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<?php
namespace Faker\ORM\Doctrine;
use Doctrine\Common\Persistence\ObjectManager;
use Faker\Generator;
/**
* Service class for populating a database using the Doctrine ORM or ODM.
* A Populator can populate several tables using ActiveRecord classes.
*/
class Populator
{
/** @var int */
protected $batchSize;
/** @var Generator */
protected $generator;
/** @var ObjectManager|null */
protected $manager;
/** @var array */
protected $entities = array();
/** @var array */
protected $quantities = array();
/** @var array */
protected $generateId = array();
/**
* Populator constructor.
* @param Generator $generator
* @param ObjectManager|null $manager
* @param int $batchSize
*/
public function __construct(Generator $generator, ObjectManager $manager = null, $batchSize = 1000)
{
$this->generator = $generator;
$this->manager = $manager;
$this->batchSize = $batchSize;
}
/**
* Add an order for the generation of $number records for $entity.
*
* @param mixed $entity A Doctrine classname, or a \Faker\ORM\Doctrine\EntityPopulator instance
* @param int $number The number of entities to populate
*/
public function addEntity($entity, $number, $customColumnFormatters = array(), $customModifiers = array(), $generateId = false)
{
if (!$entity instanceof \Faker\ORM\Doctrine\EntityPopulator) {
if (null === $this->manager) {
throw new \InvalidArgumentException("No entity manager passed to Doctrine Populator.");
}
$entity = new \Faker\ORM\Doctrine\EntityPopulator($this->manager->getClassMetadata($entity));
}
$entity->setColumnFormatters($entity->guessColumnFormatters($this->generator));
if ($customColumnFormatters) {
$entity->mergeColumnFormattersWith($customColumnFormatters);
}
$entity->mergeModifiersWith($customModifiers);
$this->generateId[$entity->getClass()] = $generateId;
$class = $entity->getClass();
$this->entities[$class] = $entity;
$this->quantities[$class] = $number;
}
/**
* Populate the database using all the Entity classes previously added.
*
* Please note that large amounts of data will result in more memory usage since the the Populator will return
* all newly created primary keys after executing.
*
* @param null|EntityManager $entityManager A Doctrine connection object
*
* @return array A list of the inserted PKs
*/
public function execute($entityManager = null)
{
if (null === $entityManager) {
$entityManager = $this->manager;
}
if (null === $entityManager) {
throw new \InvalidArgumentException("No entity manager passed to Doctrine Populator.");
}
$insertedEntities = array();
foreach ($this->quantities as $class => $number) {
$generateId = $this->generateId[$class];
for ($i=0; $i < $number; $i++) {
$insertedEntities[$class][]= $this->entities[$class]->execute(
$entityManager,
$insertedEntities,
$generateId
);
if (count($insertedEntities) % $this->batchSize === 0) {
$entityManager->flush();
$entityManager->clear($class);
}
}
$entityManager->flush();
$entityManager->clear($class);
}
return $insertedEntities;
}
}