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<?php |
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namespace KGzocha\Searcher\CriteriaBuilder\Doctrine; |
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use Doctrine\ORM\Query\Expr\Join; |
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use Doctrine\ORM\QueryBuilder; |
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use KGzocha\Searcher\Context\Doctrine\QueryBuilderSearchingContext; |
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use KGzocha\Searcher\Context\SearchingContextInterface; |
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use KGzocha\Searcher\CriteriaBuilder\CriteriaBuilderInterface; |
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/** |
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* Abstract CriteriaBuilder that can be used in builders that supports |
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* only ODMBuilderSearchingContext. |
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* Extra feature is join() method which will add another join only |
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* if there is not such join already. |
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* |
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*@author Krzysztof Gzocha <[email protected]> |
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*/ |
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abstract class AbstractORMCriteriaBuilder implements |
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CriteriaBuilderInterface |
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{ |
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/** |
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* {@inheritdoc} |
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*/ |
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public function supportsSearchingContext( |
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SearchingContextInterface $searchingContext |
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) { |
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return $searchingContext instanceof QueryBuilderSearchingContext; |
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} |
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/** |
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* Will do JOIN only if there is no such join already. |
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* For any other more advanced join strategies please use unique aliases. |
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* Remember: for performance reasons you should keep number of joins as low as possible |
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* Example usage: $this->join($qb, 'p.house', 'h', Join::LEFT_JOIN). |
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* |
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* @param QueryBuilder $queryBuilder |
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* @param string $join |
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* @param string $alias |
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* @param string $joinType |
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* |
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* @return QueryBuilder |
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*/ |
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protected function join(QueryBuilder $queryBuilder, $join, $alias, $joinType) |
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{ |
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list($entity) = explode('.', $join); |
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$joinParts = $queryBuilder->getDQLPart('join'); |
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if (!array_key_exists($entity, $joinParts)) { |
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if (Join::LEFT_JOIN === $joinType) { |
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return $queryBuilder->leftJoin($join, $alias); |
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} |
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return $queryBuilder->join($join, $alias); |
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} |
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return $this->filterExistingJoins( |
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$queryBuilder, |
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$joinParts[$entity], |
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$alias, |
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$join, |
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$joinType |
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); |
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} |
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/** |
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* @param QueryBuilder $queryBuilder |
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* @param array $joinParts |
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* @param string $alias |
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* @param string $join |
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* @param string $joinType |
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* |
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* @return QueryBuilder |
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*/ |
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protected function filterExistingJoins( |
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QueryBuilder $queryBuilder, |
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$joinParts, |
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$alias, |
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$join, |
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$joinType |
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) { |
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$existingJoin = array_filter( |
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$joinParts, |
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function(Join $joinObj) use ($alias, $join, $joinType) { |
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return $joinObj->getJoinType() == $joinType |
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&& $joinObj->getAlias() == $alias |
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&& $joinObj->getJoin() == $join; |
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} |
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); |
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if ([] != $existingJoin) { |
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return $queryBuilder; |
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} |
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if (Join::LEFT_JOIN === $joinType) { |
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return $queryBuilder->leftJoin($join, $alias); |
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} |
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return $queryBuilder->join($join, $alias); |
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} |
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} |
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krzysztof-gzocha /
searcher
