doctrine / mongodb-odm

                    $updateData['$unset'][$mapping['name']] = true;

                // Update existing embedded document

                } else {

                    $update = $this->prepareUpdateData($new);

                    foreach ($update as $cmd => $values) {

                        foreach ($values as $key => $value) {

                            $updateData[$cmd][$mapping['name'] . '.' . $key] = $value;

                        }

                    }

                }

            // @ReferenceMany, @EmbedMany

            } elseif (isset($mapping['association']) && $mapping['type'] === 'many' && $new) {

                // If we have a new embedded document then lets set the whole thing

                if ($new && $this->uow->isScheduledForInsert($new)) {

                    $updateData['$set'][$mapping['name']] = $this->prepareEmbeddedDocumentValue($mapping, $new);

                } elseif ($new) {

                    // Update existing embedded document

                    $update = $this->prepareUpsertData($new);

                    foreach ($update as $cmd => $values) {

                        foreach ($values as $key => $value) {

                            $updateData[$cmd][$mapping['name'] . '.' . $key] = $value;

                        }

                    }

                }

            // @ReferenceOne

            } elseif (isset($mapping['association']) && $mapping['association'] === ClassMetadata::REFERENCE_ONE) {