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<?php |
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/* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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* |
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* This software consists of voluntary contributions made by many individuals |
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* and is licensed under the MIT license. For more information, see |
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* <http://www.doctrine-project.org>. |
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*/ |
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namespace Doctrine\ODM\MongoDB\Aggregation\Stage; |
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use Doctrine\MongoDB\Aggregation\Stage as BaseStage; |
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use Doctrine\ODM\MongoDB\Aggregation\Builder; |
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use Doctrine\ODM\MongoDB\DocumentManager; |
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use Doctrine\ODM\MongoDB\Mapping\ClassMetadata; |
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use Doctrine\ODM\MongoDB\Mapping\ClassMetadataInfo; |
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use Doctrine\ODM\MongoDB\Mapping\MappingException; |
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use Doctrine\ODM\MongoDB\Query\Expr; |
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/** |
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* Fluent interface for building aggregation pipelines. |
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* |
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* @author alcaeus <[email protected]> |
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*/ |
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class Lookup extends BaseStage\Lookup |
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{ |
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/** |
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* @var DocumentManager |
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*/ |
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private $dm; |
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/** |
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* @var ClassMetadata |
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*/ |
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private $class; |
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/** |
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* @var ClassMetadata |
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*/ |
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private $targetClass; |
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/** |
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* @param Builder $builder |
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* @param string $from |
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* @param DocumentManager $documentManager |
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* @param ClassMetadata $class |
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*/ |
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public function __construct(Builder $builder, $from, DocumentManager $documentManager, ClassMetadata $class) |
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{ |
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$this->dm = $documentManager; |
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$this->class = $class; |
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parent::__construct($builder, $from); |
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} |
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/** |
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* @param string $from |
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* @return $this |
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*/ |
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public function from($from) |
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{ |
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// $from can either be |
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// a) a field name indicating a reference to a different document. Currently, only REFERENCE_STORE_AS_ID is supported |
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// b) a Class name |
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// c) a collection name |
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// In cases b) and c) the local and foreign fields need to be filled |
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if ($this->class->hasReference($from)) { |
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return $this->fromReference($from); |
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} else { |
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return parent::from($from); // TODO: Change the autogenerated stub |
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} |
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} |
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/** |
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* @param string $fieldName |
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* @return $this |
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* @throws MappingException |
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*/ |
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private function fromReference($fieldName) |
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{ |
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if (! $this->class->hasReference($fieldName)) { |
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MappingException::referenceMappingNotFound($this->class->name, $fieldName); |
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} |
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$referenceMapping = $this->class->getFieldMapping($fieldName); |
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if ($referenceMapping['storeAs'] !== ClassMetadataInfo::REFERENCE_STORE_AS_ID) { |
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// TODO: Change exception |
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throw new \InvalidArgumentException('Can\'t use non-ID references in lookup stages yet.'); |
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} |
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if (isset($mapping['repositoryMethod'])) { |
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// TODO: Use proper exception |
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throw new \InvalidArgumentException('Can\'t use inverse references with repositoryMethod in lookup stages.'); |
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} |
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if ($mapping['isOwningSide'] && $mapping['association'] === ClassMetadataInfo::REFERENCE_MANY) { |
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// TODO: throw exception here? This would work if users used an unwind stage before |
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throw new \InvalidArgumentException('Can\'t use owning many references in lookup stages.'); |
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} |
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// Get target mapping |
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if (empty($mapping['targetDocument'])) { |
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// TODO: Use proper exception |
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throw new \InvalidArgumentException('References must have a target document to be used in lookup stages'); |
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} |
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$targetMapping = $this->dm->getClassMetadata($mapping['targetDocument']); |
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if ($targetMapping->isInheritanceTypeCollectionPerClass()) { |
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// TODO: Use proper exception |
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throw new \InvalidArgumentException(); |
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} |
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$this->from($targetMapping->getCollection()); |
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if ($mapping['isOwningSide']) { |
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$this |
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->foreignField('_id') |
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->localField($fieldName); |
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} else { |
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$mappedByMapping = $targetMapping->getFieldMapping($mapping['mappedBy']); |
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$this |
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->localField('_id') |
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->foreignField($mappedByMapping['fieldName']); |
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} |
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return $this; |
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} |
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} |
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doctrine /
mongodb-odm
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