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<?php |
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declare(strict_types=1); |
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/* |
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* This file is part of the Explicit Architecture POC, |
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* which is created on top of the Symfony Demo application. |
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* |
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* (c) Herberto Graça <[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 Acme\App\Core\Component\Blog\Application\Query\DQL; |
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use Acme\App\Core\Component\Blog\Application\Query\FindPostsBySearchRequestQueryInterface; |
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use Acme\App\Core\Component\Blog\Application\Query\PostsBySearchRequestDto; |
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use Acme\App\Core\Component\Blog\Domain\Post\Post; |
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use Acme\App\Core\Port\Persistence\DQL\DqlQueryBuilderInterface; |
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use Acme\App\Core\Port\Persistence\QueryServiceInterface; |
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use Acme\App\Core\Port\Persistence\QueryServiceRouterInterface; |
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use Acme\App\Core\Port\Persistence\ResultCollection; |
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use Acme\App\Core\Port\Persistence\ResultCollectionInterface; |
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final class FindPostsBySearchRequestQuery implements FindPostsBySearchRequestQueryInterface |
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{ |
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/** |
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* @var DqlQueryBuilderInterface |
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*/ |
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private $dqlQueryBuilder; |
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/** |
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* @var QueryServiceInterface |
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*/ |
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private $queryService; |
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public function __construct( |
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DqlQueryBuilderInterface $dqlQueryBuilder, |
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QueryServiceRouterInterface $queryService |
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) { |
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$this->dqlQueryBuilder = $dqlQueryBuilder; |
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$this->queryService = $queryService; |
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} |
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/** |
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* @throws \Exception |
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* |
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* @return PostsBySearchRequestDto[] |
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*/ |
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public function execute(string $queryString, int $limit = self::NUM_ITEMS): ResultCollectionInterface |
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{ |
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$queryString = $this->sanitizeSearchQuery($queryString); |
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$searchTerms = $this->extractSearchTerms($queryString); |
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if (\count($searchTerms) === 0) { |
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return new ResultCollection(); |
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} |
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$this->dqlQueryBuilder->create(Post::class, 'Post') |
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->select( |
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'Post.title', |
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'Post.publishedAt', |
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'Post.summary', |
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'Post.slug', |
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'Author.fullName' |
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) |
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// This join with 'User:User' is the same as a join with User::class. The main difference is that this way |
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// we are not depending directly on the User entity, but on a configurable alias. The advantage is that we |
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// can change where the user data is stored and this query will remain the same. For example we could move |
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// this component into a microservice, with its own curated user data, and we wouldn't need to change this |
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// query, only the doctrine configuration. |
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->join('User:User', 'Author', 'WITH', 'Author.id = Post.authorId'); |
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foreach ($searchTerms as $key => $term) { |
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$this->dqlQueryBuilder->orWhere('Post.title LIKE :t_' . $key) |
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->setParameter('t_' . $key, '%' . $term . '%'); |
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} |
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$this->dqlQueryBuilder->orderBy('Post.publishedAt', 'DESC')->setMaxResults($limit); |
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$result = $this->queryService |
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->query($this->dqlQueryBuilder->build()); |
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return $result->hydrateResultItemsAs(PostsBySearchRequestDto::class); |
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} |
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/** |
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* Removes all non-alphanumeric characters except whitespaces. |
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*/ |
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private function sanitizeSearchQuery(string $query): string |
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{ |
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return trim(preg_replace('/[[:space:]]+/', ' ', $query)); |
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} |
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/** |
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* Splits the search query into terms and removes the ones which are irrelevant. |
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*/ |
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private function extractSearchTerms(string $searchQuery): array |
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{ |
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$terms = array_unique(explode(' ', $searchQuery)); |
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return array_filter( |
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$terms, |
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function ($term) { |
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return 2 <= mb_strlen($term); |
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} |
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); |
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} |
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} |
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hgraca /
explicit-architecture-php
Loading history...
Our type inference engine has found an assignment to a property that is incompatible with the declared type of that property.
Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property..