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<?php |
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/* |
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* This file is part of the Pagerfanta package. |
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* |
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* (c) Tugrul Topuz <[email protected]> |
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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 Pagerfanta\Adapter; |
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use Doctrine\DBAL\Query\QueryBuilder; |
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use Doctrine\ORM\EntityManagerInterface; |
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use Doctrine\ORM\Query\ResultSetMapping; |
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use Pagerfanta\Adapter\AdapterInterface; |
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use Pagerfanta\Exception\InvalidArgumentException; |
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/** |
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* DoctrineORMNativeQueryAdapter. |
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* |
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* @author Tugrul Topuz <[email protected]> |
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*/ |
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class DoctrineORMNativeQueryAdapter implements AdapterInterface |
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{ |
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/** |
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* @var ResultSetMapping |
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*/ |
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protected $resultSetMapping; |
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/** |
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* @var EntityManagerInterface |
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*/ |
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protected $entityManager; |
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/** |
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* @var QueryBuilder |
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*/ |
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protected $queryBuilder; |
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/** |
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* @var callable |
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*/ |
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protected $countQueryBuilderModifier; |
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/** |
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* Constructor. |
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* |
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* @param QueryBuilder $queryBuilder A DBAL query builder. |
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* @param EntityManagerInterface $entityManager To create NativeQuery instance |
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* @param ResultSetMapping $resultSetMapping ORM Mapping |
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* @param callable $countQueryBuilderModifier A callable to modifier the query builder to count. |
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*/ |
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public function __construct(QueryBuilder $queryBuilder, EntityManagerInterface $entityManager, |
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ResultSetMapping $resultSetMapping, $countQueryBuilderModifier) |
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{ |
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if ($queryBuilder->getType() !== QueryBuilder::SELECT) { |
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throw new InvalidArgumentException('Only SELECT queries can be paginated.'); |
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} |
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if (!is_callable($countQueryBuilderModifier)) { |
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throw new InvalidArgumentException('The count query builder modifier must be a callable.'); |
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} |
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$this->queryBuilder = clone $queryBuilder; |
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$this->entityManager = $entityManager; |
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$this->resultSetMapping = $resultSetMapping; |
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$this->countQueryBuilderModifier = $countQueryBuilderModifier; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getNbResults() |
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{ |
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$qb = $this->prepareCountQueryBuilder(); |
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$result = $qb->execute()->fetchColumn(); |
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return (int) $result; |
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} |
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protected function prepareCountQueryBuilder() |
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{ |
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$qb = clone $this->queryBuilder; |
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call_user_func($this->countQueryBuilderModifier, $qb); |
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return $qb; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getSlice($offset, $length) |
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{ |
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$qb = clone $this->queryBuilder; |
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$qb->setMaxResults($length) |
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->setFirstResult($offset); |
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$nativeQuery = $this->entityManager->createNativeQuery($qb->getSQL(), $this->resultSetMapping); |
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$nativeQuery->setParameters($qb->getParameters()); |
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return $nativeQuery->getResult(); |
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} |
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} |
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whiteoctober /
Pagerfanta
