langchain_community.chat_message_histories.sql.BaseMessageConverter¶

class langchain_community.chat_message_histories.sql.BaseMessageConverter[source]¶

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[source]¶

Convert a SQLAlchemy model to a BaseMessage instance.

Parameters

sql_message (Any) –

Return type

BaseMessage

abstract get_sql_model_class() → Any[source]¶

Get the SQLAlchemy model class.

Return type

Any

abstract to_sql_model(message: BaseMessage, session_id: str) → Any[source]¶

Convert a BaseMessage instance to a SQLAlchemy model.

Parameters

  • message (BaseMessage) –

  • session_id (str) –

Return type

Any

Examples using BaseMessageConverter¶