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<?php |
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/******************************************************************************* |
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* This file is part of the GraphQL Bundle package. |
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* |
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* (c) YnloUltratech <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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******************************************************************************/ |
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namespace Ynlo\GraphQLBundle\Resolver; |
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use Doctrine\Common\Collections\Collection; |
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use GraphQL\Type\Definition\ResolveInfo; |
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use Symfony\Component\DependencyInjection\ContainerAwareInterface; |
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use Symfony\Component\DependencyInjection\ContainerAwareTrait; |
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use Symfony\Component\DependencyInjection\ContainerInterface; |
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use Symfony\Component\EventDispatcher\EventDispatcherInterface; |
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use Symfony\Component\PropertyAccess\PropertyAccessor; |
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use Ynlo\GraphQLBundle\Definition\QueryDefinition; |
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use Ynlo\GraphQLBundle\Events\GraphQLEvents; |
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use Ynlo\GraphQLBundle\Events\GraphQLFieldEvent; |
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use Ynlo\GraphQLBundle\Events\GraphQLFieldInfo; |
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use Ynlo\GraphQLBundle\Model\NodeInterface; |
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use Ynlo\GraphQLBundle\Type\Types; |
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use Ynlo\GraphQLBundle\Util\IDEncoder; |
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/** |
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* Default resolver for all object fields |
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*/ |
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class ObjectFieldResolver implements ContainerAwareInterface |
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{ |
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use ContainerAwareTrait; |
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/** |
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* ObjectFieldResolver constructor. |
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* |
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* @param ContainerInterface $container |
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*/ |
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public function __construct(ContainerInterface $container) |
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{ |
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$this->container = $container; |
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} |
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/** |
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* @param mixed $root |
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* @param array $args |
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* @param FieldExecutionContext $context |
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* @param ResolveInfo $info |
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* |
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* @return mixed|null|string |
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* |
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* @throws \Exception |
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*/ |
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public function __invoke($root, array $args, FieldExecutionContext $context, ResolveInfo $info) |
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{ |
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$value = null; |
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$fieldDefinition = $context->getDefinition()->getField($info->fieldName); |
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$eventDispatcher = $this->container->get(EventDispatcherInterface::class); |
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$fieldInfo = new GraphQLFieldInfo($context->getDefinition(), $fieldDefinition, $info); |
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$event = new GraphQLFieldEvent( |
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$fieldInfo, |
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$root, |
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$args, |
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$context |
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); |
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$eventDispatcher->dispatch(GraphQLEvents::PRE_READ_FIELD, $event); |
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if ($event->isPropagationStopped() || $event->getValue()) { |
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$eventDispatcher->dispatch(GraphQLEvents::POST_READ_FIELD, $event); |
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return $event->getValue(); |
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} |
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//when use external resolver or use a object method with arguments |
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if (($resolver = $fieldDefinition->getResolver()) || $fieldDefinition->getArguments()) { |
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$queryDefinition = new QueryDefinition(); |
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$queryDefinition->setName($fieldDefinition->getName()); |
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$queryDefinition->setType($fieldDefinition->getType()); |
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$queryDefinition->setNode($fieldDefinition->getNode()); |
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$queryDefinition->setArguments($fieldDefinition->getArguments()); |
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$queryDefinition->setList($fieldDefinition->isList()); |
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$queryDefinition->setMetas($fieldDefinition->getMetas()); |
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if ($resolver) { |
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$queryDefinition->setResolver($resolver); |
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} elseif ($fieldDefinition->getOriginType() === \ReflectionMethod::class) { |
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$queryDefinition->setResolver($fieldDefinition->getOriginName()); |
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} |
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$resolver = new ResolverExecutor($this->container, $context->getQueryContext()->getEndpoint(), $queryDefinition); |
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$value = $resolver($root, $args, $context, $info); |
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} else { |
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$accessor = new PropertyAccessor(true); |
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$originName = $fieldDefinition->getOriginName() ?: $fieldDefinition->getName(); |
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$value = $accessor->getValue($root, $originName); |
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} |
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if (null !== $value && Types::ID === $fieldDefinition->getType() && $root instanceof NodeInterface) { |
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//ID are formed with base64 representation of the Types and real database ID |
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//in order to create a unique and global identifier for each resource |
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//@see https://facebook.github.io/relay/docs/graphql-object-identification.html |
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$value = IDEncoder::encode($root); |
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} |
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if ($value instanceof Collection) { |
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$value = $value->toArray(); |
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} |
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$event->setValue($value); |
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$eventDispatcher->dispatch(GraphQLEvents::POST_READ_FIELD, $event); |
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return $event->getValue(); |
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} |
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} |
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ynloultratech /
graphql-bundle
