public function loadCollection(PersistentCollection $collection) { $mapping = $collection->getMapping(); $cmd = $this->dm->getConfiguration()->getMongoCmd(); $groupedIds = array(); foreach ($collection->getReferences() as $reference) { $className = $this->dm->getClassNameFromDiscriminatorValue($mapping, $reference); $id = $reference[$cmd . 'id']; $reference = $this->dm->getReference($className, (string) $id); $collection->add($reference); if ($reference instanceof Proxy && ! $reference->__isInitialized__) { if ( ! isset($groupedIds[$className])) { $groupedIds[$className] = array(); } $groupedIds[$className][] = $id; } } foreach ($groupedIds as $className => $ids) { $mongoCollection = $this->dm->getDocumentCollection($className); $data = $mongoCollection->find(array('_id' => array($cmd . 'in' => $ids))); $hints = array(Builder::HINT_REFRESH => true); foreach ($data as $id => $documentData) { $document = $this->uow->getOrCreateDocument($className, $documentData, $hints); } } }