Move the blob dummy entity into the blob subdir as well

and adjust the doctrine config, since that needs at least one "entity"
to work, even if it's not used.

and port to PHP attributes

src/Blob/Dummy.php

@@ -0,0 +1,79 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Dbp\Relay\CabinetBundle\Blob;
+
+use ApiPlatform\Metadata\ApiResource;
+use ApiPlatform\Metadata\Get;
+
+#[ApiResource(
+    shortName: 'cabinet',
+    types: ['https://schema.org/DigitalDocument'],
+    operations: [
+        new Get(
+            uriTemplate: '/signature',
+            controller: BlobSignatureController::class,
+            openapiContext: [
+                'tags' => ['Cabinet'],
+                'summary' => 'Returns a signed blob url which can be used to do operations on blob',
+                'parameters' => [
+                    [
+                        'name' => 'method',
+                        'in' => 'query',
+                        'description' => 'Blob method which will be used',
+                        'type' => 'string',
+                        'required' => true,
+                        'example' => 'GET',
+                    ],
+                    [
+                        'name' => 'type',
+                        'in' => 'query',
+                        'description' => 'Blob type which will be stored',
+                        'type' => 'string',
+                        'required' => false,
+                        'example' => '',
+                    ],
+                    [
+                        'name' => 'prefix',
+                        'in' => 'query',
+                        'description' => 'Prefix to be stored for the blob resource',
+                        'type' => 'string',
+                        'required' => false,
+                        'example' => '',
+                    ],
+                    [
+                        'name' => 'identifier',
+                        'in' => 'query',
+                        'description' => 'Identifier of the blob resource',
+                        'type' => 'string',
+                        'required' => false,
+                        'example' => '',
+                    ],
+                    [
+                        'name' => 'includeData',
+                        'in' => 'query',
+                        'description' => '1 if GET request should return base64 encoded filedata, not given otherwise',
+                        'type' => 'string',
+                        'required' => false,
+                        'example' => '',
+                    ],
+                ],
+            ],
+            normalizationContext: [
+                'groups' => ['Cabinet:output'],
+                'jsonld_embed_context' => true,
+            ],
+            read: false,
+            name: 'signature'
+        ),
+    ],
+    routePrefix: '/cabinet',
+    normalizationContext: [
+        'groups' => ['Cabinet:output'],
+        'jsonld_embed_context' => true,
+    ]
+)]
+class Dummy
+{
+}

src/DependencyInjection/DbpRelayCabinetExtension.php

@@ -20,6 +20,8 @@ class DbpRelayCabinetExtension extends ConfigurableExtension implements PrependE
 
     public function loadInternal(array $mergedConfig, ContainerBuilder $container): void
     {
+        $this->addResourceClassDirectory($container, __DIR__.'/../Blob');
+
         $pathsToHide = [
             '/cabinet/typesense',
         ];
@@ -73,8 +75,8 @@ public function prepend(ContainerBuilder $container): void
                         'mappings' => [
                             'dbp_relay_cabinet' => [
                                 'type' => 'attribute',
-                                'dir' => __DIR__.'/../Entity',
-                                'prefix' => 'Dbp\Relay\CabinetBundle\Entity',
+                                'dir' => __DIR__.'/../Blob',
+                                'prefix' => 'Dbp\Relay\CabinetBundle\Blob',
                             ],
                         ],
                     ],