langchain_community.chat_message_histories.sql.BaseMessageConverter

class langchain_community.chat_message_histories.sql.BaseMessageConverter

Class that converts BaseMessage to the SQLAlchemy model.

Methods

__init__()
from_sql_model(sql_message)	Convert a SQLAlchemy model to a BaseMessage instance.
get_sql_model_class()	Get the SQLAlchemy model class.
to_sql_model(message, session_id)	Convert a BaseMessage instance to a SQLAlchemy model.

__init__()

abstract from_sql_model(sql_message: Any) → BaseMessage

Convert a SQLAlchemy model to a BaseMessage instance.

Parameters

sql_message (Any) –

Return type

BaseMessage

abstract get_sql_model_class() → Any

Get the SQLAlchemy model class.

Return type

Any

abstract to_sql_model(message: BaseMessage, session_id: str) → Any

Convert a BaseMessage instance to a SQLAlchemy model.

Parameters

• message (BaseMessage) –

• session_id (str) –

Return type

Any

Examples using BaseMessageConverter

• SQL Chat Message History