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<?php |
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/** |
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* This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony). |
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* |
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* Copyright (C) 2019 Jan Böhmer (https://github.com/jbtronics) |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License |
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* as published by the Free Software Foundation; either version 2 |
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* of the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA |
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*/ |
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namespace App\Services\Trees; |
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use App\Entity\Base\DBElement; |
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use App\Entity\Base\NamedDBElement; |
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use App\Entity\Base\StructuralDBElement; |
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use App\Helpers\Trees\TreeViewNode; |
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use App\Repository\StructuralDBElementRepository; |
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use App\Services\EntityURLGenerator; |
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use App\Services\UserCacheKeyGenerator; |
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use Doctrine\ORM\EntityManagerInterface; |
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use Symfony\Contracts\Cache\ItemInterface; |
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use Symfony\Contracts\Cache\TagAwareCacheInterface; |
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use Symfony\Contracts\Translation\TranslatorInterface; |
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/** |
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* This service gives you a flat list containing all structured entities in the order of the structure. |
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*/ |
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class NodesListBuilder |
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{ |
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protected $em; |
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protected $cache; |
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protected $keyGenerator; |
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public function __construct( EntityManagerInterface $em, TagAwareCacheInterface $treeCache, UserCacheKeyGenerator $keyGenerator) |
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{ |
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$this->em = $em; |
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$this->keyGenerator = $keyGenerator; |
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$this->cache = $treeCache; |
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} |
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/** |
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* Gets a flattened hierachical tree. Useful for generating option lists. |
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* In difference to the Repository Function, the results here are cached. |
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* |
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* @param string $class_name The class name of the entity you want to retrieve. |
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* @param StructuralDBElement|null $parent This entity will be used as root element. Set to null, to use global root |
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* |
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* @return StructuralDBElement[] A flattened list containing the tree elements. |
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*/ |
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public function typeToNodesList(string $class_name, ?StructuralDBElement $parent = null): array |
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{ |
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$parent_id = null != $parent ? $parent->getID() : '0'; |
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// Backslashes are not allowed in cache keys |
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$secure_class_name = str_replace('\\', '_', $class_name); |
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$key = 'list_'.$this->keyGenerator->generateKey().'_'.$secure_class_name.$parent_id; |
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$ret = $this->cache->get($key, function (ItemInterface $item) use ($class_name, $parent, $secure_class_name) { |
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// Invalidate when groups, a element with the class or the user changes |
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$item->tag(['groups', 'tree_list', $this->keyGenerator->generateKey(), $secure_class_name]); |
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/** |
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* @var StructuralDBElementRepository |
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*/ |
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$repo = $this->em->getRepository($class_name); |
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return $repo->toNodesList($parent); |
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}); |
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return $ret; |
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} |
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} |
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Part-DB /
Part-DB-symfony
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