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<?php |
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namespace TheCodingMachine\GraphQL\Controllers\Mappers; |
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use Doctrine\Common\Annotations\AnnotationReader; |
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use Psr\Container\ContainerInterface; |
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use Psr\SimpleCache\CacheInterface; |
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use TheCodingMachine\ClassExplorer\Glob\GlobClassExplorer; |
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use TheCodingMachine\GraphQL\Controllers\Annotations\Type; |
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use Youshido\GraphQL\Type\InputTypeInterface; |
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use Youshido\GraphQL\Type\TypeInterface; |
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/** |
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* Scans all the classes in a given namespace of the main project (not the vendor directory). |
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* Analyzes all classes and uses the @Type annotation to find the types automatically. |
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* |
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* Assumes that the container contains a class whose identifier is the same as the class name. |
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*/ |
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final class GlobTypeMapper implements TypeMapperInterface |
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{ |
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/** |
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* @var string |
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*/ |
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private $namespace; |
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/** |
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* @var AnnotationReader |
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*/ |
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private $annotationReader; |
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/** |
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* @var CacheInterface |
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*/ |
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private $cache; |
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/** |
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* @var int|null |
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*/ |
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private $cacheTtl; |
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/** |
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* @var array<string,string>|null |
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*/ |
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private $map; |
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/** |
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* @var ContainerInterface |
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*/ |
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private $container; |
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/** |
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* @param string $namespace The namespace that contains the GraphQL types (they must have a `@Type` annotation) |
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*/ |
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public function __construct(string $namespace, ContainerInterface $container, AnnotationReader $annotationReader, CacheInterface $cache, ?int $cacheTtl = null) |
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{ |
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$this->namespace = $namespace; |
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$this->container = $container; |
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$this->annotationReader = $annotationReader; |
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$this->cache = $cache; |
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$this->cacheTtl = $cacheTtl; |
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} |
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/** |
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* Returns an array of fully qualified class names. |
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* |
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* @return array<string,string> |
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*/ |
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private function getMap(): array |
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{ |
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if ($this->map === null) { |
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$key = 'globTypeMapper_'.$this->namespace; |
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$this->map = $this->cache->get($key); |
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if ($this->map === null) { |
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$this->map = $this->buildMap(); |
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$this->cache->set($key, $this->map, $this->cacheTtl); |
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} |
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} |
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return $this->map; |
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} |
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/** |
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* @return array<string,string> |
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*/ |
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private function buildMap(): array |
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{ |
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$explorer = new GlobClassExplorer($this->namespace, $this->cache, $this->cacheTtl); |
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$classes = $explorer->getClasses(); |
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$map = []; |
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foreach ($classes as $className) { |
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if (!\class_exists($className)) { |
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continue; |
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} |
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$refClass = new \ReflectionClass($className); |
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/** @var Type $type */ |
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$type = $this->annotationReader->getClassAnnotation($refClass, Type::class); |
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if ($type === null) { |
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continue; |
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} |
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$map[$type->getClass()] = $className; |
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} |
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return $map; |
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} |
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/** |
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* Returns true if this type mapper can map the $className FQCN to a GraphQL type. |
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* |
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* @param string $className |
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* @return bool |
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*/ |
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public function canMapClassToType(string $className): bool |
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{ |
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return isset($this->getMap()[$className]); |
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} |
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/** |
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* Maps a PHP fully qualified class name to a GraphQL type. |
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* |
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* @param string $className |
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* @return TypeInterface |
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* @throws CannotMapTypeException |
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*/ |
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public function mapClassToType(string $className): TypeInterface |
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{ |
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$map = $this->getMap()[$className]; |
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if (!isset($map[$className])) { |
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throw CannotMapTypeException::createForType($className); |
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} |
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return $this->container->get($map[$className]); |
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} |
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/** |
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* Returns true if this type mapper can map the $className FQCN to a GraphQL input type. |
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* |
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* @param string $className |
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* @return bool |
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*/ |
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public function canMapClassToInputType(string $className): bool |
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{ |
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return false; |
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} |
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/** |
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* Maps a PHP fully qualified class name to a GraphQL input type. |
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* |
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* @param string $className |
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* @return InputTypeInterface |
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* @throws CannotMapTypeException |
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*/ |
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public function mapClassToInputType(string $className): InputTypeInterface |
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{ |
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throw CannotMapTypeException::createForInputType($className); |
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} |
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} |
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thecodingmachine /
graphql-controllers
