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QueryFilterManager::filter()   A

Complexity

Conditions 5
Paths 4

Size

Total Lines 21
Code Lines 15

Duplication

Lines 0
Ratio 0 %

Importance

Changes 2
Bugs 0 Features 0
Metric Value
cc 5
eloc 15
c 2
b 0
f 0
nc 4
nop 3
dl 0
loc 21
rs 9.4555
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<?php
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declare(strict_types=1);
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namespace Arp\LaminasDoctrine\Query;
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use Arp\LaminasDoctrine\Query\Exception\QueryFilterException;
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use Arp\LaminasDoctrine\Query\Exception\QueryFilterManagerException;
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use Arp\LaminasDoctrine\Query\Filter\FilterInterface;
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use Arp\LaminasDoctrine\Query\Filter\FilterManager;
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use Arp\LaminasDoctrine\Query\Metadata\Metadata;
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use Arp\LaminasDoctrine\Query\Metadata\MetadataInterface;
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use Doctrine\ORM\EntityManager;
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use Doctrine\ORM\QueryBuilder as DoctrineQueryBuilder;
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/**
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 * @author  Alex Patterson <[email protected]>
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 * @package Arp\LaminasDoctrine\Query
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 */
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class QueryFilterManager
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{
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    /**
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     * @var FilterManager
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     */
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    private FilterManager $filterManager;
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    /**
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     * @param FilterManager $filterManager
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     */
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    public function __construct(FilterManager $filterManager)
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    {
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        $this->filterManager = $filterManager;
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    }
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    /**
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     * Apply the query filters to the provided query builder instance
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     *
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     * @param DoctrineQueryBuilder|QueryBuilderInterface $queryBuilder
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     * @param string                                     $entityName
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     * @param array                                      $criteria
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     *
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     * @throws QueryFilterManagerException
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     */
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    public function filter($queryBuilder, string $entityName, array $criteria): void
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    {
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        if (empty($criteria['filters']) || !is_array($criteria['filters'])) {
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            return;
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        }
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        $queryBuilder = $this->getQueryBuilder($queryBuilder);
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        $metadata = $this->createMetadataProxy($queryBuilder->getEntityManager(), $entityName);
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        foreach ($criteria['filters'] as $data) {
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            try {
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                $this->applyFilter($queryBuilder, $metadata, $data);
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            } catch (QueryFilterException $e) {
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                throw new QueryFilterManagerException(
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                    sprintf(
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                        'An error occurred while attempting to apply the query filters for entity \'%s\': %s',
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                        $entityName,
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                        $e->getMessage()
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                    ),
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                    $e->getCode(),
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                    $e
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                );
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            }
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        }
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    }
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    /**
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     * @param QueryBuilderInterface|DoctrineQueryBuilder $queryBuilder
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     *
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     * @return QueryBuilderInterface
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     *
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     * @throws QueryFilterManagerException
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     */
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    private function getQueryBuilder($queryBuilder): QueryBuilderInterface
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    {
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        if ($queryBuilder instanceof DoctrineQueryBuilder) {
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            $queryBuilder = $this->createQueryBuilderProxy($queryBuilder);
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        }
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        if (!$queryBuilder instanceof QueryBuilderInterface) {
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            throw new QueryFilterManagerException(
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                sprintf(
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                    'The \'queryBuilder\' argument must be an object of type \'%s\' or \'%s\'; '
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                    . '\'%s\' provided in \'%s\'',
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                    QueryBuilderInterface::class,
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                    DoctrineQueryBuilder::class,
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                    is_object($queryBuilder) ? get_class($queryBuilder) : gettype($queryBuilder),
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                    static::class
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                )
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            );
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        }
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        return $queryBuilder;
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    }
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    /**
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     * @param QueryBuilderInterface $queryBuilder
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     * @param MetadataInterface     $metadata
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     * @param array                 $data
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     *
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     * @throws QueryFilterException
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     */
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    private function applyFilter(QueryBuilderInterface $queryBuilder, MetadataInterface $metadata, array $data): void
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    {
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        $filterName = $data['name'] ?? null;
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        if (empty($filterName)) {
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            throw new QueryFilterException(
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                sprintf('The required \'name\' query filter configuration option is missing in \'%s\'', __METHOD__)
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            );
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        }
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        $filter = $this->createFilter($filterName, $data['options'] ?? []);
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        $filter->filter($queryBuilder, $metadata, $data);
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    }
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    /**
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     * @param string $name
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     * @param array  $options
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     *
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     * @return FilterInterface
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     *
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     * @throws QueryFilterException
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     */
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    private function createFilter(string $name, array $options = []): FilterInterface
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    {
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        try {
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            /** @var FilterInterface $filter */
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            return $this->filterManager->build(
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                $name,
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                array_replace_recursive($options, ['query_filter_manager' => $this])
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            );
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        } catch (\Throwable $e) {
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            throw new QueryFilterException(
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                sprintf('Failed to build query filter \'%s\': %s', $name, $e->getMessage()),
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                $e->getCode(),
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                $e
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            );
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        }
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    }
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    /**
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     * @param EntityManager $entityManager
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     * @param string        $entityName
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     *
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     * @return MetadataInterface
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     *
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     * @throws QueryFilterManagerException
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     */
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    private function createMetadataProxy(EntityManager $entityManager, string $entityName): MetadataInterface
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    {
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        try {
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            return new Metadata($entityManager->getClassMetadata($entityName));
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        } catch (\Throwable $e) {
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            throw new QueryFilterManagerException(
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                sprintf('Failed to fetch entity metadata for class \'%s\': %s', $entityName, $e->getMessage()),
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                $e->getCode(),
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                $e
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            );
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        }
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    }
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    /**
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     * @param DoctrineQueryBuilder $queryBuilder
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     *
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     * @return QueryBuilderInterface
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     */
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    private function createQueryBuilderProxy(DoctrineQueryBuilder $queryBuilder): QueryBuilderInterface
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    {
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        return new QueryBuilder($queryBuilder);
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    }
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}
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