introduce NoopProvider

Author: josef.wagner

features/graphql/query.feature

@@ -68,6 +68,7 @@ Feature: GraphQL query support
     And the JSON node "data.multiRelationsDummy.oneToManyRelations.edges[0].node.name" should match "#RelatedOneToManyDummy(1|3)2#"
     And the JSON node "data.multiRelationsDummy.oneToManyRelations.edges[2].node.name" should match "#RelatedOneToManyDummy(1|3)2#"
 
+  @createSchema
   Scenario: Retrieve embedded collections
     Given there are 2 multiRelationsDummy objects having each a manyToOneRelation, 2 manyToManyRelations, 3 oneToManyRelations and 4 embeddedRelations
     When I send the following GraphQL request:

src/GraphQl/Resolver/Factory/ResolverFactory.php

@@ -13,6 +13,7 @@
 
 namespace ApiPlatform\GraphQl\Resolver\Factory;
 
+use ApiPlatform\GraphQl\State\Provider\NoopProvider;
 use ApiPlatform\Metadata\GraphQl\Mutation;
 use ApiPlatform\Metadata\GraphQl\Operation;
 use ApiPlatform\Metadata\GraphQl\Query;
@@ -35,7 +36,7 @@ public function __invoke(?string $resourceClass = null, ?string $rootClass = nul
             // Data already fetched and normalized (field or nested resource)
             if ($body = $source[$info->fieldName] ?? null) {
                 // special treatment for nested resources without a resolver/provider
-                if ($operation instanceof Query && $operation->getNested() && !$operation->getResolver() && (!$operation->getProvider() || $operation->getProvider() === $resourceClass)) {
+                if ($operation instanceof Query && $operation->getNested() && !$operation->getResolver() && (!$operation->getProvider() || NoopProvider::class === $operation->getProvider())) {
                     return $this->resolve($source, $args, $info, $rootClass, $operation, new ArrayPaginator($body, 0, \count($body)));
                 }
 

src/GraphQl/Serializer/ItemNormalizer.php

@@ -13,6 +13,7 @@
 
 namespace ApiPlatform\GraphQl\Serializer;
 
+use ApiPlatform\GraphQl\State\Provider\NoopProvider;
 use ApiPlatform\Metadata\ApiProperty;
 use ApiPlatform\Metadata\GraphQl\Query;
 use ApiPlatform\Metadata\IdentifiersExtractorInterface;
@@ -113,7 +114,7 @@ protected function normalizeCollectionOfRelations(ApiProperty $propertyMetadata,
     {
         // check for nested collection
         $operation = $this->resourceMetadataCollectionFactory?->create($resourceClass)->getOperation(forceCollection: true, forceGraphQl: true);
-        if ($operation instanceof Query && $operation->getNested() && !$operation->getResolver() && (!$operation->getProvider() || $operation->getProvider() === $resourceClass)) {
+        if ($operation instanceof Query && $operation->getNested() && !$operation->getResolver() && (!$operation->getProvider() || NoopProvider::class === $operation->getProvider())) {
             return [...$attributeValue];
         }
 

src/GraphQl/State/Provider/NoopProvider.php

@@ -0,0 +1,28 @@
+<?php
+
+/*
+ * This file is part of the API Platform project.
+ *
+ * (c) Kévin Dunglas <[email protected]>
+ *
+ * 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\State\Provider;
+
+use ApiPlatform\Metadata\Operation;
+use ApiPlatform\State\ProviderInterface;
+
+/**
+ * No-op Provider for GraphQl.
+ */
+final class NoopProvider implements ProviderInterface
+{
+    public function provide(Operation $operation, array $uriVariables = [], array $context = []): object|array|null
+    {
+        return null;
+    }
+}

tests/Fixtures/TestBundle/Document/MultiRelationsNested.php

@@ -13,11 +13,12 @@
 
 namespace ApiPlatform\Tests\Fixtures\TestBundle\Document;
 
+use ApiPlatform\GraphQl\State\Provider\NoopProvider;
 use ApiPlatform\Metadata\ApiResource;
 use ApiPlatform\Metadata\GraphQl\QueryCollection;
 use Doctrine\ODM\MongoDB\Mapping\Annotations as ODM;
 
-#[ApiResource(graphQlOperations: [new QueryCollection(paginationEnabled: false, provider: self::class, nested: true)])]
+#[ApiResource(graphQlOperations: [new QueryCollection(paginationEnabled: false, provider: NoopProvider::class, nested: true)])]
 #[ODM\EmbeddedDocument]
 class MultiRelationsNested
 {

tests/Fixtures/TestBundle/Document/MultiRelationsNestedPaginated.php

@@ -13,11 +13,12 @@
 
 namespace ApiPlatform\Tests\Fixtures\TestBundle\Document;
 
+use ApiPlatform\GraphQl\State\Provider\NoopProvider;
 use ApiPlatform\Metadata\ApiResource;
 use ApiPlatform\Metadata\GraphQl\QueryCollection;
 use Doctrine\ODM\MongoDB\Mapping\Annotations as ODM;
 
-#[ApiResource(graphQlOperations: [new QueryCollection(provider: self::class, nested: true)])]
+#[ApiResource(graphQlOperations: [new QueryCollection(provider: NoopProvider::class, nested: true)])]
 #[ODM\EmbeddedDocument]
 class MultiRelationsNestedPaginated
 {