TYPO3 v15 dev-main snapshot ()

2026-08-10 22:31:09 +02:00
commit af8cc155b5
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+<?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\Core\DataHandling\Model;
+
+/**
+ * An EntityPointerLink is used to connect EntityPointer instances
+ */
+class EntityPointerLink
+{
+    /**
+     * @var EntityPointer
+     */
+    protected $subject;
+
+    /**
+     * @var EntityPointerLink|null
+     */
+    protected $ancestor;
+
+    public function __construct(EntityPointer $subject)
+    {
+        $this->subject = $subject;
+    }
+
+    public function getSubject(): EntityPointer
+    {
+        return $this->subject;
+    }
+
+    public function getHead(): EntityPointerLink
+    {
+        $head = $this;
+        while ($head->ancestor !== null) {
+            $head = $head->ancestor;
+        }
+        return $head;
+    }
+
+    public function getAncestor(): ?EntityPointerLink
+    {
+        return $this->ancestor;
+    }
+
+    public function withAncestor(EntityPointerLink $ancestor): self
+    {
+        if ($this->ancestor === $ancestor) {
+            return $this;
+        }
+        $target = clone $this;
+        $target->ancestor = $ancestor;
+        return $target;
+    }
+}