From 7148f3e1fe5b986d5c16bdc6efc6a99b47ba9c0f Mon Sep 17 00:00:00 2001
From: Duda Nogueira <dudanogueira@gmail.com>
Date: Wed, 1 Nov 2023 12:22:15 -0300
Subject: [PATCH] Weaviate - Fix schema existence check (#12711)

This will allow you create the schema beforehand. The check was failing
and preventing importing into existing classes.

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---
 libs/langchain/langchain/vectorstores/weaviate.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libs/langchain/langchain/vectorstores/weaviate.py b/libs/langchain/langchain/vectorstores/weaviate.py
index 83973bb1d94..85b060a54d6 100644
--- a/libs/langchain/langchain/vectorstores/weaviate.py
+++ b/libs/langchain/langchain/vectorstores/weaviate.py
@@ -461,7 +461,7 @@ class Weaviate(VectorStore):
         index_name = index_name or f"LangChain_{uuid4().hex}"
         schema = _default_schema(index_name)
         # check whether the index already exists
-        if not client.schema.contains(schema):
+        if not client.schema.exists(index_name):
             client.schema.create_class(schema)
 
         embeddings = embedding.embed_documents(texts) if embedding else None