checkpointpostgres==1.0.5

langgraph-checkpoint-postgres 1.0.5

Summary of Changes

• Enhanced checkpoint loading process with improved handling of pending sends and channel values
• Modified SQL query to maintain consistent ordering of results with explicit order by clauses
• Simplified checkpoint serialization/deserialization logic by removing unnecessary base64 encoding/decoding
• Fixed documentation to correctly indicate return type of from_conn_string method in async implementation

Detailed Changes

langgraph.checkpoint.postgres.PostgresSaver

• Modified checkpoint loading in list and get_tuple methods to use a revised _load_checkpoint implementation that better handles pending sends and channel values

langgraph.checkpoint.postgres.aio.AsyncPostgresSaver

• Updated checkpoint loading in alist and aget_tuple methods to use the improved checkpoint loading mechanism
• Fixed documentation in from_conn_string to correctly indicate AsyncPostgresSaver as the return type

langgraph.checkpoint.postgres.base.BasePostgresSaver

• Redesigned _load_checkpoint method to accept explicit parameters for channel_values and pending_sends, improving data handling
• Simplified _dump_checkpoint method by removing unnecessary encoding of pending sends
• Enhanced the SQL query with more explicit ordering (order by cw.task_id, cw.idx) for consistent results
• Added a specific query to retrieve pending_sends data from parent checkpoints
• Removed unnecessary base64 encoding/decoding operations, reducing processing overhead