Make LabelGenerator services final.

src/Services/LabelSystem/Barcodes/BarcodeContentGenerator.php

@@ -30,9 +30,9 @@ use App\Entity\Parts\Supplier;
 use App\Exceptions\EntityNotSupportedException;
 use Symfony\Component\Routing\Generator\UrlGeneratorInterface;
 
-class BarcodeContentGenerator
+final class BarcodeContentGenerator
 {
-    protected $urlGenerator;
+    private $urlGenerator;
 
     public const PREFIX_MAP = [
         Part::class => 'P',
@@ -40,7 +40,7 @@ class BarcodeContentGenerator
         Storelocation::class => 'S'
     ];
 
-    protected const URL_MAP = [
+    private const URL_MAP = [
         Part::class => 'part',
         PartLot::class => 'lot',
         Storelocation::class => 'location',
@@ -80,7 +80,7 @@ class BarcodeContentGenerator
         return $prefix  . $id;
     }
 
-    protected function classToString(array $map, object $target): string
+    private function classToString(array $map, object $target): string
     {
         $class = get_class($target);
         if (isset($map[$class])) {

src/Services/LabelSystem/Barcodes/BarcodeExampleElementsGenerator.php

@@ -0,0 +1,118 @@
+<?php
+/**
+ * This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
+ *
+ * Copyright (C) 2019 - 2020 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 Affero General Public License as published
+ * by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+namespace App\Services\LabelSystem\Barcodes;
+
+use App\Entity\Base\AbstractStructuralDBElement;
+use App\Entity\Parts\Category;
+use App\Entity\Parts\Footprint;
+use App\Entity\Parts\Manufacturer;
+use App\Entity\Parts\Part;
+use App\Entity\Parts\PartLot;
+use App\Entity\Parts\Storelocation;
+
+final class BarcodeExampleElementsGenerator
+{
+    public function getElement(string $type): object
+    {
+        switch ($type) {
+            case 'part':
+                return $this->getExamplePart();
+            case 'part_lot':
+                return $this->getExamplePartLot();
+            case 'storelocation':
+                return $this->getStorelocation();
+            default:
+                throw new \InvalidArgumentException('Unknown $type.');
+        }
+    }
+
+    private function getStorelocation(): Storelocation
+    {
+        $storelocation = new Storelocation();
+        $storelocation->setName('Location 1');
+        $storelocation->setComment('Example comment');
+        $storelocation->updatedTimestamps();
+
+        $parent = new Storelocation();
+        $parent->setName('Parent');
+
+        $storelocation->setParent($parent);
+
+        return $storelocation;
+    }
+
+    private function getStructuralData(string $class): AbstractStructuralDBElement
+    {
+        if (!is_a($class, AbstractStructuralDBElement::class, true)) {
+           throw new \InvalidArgumentException('$class must be an child of AbstractStructuralDBElement');
+        }
+
+        /** @var AbstractStructuralDBElement $parent */
+        $parent = new $class();
+        $parent->setName('Example');
+
+        /** @var AbstractStructuralDBElement $child */
+        $child = new $class();
+        $child->setName((new \ReflectionClass($class))->getShortName());
+        $child->setParent($parent);
+
+        return $child;
+    }
+
+    public function getExamplePart(): Part
+    {
+        $part = new Part();
+        $part->setName('Example Part');
+        $part->setDescription('<b>Part</b> description');
+        $part->setComment('<i>Part</i> comment');
+
+        $part->setCategory($this->getStructuralData(Category::class));
+        $part->setFootprint($this->getStructuralData(Footprint::class));
+        $part->setManufacturer($this->getStructuralData(Manufacturer::class));
+
+        $part->setMass(123.4);
+        $part->setManufacturerProductNumber('CUSTOM MPN');
+        $part->setTags('Tag1, Tag2, Tag3');
+        $part->setManufacturingStatus('active');
+        $part->updatedTimestamps();
+
+        $part->setFavorite(true);
+        $part->setMinAmount(100);
+        $part->setNeedsReview(true);
+
+
+        return $part;
+    }
+
+    public function getExamplePartLot(): PartLot
+    {
+        $lot = new PartLot();
+        $lot->setPart($this->getExamplePart());
+
+        $lot->setDescription('Example Lot');
+        $lot->setComment('Lot comment');
+        $lot->setExpirationDate(new \DateTime('+1 days'));
+        $lot->setStorageLocation($this->getStructuralData(Storelocation::class));
+        $lot->setAmount(123);
+
+        return $lot;
+    }
+}

src/Services/LabelSystem/Barcodes/BarcodeNormalizer.php

@@ -21,9 +21,9 @@
 namespace App\Services\LabelSystem\Barcodes;
 
 
-class BarcodeNormalizer
+final class BarcodeNormalizer
 {
-    protected const PREFIX_TYPE_MAP = [
+    private const PREFIX_TYPE_MAP = [
         'L' => 'lot',
         'P' => 'part',
         'S' => 'location',