Renamed the base DBElement classes to AbstractDBElement to comply with symfony recommendations.

src/Entity/Base/AbstractPartsContainingDBElement.php

@@ -0,0 +1,58 @@
+<?php
+/**
+ * This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
+ *
+ * Copyright (C) 2019 Jan Böhmer (https://github.com/jbtronics)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
+ */
+
+declare(strict_types=1);
+
+namespace App\Entity\Base;
+
+use App\Entity\Parts\Part;
+use Doctrine\Common\Collections\ArrayCollection;
+use Doctrine\Common\Collections\Collection;
+use Doctrine\ORM\Mapping as ORM;
+
+/**
+ * Class PartsContainingDBElement.
+ *
+ * @ORM\MappedSuperclass()
+ */
+abstract class AbstractPartsContainingDBElement extends AbstractStructuralDBElement
+{
+    /**
+     * @var Part[]|Collection
+     */
+    protected $parts;
+
+    public function __construct()
+    {
+        parent::__construct();
+        $this->parts = new ArrayCollection();
+    }
+
+    /**
+     * Returns the parts associated with this element.
+     *
+     * @return Collection|Part[]
+     */
+    public function getParts(): Collection
+    {
+        return $this->parts;
+    }
+}