Module loader (0.8.2)

Column(name: str, data_type: str, nullable: bool = True)

SpannerDocumentSaver(
 instance_id: str,
 database_id: str,
 table_name: str,
 content_column: str = "page_content",
 metadata_columns: typing.List[str] = [],
 metadata_json_column: str = "langchain_metadata",
 primary_key: typing.Optional[str] = None,
 client: typing.Optional[google.cloud.spanner_v1.client.Client] = None,
)

SpannerLoader(
 instance_id: str,
 database_id: str,
 query: str,
 content_columns: typing.List[str] = [],
 metadata_columns: typing.List[str] = [],
 format: str = "text",
 databoost: bool = False,
 metadata_json_column: str = "langchain_metadata",
 staleness: typing.Union[float, datetime.datetime] = 0.0,
 client: typing.Optional[google.cloud.spanner_v1.client.Client] = None,
)

_load_doc_to_row(
 table_fields: typing.List[str],
 doc: langchain_core.documents.base.Document,
 content_column: str,
 metadata_json_column: str,
 parse_json: bool = True,
) -> tuple