Package Classes (0.14.0)

Chat message history stored in an AlloyDB for PostgreSQL database.

A class for managing connections to a AlloyDB database.

IVFIndex(name: Optional[str] = None, index_type: str = 'ivf', distance_strategy: langchain_postgres.v2.indexes.DistanceStrategy =

IVFQueryOptions(probes: int = 1)

ScaNNIndex(name: Optional[str] = None, index_type: str = 'ScaNN', distance_strategy: langchain_postgres.v2.indexes.DistanceStrategy =

ScaNNQueryOptions(num_leaves_to_search: int = 1, pre_reordering_num_neighbors: int = -1)

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

Load documents from AlloyDB`.

Each document represents one row of the result. The content_columns are written into the content_columns of 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.

Google AlloyDB Vector Store class

API documentation for chat_message_history module.

API documentation for engine module.

API documentation for indexes module.

API documentation for loader module.

API documentation for vectorstore module.