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import lancedb
import os
import gradio as gr
from sentence_transformers import SentenceTransformer
db = lancedb.connect(".lancedb")
#TABLE = db.open_table(os.getenv("TABLE_NAME"))
VECTOR_COLUMN = os.getenv("VECTOR_COLUMN", "vector")
TEXT_COLUMN = os.getenv("TEXT_COLUMN", "text")
BATCH_SIZE = int(os.getenv("BATCH_SIZE", 32))
retriever = SentenceTransformer(os.getenv("EMB_MODEL"))
def retrieve(query, k, table_name, embedding_model_name):
#print(table_name)
#print(emb_name)
TABLE = db.open_table(table_name)
retriever = SentenceTransformer(embedding_model_name)
query_vec = retriever.encode(query)
try:
documents = TABLE.search(query_vec, vector_column_name=VECTOR_COLUMN).limit(k).to_list()
documents = [doc[TEXT_COLUMN] for doc in documents]
return documents
except Exception as e:
raise gr.Error(str(e))
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