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<?php declare(strict_types=1); |
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namespace Mgid\Component\Pagination; |
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use Mgid\Component\Pagination\Mapping\Mapping; |
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use Symfony\Component\Validator\Validator\ValidatorInterface; |
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use Mgid\Component\Pagination\Mapping\MappingInterface; |
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use Mgid\Component\Pagination\Normalizer\ChainNormalizer; |
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use Symfony\Component\Validator\Exception\ValidationFailedException; |
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use Mgid\Component\Pagination\Normalizer\NormalizerInterface; |
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final class Paginator implements PaginatorInterface |
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{ |
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/** |
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* @var array<string,string> |
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*/ |
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private array $adapters = []; |
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/** |
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* @var array<string,array<NormalizerInterface>> |
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*/ |
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private array $normalizers = []; |
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/** |
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* @var MappingInterface |
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*/ |
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private MappingInterface $mapping; |
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/** |
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* @var ValidatorInterface |
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*/ |
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private ValidatorInterface $validator; |
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/** |
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* @param ValidatorInterface $validator |
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*/ |
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public function __construct(ValidatorInterface $validator) |
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{ |
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$this->mapping = new Mapping(); |
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$this->validator = $validator; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getMapping(): MappingInterface |
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{ |
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return $this->mapping; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function addAdapter(string $queryBuilderClassName, string $adapterClassName): void |
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{ |
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$this->adapters[$queryBuilderClassName] = $adapterClassName; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function addNormalizer(string $queryBuilderClassName, NormalizerInterface $normalizer): void |
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{ |
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$this->normalizers[$queryBuilderClassName][] = $normalizer; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function paginate(object $queryBuilder, InputInterface $input): OutputInterface |
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{ |
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$this->validate($input); |
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$adapter = $this->getAdapter($queryBuilder); |
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$normalizer = $this->getNormalizer(\get_class($queryBuilder)); |
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$this->mapping->setRootAlias($adapter->getRootAlias()); |
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$this->mapping->normalize($input, $normalizer); |
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$adapter->addFilters($input); |
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$items = []; |
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$count = $adapter->getCount(); |
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if ($count > 0) { |
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$adapter->addOrders($input); |
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$adapter->addPagination($input); |
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$items = $adapter->getItems(); |
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} |
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return new Output($count, $items); |
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} |
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/** |
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* @param object $queryBuilder |
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* |
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* @return Adapter\QueryBuilderAdapterInterface |
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*/ |
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private function getAdapter(object $queryBuilder): Adapter\QueryBuilderAdapterInterface |
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{ |
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foreach ($this->adapters as $queryBuilderClassName => $adapterClassName) { |
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if ($queryBuilder instanceof $queryBuilderClassName) { |
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return new $adapterClassName($queryBuilder); |
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} |
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} |
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throw new \RuntimeException(\sprintf('No adapter found for query builder of %s', \get_class($queryBuilder))); |
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} |
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/** |
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* @param string $queryBuilderClassName |
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* |
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* @return NormalizerInterface |
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*/ |
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private function getNormalizer(string $queryBuilderClassName): NormalizerInterface |
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{ |
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return new ChainNormalizer($this->normalizers[$queryBuilderClassName] ?? []); |
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} |
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/** |
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* @param InputInterface $input |
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* |
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* @throws ValidationFailedException |
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*/ |
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private function validate(InputInterface $input): void |
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{ |
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$violations = $this->validator->validate($input); |
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if ($violations->count()) { |
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throw new ValidationFailedException($input, $violations); |
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} |
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} |
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} |
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mgid /
pagination
