B2B-2464: Improve category children loading

- Add exclude list for buildOutputDataArray

Author: danmooney2

app/code/Magento/CatalogGraphQl/Model/Category/Hydrator.php

@@ -57,13 +57,19 @@ public function __construct(
      */
     public function hydrateCategory(Category $category, $basicFieldsOnly = false) : array
     {
-        if (!$basicFieldsOnly) {
-            // initialize custom attributes (to be consequently included in subsequent getData call below)
-            $category->getCustomAttributes();
+        if ($basicFieldsOnly) {
+            $categoryData = $category->getData();
+        } else {
+            $categoryData = $this->dataObjectProcessor->buildOutputDataArray(
+                $category,
+                CategoryInterface::class,
+                [
+                    'getChildren',
+                    'getExtensionAttributes',
+                ]
+            );
         }
 
-        $categoryData = $category->getData();
-
         $categoryData['id'] = $category->getId();
         $categoryData['uid'] = $this->uidEncoder->encode((string) $category->getId());
         $categoryData['children'] = [];

lib/internal/Magento/Framework/Reflection/DataObjectProcessor.php

@@ -75,16 +75,21 @@ public function __construct(
      *
      * @param mixed $dataObject
      * @param string $dataObjectType
+     * @param array $excludedMethods - list of methods to exclude from being called
      * @return array
      * @SuppressWarnings(PHPMD.CyclomaticComplexity)
      * @SuppressWarnings(PHPMD.NPathComplexity)
      */
-    public function buildOutputDataArray($dataObject, $dataObjectType)
+    public function buildOutputDataArray($dataObject, $dataObjectType, array $excludedMethods = [])
     {
         $methods = $this->methodsMapProcessor->getMethodsMap($dataObjectType);
         $outputData = [];
 
         foreach (array_keys($methods) as $methodName) {
+            if (in_array($methodName, $excludedMethods)) {
+                continue;
+            }
+
             if (!$this->methodsMapProcessor->isMethodValidForDataField($dataObjectType, $methodName)) {
                 continue;
             }