From 6d3432a8ab6aec013366893c1b46b787af67a4a1 Mon Sep 17 00:00:00 2001
From: Stefan Korn <drupal@stefan-korn.de>
Date: Fri, 12 Jun 2026 15:18:37 +0200
Subject: [PATCH] #4732 - Limit the amount of items for metastore schema API
 request

---
 modules/dkan_metastore/docs/openapi_spec.json | 14 +++++++++++++-
 .../src/Controller/MetastoreController.php    | 19 ++++++++++++++++++-
 2 files changed, 31 insertions(+), 2 deletions(-)

diff --git a/modules/dkan_metastore/docs/openapi_spec.json b/modules/dkan_metastore/docs/openapi_spec.json
index 5a1e7996f5..9442f74c6c 100644
--- a/modules/dkan_metastore/docs/openapi_spec.json
+++ b/modules/dkan_metastore/docs/openapi_spec.json
@@ -22,6 +22,17 @@
                 "required": true,
                 "allowEmptyValue": false,
                 "examples": []
+            },
+            "limit": {
+                "name": "limit",
+                "in": "query",
+                "description": "Limit the output of items, mainly for testing purposes.",
+                "schema": {
+                    "type": "integer",
+                    "default": 10
+                },
+                "style": "form",
+                "allowEmptyValue": true
             }
         },
         "responses": {
@@ -203,7 +214,8 @@
                 "tags": [ "Metastore" ],
                 "parameters": [
                     { "$ref": "#/components/parameters/schemaId" },
-                    { "$ref": "#/components/parameters/showReferenceIds" }
+                    { "$ref": "#/components/parameters/showReferenceIds" },
+                    { "$ref": "#/components/parameters/limit" }
 
                 ],
                 "responses": {
diff --git a/modules/dkan_metastore/src/Controller/MetastoreController.php b/modules/dkan_metastore/src/Controller/MetastoreController.php
index 0103d89235..b3a2aac822 100644
--- a/modules/dkan_metastore/src/Controller/MetastoreController.php
+++ b/modules/dkan_metastore/src/Controller/MetastoreController.php
@@ -102,7 +102,7 @@ public function getAll(string $schema_id, Request $request) {
         ? $this->service->swapReferences($object)
         : $this->service->removeReferences($object);
       return (object) $modified_object->get('$');
-    }, $this->service->getAll($schema_id));
+    }, $this->service->getAll($schema_id, $this->wantLimitedAmountOfItems($request) ? 0 : NULL, $this->wantLimitedAmountOfItems($request) ?? NULL));
 
     $output = array_values($output);
     return $this->apiResponse->cachedJsonResponse($output, 200, [$schema_id], $request->query);
@@ -159,6 +159,23 @@ private function wantObjectWithReferences(Request $request) {
     return TRUE;
   }
 
+  /**
+   * Determine if we want to limit the number of items in the response.
+   *
+   * @param \Symfony\Component\HttpFoundation\Request $request
+   *   The request object.
+   *
+   * @return ?integer
+   *   number of items or NULL if we want no limit.
+   */
+  private function wantLimitedAmountOfItems(Request $request) {
+    $param = $request->get('limit', FALSE);
+    if ($param === FALSE) {
+      return NULL;
+    }
+    return (int) $param;
+  }
+
   /**
    * Implements POST method.
    *