if (isset($this->classCache[$className])) { |
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return $this->classCache[$className]; |
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} |
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$result = $this->loadMappingFile($this->locator->findMappingFile($className)); |
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if (! isset($result[$className])) { |
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throw MappingException::invalidMappingFile($className, str_replace('\\', '.', $className) . $this->locator->getFileExtension()); |
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} |
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$this->classCache[$className] = $result[$className]; |
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return $result[$className]; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function isTransient($className) |
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{ |
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if ($this->classCache === null) { |
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$this->initialize(); |
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} |
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if (isset($this->classCache[$className])) { |
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return false; |
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} |
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return ! $this->locator->fileExists($className); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getAllClassNames() |
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{ |
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if ($this->classCache === null) { |
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$this->initialize(); |
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} |
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if (! $this->classCache) { |
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return (array) $this->locator->getAllClassNames($this->globalBasename); |
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} |
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return array_merge( |
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array_keys($this->classCache), |
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(array) $this->locator->getAllClassNames($this->globalBasename) |
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); |
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} |
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/** |
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* Loads a mapping file with the given name and returns a map |
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* from class/entity names to their corresponding file driver elements. |
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* |
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* @param string $file The mapping file to load. |
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* |
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* @return ClassMetadata[] |
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*/ |
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abstract protected function loadMappingFile($file); |
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/** |
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* Initializes the class cache from all the global files. |
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* |
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* Using this feature adds a substantial performance hit to file drivers as |
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* more metadata has to be loaded into memory than might actually be |
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* necessary. This may not be relevant to scenarios where caching of |
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* metadata is in place, however hits very hard in scenarios where no |
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* caching is used. |
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* |
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* @return void |
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*/ |
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protected function initialize() |
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{ |
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$this->classCache = []; |
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if ($this->globalBasename === null) { |
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return; |
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} |
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foreach ($this->locator->getPaths() as $path) { |
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$file = $path . '/' . $this->globalBasename . $this->locator->getFileExtension(); |
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if (! is_file($file)) { |
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continue; |
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} |
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$this->classCache = array_merge( |
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$this->classCache, |
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$this->loadMappingFile($file) |
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); |
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} |
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} |
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/** |
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* Retrieves the locator used to discover mapping files by className. |
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* |
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* @return FileLocator |
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*/ |
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public function getLocator() |
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{ |
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return $this->locator; |
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} |
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/** |
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* Sets the locator used to discover mapping files by className. |
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*/ |
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public function setLocator(FileLocator $locator) |
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{ |
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$this->locator = $locator; |
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} |
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} |
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doctrine /
persistence
