Merge pull request #14 from TomHAnderson/feature/introspection

Use default field resolver if hydrator does not exist

src/Field/FieldResolver.php

@@ -8,6 +8,7 @@
 use Zend\Hydrator\HydratorPluginManager;
 use Doctrine\Common\Util\ClassUtils;
 use GraphQL\Type\Definition\ResolveInfo;
+use GraphQL\Executor\Executor;
 use ZF\Doctrine\GraphQL\Context;
 use ZF\Doctrine\GraphQL\Hydrator\HydratorExtractToolInterface;
 
@@ -17,6 +18,7 @@
 class FieldResolver
 {
     private $hydratorExtractTool;
+    private $hydratorManager;
 
     /**
      * Cache all hydrator extract operations based on spl object hash
@@ -25,9 +27,12 @@ class FieldResolver
      */
     private $extractValues = [];
 
-    public function __construct(HydratorExtractToolInterface $hydratorExtractTool)
-    {
+    public function __construct(
+        HydratorExtractToolInterface $hydratorExtractTool,
+        HydratorPluginManager $hydratorManager
+    ) {
         $this->hydratorExtractTool = $hydratorExtractTool;
+        $this->hydratorManager = $hydratorManager;
     }
 
     public function __invoke($source, $args, Context $context, ResolveInfo $info)
@@ -40,6 +45,11 @@ public function __invoke($source, $args, Context $context, ResolveInfo $info)
         $splObjectHash = spl_object_hash($source);
         $hydratorAlias = 'ZF\\Doctrine\\GraphQL\\Hydrator\\' . str_replace('\\', '_', $entityClassName);
 
+        // If the hydrator does not exist pass handling to default Executor field resolver
+        if (! $this->hydratorManager->has($hydratorAlias)) {
+            return Executor::defaultFieldResolver($source, $args, $context, $info);
+        }
+
         /**
          * For disabled hydrator cache store only last hydrator result and reuse for consecutive calls
          * then drop the cache if it doesn't hit.

src/Field/FieldResolverFactory.php

@@ -12,7 +12,8 @@ public function __invoke(
         array $options = null
     ) {
         $hydratorExtractTool = $container->get('ZF\\Doctrine\\GraphQL\\Hydrator\\HydratorExtractTool');
+        $hydratorManager = $container->get('HydratorManager');
 
-        return new FieldResolver($hydratorExtractTool);
+        return new FieldResolver($hydratorExtractTool, $hydratorManager);
     }
 }