DocumentPersister::delete() - Code Metrics - Inspection of "Merge pull request #1790 from alcaeus/gridfs-2.0" - doctrine/mongodb-odm - Measure and Improve Code Quality continuously with Scrutinizer

Completed
Push — master ( f0fe3a...13ea99 )

by Andreas
created 2018-08-03 05:17 UTC
DocumentPersister::delete() B

↳ Parent: DocumentPersister
Complexity

Conditions	6
Paths	5
Size

Total Lines
Duplication

Lines	0
Ratio	0 %
Code Coverage

Tests	14
CRAP Score	6
Importance

Changes
Metric	Value
dl	0
loc	25
ccs	14
cts	14
cp	1
rs	8.8977
c	0
b	0
f	0
cc	6
nc	5
nop	2
crap	6
<?php

declare(strict_types=1);

namespace Doctrine\ODM\MongoDB\Persisters;

use Doctrine\Common\Persistence\Mapping\MappingException;
use Doctrine\ODM\MongoDB\DocumentManager;
use Doctrine\ODM\MongoDB\Hydrator\HydratorFactory;
use Doctrine\ODM\MongoDB\Iterator\CachingIterator;
use Doctrine\ODM\MongoDB\Iterator\HydratingIterator;
use Doctrine\ODM\MongoDB\Iterator\Iterator;
use Doctrine\ODM\MongoDB\Iterator\PrimingIterator;
use Doctrine\ODM\MongoDB\LockException;
use Doctrine\ODM\MongoDB\LockMode;
use Doctrine\ODM\MongoDB\Mapping\ClassMetadata;
use Doctrine\ODM\MongoDB\MongoDBException;
use Doctrine\ODM\MongoDB\PersistentCollection\PersistentCollectionInterface;
use Doctrine\ODM\MongoDB\Proxy\Proxy;
use Doctrine\ODM\MongoDB\Query\CriteriaMerger;
use Doctrine\ODM\MongoDB\Query\Query;
use Doctrine\ODM\MongoDB\Query\ReferencePrimer;
use Doctrine\ODM\MongoDB\Types\Type;
use Doctrine\ODM\MongoDB\UnitOfWork;
use Doctrine\ODM\MongoDB\Utility\CollectionHelper;
use MongoDB\BSON\ObjectId;
use MongoDB\Collection;
use MongoDB\Driver\Cursor;
use MongoDB\Driver\Exception\Exception as DriverException;
use MongoDB\Driver\Exception\WriteException;
use MongoDB\GridFS\Bucket;
use function array_combine;
use function array_fill;
use function array_intersect_key;
use function array_keys;
use function array_map;
use function array_merge;
use function array_search;
use function array_slice;
use function array_values;
use function count;
use function explode;
use function get_class;
use function get_object_vars;
use function implode;
use function in_array;
use function is_array;
use function is_object;
use function is_scalar;
use function max;
use function spl_object_hash;
use function sprintf;
use function strpos;
use function strtolower;

/**
 * The DocumentPersister is responsible for persisting documents.
 *
 */
class DocumentPersister
{
    /**
     * The PersistenceBuilder instance.
     *
     * @var PersistenceBuilder
     */
    private $pb;

    /**
     * The DocumentManager instance.
     *
     * @var DocumentManager
     */
    private $dm;

    /**
     * The UnitOfWork instance.
     *
     * @var UnitOfWork
     */
    private $uow;

    /**
     * The ClassMetadata instance for the document type being persisted.
     *
     * @var ClassMetadata
     */
    private $class;

    /**
     * The MongoCollection instance for this document.
     *
     * @var Collection
     */
    private $collection;

    /** @var Bucket|null */
    private $bucket;

    /**
     * Array of queued inserts for the persister to insert.
     *
     * @var array
     */
    private $queuedInserts = [];

    /**
     * Array of queued inserts for the persister to insert.
     *
     * @var array
     */
    private $queuedUpserts = [];

    /**
     * The CriteriaMerger instance.
     *
     * @var CriteriaMerger
     */
    private $cm;

    /**
     * The CollectionPersister instance.
     *
     * @var CollectionPersister
     */
    private $cp;

    /**
     * The HydratorFactory instance.
     *
     * @var HydratorFactory
     */
    private $hydratorFactory;

    /**
     * Initializes this instance.
     *
     */
    public function __construct(
        PersistenceBuilder $pb,
        DocumentManager $dm,
        UnitOfWork $uow,
        HydratorFactory $hydratorFactory,
        ClassMetadata $class,
        ?CriteriaMerger $cm = null
    ) {
        $this->pb = $pb;
        $this->dm = $dm;
        $this->cm = $cm ?: new CriteriaMerger();
        $this->uow = $uow;
        $this->hydratorFactory = $hydratorFactory;
        $this->class = $class;
        $this->collection = $dm->getDocumentCollection($class->name);
        $this->cp = $this->uow->getCollectionPersister();

        if (! $class->isFile) {
            return;
        }

        $this->bucket = $dm->getDocumentBucket($class->name);
    }

    /**
     * @return array
     */
    public function getInserts()
    {
        return $this->queuedInserts;
    }

    /**
     * @param object $document
     * @return bool
     */
    public function isQueuedForInsert($document)
    {
        return isset($this->queuedInserts[spl_object_hash($document)]);
    }

    /**
     * Adds a document to the queued insertions.
     * The document remains queued until {@link executeInserts} is invoked.
     *
     * @param object $document The document to queue for insertion.
     */
    public function addInsert($document)
    {
        $this->queuedInserts[spl_object_hash($document)] = $document;
    }

    /**
     * @return array
     */
    public function getUpserts()
    {
        return $this->queuedUpserts;
    }

    /**
     * @param object $document
     * @return bool
     */
    public function isQueuedForUpsert($document)
    {
        return isset($this->queuedUpserts[spl_object_hash($document)]);
    }

    /**
     * Adds a document to the queued upserts.
     * The document remains queued until {@link executeUpserts} is invoked.
     *
     * @param object $document The document to queue for insertion.
     */
    public function addUpsert($document)
    {
        $this->queuedUpserts[spl_object_hash($document)] = $document;
    }

    /**
     * Gets the ClassMetadata instance of the document class this persister is used for.
     *
     * @return ClassMetadata
     */
    public function getClassMetadata()
    {
        return $this->class;
    }

    /**
     * Executes all queued document insertions.
     *
     * Queued documents without an ID will inserted in a batch and queued
     * documents with an ID will be upserted individually.
     *
     * If no inserts are queued, invoking this method is a NOOP.
     *
     * @param array $options Options for batchInsert() and update() driver methods
     */
    public function executeInserts(array $options = [])
    {
        if (! $this->queuedInserts) {

            return;
        }

        $inserts = [];
        $options = $this->getWriteOptions($options);
        foreach ($this->queuedInserts as $oid => $document) {
            $data = $this->pb->prepareInsertData($document);

            // Set the initial version for each insert
            if ($this->class->isVersioned) {
                $versionMapping = $this->class->fieldMappings[$this->class->versionField];
                $nextVersion = null;
                if ($versionMapping['type'] === 'int') {
                    $nextVersion = max(1, (int) $this->class->reflFields[$this->class->versionField]->getValue($document));
                    $this->class->reflFields[$this->class->versionField]->setValue($document, $nextVersion);
                } elseif ($versionMapping['type'] === 'date') {
                    $nextVersionDateTime = new \DateTime();
                    $nextVersion = Type::convertPHPToDatabaseValue($nextVersionDateTime);
                    $this->class->reflFields[$this->class->versionField]->setValue($document, $nextVersionDateTime);
                }
                $data[$versionMapping['name']] = $nextVersion;
            }

            $inserts[] = $data;
        }

        if ($inserts) {

            try {
                $this->collection->insertMany($inserts, $options);
            } catch (DriverException $e) {

                $this->queuedInserts = [];
                throw $e;
            }
        }

        /* All collections except for ones using addToSet have already been
         * saved. We have left these to be handled separately to avoid checking
         * collection for uniqueness on PHP side.
         */
        foreach ($this->queuedInserts as $document) {
            $this->handleCollections($document, $options);
        }

        $this->queuedInserts = [];
    }

    /**
     * Executes all queued document upserts.
     *
     * Queued documents with an ID are upserted individually.
     *
     * If no upserts are queued, invoking this method is a NOOP.
     *
     * @param array $options Options for batchInsert() and update() driver methods
     */
    public function executeUpserts(array $options = [])
    {
        if (! $this->queuedUpserts) {

            return;
        }

        $options = $this->getWriteOptions($options);
        foreach ($this->queuedUpserts as $oid => $document) {
            try {
                $this->executeUpsert($document, $options);
                $this->handleCollections($document, $options);
                unset($this->queuedUpserts[$oid]);
            } catch (WriteException $e) {

                unset($this->queuedUpserts[$oid]);
                throw $e;
            }
        }
    }

    /**
     * Executes a single upsert in {@link executeUpserts}
     *
     * @param object $document
     * @param array  $options
     */
    private function executeUpsert($document, array $options)
    {
        $options['upsert'] = true;
        $criteria = $this->getQueryForDocument($document);

        $data = $this->pb->prepareUpsertData($document);

        // Set the initial version for each upsert
        if ($this->class->isVersioned) {
            $versionMapping = $this->class->fieldMappings[$this->class->versionField];
            $nextVersion = null;
            if ($versionMapping['type'] === 'int') {
                $nextVersion = max(1, (int) $this->class->reflFields[$this->class->versionField]->getValue($document));
                $this->class->reflFields[$this->class->versionField]->setValue($document, $nextVersion);
            } elseif ($versionMapping['type'] === 'date') {
                $nextVersionDateTime = new \DateTime();
                $nextVersion = Type::convertPHPToDatabaseValue($nextVersionDateTime);
                $this->class->reflFields[$this->class->versionField]->setValue($document, $nextVersionDateTime);
            }
            $data['$set'][$versionMapping['name']] = $nextVersion;
        }

        foreach (array_keys($criteria) as $field) {
            unset($data['$set'][$field]);
            unset($data['$inc'][$field]);
            unset($data['$setOnInsert'][$field]);
        }

        // Do not send empty update operators
        foreach (['$set', '$inc', '$setOnInsert'] as $operator) {
            if (! empty($data[$operator])) {
                continue;
            }

            unset($data[$operator]);
        }

        /* If there are no modifiers remaining, we're upserting a document with
         * an identifier as its only field. Since a document with the identifier
         * may already exist, the desired behavior is "insert if not exists" and
         * NOOP otherwise. MongoDB 2.6+ does not allow empty modifiers, so $set
         * the identifier to the same value in our criteria.
         *
         * This will fail for versions before MongoDB 2.6, which require an
         * empty $set modifier. The best we can do (without attempting to check
         * server versions in advance) is attempt the 2.6+ behavior and retry
         * after the relevant exception.
         *
         * See: https://jira.mongodb.org/browse/SERVER-12266
         */
        if (empty($data)) {
            $retry = true;
            $data = ['$set' => ['_id' => $criteria['_id']]];
        }

        try {
            $this->collection->updateOne($criteria, $data, $options);
            return;
        } catch (WriteException $e) {

            if (empty($retry) || strpos($e->getMessage(), 'Mod on _id not allowed') === false) {
                throw $e;
            }
        }

        $this->collection->updateOne($criteria, ['$set' => new \stdClass()], $options);
    }

    /**
     * Updates the already persisted document if it has any new changesets.
     *
     * @param object $document
     * @param array  $options  Array of options to be used with update()
     * @throws LockException
     */
    public function update($document, array $options = [])
    {
        $update = $this->pb->prepareUpdateData($document);

        $query = $this->getQueryForDocument($document);

        foreach (array_keys($query) as $field) {
            unset($update['$set'][$field]);
        }

        if (empty($update['$set'])) {
            unset($update['$set']);
        }

        // Include versioning logic to set the new version value in the database
        // and to ensure the version has not changed since this document object instance
        // was fetched from the database
        $nextVersion = null;
        if ($this->class->isVersioned) {
            $versionMapping = $this->class->fieldMappings[$this->class->versionField];
            $currentVersion = $this->class->reflFields[$this->class->versionField]->getValue($document);
            if ($versionMapping['type'] === 'int') {
                $nextVersion = $currentVersion + 1;
                $update['$inc'][$versionMapping['name']] = 1;
                $query[$versionMapping['name']] = $currentVersion;
            } elseif ($versionMapping['type'] === 'date') {
                $nextVersion = new \DateTime();
                $update['$set'][$versionMapping['name']] = Type::convertPHPToDatabaseValue($nextVersion);
                $query[$versionMapping['name']] = Type::convertPHPToDatabaseValue($currentVersion);
            }
        }

        if (! empty($update)) {
            // Include locking logic so that if the document object in memory is currently
            // locked then it will remove it, otherwise it ensures the document is not locked.
            if ($this->class->isLockable) {
                $isLocked = $this->class->reflFields[$this->class->lockField]->getValue($document);
                $lockMapping = $this->class->fieldMappings[$this->class->lockField];
                if ($isLocked) {
                    $update['$unset'] = [$lockMapping['name'] => true];
                } else {
                    $query[$lockMapping['name']] = ['$exists' => false];
                }
            }

            $options = $this->getWriteOptions($options);

            $result = $this->collection->updateOne($query, $update, $options);

            if (($this->class->isVersioned || $this->class->isLockable) && $result->getModifiedCount() !== 1) {
                throw LockException::lockFailed($document);
            } elseif ($this->class->isVersioned) {
                $this->class->reflFields[$this->class->versionField]->setValue($document, $nextVersion);
            }
        }

        $this->handleCollections($document, $options);
    }

    /**
     * Removes document from mongo
     *
     * @param mixed $document
     * @param array $options  Array of options to be used with remove()
     * @throws LockException
     */
    public function delete($document, array $options = [])
    {
        if ($this->bucket instanceof Bucket) {
if ($x instanceof DoesNotExist) {
    // Do something.
}
            $documentIdentifier = $this->uow->getDocumentIdentifier($document);
            $databaseIdentifier = $this->class->getDatabaseIdentifierValue($documentIdentifier);

            $this->bucket->delete($databaseIdentifier);

            return;
        }

        $query = $this->getQueryForDocument($document);

        if ($this->class->isLockable) {
            $query[$this->class->lockField] = ['$exists' => false];
        }

        $options = $this->getWriteOptions($options);

        $result = $this->collection->deleteOne($query, $options);

        if (($this->class->isVersioned || $this->class->isLockable) && ! $result->getDeletedCount()) {
            throw LockException::lockFailed($document);
        }
    }

    /**
     * Refreshes a managed document.
     *
     * @param object $document The document to refresh.
     */
    public function refresh($document)
    {
        $query = $this->getQueryForDocument($document);
        $data = $this->collection->findOne($query);
        $data = $this->hydratorFactory->hydrate($document, $data);
        $this->uow->setOriginalDocumentData($document, $data);
    }

    /**
     * Finds a document by a set of criteria.
     *
     * If a scalar or MongoDB\BSON\ObjectId is provided for $criteria, it will
     * be used to match an _id value.
     *
     * @param mixed  $criteria Query criteria
     * @param object $document Document to load the data into. If not specified, a new document is created.
     * @param array  $hints    Hints for document creation
     * @param int    $lockMode
     * @param array  $sort     Sort array for Cursor::sort()
     * @throws LockException
     * @return object|null The loaded and managed document instance or null if no document was found
     * @todo Check identity map? loadById method? Try to guess whether $criteria is the id?
     */
    public function load($criteria, $document = null, array $hints = [], $lockMode = 0, ?array $sort = null)

    {
        // TODO: remove this
        if ($criteria === null || is_scalar($criteria) || $criteria instanceof ObjectId) {
if ($x instanceof DoesNotExist) {
    // Do something.
}
            $criteria = ['_id' => $criteria];
        }

        $criteria = $this->prepareQueryOrNewObj($criteria);
/**
 * @return array|string
 */
function returnsDifferentValues($x) {
    if ($x) {
        return 'foo';
    }

    return array();
}

$x = returnsDifferentValues($y);
if (is_array($x)) {
    // $x is an array.
}
        $criteria = $this->addDiscriminatorToPreparedQuery($criteria);
        $criteria = $this->addFilterToPreparedQuery($criteria);

        $options = [];
        if ($sort !== null) {
            $options['sort'] = $this->prepareSort($sort);
        }
        $result = $this->collection->findOne($criteria, $options);

        if ($this->class->isLockable) {
            $lockMapping = $this->class->fieldMappings[$this->class->lockField];
            if (isset($result[$lockMapping['name']]) && $result[$lockMapping['name']] === LockMode::PESSIMISTIC_WRITE) {
                throw LockException::lockFailed($result);
            }
        }

        return $this->createDocument($result, $document, $hints);
    }

    /**
     * Finds documents by a set of criteria.
     *
     * @param array    $criteria Query criteria
     * @param array    $sort     Sort array for Cursor::sort()
     * @param int|null $limit    Limit for Cursor::limit()
     * @param int|null $skip     Skip for Cursor::skip()
     * @return Iterator
     */
    public function loadAll(array $criteria = [], ?array $sort = null, $limit = null, $skip = null)
    {
        $criteria = $this->prepareQueryOrNewObj($criteria);
        $criteria = $this->addDiscriminatorToPreparedQuery($criteria);
        $criteria = $this->addFilterToPreparedQuery($criteria);

        $options = [];
        if ($sort !== null) {
            $options['sort'] = $this->prepareSort($sort);
        }

        if ($limit !== null) {
            $options['limit'] = $limit;
        }

        if ($skip !== null) {
            $options['skip'] = $skip;
        }

        $baseCursor = $this->collection->find($criteria, $options);
        $cursor = $this->wrapCursor($baseCursor);

        return $cursor;
    }

    /**
     * @param object $document
     *
     * @return array
     * @throws MongoDBException
     */
    private function getShardKeyQuery($document)
    {
        if (! $this->class->isSharded()) {
            return [];
        }

        $shardKey = $this->class->getShardKey();
        $keys = array_keys($shardKey['keys']);
        $data = $this->uow->getDocumentActualData($document);

        $shardKeyQueryPart = [];
        foreach ($keys as $key) {
            $mapping = $this->class->getFieldMappingByDbFieldName($key);
            $this->guardMissingShardKey($document, $key, $data);

            if (isset($mapping['association']) && $mapping['association'] === ClassMetadata::REFERENCE_ONE) {
                $reference = $this->prepareReference(
                    $key,
                    $data[$mapping['fieldName']],
                    $mapping,
                    false
                );
                foreach ($reference as $keyValue) {
                    $shardKeyQueryPart[$keyValue[0]] = $keyValue[1];
                }
            } else {
                $value = Type::getType($mapping['type'])->convertToDatabaseValue($data[$mapping['fieldName']]);
                $shardKeyQueryPart[$key] = $value;
            }
        }

        return $shardKeyQueryPart;
    }

    /**
     * Wraps the supplied base cursor in the corresponding ODM class.
     *
     */
    private function wrapCursor(Cursor $baseCursor): Iterator
    {
        return new CachingIterator(new HydratingIterator($baseCursor, $this->dm->getUnitOfWork(), $this->class));
    }

    /**
     * Checks whether the given managed document exists in the database.
     *
     * @param object $document
     * @return bool TRUE if the document exists in the database, FALSE otherwise.
     */
    public function exists($document)
    {
        $id = $this->class->getIdentifierObject($document);
        return (bool) $this->collection->findOne(['_id' => $id], ['_id']);
    }

    /**
     * Locks document by storing the lock mode on the mapped lock field.
     *
     * @param object $document
     * @param int    $lockMode
     */
    public function lock($document, $lockMode)
    {
        $id = $this->uow->getDocumentIdentifier($document);
        $criteria = ['_id' => $this->class->getDatabaseIdentifierValue($id)];
        $lockMapping = $this->class->fieldMappings[$this->class->lockField];
        $this->collection->updateOne($criteria, ['$set' => [$lockMapping['name'] => $lockMode]]);
        $this->class->reflFields[$this->class->lockField]->setValue($document, $lockMode);
    }

    /**
     * Releases any lock that exists on this document.
     *
     * @param object $document
     */
    public function unlock($document)
    {
        $id = $this->uow->getDocumentIdentifier($document);
        $criteria = ['_id' => $this->class->getDatabaseIdentifierValue($id)];
        $lockMapping = $this->class->fieldMappings[$this->class->lockField];
        $this->collection->updateOne($criteria, ['$unset' => [$lockMapping['name'] => true]]);
        $this->class->reflFields[$this->class->lockField]->setValue($document, null);
    }

    /**
     * Creates or fills a single document object from an query result.
     *
     * @param object $result   The query result.
     * @param object $document The document object to fill, if any.
     * @param array  $hints    Hints for document creation.
     * @return object The filled and managed document object or NULL, if the query result is empty.
     */
    private function createDocument($result, $document = null, array $hints = [])
    {
        if ($result === null) {
            return null;
        }

        if ($document !== null) {
            $hints[Query::HINT_REFRESH] = true;
            $id = $this->class->getPHPIdentifierValue($result['_id']);
            $this->uow->registerManaged($document, $id, $result);
        }

        return $this->uow->getOrCreateDocument($this->class->name, $result, $hints, $document);
    }

    /**
     * Loads a PersistentCollection data. Used in the initialize() method.
     *
     */
    public function loadCollection(PersistentCollectionInterface $collection)
    {
        $mapping = $collection->getMapping();
        switch ($mapping['association']) {
            case ClassMetadata::EMBED_MANY:
                $this->loadEmbedManyCollection($collection);
                break;

            case ClassMetadata::REFERENCE_MANY:
                if (isset($mapping['repositoryMethod']) && $mapping['repositoryMethod']) {
                    $this->loadReferenceManyWithRepositoryMethod($collection);
                } else {
                    if ($mapping['isOwningSide']) {
                        $this->loadReferenceManyCollectionOwningSide($collection);
                    } else {
                        $this->loadReferenceManyCollectionInverseSide($collection);
                    }
                }
                break;
        }
    }

    private function loadEmbedManyCollection(PersistentCollectionInterface $collection)
    {
        $embeddedDocuments = $collection->getMongoData();
        $mapping = $collection->getMapping();
        $owner = $collection->getOwner();
        if (! $embeddedDocuments) {

            return;
        }

        foreach ($embeddedDocuments as $key => $embeddedDocument) {
            $className = $this->uow->getClassNameForAssociation($mapping, $embeddedDocument);
            $embeddedMetadata = $this->dm->getClassMetadata($className);
            $embeddedDocumentObject = $embeddedMetadata->newInstance();

            $this->uow->setParentAssociation($embeddedDocumentObject, $mapping, $owner, $mapping['name'] . '.' . $key);

            $data = $this->hydratorFactory->hydrate($embeddedDocumentObject, $embeddedDocument, $collection->getHints());
            $id = $data[$embeddedMetadata->identifier] ?? null;

            if (empty($collection->getHints()[Query::HINT_READ_ONLY])) {
                $this->uow->registerManaged($embeddedDocumentObject, $id, $data);
            }
            if (CollectionHelper::isHash($mapping['strategy'])) {
                $collection->set($key, $embeddedDocumentObject);
            } else {
                $collection->add($embeddedDocumentObject);
            }
        }
    }

    private function loadReferenceManyCollectionOwningSide(PersistentCollectionInterface $collection)
    {
        $hints = $collection->getHints();
        $mapping = $collection->getMapping();
        $groupedIds = [];

        $sorted = isset($mapping['sort']) && $mapping['sort'];

        foreach ($collection->getMongoData() as $key => $reference) {
            $className = $this->uow->getClassNameForAssociation($mapping, $reference);
            $identifier = ClassMetadata::getReferenceId($reference, $mapping['storeAs']);
            $id = $this->dm->getClassMetadata($className)->getPHPIdentifierValue($identifier);

            // create a reference to the class and id
            $reference = $this->dm->getReference($className, $id);

            // no custom sort so add the references right now in the order they are embedded
            if (! $sorted) {
                if (CollectionHelper::isHash($mapping['strategy'])) {
                    $collection->set($key, $reference);
                } else {
                    $collection->add($reference);
                }
            }

            // only query for the referenced object if it is not already initialized or the collection is sorted
            if (! (($reference instanceof Proxy && ! $reference->__isInitialized__)) && ! $sorted) {
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}
                continue;
            }

            $groupedIds[$className][] = $identifier;
        }
        foreach ($groupedIds as $className => $ids) {
            $class = $this->dm->getClassMetadata($className);
            $mongoCollection = $this->dm->getDocumentCollection($className);
            $criteria = $this->cm->merge(
                ['_id' => ['$in' => array_values($ids)]],
                $this->dm->getFilterCollection()->getFilterCriteria($class),
                $mapping['criteria'] ?? []
            );
            $criteria = $this->uow->getDocumentPersister($className)->prepareQueryOrNewObj($criteria);

            $options = [];
            if (isset($mapping['sort'])) {
                $options['sort'] = $this->prepareSort($mapping['sort']);
            }
            if (isset($mapping['limit'])) {
                $options['limit'] = $mapping['limit'];
            }
            if (isset($mapping['skip'])) {
                $options['skip'] = $mapping['skip'];
            }
            if (! empty($hints[Query::HINT_READ_PREFERENCE])) {
                $options['readPreference'] = $hints[Query::HINT_READ_PREFERENCE];
            }

            $cursor = $mongoCollection->find($criteria, $options);
            $documents = $cursor->toArray();
            foreach ($documents as $documentData) {
                $document = $this->uow->getById($documentData['_id'], $class);
                if ($document instanceof Proxy && ! $document->__isInitialized()) {
                    $data = $this->hydratorFactory->hydrate($document, $documentData);
                    $this->uow->setOriginalDocumentData($document, $data);
                    $document->__isInitialized__ = true;
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}
                }
                if (! $sorted) {
                    continue;
                }

                $collection->add($document);
            }
        }
    }

    private function loadReferenceManyCollectionInverseSide(PersistentCollectionInterface $collection)
    {
        $query = $this->createReferenceManyInverseSideQuery($collection);
        $documents = $query->execute()->toArray();
        foreach ($documents as $key => $document) {
            $collection->add($document);
        }
    }

    /**
     *
     * @return Query
     */
    public function createReferenceManyInverseSideQuery(PersistentCollectionInterface $collection)
    {
        $hints = $collection->getHints();
        $mapping = $collection->getMapping();
        $owner = $collection->getOwner();
        $ownerClass = $this->dm->getClassMetadata(get_class($owner));
        $targetClass = $this->dm->getClassMetadata($mapping['targetDocument']);
        $mappedByMapping = $targetClass->fieldMappings[$mapping['mappedBy']] ?? [];
        $mappedByFieldName = ClassMetadata::getReferenceFieldName($mappedByMapping['storeAs'] ?? ClassMetadata::REFERENCE_STORE_AS_DB_REF, $mapping['mappedBy']);

        $criteria = $this->cm->merge(
            [$mappedByFieldName => $ownerClass->getIdentifierObject($owner)],
            $this->dm->getFilterCollection()->getFilterCriteria($targetClass),
            $mapping['criteria'] ?? []
        );
        $criteria = $this->uow->getDocumentPersister($mapping['targetDocument'])->prepareQueryOrNewObj($criteria);
        $qb = $this->dm->createQueryBuilder($mapping['targetDocument'])
            ->setQueryArray($criteria);

        if (isset($mapping['sort'])) {
            $qb->sort($mapping['sort']);
        }
        if (isset($mapping['limit'])) {
            $qb->limit($mapping['limit']);
        }
        if (isset($mapping['skip'])) {
            $qb->skip($mapping['skip']);
        }

        if (! empty($hints[Query::HINT_READ_PREFERENCE])) {
            $qb->setReadPreference($hints[Query::HINT_READ_PREFERENCE]);
        }

        foreach ($mapping['prime'] as $field) {
            $qb->field($field)->prime(true);
        }

        return $qb->getQuery();
    }

    private function loadReferenceManyWithRepositoryMethod(PersistentCollectionInterface $collection)
    {
        $cursor = $this->createReferenceManyWithRepositoryMethodCursor($collection);
        $mapping = $collection->getMapping();
        $documents = $cursor->toArray();
        foreach ($documents as $key => $obj) {
            if (CollectionHelper::isHash($mapping['strategy'])) {
                $collection->set($key, $obj);
            } else {
                $collection->add($obj);
            }
        }
    }

    /**
     *
     * @return \Iterator
     */
    public function createReferenceManyWithRepositoryMethodCursor(PersistentCollectionInterface $collection)
    {
        $mapping = $collection->getMapping();
        $repositoryMethod = $mapping['repositoryMethod'];
        $cursor = $this->dm->getRepository($mapping['targetDocument'])
            ->$repositoryMethod($collection->getOwner());

        if (! $cursor instanceof Iterator) {
            throw new \BadMethodCallException(sprintf('Expected repository method %s to return an iterable object', $repositoryMethod));
        }

        if (! empty($mapping['prime'])) {
            $referencePrimer = new ReferencePrimer($this->dm, $this->dm->getUnitOfWork());
            $primers = array_combine($mapping['prime'], array_fill(0, count($mapping['prime']), true));
            $class = $this->dm->getClassMetadata($mapping['targetDocument']);

            $cursor = new PrimingIterator($cursor, $class, $referencePrimer, $primers, $collection->getHints());
        }

        return $cursor;
    }

    /**
     * Prepare a projection array by converting keys, which are PHP property
     * names, to MongoDB field names.
     *
     * @param array $fields
     * @return array
     */
    public function prepareProjection(array $fields)
    {
        $preparedFields = [];

        foreach ($fields as $key => $value) {
            $preparedFields[$this->prepareFieldName($key)] = $value;
        }

        return $preparedFields;
    }

    /**
     * @param string $sort
     * @return int
     */
    private function getSortDirection($sort)
    {
        switch (strtolower((string) $sort)) {
            case 'desc':
                return -1;

            case 'asc':
                return 1;
        }

        return $sort;
    }

    /**
     * Prepare a sort specification array by converting keys to MongoDB field
     * names and changing direction strings to int.
     *
     * @param array $fields
     * @return array
     */
    public function prepareSort(array $fields)
    {
        $sortFields = [];

        foreach ($fields as $key => $value) {
            $sortFields[$this->prepareFieldName($key)] = $this->getSortDirection($value);
        }

        return $sortFields;
    }

    /**
     * Prepare a mongodb field name and convert the PHP property names to MongoDB field names.
     *
     * @param string $fieldName
     * @return string
     */
    public function prepareFieldName($fieldName)
    {
        $fieldNames = $this->prepareQueryElement($fieldName, null, null, false);

        return $fieldNames[0][0];
    }

    /**
     * Adds discriminator criteria to an already-prepared query.
     *
     * This method should be used once for query criteria and not be used for
     * nested expressions. It should be called before
     * {@link DocumentPerister::addFilterToPreparedQuery()}.
     *
     * @param array $preparedQuery
     * @return array
     */
    public function addDiscriminatorToPreparedQuery(array $preparedQuery)
    {
        /* If the class has a discriminator field, which is not already in the
         * criteria, inject it now. The field/values need no preparation.
         */
        if ($this->class->hasDiscriminator() && ! isset($preparedQuery[$this->class->discriminatorField])) {
            $discriminatorValues = $this->getClassDiscriminatorValues($this->class);
            if (count($discriminatorValues) === 1) {
                $preparedQuery[$this->class->discriminatorField] = $discriminatorValues[0];
            } else {
                $preparedQuery[$this->class->discriminatorField] = ['$in' => $discriminatorValues];
            }
        }

        return $preparedQuery;
    }

    /**
     * Adds filter criteria to an already-prepared query.
     *
     * This method should be used once for query criteria and not be used for
     * nested expressions. It should be called after
     * {@link DocumentPerister::addDiscriminatorToPreparedQuery()}.
     *
     * @param array $preparedQuery
     * @return array
     */
    public function addFilterToPreparedQuery(array $preparedQuery)
    {
        /* If filter criteria exists for this class, prepare it and merge
         * over the existing query.
         *
         * @todo Consider recursive merging in case the filter criteria and
         * prepared query both contain top-level $and/$or operators.
         */
        $filterCriteria = $this->dm->getFilterCollection()->getFilterCriteria($this->class);
        if ($filterCriteria) {

            $preparedQuery = $this->cm->merge($preparedQuery, $this->prepareQueryOrNewObj($filterCriteria));
        }

        return $preparedQuery;
    }

    /**
     * Prepares the query criteria or new document object.
     *
     * PHP field names and types will be converted to those used by MongoDB.
     *
     * @param array $query
     * @param bool  $isNewObj
     * @return array
     */
    public function prepareQueryOrNewObj(array $query, $isNewObj = false)
    {
        $preparedQuery = [];

        foreach ($query as $key => $value) {
            // Recursively prepare logical query clauses
            if (in_array($key, ['$and', '$or', '$nor']) && is_array($value)) {
                foreach ($value as $k2 => $v2) {
                    $preparedQuery[$key][$k2] = $this->prepareQueryOrNewObj($v2, $isNewObj);
                }
                continue;
            }

            if (isset($key[0]) && $key[0] === '$' && is_array($value)) {
                $preparedQuery[$key] = $this->prepareQueryOrNewObj($value, $isNewObj);
                continue;
            }

            $preparedQueryElements = $this->prepareQueryElement((string) $key, $value, null, true, $isNewObj);
            foreach ($preparedQueryElements as list($preparedKey, $preparedValue)) {
                $preparedQuery[$preparedKey] = is_array($preparedValue)
                    ? array_map('\Doctrine\ODM\MongoDB\Types\Type::convertPHPToDatabaseValue', $preparedValue)
                    : Type::convertPHPToDatabaseValue($preparedValue);
            }
        }

        return $preparedQuery;
    }

    /**
     * Prepares a query value and converts the PHP value to the database value
     * if it is an identifier.
     *
     * It also handles converting $fieldName to the database name if they are different.
     *
     * @param string        $fieldName
     * @param mixed         $value
     * @param ClassMetadata $class        Defaults to $this->class
     * @param bool          $prepareValue Whether or not to prepare the value
     * @param bool          $inNewObj     Whether or not newObj is being prepared
     * @return array An array of tuples containing prepared field names and values
     */
    private function prepareQueryElement($fieldName, $value = null, $class = null, $prepareValue = true, $inNewObj = false)
    {
        $class = $class ?? $this->class;

        // @todo Consider inlining calls to ClassMetadata methods

        // Process all non-identifier fields by translating field names
        if ($class->hasField($fieldName) && ! $class->isIdentifier($fieldName)) {
            $mapping = $class->fieldMappings[$fieldName];
            $fieldName = $mapping['name'];

            if (! $prepareValue) {
                return [[$fieldName, $value]];
            }

            // Prepare mapped, embedded objects
            if (! empty($mapping['embedded']) && is_object($value) &&
                ! $this->dm->getMetadataFactory()->isTransient(get_class($value))) {
                return [[$fieldName, $this->pb->prepareEmbeddedDocumentValue($mapping, $value)]];
            }

            if (! empty($mapping['reference']) && is_object($value) && ! ($value instanceof ObjectId)) {
if ($x instanceof DoesNotExist) {
    // Do something.
}
                try {
                    return $this->prepareReference($fieldName, $value, $mapping, $inNewObj);
                } catch (MappingException $e) {

                    // do nothing in case passed object is not mapped document
                }
            }

            // No further preparation unless we're dealing with a simple reference
            // We can't have expressions in empty() with PHP < 5.5, so store it in a variable
            $arrayValue = (array) $value;
            if (empty($mapping['reference']) || $mapping['storeAs'] !== ClassMetadata::REFERENCE_STORE_AS_ID || empty($arrayValue)) {
                return [[$fieldName, $value]];
            }

            // Additional preparation for one or more simple reference values
            $targetClass = $this->dm->getClassMetadata($mapping['targetDocument']);

            if (! is_array($value)) {
                return [[$fieldName, $targetClass->getDatabaseIdentifierValue($value)]];
            }

            // Objects without operators or with DBRef fields can be converted immediately
            if (! $this->hasQueryOperators($value) || $this->hasDBRefFields($value)) {
                return [[$fieldName, $targetClass->getDatabaseIdentifierValue($value)]];
            }

            return [[$fieldName, $this->prepareQueryExpression($value, $targetClass)]];
        }

        // Process identifier fields
        if (($class->hasField($fieldName) && $class->isIdentifier($fieldName)) || $fieldName === '_id') {
            $fieldName = '_id';

            if (! $prepareValue) {
                return [[$fieldName, $value]];
            }

            if (! is_array($value)) {
                return [[$fieldName, $class->getDatabaseIdentifierValue($value)]];
            }

            // Objects without operators or with DBRef fields can be converted immediately
            if (! $this->hasQueryOperators($value) || $this->hasDBRefFields($value)) {
                return [[$fieldName, $class->getDatabaseIdentifierValue($value)]];
            }

            return [[$fieldName, $this->prepareQueryExpression($value, $class)]];
        }

        // No processing for unmapped, non-identifier, non-dotted field names
        if (strpos($fieldName, '.') === false) {
            return [[$fieldName, $value]];
        }

        /* Process "fieldName.objectProperty" queries (on arrays or objects).
         *
         * We can limit parsing here, since at most three segments are
         * significant: "fieldName.objectProperty" with an optional index or key
         * for collections stored as either BSON arrays or objects.
         */
        $e = explode('.', $fieldName, 4);

        // No further processing for unmapped fields
        if (! isset($class->fieldMappings[$e[0]])) {
            return [[$fieldName, $value]];
        }

        $mapping = $class->fieldMappings[$e[0]];
        $e[0] = $mapping['name'];

        // Hash and raw fields will not be prepared beyond the field name
        if ($mapping['type'] === Type::HASH || $mapping['type'] === Type::RAW) {
            $fieldName = implode('.', $e);

            return [[$fieldName, $value]];
        }

        if ($mapping['type'] === 'many' && CollectionHelper::isHash($mapping['strategy'])
                && isset($e[2])) {
            $objectProperty = $e[2];
            $objectPropertyPrefix = $e[1] . '.';
            $nextObjectProperty = implode('.', array_slice($e, 3));
        } elseif ($e[1] !== '$') {
            $fieldName = $e[0] . '.' . $e[1];
            $objectProperty = $e[1];
            $objectPropertyPrefix = '';
            $nextObjectProperty = implode('.', array_slice($e, 2));
        } elseif (isset($e[2])) {
            $fieldName = $e[0] . '.' . $e[1] . '.' . $e[2];
            $objectProperty = $e[2];
            $objectPropertyPrefix = $e[1] . '.';
            $nextObjectProperty = implode('.', array_slice($e, 3));
        } else {
            $fieldName = $e[0] . '.' . $e[1];

            return [[$fieldName, $value]];
        }

        // No further processing for fields without a targetDocument mapping
        if (! isset($mapping['targetDocument'])) {
            if ($nextObjectProperty) {
                $fieldName .= '.' . $nextObjectProperty;
            }

            return [[$fieldName, $value]];
        }

        $targetClass = $this->dm->getClassMetadata($mapping['targetDocument']);

        // No further processing for unmapped targetDocument fields
        if (! $targetClass->hasField($objectProperty)) {
            if ($nextObjectProperty) {
                $fieldName .= '.' . $nextObjectProperty;
            }

            return [[$fieldName, $value]];
        }

        $targetMapping = $targetClass->getFieldMapping($objectProperty);
        $objectPropertyIsId = $targetClass->isIdentifier($objectProperty);

        // Prepare DBRef identifiers or the mapped field's property path
        $fieldName = ($objectPropertyIsId && ! empty($mapping['reference']) && $mapping['storeAs'] !== ClassMetadata::REFERENCE_STORE_AS_ID)
            ? ClassMetadata::getReferenceFieldName($mapping['storeAs'], $e[0])
            : $e[0] . '.' . $objectPropertyPrefix . $targetMapping['name'];

        // Process targetDocument identifier fields
        if ($objectPropertyIsId) {
            if (! $prepareValue) {
                return [[$fieldName, $value]];
            }

            if (! is_array($value)) {
                return [[$fieldName, $targetClass->getDatabaseIdentifierValue($value)]];
            }

            // Objects without operators or with DBRef fields can be converted immediately
            if (! $this->hasQueryOperators($value) || $this->hasDBRefFields($value)) {
                return [[$fieldName, $targetClass->getDatabaseIdentifierValue($value)]];
            }

            return [[$fieldName, $this->prepareQueryExpression($value, $targetClass)]];
        }

        /* The property path may include a third field segment, excluding the
         * collection item pointer. If present, this next object property must
         * be processed recursively.
         */
        if ($nextObjectProperty) {
            // Respect the targetDocument's class metadata when recursing
            $nextTargetClass = isset($targetMapping['targetDocument'])
                ? $this->dm->getClassMetadata($targetMapping['targetDocument'])
                : null;

            if (empty($targetMapping['reference'])) {
                $fieldNames = $this->prepareQueryElement($nextObjectProperty, $value, $nextTargetClass, $prepareValue);
            } else {
                // No recursive processing for references as most probably somebody is querying DBRef or alike
                if ($nextObjectProperty[0] !== '$' && in_array($targetMapping['storeAs'], [ClassMetadata::REFERENCE_STORE_AS_DB_REF_WITH_DB, ClassMetadata::REFERENCE_STORE_AS_DB_REF])) {
                    $nextObjectProperty = '$' . $nextObjectProperty;
                }
                $fieldNames = [[$nextObjectProperty, $value]];
            }

            return array_map(function ($preparedTuple) use ($fieldName) {
                list($key, $value) = $preparedTuple;

                return [$fieldName . '.' . $key, $value];
            }, $fieldNames);
        }

        return [[$fieldName, $value]];
    }

    /**
     * Prepares a query expression.
     *
     * @param array|object  $expression
     * @param ClassMetadata $class
     * @return array
     */
    private function prepareQueryExpression($expression, $class)
    {
        foreach ($expression as $k => $v) {
            // Ignore query operators whose arguments need no type conversion
            if (in_array($k, ['$exists', '$type', '$mod', '$size'])) {
                continue;
            }

            // Process query operators whose argument arrays need type conversion
            if (in_array($k, ['$in', '$nin', '$all']) && is_array($v)) {
                foreach ($v as $k2 => $v2) {
                    $expression[$k][$k2] = $class->getDatabaseIdentifierValue($v2);
                }
                continue;
            }

            // Recursively process expressions within a $not operator
            if ($k === '$not' && is_array($v)) {
                $expression[$k] = $this->prepareQueryExpression($v, $class);
                continue;
            }

            $expression[$k] = $class->getDatabaseIdentifierValue($v);
        }

        return $expression;
    }

    /**
     * Checks whether the value has DBRef fields.
     *
     * This method doesn't check if the the value is a complete DBRef object,
     * although it should return true for a DBRef. Rather, we're checking that
     * the value has one or more fields for a DBref. In practice, this could be
     * $elemMatch criteria for matching a DBRef.
     *
     * @param mixed $value
     * @return bool
     */
    private function hasDBRefFields($value)
    {
        if (! is_array($value) && ! is_object($value)) {
            return false;
        }

        if (is_object($value)) {
            $value = get_object_vars($value);
        }

        foreach ($value as $key => $_) {
            if ($key === '$ref' || $key === '$id' || $key === '$db') {
                return true;
            }
        }

        return false;
    }

    /**
     * Checks whether the value has query operators.
     *
     * @param mixed $value
     * @return bool
     */
    private function hasQueryOperators($value)
    {
        if (! is_array($value) && ! is_object($value)) {
            return false;
        }

        if (is_object($value)) {
            $value = get_object_vars($value);
        }

        foreach ($value as $key => $_) {
            if (isset($key[0]) && $key[0] === '$') {
                return true;
            }
        }

        return false;
    }

    /**
     * Gets the array of discriminator values for the given ClassMetadata
     *
     * @return array
     */
    private function getClassDiscriminatorValues(ClassMetadata $metadata)
    {
        $discriminatorValues = [$metadata->discriminatorValue];
        foreach ($metadata->subClasses as $className) {
            $key = array_search($className, $metadata->discriminatorMap);
            if (! $key) {
                continue;
            }

            $discriminatorValues[] = $key;
        }

        // If a defaultDiscriminatorValue is set and it is among the discriminators being queries, add NULL to the list
        if ($metadata->defaultDiscriminatorValue && in_array($metadata->defaultDiscriminatorValue, $discriminatorValues)) {
            $discriminatorValues[] = null;
        }

        return $discriminatorValues;
    }

    private function handleCollections($document, $options)
    {
        // Collection deletions (deletions of complete collections)
        foreach ($this->uow->getScheduledCollections($document) as $coll) {
            if (! $this->uow->isCollectionScheduledForDeletion($coll)) {
                continue;
            }

            $this->cp->delete($coll, $options);
        }
        // Collection updates (deleteRows, updateRows, insertRows)
        foreach ($this->uow->getScheduledCollections($document) as $coll) {
            if (! $this->uow->isCollectionScheduledForUpdate($coll)) {
                continue;
            }

            $this->cp->update($coll, $options);
        }
        // Take new snapshots from visited collections
        foreach ($this->uow->getVisitedCollections($document) as $coll) {
            $coll->takeSnapshot();
        }
    }

    /**
     * If the document is new, ignore shard key field value, otherwise throw an exception.
     * Also, shard key field should be present in actual document data.
     *
     * @param object $document
     * @param string $shardKeyField
     * @param array  $actualDocumentData
     *
     * @throws MongoDBException
     */
    private function guardMissingShardKey($document, $shardKeyField, $actualDocumentData)
    {
        $dcs = $this->uow->getDocumentChangeSet($document);
        $isUpdate = $this->uow->isScheduledForUpdate($document);

        $fieldMapping = $this->class->getFieldMappingByDbFieldName($shardKeyField);
        $fieldName = $fieldMapping['fieldName'];

        if ($isUpdate && isset($dcs[$fieldName]) && $dcs[$fieldName][0] !== $dcs[$fieldName][1]) {
            throw MongoDBException::shardKeyFieldCannotBeChanged($shardKeyField, $this->class->getName());

        }

        if (! isset($actualDocumentData[$fieldName])) {
            throw MongoDBException::shardKeyFieldMissing($shardKeyField, $this->class->getName());

        }
    }

    /**
     * Get shard key aware query for single document.
     *
     * @param object $document
     *
     * @return array
     */
    private function getQueryForDocument($document)
    {
        $id = $this->uow->getDocumentIdentifier($document);
        $id = $this->class->getDatabaseIdentifierValue($id);

        $shardKeyQueryPart = $this->getShardKeyQuery($document);
        $query = array_merge(['_id' => $id], $shardKeyQueryPart);

        return $query;
    }

    /**
     * @param array $options
     *
     * @return array
     */
    private function getWriteOptions(array $options = [])
    {
        $defaultOptions = $this->dm->getConfiguration()->getDefaultCommitOptions();
        $documentOptions = [];
        if ($this->class->hasWriteConcern()) {
            $documentOptions['w'] = $this->class->getWriteConcern();
        }

        return array_merge($defaultOptions, $documentOptions, $options);
    }

    /**
     * @param string $fieldName
     * @param mixed  $value
     * @param array  $mapping
     * @param bool   $inNewObj
     * @return array
     */
    private function prepareReference($fieldName, $value, array $mapping, $inNewObj)
    {
        $reference = $this->dm->createReference($value, $mapping);
        if ($inNewObj || $mapping['storeAs'] === ClassMetadata::REFERENCE_STORE_AS_ID) {
            return [[$fieldName, $reference]];
        }

        switch ($mapping['storeAs']) {
            case ClassMetadata::REFERENCE_STORE_AS_REF:
                $keys = ['id' => true];
                break;

            case ClassMetadata::REFERENCE_STORE_AS_DB_REF:
            case ClassMetadata::REFERENCE_STORE_AS_DB_REF_WITH_DB:
                $keys = ['$ref' => true, '$id' => true, '$db' => true];

                if ($mapping['storeAs'] === ClassMetadata::REFERENCE_STORE_AS_DB_REF) {
                    unset($keys['$db']);
                }

                if (isset($mapping['targetDocument'])) {
                    unset($keys['$ref'], $keys['$db']);
                }
                break;

            default:
                throw new \InvalidArgumentException(sprintf('Reference type %s is invalid.', $mapping['storeAs']));
        }

        if ($mapping['type'] === 'many') {
            return [[$fieldName, ['$elemMatch' => array_intersect_key($reference, $keys)]]];
        }

        return array_map(
            function ($key) use ($reference, $fieldName) {
                return [$fieldName . '.' . $key, $reference[$key]];
            },
            array_keys($keys)
        );
    }
}

Push — master ( f0fe3a...13ea99 )

DocumentPersister::delete() B

Complexity

Size

Duplication

Code Coverage

Importance

1. Missing dependencies

2. Missing use statement

1. Missing dependencies

2. Missing use statement

Available Fixes

Available Fixes

1. Missing dependencies

2. Missing use statement

doctrine / mongodb-odm

Push — master ( f0fe3a...13ea99 )

DocumentPersister::delete() B

Complexity

Size

Duplication

Code Coverage

Importance

1. Missing dependencies

2. Missing use statement

1. Missing dependencies

2. Missing use statement

Available Fixes

Available Fixes

1. Missing dependencies

2. Missing use statement

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