Doctrine\ODM\MongoDB\Persisters\CollectionPersister::insertRows PHP Method

    private function insertRows(PersistentCollection $coll, array $options)
    {
        $mapping = $coll->getMapping();
        list($propertyPath, $parent) = $this->getPathAndParent($coll);
        if ($mapping['strategy'] === 'set') {
            $setData = array();
            foreach ($coll as $document) {
                if (isset($mapping['reference'])) {
                    $setData[] = $this->pb->prepareReferencedDocValue($mapping, $document);
                } else {
                    $setData[] = $this->pb->prepareEmbeddedDocValue($mapping, $document);
                }
            }
            $query = array($this->cmd.'set' => array($propertyPath => $setData));
            $this->executeQuery($parent, $query, $options);
        } else {
            $strategy = isset($mapping['strategy']) ? $mapping['strategy'] : 'pushAll';
            $insertDiff = $coll->getInsertDiff();
            if ($insertDiff) {
                $query = array($this->cmd.$strategy => array());
                foreach ($insertDiff as $key => $document) {
                    if (isset($mapping['reference'])) {
                        $query[$this->cmd.$strategy][$propertyPath][] = $this->pb->prepareReferencedDocValue($mapping, $document);
                    } else {
                        $query[$this->cmd.$strategy][$propertyPath][] = $this->pb->prepareEmbeddedDocValue($mapping, $document);
                    }
                }
                $this->executeQuery($parent, $query, $options);
            }
        }
    }