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added a method to update session id in PostgresChatMessageHistory #144

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added a method to update session id in PostgresChatMessageHistory #144

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10 changes: 10 additions & 0 deletions langchain_postgres/chat_message_histories.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@

This client provides support for both sync and async via psycopg 3.
"""

from __future__ import annotations

import json
Expand Down Expand Up @@ -370,3 +371,12 @@ async def aclear(self) -> None:
async with self._aconnection.cursor() as cursor:
await cursor.execute(query, {"session_id": self._session_id})
await self._aconnection.commit()

def update_session_id(self, new_session_id: str) -> None:
"""Update the session ID for the current instance and in the database"""
update_query = (
f"UPDATE {self._table_name} SET session_id = %s WHERE session_id = %s;"
)
with self._connection.cursor() as cursor:
cursor.execute(update_query, (new_session_id, self._session_id))
self._connection.commit()