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<?php |
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/** |
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* |
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* part-db version 0.1 |
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* Copyright (C) 2005 Christoph Lechner |
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* http://www.cl-projects.de/ |
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* |
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* part-db version 0.2+ |
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* Copyright (C) 2009 K. Jacobs and others (see authors.php) |
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* http://code.google.com/p/part-db/ |
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* |
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* Part-DB Version 0.4+ |
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* Copyright (C) 2016 - 2019 Jan Böhmer |
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* 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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*/ |
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namespace App\Services; |
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use App\Entity\StructuralDBElement; |
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use Doctrine\ORM\EntityManagerInterface; |
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class StructuralElementRecursionHelper |
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{ |
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protected $em; |
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public function __construct(EntityManagerInterface $em) |
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{ |
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$this->em = $em; |
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} |
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/** |
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* Executes an function (callable) recursivly for $element and every of its children. |
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* |
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* @param StructuralDBElement $element The element on which the func should be executed |
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* @param callable $func The function which should be executed for each element. |
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* $func has the signature function(StructuralDBElement $element) : void |
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* @param int $max_depth The maximum depth for which should be recursivly called. So if this is set to 5, after the |
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* 5th level the execution is stopped. |
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* @param bool $call_from_bottom If set to true the bottom elements (elements with high level) will be called first. |
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* Set to false if you want to call the top elements first. |
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*/ |
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public function execute(StructuralDBElement $element, callable $func, int $max_depth = -1, $call_from_bottom = true) : void |
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{ |
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//Cancel if we reached our maximal allowed level. Must be zero because -1 is infinity levels |
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if ($max_depth == 0) { |
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return; |
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} |
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//Get children of the current class: |
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$children = $element->getChildren(); |
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//If we should call from top we execute the func here. |
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if (!$call_from_bottom) { |
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$func($element); |
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} |
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foreach ($children as $child) { |
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$this->execute($child, $func, $max_depth - 1); |
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} |
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//Otherwise we call it here |
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if ($call_from_bottom) { |
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$func($element); |
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} |
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} |
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/** |
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* Deletes the $element and all its subelements recursivly. |
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* @param StructuralDBElement $element The element which should be deleted. |
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* @param bool $flush When set to true the changes will also be flushed to DB. Set to false if you want to flush |
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* later. |
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*/ |
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public function delete(StructuralDBElement $element, bool $flush = true) : void |
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{ |
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$em = $this->em; |
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$this->execute($element, static function(StructuralDBElement $element) use ($em) { |
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$em->remove($element); |
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}); |
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if($flush) { |
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$em->flush(); |
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} |
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} |
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} |
Part-DB /
Part-DB-symfony
