This release is a pre-release and may not be stable for production use.
langchain-houyidb
HouyiDB 的 LangChain VectorStore adapter。
from langchain_houyidb import HouyiVectorStore
store = HouyiVectorStore.from_texts(
["apple is a fruit", "laptop is electronics"],
embedding=MyEmbeddings(),
collection_name="docs",
base_url="http://127.0.0.1:7000",
)
docs = store.similarity_search("fruit", k=2)
docs = store.similarity_search(
"device", k=2,
filter={"category": "electronics", "price": {"$lt": 1000}},
)
store.delete(ids=["<add_texts 返回的 id>"])
语义映射
| LangChain | HouyiDB |
|---|---|
Document.page_content |
payload[text_key]（默认 "text"） |
Document.metadata |
payload 其余键 |
| str id | u64（houyidb.stable_id 确定性哈希） |
{"col": v} / {"col": {"$gt": v}} |
filters（eq/gt/gte/lt/lte/in，多键取交集） |
| score | 余弦相似度（越大越相似） |
embedding 由用户侧 Embeddings 计算，HouyiDB 只存取向量。
已知限制
- filter 操作符仅支持
$eq/$gt/$gte/$lt/$lte/$in（其余ValueError）。 - metadata 不得含保留键
label。 - collection 的 payload 存储 v1 易失（进程重启后 metadata 丢失，向量索引不受影响）。
1 maintainer
Metadata
1 maintainer
Release files for langchain-houyidb 0.2.0b5
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Total release size: 11.4 kB
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