Update Weaviate Langchain retriever to V4

bobby_r · April 24, 2024, 11:55pm

Could we please update the Weaviate Langchain retriever client to the new V4 version.

And also if we can add the following functionality:
-Multi tenancy (this was only added to the Langchain Weaviate Vector store package)
-auto_cut: This is one of the best features of Weaviate, much better than a hard top_k cut off.

Code:

github.com

langchain-ai/langchain/blob/master/libs/community/langchain_community/retrievers/weaviate_hybrid_search.py

from __future__ import annotations

from typing import Any, Dict, List, Optional, cast
from uuid import uuid4

from langchain_core.callbacks import CallbackManagerForRetrieverRun
from langchain_core.documents import Document
from langchain_core.pydantic_v1 import root_validator
from langchain_core.retrievers import BaseRetriever


class WeaviateHybridSearchRetriever(BaseRetriever):
    """`Weaviate hybrid search` retriever.

    See the documentation:
      https://weaviate.io/blog/hybrid-search-explained
    """

    client: Any
    """keyword arguments to pass to the Weaviate client."""

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Langchain docs:

DudaNogueira · April 25, 2024, 12:40pm

hi @bobby_r !! Welcome to our community!

This was recently done already:

I even updated this recipe to use the new integration:

Let me know if this helps.

Thanks!

DudaNogueira · April 25, 2024, 12:42pm

Also, check here for the documentation:

Topic		Replies	Views
WeaviateHybridSearchRetriever Support bug	4	112	April 17, 2024
Weaviate-python-client or langhchain for using weaviate db Support integration	4	586	September 6, 2023
Support for Weaviate JS SDK v3 in @langchain/weaviate package Support developer-experience , javascript	1	17	May 15, 2024
Need help combining weaviate with langchain Support	8	2042	April 5, 2024
Python `v4` client - feedback megathread! Support developer-experience , python	36	2844	February 16, 2024

Update Weaviate Langchain retriever to V4

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