Module loader (0.6.1)

API documentation for loader module.

Classes

PostgresDocumentSaver

PostgresDocumentSaver(
    key,
    engine: langchain_google_cloud_sql_pg.engine.PostgresEngine,
    table_name: str,
    content_column: str,
    metadata_columns: typing.List[str] = [],
    metadata_json_column: typing.Optional[str] = None,
)

A class for saving langchain documents into a PostgreSQL database table.

PostgresLoader

PostgresLoader(
    key,
    engine: langchain_google_cloud_sql_pg.engine.PostgresEngine,
    query: str,
    content_columns: typing.List[str],
    metadata_columns: typing.List[str],
    formatter: typing.Callable,
    metadata_json_column: typing.Optional[str] = None,
)

Load documents from PostgreSQL`.

Each document represents one row of the result. The content_columns are written into the content_columnsof the document. The metadata_columns are written into the metadata_columns of the document. By default, first columns is written into the page_content and everything else into the metadata.