Update app.py

app.py

@@ -69,11 +69,35 @@ Article = {
 #  "vectorizer": "text2vec-contextionary"
 }
 
-
+# Function to check if a class exists in the schema
+def class_exists(class_name):
+    try:
+        return client.schema.contains_class(class_name)
+    except Exception as e:
+        print(f"Error checking if class exists: {e}")
+        return False
+
+# Initialize the schema
 schema = {
     "classes": [Article]
 }
 
+# Check if 'Article' class already exists
+if not class_exists("Article"):
+    # Create the schema if 'Article' class does not exist
+    try:
+        client.schema.create(schema)
+    except Exception as e:
+        print(f"Error creating schema: {e}")
+else:
+    # Retrieve the existing schema if 'Article' class exists
+    try:
+        existing_schema = client.schema.get()
+        print("Existing schema retrieved:", existing_schema)
+    except Exception as e:
+        print(f"Error retrieving existing schema: {e}")
+        
+
 # Initialize vectorstore
 vectorstore = Weaviate(client, index_name="HereChat", text_key="text")
 client.schema.create(schema)