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Weaviate attributes and error handling (#2800)

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Kah Keng Tay 2023-04-12 17:04:42 -07:00 committed by GitHub
parent 0e763677e4
commit 1c7fb31bba
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2 changed files with 10 additions and 1 deletions
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7
langchain/retrievers/weaviate_hybrid_search.py
View File

@ -1,7 +1,7 @@
"""Wrapper around weaviate vector database."""
from __future__ import annotations
from typing import Any, Dict, List
from typing import Any, Dict, List, Optional
from uuid import uuid4
from pydantic import Extra
@ -18,6 +18,7 @@ class WeaviateHybridSearchRetriever(BaseRetriever):
text_key: str,
alpha: float = 0.5,
k: int = 4,
attributes: Optional[List[str]] = None,
):
try:
import weaviate
@ -36,6 +37,8 @@ class WeaviateHybridSearchRetriever(BaseRetriever):
self._index_name = index_name
self._text_key = text_key
self._query_attrs = [self._text_key]
if attributes is not None:
self._query_attrs.extend(attributes)
class Config:
"""Configuration for this pydantic object."""
@ -67,6 +70,8 @@ class WeaviateHybridSearchRetriever(BaseRetriever):
result = (
query_obj.with_hybrid(content, alpha=self.alpha).with_limit(self.k).do()
)
if "errors" in result:
raise ValueError(f"Error during query: {result['errors']}")
docs = []

4
langchain/vectorstores/weaviate.py
View File

@ -83,6 +83,8 @@ class Weaviate(VectorStore):
content["certainty"] = kwargs.get("search_distance")
query_obj = self._client.query.get(self._index_name, self._query_attrs)
result = query_obj.with_near_text(content).with_limit(k).do()
if "errors" in result:
raise ValueError(f"Error during query: {result['errors']}")
docs = []
for res in result["data"]["Get"][self._index_name]:
text = res.pop(self._text_key)
@ -96,6 +98,8 @@ class Weaviate(VectorStore):
vector = {"vector": embedding}
query_obj = self._client.query.get(self._index_name, self._query_attrs)
result = query_obj.with_near_vector(vector).with_limit(k).do()
if "errors" in result:
raise ValueError(f"Error during query: {result['errors']}")
docs = []
for res in result["data"]["Get"][self._index_name]:
text = res.pop(self._text_key)