TYPO3 v15 dev-main snapshot ()

Classes/Persistence/ClassesConfiguration.php

@@ -0,0 +1,71 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Extbase\Persistence;
+
+class ClassesConfiguration
+{
+    /**
+     * @var array
+     */
+    private $configuration;
+
+    public function __construct(array $configuration)
+    {
+        $this->configuration = $configuration;
+    }
+
+    public function hasClass(string $className): bool
+    {
+        return array_key_exists($className, $this->configuration);
+    }
+
+    public function getConfigurationFor(string $className): ?array
+    {
+        return $this->configuration[$className] ?? null;
+    }
+
+    /**
+     * Resolves all subclasses for the given set of (sub-)classes.
+     * The whole classes configuration is used to determine all subclasses recursively.
+     *
+     * @return array A numeric array that contains all available subclasses-strings as values.
+     */
+    public function getSubClasses(string $className): array
+    {
+        return $this->resolveSubClassesRecursive($className);
+    }
+
+    private function resolveSubClassesRecursive(string $className, array $subClasses = []): array
+    {
+        foreach ($this->configuration[$className]['subclasses'] ?? [] as $subclass) {
+            if (in_array($subclass, $subClasses, true)) {
+                continue;
+            }
+
+            $subClasses[] = $subclass;
+            $subClasses = $this->resolveSubClassesRecursive($subclass, $subClasses);
+        }
+
+        return $subClasses;
+    }
+
+    public function getConfiguration(): array
+    {
+        return $this->configuration;
+    }
+}