implement rpc.update_collection_from_xlsx_row

    """

    Compound method to update collection and collection metadatas from a xlsx file row.

    """

    collection_instance = Collection.objects.filter(

        pk=collection_data.get("collection_pk"), deleted_at__isnull=True

    ).first()

    if not collection_instance:

        raise ServiceException(NO_SUCH_COLLECTION)

    _check_project_permission(user, collection_instance.project, PERM_COLLECTION_UPDATE)

    new_title = collection_data.get("title", "").strip()

    if new_title:

        collection_instance.title = new_title

    for k in collection_data.keys():

        if ":" in k:  # example: Dublin Core: creator

            meta_set_name, meta_name = [x.strip() for x in k.split(":")]

            metadata_instance = Metadata.objects.filter(

                title=meta_name, set__title=meta_set_name

            ).first()

            if metadata_instance:

                MetadataCollectionValue.objects.filter(

                    metadata=metadata_instance, collection=collection_instance

                ).delete()

                if collection_data.get(k) is not None:

                    for value in [

                        x.strip()

                        for x in str(collection_data.get(k, "")).split(

                            XLSX_MULTIPLE_VALUES_SEPARATOR

                        )

                    ]:

                        meta_collection_value = MetadataCollectionValue()

                        meta_collection_value.collection = collection_instance

                        meta_collection_value.metadata = metadata_instance

                        meta_collection_value.value = value.strip()

                        meta_collection_value.save()

    collection_instance.save()  # force update of collection

    return True