Added Doctrine Entities.

src/Entity/Manufacturer.php

@@ -0,0 +1,47 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: janhb
+ * Date: 23.02.2019
+ * Time: 19:11
+ */
+
+namespace App\Entity;
+
+use Doctrine\ORM\Mapping as ORM;
+
+/**
+ * Class Manufacturer
+ * @package App\Entity
+ *
+ * @ORM\Entity()
+ * @ORM\Table("manufacturers")
+ */
+class Manufacturer extends Company
+{
+    /**
+     * @ORM\OneToMany(targetEntity="Manufacturer", mappedBy="parent")
+     */
+    protected $children;
+
+    /**
+     * @ORM\ManyToOne(targetEntity="Manufacturer", inversedBy="children")
+     * @ORM\JoinColumn(name="parent_id", referencedColumnName="id")
+     */
+    protected $parent;
+
+    /**
+     * @ORM\OneToMany(targetEntity="Part", mappedBy="manufacturer")
+     */
+    protected $parts;
+
+    /**
+     * Returns the ID as an string, defined by the element class.
+     * This should have a form like P000014, for a part with ID 14.
+     * @return string The ID as a string;
+     */
+    public function getIDString(): string
+    {
+        return 'M' . sprintf('%06d', $this->getID());
+    }
+}