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Current File : /home/emtnaeewxm/www/vendor/doctrine/orm/lib/Doctrine/ORM/Tools/ResolveTargetEntityListener.php

<?php
/*
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * This software consists of voluntary contributions made by many individuals
 * and is licensed under the MIT license. For more information, see
 * <http://www.doctrine-project.org>.
 */

namespace Doctrine\ORM\Tools;

use Doctrine\ORM\Event\LoadClassMetadataEventArgs;
use Doctrine\ORM\Event\OnClassMetadataNotFoundEventArgs;
use Doctrine\ORM\Mapping\ClassMetadata;
use Doctrine\Common\EventSubscriber;
use Doctrine\ORM\Events;

/**
 * ResolveTargetEntityListener
 *
 * Mechanism to overwrite interfaces or classes specified as association
 * targets.
 *
 * @author Benjamin Eberlei <kontakt@beberlei.de>
 * @since 2.2
 */
class ResolveTargetEntityListener implements EventSubscriber
{
    /**
     * @var array[] indexed by original entity name
     */
    private $resolveTargetEntities = array();

    /**
     * {@inheritDoc}
     */
    public function getSubscribedEvents()
    {
        return array(
            Events::loadClassMetadata,
            Events::onClassMetadataNotFound
        );
    }

    /**
     * Adds a target-entity class name to resolve to a new class name.
     *
     * @param string $originalEntity
     * @param string $newEntity
     * @param array  $mapping
     *
     * @return void
     */
    public function addResolveTargetEntity($originalEntity, $newEntity, array $mapping)
    {
        $mapping['targetEntity']                                   = ltrim($newEntity, "\\");
        $this->resolveTargetEntities[ltrim($originalEntity, "\\")] = $mapping;
    }

    /**
     * @param OnClassMetadataNotFoundEventArgs $args
     *
     * @internal this is an event callback, and should not be called directly
     *
     * @return void
     */
    public function onClassMetadataNotFound(OnClassMetadataNotFoundEventArgs $args)
    {
        if (array_key_exists($args->getClassName(), $this->resolveTargetEntities)) {
            $args->setFoundMetadata(
                $args
                    ->getObjectManager()
                    ->getClassMetadata($this->resolveTargetEntities[$args->getClassname()]['targetEntity'])
            );
        }
    }

    /**
     * Processes event and resolves new target entity names.
     *
     * @param LoadClassMetadataEventArgs $args
     *
     * @return void
     *
     * @internal this is an event callback, and should not be called directly
     */
    public function loadClassMetadata(LoadClassMetadataEventArgs $args)
    {
        /* @var $cm \Doctrine\ORM\Mapping\ClassMetadata */
        $cm = $args->getClassMetadata();

        foreach ($cm->associationMappings as $mapping) {
            if (isset($this->resolveTargetEntities[$mapping['targetEntity']])) {
                $this->remapAssociation($cm, $mapping);
            }
        }

        foreach ($this->resolveTargetEntities as $interface => $data) {
            if ($data['targetEntity'] == $cm->getName()) {
                $args->getEntityManager()->getMetadataFactory()->setMetadataFor($interface, $cm);
            }
        }
    }

    /**
     * @param \Doctrine\ORM\Mapping\ClassMetadataInfo $classMetadata
     * @param array                                   $mapping
     *
     * @return void
     */
    private function remapAssociation($classMetadata, $mapping)
    {
        $newMapping = $this->resolveTargetEntities[$mapping['targetEntity']];
        $newMapping = array_replace_recursive($mapping, $newMapping);
        $newMapping['fieldName'] = $mapping['fieldName'];

        unset($classMetadata->associationMappings[$mapping['fieldName']]);

        switch ($mapping['type']) {
            case ClassMetadata::MANY_TO_MANY:
                $classMetadata->mapManyToMany($newMapping);
                break;
            case ClassMetadata::MANY_TO_ONE:
                $classMetadata->mapManyToOne($newMapping);
                break;
            case ClassMetadata::ONE_TO_MANY:
                $classMetadata->mapOneToMany($newMapping);
                break;
            case ClassMetadata::ONE_TO_ONE:
                $classMetadata->mapOneToOne($newMapping);
                break;
        }
    }
}

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