| Current File : //var/www/vinorea/vendor/api-platform/core/src/GraphQl/Resolver/Factory/ItemResolverFactory.php |
<?php
/*
* This file is part of the API Platform project.
*
* (c) Kévin Dunglas <dunglas@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
declare(strict_types=1);
namespace ApiPlatform\GraphQl\Resolver\Factory;
use ApiPlatform\GraphQl\Resolver\QueryItemResolverInterface;
use ApiPlatform\GraphQl\Resolver\Stage\ReadStageInterface;
use ApiPlatform\GraphQl\Resolver\Stage\SecurityPostDenormalizeStageInterface;
use ApiPlatform\GraphQl\Resolver\Stage\SecurityStageInterface;
use ApiPlatform\GraphQl\Resolver\Stage\SerializeStageInterface;
use ApiPlatform\Metadata\GraphQl\Operation;
use ApiPlatform\Metadata\GraphQl\Query;
use ApiPlatform\Util\ClassInfoTrait;
use ApiPlatform\Util\CloneTrait;
use GraphQL\Type\Definition\ResolveInfo;
use Psr\Container\ContainerInterface;
/**
* Creates a function retrieving an item to resolve a GraphQL query.
*
* @author Alan Poulain <contact@alanpoulain.eu>
* @author Kévin Dunglas <dunglas@gmail.com>
* @author Vincent Chalamon <vincentchalamon@gmail.com>
*/
final class ItemResolverFactory implements ResolverFactoryInterface
{
use ClassInfoTrait;
use CloneTrait;
private $readStage;
private $securityStage;
private $securityPostDenormalizeStage;
private $serializeStage;
private $queryResolverLocator;
public function __construct(ReadStageInterface $readStage, SecurityStageInterface $securityStage, SecurityPostDenormalizeStageInterface $securityPostDenormalizeStage, SerializeStageInterface $serializeStage, ContainerInterface $queryResolverLocator)
{
$this->readStage = $readStage;
$this->securityStage = $securityStage;
$this->securityPostDenormalizeStage = $securityPostDenormalizeStage;
$this->serializeStage = $serializeStage;
$this->queryResolverLocator = $queryResolverLocator;
}
public function __invoke(?string $resourceClass = null, ?string $rootClass = null, ?Operation $operation = null): callable
{
return function (?array $source, array $args, $context, ResolveInfo $info) use ($resourceClass, $rootClass, $operation) {
// Data already fetched and normalized (field or nested resource)
if ($source && \array_key_exists($info->fieldName, $source)) {
return $source[$info->fieldName];
}
$resolverContext = ['source' => $source, 'args' => $args, 'info' => $info, 'is_collection' => false, 'is_mutation' => false, 'is_subscription' => false];
if (!$operation) {
$operation = new Query();
}
$item = ($this->readStage)($resourceClass, $rootClass, $operation, $resolverContext);
if (null !== $item && !\is_object($item)) {
throw new \LogicException('Item from read stage should be a nullable object.');
}
// The item retrieved can be of another type when using an identifier (see Relay Nodes at query.feature:23)
$resourceClass = $this->getResourceClass($item, $resourceClass);
$queryResolverId = $operation->getResolver();
if (null !== $queryResolverId) {
/** @var QueryItemResolverInterface $queryResolver */
$queryResolver = $this->queryResolverLocator->get($queryResolverId);
$item = $queryResolver($item, $resolverContext);
$resourceClass = $this->getResourceClass($item, $resourceClass, sprintf('Custom query resolver "%s"', $queryResolverId).' has to return an item of class %s but returned an item of class %s.');
}
($this->securityStage)($resourceClass, $operation, $resolverContext + [
'extra_variables' => [
'object' => $item,
],
]);
($this->securityPostDenormalizeStage)($resourceClass, $operation, $resolverContext + [
'extra_variables' => [
'object' => $item,
'previous_object' => $this->clone($item),
],
]);
return ($this->serializeStage)($item, $resourceClass, $operation, $resolverContext);
};
}
/**
* @param object|null $item
*
* @throws \UnexpectedValueException
*/
private function getResourceClass($item, ?string $resourceClass, string $errorMessage = 'Resolver only handles items of class %s but retrieved item is of class %s.'): string
{
if (null === $item) {
if (null === $resourceClass) {
throw new \UnexpectedValueException('Resource class cannot be determined.');
}
return $resourceClass;
}
$itemClass = $this->getObjectClass($item);
if (null === $resourceClass) {
return $itemClass;
}
if ($resourceClass !== $itemClass) {
throw new \UnexpectedValueException(sprintf($errorMessage, (new \ReflectionClass($resourceClass))->getShortName(), (new \ReflectionClass($itemClass))->getShortName()));
}
return $resourceClass;
}
}