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<?php |
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/* |
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* This file is part of the FOSElasticaBundle package. |
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* |
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* (c) FriendsOfSymfony <http://friendsofsymfony.github.com/> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace FOS\ElasticaBundle\Doctrine; |
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use Doctrine\Common\Persistence\ManagerRegistry; |
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use Doctrine\ORM\Query\Expr\From; |
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use Doctrine\ORM\QueryBuilder; |
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use FOS\ElasticaBundle\Provider\PagerfantaPager; |
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use FOS\ElasticaBundle\Provider\PagerProviderInterface; |
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use Pagerfanta\Adapter\DoctrineORMAdapter; |
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use Pagerfanta\Pagerfanta; |
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final class ORMPagerProvider implements PagerProviderInterface |
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{ |
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const ENTITY_ALIAS = 'a'; |
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/** |
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* @var string |
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*/ |
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private $objectClass; |
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/** |
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* @var ManagerRegistry |
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*/ |
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private $doctrine; |
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/** |
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* @var array |
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*/ |
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private $baseOptions; |
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/** |
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* @var RegisterListenersService |
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*/ |
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private $registerListenersService; |
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/** |
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* @param ManagerRegistry $doctrine |
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* @param RegisterListenersService $registerListenersService |
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* @param string $objectClass |
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* @param array $baseOptions |
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*/ |
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public function __construct(ManagerRegistry $doctrine, RegisterListenersService $registerListenersService, $objectClass, array $baseOptions) |
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{ |
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$this->doctrine = $doctrine; |
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$this->objectClass = $objectClass; |
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$this->baseOptions = $baseOptions; |
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$this->registerListenersService = $registerListenersService; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function provide(array $options = array()) |
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{ |
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$options = array_replace($this->baseOptions, $options); |
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$manager = $this->doctrine->getManagerForClass($this->objectClass); |
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$repository = $manager->getRepository($this->objectClass); |
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$qb = \call_user_func([$repository, $options['query_builder_method']], self::ENTITY_ALIAS); |
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// Ensure that the query builder has a sorting configured. Without a ORDER BY clause, the SQL standard does not |
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// guarantee any order, which breaks the pagination (second page might use a different sorting that when retrieving |
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// the first page). |
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// If the QueryBuilder already has its own ordering, or the method returned a Query instead of a QueryBuilder, we |
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// assume that the query already provides a proper sorting. This allows giving full control over sorting if wanted |
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// when using a custom method. |
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if ($qb instanceof QueryBuilder && empty($qb->getDQLPart('orderBy'))) { |
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// When getting root aliases, the QueryBuilder normalizes all from parts to From objects, in case they were added as string using the low-level API. |
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// This side-effect allows us to be sure to get only From objects in the next call. |
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$qb->getRootAliases(); |
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/** @var From[] $fromClauses */ |
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$fromClauses = $qb->getDQLPart('from'); |
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foreach ($fromClauses as $fromClause) { |
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$identifiers = $manager->getClassMetadata($fromClause->getFrom())->getIdentifierFieldNames(); |
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foreach ($identifiers as $identifier) { |
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$qb->addOrderBy($fromClause->getAlias().'.'.$identifier); |
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} |
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} |
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} |
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$pager = new PagerfantaPager(new Pagerfanta(new DoctrineORMAdapter($qb))); |
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$this->registerListenersService->register($manager, $pager, $options); |
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return $pager; |
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} |
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} |
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Unless you are absolutely sure that the expression can never be null because of other conditions, we strongly recommend to add an additional type check to your code: