MetaData.php

<?php
/**
 * This file is part of DoctrineRestDriver.
 *
 * DoctrineRestDriver 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 3 of the License, or
 * (at your option) any later version.
 *
 * DoctrineRestDriver 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 DoctrineRestDriver.  If not, see <http://www.gnu.org/licenses/>.
 */

namespace Circle\DoctrineRestDriver;


use Doctrine\Bundle\DoctrineBundle\Repository\ServiceEntityRepositoryInterface;
use Doctrine\Persistence\ObjectManager;

/**
 * Provider for doctrine meta data
 *
 * @author    Tobias Hauck <tobias@circle.ai>
 * @copyright 2015 TeeAge-Beatz UG
 */
class MetaData {

    /**
     * @var ObjectManager
     */
    private $em;

    public function getEm(): ObjectManager|array
    {
        return $this->em;
    }


    /**
     * MetaData constructor
     */
    public function __construct() {
        $backtrace = debug_backtrace();

        $this->em = array_filter($backtrace, function($trace) {
            return isset($trace['object']) && $trace['object'] instanceof ObjectManager;
        });

        if (count($this->em) == 0)
        {

            $ems =  array_filter($backtrace, function($trace) {
                return isset($trace['object']) && $trace['object'] instanceof ServiceEntityRepositoryInterface;
            });

            if (count($ems) > 0) {
                $firstEntityRepo = array_shift($ems) ;

                if (isset($firstEntityRepo['object'])) {
                    $firstEntityRepo = $firstEntityRepo['object'];
                    /** @var ServiceEntityRepository $firstEntityRepo */
                    if ($firstEntityRepo !== null) {
                        $qb = $firstEntityRepo->createQueryBuilder(''); //
                        $this->em = $qb->getEntityManager();
                    }
                }

            }

        }
    }

    /**
     * returns all namespaces of managed entities
     *
     * @return array
     */
    public function getEntityNamespaces() {
        // @codeCoverageIgnoreStart
        return array_reduce($this->get(), function($carry, $item) {
            $carry[$item->table['name']] = $item->getName();
            return $carry;
        }, []);
        // @codeCoverageIgnoreEnd
    }

    /**
     * returns all entity meta data if existing
     *
     * @return array
     */
    public function get() {
        if ($this->em instanceof ObjectManager) {
            return $this->em->getMetaDataFactory()->getAllMetaData();
        }

        return empty($this->em) ? [] : array_pop($this->em)['object']->getMetaDataFactory()->getAllMetaData();
    }
}