langchain.vectorstores.hologres.HologresWrapper

class langchain.vectorstores.hologres.HologresWrapper(connection_string: str, ndims: int, table_name: str)

Hologres API wrapper.

Initialize the wrapper.

Parameters

• connection_string – Hologres connection string.

• ndims – Number of dimensions of the embedding output.

• table_name – Name of the table to store embeddings and data.

Methods

__init__(connection_string, ndims, table_name)	Initialize the wrapper.
create_table([drop_if_exist])
create_vector_extension()
get_by_id(id)
insert(embedding, metadata, document[, id])
query_nearest_neighbours(embedding, k[, filter])

__init__(connection_string: str, ndims: int, table_name: str) → None

Initialize the wrapper.

Parameters

• connection_string – Hologres connection string.

• ndims – Number of dimensions of the embedding output.

• table_name – Name of the table to store embeddings and data.

create_table(drop_if_exist: bool = True) → None

create_vector_extension() → None

get_by_id(id: str) → List[Tuple]

insert(embedding: List[float], metadata: dict, document: str, id: Optional[str] = None) → None

query_nearest_neighbours(embedding: List[float], k: int, filter: Optional[Dict[str, str]] = None) → List[Tuple[str, str, float]]